Update: Added a second talk
Another great event lined up for the next meetup. Same time, same place. See you there.
Please register on the Skillsmatter page as well.
Rolling Hashes and Compression Algorithms - Dr John Graham-Cumming (@jgrahamc)
Rolling hashes are fast to compute and can be used to identify 'similar' strings in blocks of data. This talk will will look at some uses of rolling hashes for string comparison and compression focussing on the rsync protocol, a spam filter, and a delta compression technique.
Bio: Dr John Graham-Cumming is an experienced programmer who works for CloudFlare, Inc. He is probably best known for having originated a successful petition to the British Government asking for an apology for its persecution of Alan Turing. He is author of The Geek Atlas, and started an organization whose aim is to build Charles Babbage's Analytical Engine.
Mixture of Markov Chains - Jose Llarena
Mixture of Markov Chains is a simple generative probabilistic model that can applied directly to raw sequential data like clickstreams or DNA sequences without any further pre-processing. In this talk I will describe its representation as a graphical model, how it relates to other probabilistic models, how to estimate its parameters via Expectation-Maximization, and how to use for clustering, data generation, density estimation and missing data completion.
Bio: Jose Llarena has been writing intelligent software since 2001 in a variety of industries including fraud detection and e-learning. He has obtained AI-related degrees from the Universities of Sussex and Edinburgh and is an active member of the London developer community.