On the Delivery of Data Science Projects @IanOzsvald – ianozsvald.com Ian Ozsvald Business, Analytics and Data Science meetup 2019-02

 Interim Chief Data Scientist  19+ years experience  Quickly build strategic data science plans  Team coaching & public courses Introductions By [ian]@ianozsvald[.com] Ian Ozsvald

 Numerate management ask good data-driven questions  You have suitable data  Well defined achievable outcomes are defined  Change is enabled by these projects Data Science shows value when... By [ian]@ianozsvald[.com] Ian Ozsvald

 “Make us more [money/…]” - give me magic!  Desire over need – vanity projects!  Lack of technical leadership – poor/missing specs  Bad data – lies, mistakes and confusion  Lack of client buy-in – no burning need Common delivery problems By [ian]@ianozsvald[.com] Ian Ozsvald

 Audience – your observations? What problems have you seen? By [ian]@ianozsvald[.com] Ian Ozsvald

 States a clearly defined problem  Guesses at unknowns (and project torpedoes!)  Proposed milestones and Gold Standard/metrics  Clear “definition of done”  Story from 10 years back You need a Project Specification By [ian]@ianozsvald[.com] Ian Ozsvald

 Do you understand your data? – What’s good and bad? – What relationships exist?  Build exportable Notebook as html artefact  Read Bertil’s piece on Medium “Data Story” By [ian]@ianozsvald[.com] Ian Ozsvald

 Reduce mental load for common decisions – Cookiecutter data-science – Watermark – Pandas-profiling – Anaconda Standardised Approaches By [ian]@ianozsvald[.com] Ian Ozsvald

Code quality By [ian]@ianozsvald[.com] Ian Ozsvald Attrib: https://devrant.com/rants/347670/code-quality-as-measured-in-wtfs-minute

 Encode assumptions using asserts  Refactor to modules  Add unit-tests  Visual reports with analyst interpretations  Diagnostics e.g. yellowbrick for sklearn Continuously improving code quality By [ian]@ianozsvald[.com] Ian Ozsvald

 Code review (with a check-list & PEP8)  nbdime for diffs  “Data Defences” - regular critiques by colleagues on your project Continuously improving project quality By [ian]@ianozsvald[.com] Ian Ozsvald

 Exposure to new processes  Enforced clear communication  Balanced consumption & contribution  You’re more visible & valuable Contributing to Open Source gets you By [ian]@ianozsvald[.com] Ian Ozsvald

 Easy first deliveries – reports  Get to a minimal working delivery as soon as possible  Consider papermill for deployable Notebooks Continuous delivery to clients By [ian]@ianozsvald[.com] Ian Ozsvald

My “Successfully Delivering Data Science Projects” course – sold out – join my training list via ianozsvald.com Resources By [ian]@ianozsvald[.com] Ian Ozsvald

 Derisk early and often  Communicate visually, all the time  Honesty throughout your work  Strive to continuous improvement  Consider speaking at PyDataLondon 2019 July 12-14 Summary By [ian]@ianozsvald[.com] Ian Ozsvald