Portable UDFs: Write Once, Run Anywhere
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While most query engines come with a rich set of functions, it does not cover all the needs of users. In such cases, user defined functions (UDFs) allow users to express their business logic and use it in their queries. It is common for users to use more than one compute engine for solving their data problems. At Facebook, we provide multiple systems for users to solve their data problems : adhoc, batch, streaming / real-time. Users end up picking a system based off of their needs and problems at hand. Every system typically has its own way of allowing users to create UDFs. If a UDF was defined in one system, sooner or later there would be a need to have similar UDF in the other ones as well. This leads to users having to re-write the same UDFs multiple times to target for each system they want to use it in. In this talk, we’ll take a deep dive in the Portable UDF. Portable UDF is our way of allowing users to write a function once in an engine agnostic way and use it across several compute engines. We’ll present the motivation, design and current state of Portable UDF project.
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Apache Spark plays an important role in Stitch Fix’s data platform, and the company’s data scientists use Spark for their ETL and Presto for their ad hoc queries. The goal for the team running the compute infrastructure is to understand and make the data scientists’ lives easier, particularly in terms of usability of Spark, by building tools that make it easier to get started with Spark and transition themselves to a daily workflow. The compute infrastructure is a part of the data platform that is responsible for all the needs of data scientists as Stitch Fix.
In this talk, we look at Stitch Fix’s journey, exploring its Spark setup, in-house tools and how they work in synergy with open source frameworks in a cloud environment. There are additional improvements to the infrastructure that help persist information for future use and optimization and we look at how the implementation of Amazon’s EMR FS has helped make it easier for us to read from the S3 source.
Giraph+Gora in ApacheCon14
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Headaches and Breakthroughs in Building Continuous Applications
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Creating Reusable Geospatial Pipelines
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Using Search API, Search API Solr and Facets in Drupal 8
Using Search API, Search API Solr and Facets in Drupal 8Websolutions Agency This document provides an overview of the Search API and Search API Solr modules in Drupal 8. It discusses installing and configuring the modules, creating search indexes and integrating them with views. It also covers setting up faceted search displays and developing custom search processors. The Search API allows indexing content from any entity and supports various backends including the database and Apache Solr. Facets provide filters for narrowing search results. Custom processors can alter queries and results.
Puppet & Perforce: Versioning Everything for Deployments
Puppet & Perforce: Versioning Everything for DeploymentsPerforce We all want faster deployments – but how? Learn how to use Perforce to manage everything that goes into deployments, how to use Puppet to manage the state of nodes with Perforce, and how integrating Perforce and Puppet speeds up the adoption of DevOps practices.
Productionizing Spark and the REST Job Server- Evan Chan
Productionizing Spark and the REST Job Server- Evan ChanSpark Summit The document discusses productionizing Apache Spark and using the Spark REST Job Server. It provides an overview of Spark deployment options like YARN, Mesos, and Spark Standalone mode. It also covers Spark configuration topics like jars management, classpath configuration, and tuning garbage collection. The document then discusses running Spark applications in a cluster using tools like spark-submit and the Spark Job Server. It highlights features of the Spark Job Server like enabling low-latency Spark queries and sharing cached RDDs across jobs. Finally, it provides examples of using the Spark Job Server in production environments.
Spark + AI Summit 2019: Headaches and Breakthroughs in Building Continuous Ap...
Spark + AI Summit 2019: Headaches and Breakthroughs in Building Continuous Ap...Landon Robinson At SpotX, we have built and maintained a portfolio of Spark Streaming applications -- all of which process records in the millions per minute. From pure data ingestion, to ETL, to real-time reporting, to live customer-facing products and features, continuous applications are in our DNA. Come along with us as we outline our journey from square one to present in the world of Spark Streaming. We'll detail what we've learned about efficient processing and monitoring, reliability and stability, and long term support of a streaming app. Come learn from our mistakes, and leave with some handy settings and designs you can implement in your own streaming apps.
