DSŁ-15 WhyR pre-meeting

Szanowi Państwo,

ten meetup upłynie pod znakiem R. Pierwszym mówcą będzie Francois Jacquet, który opowie o swoich doświadczeniach przy budowie modelu AI, na którym oparł swój biznes:

I would like to share the journey I took to build from scratch a production grade machine learning workflow for automated stock and sales management, with emphasis on:

1. Hurdles in accessing/cleaning data at a commercial company
2. How surprisingly fast it is to go from idea to working model these days and some feedback on R
3. How painful and key it is to make it production grade
4. Exchange with you on some principles I applied in my journey that helped a lot ( Lean start-up, Agile, continuous training...).
5. The challenges still to come (growth, reinforcement learning, database engineering,...)

Po krótkiej przerwie na networking i pizzę wystąpi Marcin Kosiński, w ramach trasy promującej konferencję whyR (http://whyr.pl/2019/) i opowie o:

Segmentation using NMF decomposition

From the nowadays segmentation, we require them to follow below features:

• it should be balanced,
• segments should be distinctive,
• the discovered over and under indexed features within segments should create a meaningful story,
• and in the best case the amount of differentiative factors that drives segmentation should be small.

The last requirement often is a bottleneck in the scenario of a survey where respondents are asked enormous amount of questions.
The solution, one from many, to this use case can be the nonnegative matrix factorization that in a one attempt segments respondents and their features!
I'll present concept of the NMF decomposition and I'll present applications in R, with the explanation of diagnostic plots.
Working with high dimensional data? Often facing the need to group observations? That's a good presentation for you.

Podsumowując Plan spotkania:

18.15 – 18.45 Francois Jacquet
18.45 – 19.10 Networking i pizza
19.10 – 19.45 Marcin Kosiński
19.45 – 19.50 Info o konferencji WhyR
20.00 - Afterparty jeśli będą chętni i czas pozwoli.

Sponsorem pizzy i symbolicznego co nieco w trakcie afterparty będą organizatorzy konferencji WhyR

Krótkie Bio prelegentów:

Francois Jacquet father of 3, after first life in IT (mainly C++ dev and project management), switched to operations in Renault Nissan then Lean & Supply Chain Management at European level for Hutchinson ( Automotive). Lecturer at Politechnika Łódzka in Supply chain & Production management. Machine Learning practitioner for 3 years and now founder of ArtInLean.
The dream I am realizing is to build a platform that will erase all those stupid wastes in supply chain, specially for perishable food, securing my family needs while trying to leave this world not so spoiled to them.

Marcin Kosiński has a master degree in Mathematical Statistics and Data Analysis specialty. Challenges seeker and devoted R language enthusiast. In the past, keen on the field of large-scale online learning and various approaches to personalized news article recommendation.
Community events host: organizer of Why R? conferences.
Interested in R packages development and survival analysis models. Currently explores and improves methods for quantitative marketing analyses and global surveys at Gradient Metrics.