Building Data Apps with Python
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The document provides an overview of building data products with Python, highlighting the roles of instructors and assistants, as well as essential concepts in data science, including data ingestion, wrangling, computation, and visualization. It emphasizes the importance of human feedback in model training and introduces a practical project involving a book club recommender system using Goodreads data. The structure of the course encourages collaboration and continuous engagement with the material.
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- 1. Building Data Products with Python District Data Labs
- 2. Links to various resources Introduction to Python http://bit.ly/1gJ73Tt Github Repository http://bit.ly/1eLBzki
- 3. About the Instructor Benjamin Bengfort Data Science: ● MS Computer Science from North Dakota State ● PhD Candidate in CS at the University of Maryland ● Data Scientist at Cobrain Company in Bethesda, MD ● Board member of Data Community DC ● Lecturer at Georgetown University Python Programmer: ● Python developer for 7 years ● Open source contributor ● My work on Github: https://github.com/bbengfort
- 4. About the Instructor Benjamin Bengfort I am available to collaborate and answer questions for all of my students. Twitter: twitter.com/bbengfort LinkedIn: linkedin.com/in/bbengfort Github: github.com/bbengfort Email: [email protected]
- 5. About the Teaching Assistant Keshav Magge ● MS Computer Science from University of Houston ● Lead Data/Software Engineer at Cobrain Company in Bethesda, MD Python Programmer: ● Python developer for 7 years ● Plone/Zope for 2 years, Django for 5 years ● My work on Github: https://github.com/keshavmagge
- 6. About the Teaching Assistant Keshav Magge Reach out to me to talk about all things python/data or just about life Twitter: twitter.com/keshavmagge LinkedIn: linkedin.com/pub/keshav-magge/12/a2a/324/ Github: github.com/keshavmagge Email: [email protected]
- 8. Hilary Mason A data product is a product that is based on the combination of data and algorithms. ” “
- 10. Mike Loukides A data application acquires its value from the data itself, and creates more data as a result. It’s not just an application with data; it’s a data product. Data science enables the creation of data products. ” “
- 12. The Data Science Pipeline
- 13. Data Ingestion Data Munging and Wrangling Computation and Analyses Modeling and Application Reporting and Visualization
- 14. Data Ingestion ● There is a world of data out there- how to get it? Web crawlers, APIs, Sensors? Python and other web scripting languages are custom made for this task. ● The real question is how can we deal with such a giant volume and velocity of data? ● Big Data and Data Science often require ingestion specialists!
- 15. ● Warehousing the data means storing the data in as raw a form as possible. ● Extract, transform, and load operations move data to operational storage locations. ● Filtering, aggregation, normalization and denormalization all ensure data is in a form it can be computed on. ● Annotated training sets must be created for ML tasks. Data Wrangling
- 16. ● Hypothesis driven computation includes design and development of predictive models. ● Many models have to be trained or constrained into a computational form like a Graph database, and this is time consuming. ● Other data products like indices, relations, classifications, and clusters may be computed. Computation and Analyses
- 17. Modeling and Application This is the part we’re most familiar with. Supervised classification, Unsupervised clustering - Bayes, Logistic Regression, Decision Trees, and other models. This is also where the money is.
- 18. ● Often overlooked, this part is crucial, even if we have data products. ● Humans recognize patterns better than machines. Human feedback is crucial in Active Learning and remodeling (error detection). ● Mashups and collaborations generate more data- and therefore more value! Reporting and Visualization
- 19. Don’t forget feedback! (Active Learning for Data Products)
- 20. What we’re going to build today SCIENCE BOOKCLUB!! ● A book club that chooses what to read via a recommender system. ● Uses GoodReads data to ingest and return feedback on books. ● Statistical model is a non- negative matrix factorization ● Reporting using Jinja (almost a web app)
- 21. Workflow 1. Setting up a Python skeleton 2. Creating and Running Tests 3. Wading in with a configuration 4. Ingestion with urllib and requests 5. Creating a command line admin with argparse 6. Wrangling with BeautifulSoup and SQLAlchemy 7. Modeling with numpy 8. Reporting with Jinja2
- 22. Octavo Architecture (really clear DSP) requests.py Ingestion Module Raw Data Storage Computational Data Storage Wrangling Module BeautifulSou p SQLAlchemy Recommender Module Numpy Reporting Module Jinja2Matplotlib
- 23. requests.py Octavo Architecture (really clear DSP) requests.py Ingestion Module Raw Data Storage Computational Data Storage Wrangling Module BeautifulSoup SQLAlchemy Recommender Module Numpy Reporting Module Jinja2 Matplotlib
- 24. How to tackle this course ...
- 25. How to tackle this course ... Lean into it- absorb as much as possible, don’t worry about falling behind - it will be in your head! Then afterwards - lets all digest it together (keep in touch)