Presented by Landon Robinson and Jack Chapa
Incorta spark integration
Incorta spark integrationDylan Wan Incorta allows users to create materialized views (MVs) using Spark. It provides functions to read data from Incorta tables and save Spark DataFrames as MVs. The document discusses Spark integration with Incorta, including installing and configuring Spark, and creating the first MV using Spark Python APIs. It demonstrates reading data from Incorta and saving a DataFrame as a new MV.
Spark in the Maritime Domain
Spark in the Maritime DomainDemi Ben-Ari We will be showing the use case of the implementation of a Data Pipeline in the maritime domain @Windward via Spark applications.
The process was converting a Monolith application to a fully distributed and scalable application.
We'll be talking about all the tools and the process of taking an idea and developing Spark applications around it, And will show the development of an application End to End, from DevOps to the method of thinking about the development of applications, showing use-cases and the "lessons learned" at Windward Ltd, I hope that after the talk, it will give you some more Practical tools to "Spark"ing your way around.
Big Data Beyond the JVM - Strata San Jose 2018
Big Data Beyond the JVM - Strata San Jose 2018Holden Karau The document discusses accelerating big data processing beyond just the Java Virtual Machine (JVM). It introduces Rachel Warren and Holden Karau, the presenters. It then covers the current state of PySpark and its performance limitations due to serialization between Python and the JVM. Future improvements discussed include using Apache Arrow to accelerate UDFs, Dask for pure Python processing, and Apache Beam for additional languages. The presenters promote their new book on high performance Spark and take questions at the end.
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Data Lakehouse Symposium | Day 1 | Part 1
Data Lakehouse Symposium | Day 1 | Part 1Databricks The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse.
Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today.
Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow.
This is an educational event.
Several of the authors of the book Building the Data Lakehouse will be presenting at this symposium.
Data Lakehouse Symposium | Day 1 | Part 2
Data Lakehouse Symposium | Day 1 | Part 2Databricks The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse.
Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today.
Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow.
This is an educational event.
Several of the authors of the book Building the Data Lakehouse will be presenting at this symposium.
Data Lakehouse Symposium | Day 2
Data Lakehouse Symposium | Day 2Databricks The world of data architecture began with applications. Next came data warehouses. Then text was organized into a data warehouse.
Then one day the world discovered a whole new kind of data that was being generated by organizations. The world found that machines generated data that could be transformed into valuable insights. This was the origin of what is today called the data lakehouse. The evolution of data architecture continues today.
Come listen to industry experts describe this transformation of ordinary data into a data architecture that is invaluable to business. Simply put, organizations that take data architecture seriously are going to be at the forefront of business tomorrow.
This is an educational event.
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Data Lakehouse Symposium | Day 4
Data Lakehouse Symposium | Day 4Databricks The document discusses the challenges of modern data, analytics, and AI workloads. Most enterprises struggle with siloed data systems that make integration and productivity difficult. The future of data lies with a data lakehouse platform that can unify data engineering, analytics, data warehousing, and machine learning workloads on a single open platform. The Databricks Lakehouse platform aims to address these challenges with its open data lake approach and capabilities for data engineering, SQL analytics, governance, and machine learning.
5 Critical Steps to Clean Your Data Swamp When Migrating Off of Hadoop
5 Critical Steps to Clean Your Data Swamp When Migrating Off of HadoopDatabricks In this session, learn how to quickly supplement your on-premises Hadoop environment with a simple, open, and collaborative cloud architecture that enables you to generate greater value with scaled application of analytics and AI on all your data. You will also learn five critical steps for a successful migration to the Databricks Lakehouse Platform along with the resources available to help you begin to re-skill your data teams.
Democratizing Data Quality Through a Centralized Platform
Democratizing Data Quality Through a Centralized PlatformDatabricks Bad data leads to bad decisions and broken customer experiences. Organizations depend on complete and accurate data to power their business, maintain efficiency, and uphold customer trust. With thousands of datasets and pipelines running, how do we ensure that all data meets quality standards, and that expectations are clear between producers and consumers? Investing in shared, flexible components and practices for monitoring data health is crucial for a complex data organization to rapidly and effectively scale.
