#39 WhyR pre-meeting: Segmentation in Surveys using NMF (talk+workshop)

This pre-meeting promotes Why R? 2019 Conference whyr.pl/2019 (regular registration ends August 31st!)

Working with high dimensional data? Often facing the need to group observations? This presentation is for you.

Segmentation should be balanced and distinctive, the discovered over- and under-indexed features within segments should create a meaningful story, and, ideally, the amount of differentiative factors that drives segmentation should be small.

The last requirement often becomes a bottleneck in a survey where respondents are asked an enormous amount of questions. One solution is the non-negative matrix factorization that, in one attempt, segments respondents and their features! The concept of the NMF decomposition and applications in R will be presented with the explanation of diagnostic plots.

The 30-minute presentation will be followed by a 60-minute workshop, so bring your laptops!

As usual, short contributions and announcements from the audience are always welcome. We want to be a diverse and inclusive group, please come, bring your friends. We're hoping for a nice crowd enjoying interesting talks and chats.

Our generous host Europace AG will prepare drinks and snacks for us!

See you there!

About the Speaker:

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 whyr.pl. Interested in R packages development and survival analysis models.

Currently explores and improves methods for quantitative marketing analyses and global surveys at Gradient Metrics.