At Zillow, we built a centralized platform to meet our data quality needs across stakeholders. The platform is accessible to engineers, scientists, and analysts, and seamlessly integrates with existing data pipelines and data discovery tools. In this presentation, we will provide an overview of our platform’s capabilities, including:
Giving producers and consumers the ability to define and view data quality expectations using a self-service onboarding portal
Performing data quality validations using libraries built to work with spark
Dynamically generating pipelines that can be abstracted away from users
Flagging data that doesn’t meet quality standards at the earliest stage and giving producers the opportunity to resolve issues before use by downstream consumers
Exposing data quality metrics alongside each dataset to provide producers and consumers with a comprehensive picture of health over time
Learn to Use Databricks for Data Science
Learn to Use Databricks for Data ScienceDatabricks Data scientists face numerous challenges throughout the data science workflow that hinder productivity. As organizations continue to become more data-driven, a collaborative environment is more critical than ever — one that provides easier access and visibility into the data, reports and dashboards built against the data, reproducibility, and insights uncovered within the data.. Join us to hear how Databricks’ open and collaborative platform simplifies data science by enabling you to run all types of analytics workloads, from data preparation to exploratory analysis and predictive analytics, at scale — all on one unified platform.
Why APM Is Not the Same As ML Monitoring
Why APM Is Not the Same As ML MonitoringDatabricks Application performance monitoring (APM) has become the cornerstone of software engineering allowing engineering teams to quickly identify and remedy production issues. However, as the world moves to intelligent software applications that are built using machine learning, traditional APM quickly becomes insufficient to identify and remedy production issues encountered in these modern software applications.
As a lead software engineer at NewRelic, my team built high-performance monitoring systems including Insights, Mobile, and SixthSense. As I transitioned to building ML Monitoring software, I found the architectural principles and design choices underlying APM to not be a good fit for this brand new world. In fact, blindly following APM designs led us down paths that would have been better left unexplored.
In this talk, I draw upon my (and my team’s) experience building an ML Monitoring system from the ground up and deploying it on customer workloads running large-scale ML training with Spark as well as real-time inference systems. I will highlight how the key principles and architectural choices of APM don’t apply to ML monitoring. You’ll learn why, understand what ML Monitoring can successfully borrow from APM, and hear what is required to build a scalable, robust ML Monitoring architecture.
The Function, the Context, and the Data—Enabling ML Ops at Stitch Fix
The Function, the Context, and the Data—Enabling ML Ops at Stitch FixDatabricks Autonomy and ownership are core to working at Stitch Fix, particularly on the Algorithms team. We enable data scientists to deploy and operate their models independently, with minimal need for handoffs or gatekeeping. By writing a simple function and calling out to an intuitive API, data scientists can harness a suite of platform-provided tooling meant to make ML operations easy. In this talk, we will dive into the abstractions the Data Platform team has built to enable this. We will go over the interface data scientists use to specify a model and what that hooks into, including online deployment, batch execution on Spark, and metrics tracking and visualization.
Stage Level Scheduling Improving Big Data and AI Integration
Stage Level Scheduling Improving Big Data and AI IntegrationDatabricks In this talk, I will dive into the stage level scheduling feature added to Apache Spark 3.1. Stage level scheduling extends upon Project Hydrogen by improving big data ETL and AI integration and also enables multiple other use cases. It is beneficial any time the user wants to change container resources between stages in a single Apache Spark application, whether those resources are CPU, Memory or GPUs. One of the most popular use cases is enabling end-to-end scalable Deep Learning and AI to efficiently use GPU resources. In this type of use case, users read from a distributed file system, do data manipulation and filtering to get the data into a format that the Deep Learning algorithm needs for training or inference and then sends the data into a Deep Learning algorithm. Using stage level scheduling combined with accelerator aware scheduling enables users to seamlessly go from ETL to Deep Learning running on the GPU by adjusting the container requirements for different stages in Spark within the same application. This makes writing these applications easier and can help with hardware utilization and costs.
There are other ETL use cases where users want to change CPU and memory resources between stages, for instance there is data skew or perhaps the data size is much larger in certain stages of the application. In this talk, I will go over the feature details, cluster requirements, the API and use cases. I will demo how the stage level scheduling API can be used by Horovod to seamlessly go from data preparation to training using the Tensorflow Keras API using GPUs.
The talk will also touch on other new Apache Spark 3.1 functionality, such as pluggable caching, which can be used to enable faster dataframe access when operating from GPUs.
Simplify Data Conversion from Spark to TensorFlow and PyTorch
Simplify Data Conversion from Spark to TensorFlow and PyTorchDatabricks In this talk, I would like to introduce an open-source tool built by our team that simplifies the data conversion from Apache Spark to deep learning frameworks.
Imagine you have a large dataset, say 20 GBs, and you want to use it to train a TensorFlow model. Before feeding the data to the model, you need to clean and preprocess your data using Spark. Now you have your dataset in a Spark DataFrame. When it comes to the training part, you may have the problem: How can I convert my Spark DataFrame to some format recognized by my TensorFlow model?
The existing data conversion process can be tedious. For example, to convert an Apache Spark DataFrame to a TensorFlow Dataset file format, you need to either save the Apache Spark DataFrame on a distributed filesystem in parquet format and load the converted data with third-party tools such as Petastorm, or save it directly in TFRecord files with spark-tensorflow-connector and load it back using TFRecordDataset. Both approaches take more than 20 lines of code to manage the intermediate data files, rely on different parsing syntax, and require extra attention for handling vector columns in the Spark DataFrames. In short, all these engineering frictions greatly reduced the data scientists’ productivity.
The Databricks Machine Learning team contributed a new Spark Dataset Converter API to Petastorm to simplify these tedious data conversion process steps. With the new API, it takes a few lines of code to convert a Spark DataFrame to a TensorFlow Dataset or a PyTorch DataLoader with default parameters.
In the talk, I will use an example to show how to use the Spark Dataset Converter to train a Tensorflow model and how simple it is to go from single-node training to distributed training on Databricks.
Scaling your Data Pipelines with Apache Spark on Kubernetes
Scaling your Data Pipelines with Apache Spark on KubernetesDatabricks There is no doubt Kubernetes has emerged as the next generation of cloud native infrastructure to support a wide variety of distributed workloads. Apache Spark has evolved to run both Machine Learning and large scale analytics workloads. There is growing interest in running Apache Spark natively on Kubernetes. By combining the flexibility of Kubernetes and scalable data processing with Apache Spark, you can run any data and machine pipelines on this infrastructure while effectively utilizing resources at disposal.
In this talk, Rajesh Thallam and Sougata Biswas will share how to effectively run your Apache Spark applications on Google Kubernetes Engine (GKE) and Google Cloud Dataproc, orchestrate the data and machine learning pipelines with managed Apache Airflow on GKE (Google Cloud Composer). Following topics will be covered: – Understanding key traits of Apache Spark on Kubernetes- Things to know when running Apache Spark on Kubernetes such as autoscaling- Demonstrate running analytics pipelines on Apache Spark orchestrated with Apache Airflow on Kubernetes cluster.
Scaling and Unifying SciKit Learn and Apache Spark Pipelines
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Scaling pipelines at the level of simple functions is desirable for many AI applications, however is not directly supported by Ray’s parallelism primitives. In this talk, Raghu will describe a pipeline abstraction that takes advantage of Ray’s compute model to efficiently scale arbitrarily complex pipeline workflows. He will demonstrate how this abstraction cleanly unifies pipeline workflows across multiple platforms such as Scikit-Learn and Spark, and achieves nearly optimal scale-out parallelism on pipelined computations.
Attendees will learn how pipelined workflows can be mapped to Ray’s compute model and how they can both unify and accelerate their pipelines with Ray.
Sawtooth Windows for Feature Aggregations
Sawtooth Windows for Feature AggregationsDatabricks In this talk about zipline, we will introduce a new type of windowing construct called a sawtooth window. We will describe various properties about sawtooth windows that we utilize to achieve online-offline consistency, while still maintaining high-throughput, low-read latency and tunable write latency for serving machine learning features.We will also talk about a simple deployment strategy for correcting feature drift – due operations that are not “abelian groups”, that operate over change data.
Redis + Apache Spark = Swiss Army Knife Meets Kitchen Sink
Redis + Apache Spark = Swiss Army Knife Meets Kitchen SinkDatabricks We want to present multiple anti patterns utilizing Redis in unconventional ways to get the maximum out of Apache Spark.All examples presented are tried and tested in production at Scale at Adobe. The most common integration is spark-redis which interfaces with Redis as a Dataframe backing Store or as an upstream for Structured Streaming. We deviate from the common use cases to explore where Redis can plug gaps while scaling out high throughput applications in Spark.
Niche 1 : Long Running Spark Batch Job – Dispatch New Jobs by polling a Redis Queue
· Why?
o Custom queries on top a table; We load the data once and query N times
· Why not Structured Streaming
· Working Solution using Redis
Niche 2 : Distributed Counters
· Problems with Spark Accumulators
· Utilize Redis Hashes as distributed counters
· Precautions for retries and speculative execution
· Pipelining to improve performance
Re-imagine Data Monitoring with whylogs and Spark
Re-imagine Data Monitoring with whylogs and SparkDatabricks In the era of microservices, decentralized ML architectures and complex data pipelines, data quality has become a bigger challenge than ever. When data is involved in complex business processes and decisions, bad data can, and will, affect the bottom line. As a result, ensuring data quality across the entire ML pipeline is both costly, and cumbersome while data monitoring is often fragmented and performed ad hoc. To address these challenges, we built whylogs, an open source standard for data logging. It is a lightweight data profiling library that enables end-to-end data profiling across the entire software stack. The library implements a language and platform agnostic approach to data quality and data monitoring. It can work with different modes of data operations, including streaming, batch and IoT data.
In this talk, we will provide an overview of the whylogs architecture, including its lightweight statistical data collection approach and various integrations. We will demonstrate how the whylogs integration with Apache Spark achieves large scale data profiling, and we will show how users can apply this integration into existing data and ML pipelines.
Raven: End-to-end Optimization of ML Prediction Queries
Raven: End-to-end Optimization of ML Prediction QueriesDatabricks Machine learning (ML) models are typically part of prediction queries that consist of a data processing part (e.g., for joining, filtering, cleaning, featurization) and an ML part invoking one or more trained models. In this presentation, we identify significant and unexplored opportunities for optimization. To the best of our knowledge, this is the first effort to look at prediction queries holistically, optimizing across both the ML and SQL components.
We will present Raven, an end-to-end optimizer for prediction queries. Raven relies on a unified intermediate representation that captures both data processing and ML operators in a single graph structure.
This allows us to introduce optimization rules that
(i) reduce unnecessary computations by passing information between the data processing and ML operators
(ii) leverage operator transformations (e.g., turning a decision tree to a SQL expression or an equivalent neural network) to map operators to the right execution engine, and
(iii) integrate compiler techniques to take advantage of the most efficient hardware backend (e.g., CPU, GPU) for each operator.
We have implemented Raven as an extension to Spark’s Catalyst optimizer to enable the optimization of SparkSQL prediction queries. Our implementation also allows the optimization of prediction queries in SQL Server. As we will show, Raven is capable of improving prediction query performance on Apache Spark and SQL Server by up to 13.1x and 330x, respectively. For complex models, where GPU acceleration is beneficial, Raven provides up to 8x speedup compared to state-of-the-art systems. As part of the presentation, we will also give a demo showcasing Raven in action.
Processing Large Datasets for ADAS Applications using Apache Spark
Processing Large Datasets for ADAS Applications using Apache SparkDatabricks Semantic segmentation is the classification of every pixel in an image/video. The segmentation partitions a digital image into multiple objects to simplify/change the representation of the image into something that is more meaningful and easier to analyze [1][2]. The technique has a wide variety of applications ranging from perception in autonomous driving scenarios to cancer cell segmentation for medical diagnosis.
Exponential growth in the datasets that require such segmentation is driven by improvements in the accuracy and quality of the sensors generating the data extending to 3D point cloud data. This growth is further compounded by exponential advances in cloud technologies enabling the storage and compute available for such applications. The need for semantically segmented datasets is a key requirement to improve the accuracy of inference engines that are built upon them.
Streamlining the accuracy and efficiency of these systems directly affects the value of the business outcome for organizations that are developing such functionalities as a part of their AI strategy.
This presentation details workflows for labeling, preprocessing, modeling, and evaluating performance/accuracy. Scientists and engineers leverage domain-specific features/tools that support the entire workflow from labeling the ground truth, handling data from a wide variety of sources/formats, developing models and finally deploying these models. Users can scale their deployments optimally on GPU-based cloud infrastructure to build accelerated training and inference pipelines while working with big datasets. These environments are optimized for engineers to develop such functionality with ease and then scale against large datasets with Spark-based clusters on the cloud.
Massive Data Processing in Adobe Using Delta Lake
Massive Data Processing in Adobe Using Delta LakeDatabricks At Adobe Experience Platform, we ingest TBs of data every day and manage PBs of data for our customers as part of the Unified Profile Offering. At the heart of this is a bunch of complex ingestion of a mix of normalized and denormalized data with various linkage scenarios power by a central Identity Linking Graph. This helps power various marketing scenarios that are activated in multiple platforms and channels like email, advertisements etc. We will go over how we built a cost effective and scalable data pipeline using Apache Spark and Delta Lake and share our experiences.
What are we storing?
Multi Source – Multi Channel Problem
Data Representation and Nested Schema Evolution
Performance Trade Offs with Various formats
Go over anti-patterns used
(String FTW)
Data Manipulation using UDFs
Writer Worries and How to Wipe them Away
Staging Tables FTW
Datalake Replication Lag Tracking
Performance Time!
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Ann Naser Nabil- Data Scientist Portfolio.pdf
Ann Naser Nabil- Data Scientist Portfolio.pdfআন্ নাসের নাবিল I am a data scientist with a strong foundation in economics and a deep passion for AI-driven problem-solving. My academic journey includes a B.Sc. in Economics from Jahangirnagar University and a year of Physics study at Shahjalal University of Science and Technology, providing me with a solid interdisciplinary background and a sharp analytical mindset.
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AI-Powered Disease Prediction & Drug Recommendation System – Deployed on Render, delivering real-time health insights through predictive analytics.
Mood-Based Movie Recommendation Engine – Uses genre preferences, sentiment, and user behavior to generate personalized film suggestions.
Medical Image Segmentation with GANs (Ongoing) – Developing generative adversarial models for cancer and tumor detection in radiology.
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Data Visualization
Preprocessing Pipelines
Automated Benchmarking of Machine Learning Models
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HershAggregator (2).pdf musicretaildistribution
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Lagos School of Programming Final Project Updated.pdf
Lagos School of Programming Final Project Updated.pdfbenuju2016 A PowerPoint presentation for a project made using MySQL, Music stores are all over the world and music is generally accepted globally, so on this project the goal was to analyze for any errors and challenges the music stores might be facing globally and how to correct them while also giving quality information on how the music stores perform in different areas and parts of the world.
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Controlling Financial Processes at a Municipality
Controlling Financial Processes at a MunicipalityProcess mining Evangelist
The fourth speaker at Process Mining Camp 2018 was Wim Kouwenhoven from the City of Amsterdam. Amsterdam is well-known as the capital of the Netherlands and the City of Amsterdam is the municipality defining and governing local policies. Wim is a program manager responsible for improving and controlling the financial function.
A new way of doing things requires a different approach. While introducing process mining they used a five-step approach:
Step 1: Awareness
Introducing process mining is a little bit different in every organization. You need to fit something new to the context, or even create the context. At the City of Amsterdam, the key stakeholders in the financial and process improvement department were invited to join a workshop to learn what process mining is and to discuss what it could do for Amsterdam.
Step 2: Learn
As Wim put it, at the City of Amsterdam they are very good at thinking about something and creating plans, thinking about it a bit more, and then redesigning the plan and talking about it a bit more. So, they deliberately created a very small plan to quickly start experimenting with process mining in small pilot. The scope of the initial project was to analyze the Purchase-to-Pay process for one department covering four teams. As a result, they were able show that they were able to answer five key questions and got appetite for more.
Step 3: Plan
During the learning phase they only planned for the goals and approach of the pilot, without carving the objectives for the whole organization in stone. As the appetite was growing, more stakeholders were involved to plan for a broader adoption of process mining. While there was interest in process mining in the broader organization, they decided to keep focusing on making process mining a success in their financial department.
Step 4: Act
After the planning they started to strengthen the commitment. The director for the financial department took ownership and created time and support for the employees, team leaders, managers and directors. They started to develop the process mining capability by organizing training sessions for the teams and internal audit. After the training, they applied process mining in practice by deepening their analysis of the pilot by looking at e-invoicing, deleted invoices, analyzing the process by supplier, looking at new opportunities for audit, etc. As a result, the lead time for invoices was decreased by 8 days by preventing rework and by making the approval process more efficient. Even more important, they could further strengthen the commitment by convincing the stakeholders of the value.
Step 5: Act again
After convincing the stakeholders of the value you need to consolidate the success by acting again. Therefore, a team of process mining analysts was created to be able to meet the demand and sustain the success. Furthermore, new experiments were started to see how process mining could be used in three audits in 2018.
Feature Engineering for Electronic Health Record Systems
Feature Engineering for Electronic Health Record SystemsProcess mining Evangelist Oak Ridge National Laboratory (ORNL) is a leading science and technology laboratory under the direction of the Department of Energy.
Hilda Klasky is part of the R&D Staff of the Systems Modeling Group in the Computational Sciences & Engineering Division at ORNL. To prepare the data of the radiology process from the Veterans Affairs Corporate Data Warehouse for her process mining analysis, Hilda had to condense and pre-process the data in various ways. Step by step she shows the strategies that have worked for her to simplify the data to the level that was required to be able to analyze the process with domain experts.
Sets theories and applications that can used to imporve knowledge
Sets theories and applications that can used to imporve knowledgesaumyasl2020 This is mathematical ppt
Transforming health care with ai powered
Transforming health care with ai poweredgowthamarvj Transforming health care with ai powered dieases
Patient data
How to regulate and control your it-outsourcing provider with process mining
How to regulate and control your it-outsourcing provider with process miningProcess mining Evangelist Oliver Wildenstein is an IT process manager at MLP. As in many other IT departments, he works together with external companies who perform supporting IT processes for his organization. With process mining he found a way to monitor these outsourcing providers.
Rather than having to believe the self-reports from the provider, process mining gives him a controlling mechanism for the outsourced process. Because such analyses are usually not foreseen in the initial outsourcing contract, companies often have to pay extra to get access to the data for their own process.
Multi-tenant Data Pipeline Orchestration
Multi-tenant Data Pipeline OrchestrationRomi Kuntsman Multi-Tenant Data Pipeline Orchestration — Romi Kuntsman @ DataTLV 2025
In this talk, I unpack what it really means to orchestrate multi-tenant data pipelines at scale — not in theory, but in practice. Whether you're dealing with scientific research, AI/ML workflows, or SaaS infrastructure, you’ve likely encountered the same pitfalls: duplicated logic, growing complexity, and poor observability. This session connects those experiences to principled solutions.
Using a playful but insightful "Chips Factory" case study, I show how common data processing needs spiral into orchestration challenges, and how thoughtful design patterns can make the difference. Topics include:
Modeling data growth and pipeline scalability
Designing parameterized pipelines vs. duplicating logic
Understanding temporal and categorical partitioning
Building flexible storage hierarchies to reflect logical structure
Triggering, monitoring, automating, and backfilling on a per-slice level
Real-world tips from pipelines running in research, industry, and production environments
This framework-agnostic talk draws from my 15+ years in the field, including work with Airflow, Dagster, Prefect, and more, supporting research and production teams at GSK, Amazon, and beyond. The key takeaway? Engineering excellence isn’t about the tool you use — it’s about how well you structure and observe your system at every level.
Process Mining as Enabler for Digital Transformations
Process Mining as Enabler for Digital TransformationsProcess mining Evangelist Raiffeisen Bank International (RBI) is a leading Retail and Corporate bank with 50 thousand employees serving more than 14 million customers in 14 countries in Central and Eastern Europe.
Jozef Gruzman is a digital and innovation enthusiast working in RBI, focusing on retail business, operations & change management. Claus Mitterlehner is a Senior Expert in RBI’s International Efficiency Management team and has a strong focus on Smart Automation supporting digital and business transformations.
Together, they have applied process mining on various processes such as: corporate lending, credit card and mortgage applications, incident management and service desk, procure to pay, and many more. They have developed a standard approach for black-box process discoveries and illustrate their approach and the deliverables they create for the business units based on the customer lending process.
How to regulate and control your it-outsourcing provider with process mining
How to regulate and control your it-outsourcing provider with process miningProcess mining Evangelist
Portable UDFs: Write Once, Run Anywhere
- 1. Portable UDFs : Write Once, Run Anywhere Rongrong Zong & Tejas Patil Software Engineer, Facebook
- 2. Introductions § Presto committer § TL in Presto Team § Apache Spark committer § Co-founded Spark team @ FB § TL in Spark Team Tejas Patil Rongrong Zhong
- 3. Agenda § Why Portable UDFs? § What are Portable UDFs? § How do Portable UDFs work?
- 4. Why Portable UDFs ?
- 5. Why Portable UDFs ? User Presto UDF
- 7. Why Portable UDFs ? User Presto UDF Does not work L
- 8. Presto’s ‘array_contains’ UDF Spark’s ‘array_contains’ UDF
- 9. Why Portable UDFs ? User Presto UDF Spark UDF
- 10. Why Portable UDFs ? • Learn engine specifics
- 11. Why Portable UDFs ? • Learn engine specifics • Rewrite UDF logic
- 12. Why Portable UDFs ? • Learn engine specifics • Rewrite UDF logic • Bugs in rewrite • Eg. Corner cases, NULL, 0, empty, negative..
- 13. Why Portable UDFs ? User Presto UDF Spark UDF Presto UDF v1 v2 v1
- 14. Why Portable UDFs ? • Learn engine specifics • Rewrite UDF logic • Bugs in rewrite • Maintain both versions
- 15. What are Portable UDFs?
- 17. Hello World! • Supported types • boolean • byte (tinyint) • short (smallint) • int (integer) • long (bigint) • float (real) • double • String (varchar) • List (array) • Map Primitive types can be boxed
- 18. Function Metadata • Function management metadata • Ownership, description, etc • Function resolution metadata • Function signature, call convention, determinism, etc • Function execution metadata • Package location, version, boxed/unboxed, etc
- 19. How do Portable UDFs work?
- 21. Running on Spark
- 22. Running on Spark Spark Driver Query
- 23. Running on Spark Spark Driver Metastore Query
- 24. Running on Spark
- 25. Running on Spark
- 26. Running on Spark
- 27. Running on Spark Spark Executor Spark Driver Metastore Query Spark Executor Spark Executor Maven server
- 28. Running on Spark Spark Executor Spark Driver Metastore Query Spark Executor Spark Executor Maven server
- 31. Running on Presto – UDF • Presto supports dynamically registered SQL functions (UDF) already • We extended this to also support external functions • External functions are run remotely in a separate cluster
- 32. Running on Presto - Portable UDFs • Augment function metadata to indicate whether a function is local or remote • Planner change to allow batch processing • Per catalog configuration on what remote cluster to send requests to
- 33. Running on Presto -- Portable UDF Support
- 34. Running on Presto -- UDF Servers • Thrift service • invokeUdf(functionHandle, inputs) • Trying to prefetch the packages in advance to reduce overhead • Retrieving function metadata from metastore using function handle and construct the java method to be invoked • Excute the function for all inputs and return result