Sep 21, 2020How to determine the sample size in AB Testing?An important step before we start an AB Testing is to determine the sample size of our experiment. It’s part of the design. We need to choose the right performance metrics before this step. Is the larger the Sample Size the better? We all know that, if the sample size is too small, then it’s not representative. However…Ab Testing4 min readAb Testing4 min read
Jan 12, 201912 ways of Feature Selection/Dimension ReductionIt’s important to choose the best features for the machine learning models. Removing irrelevant features results in: Accuracy: a better performing model Interpretability: easier to understand Speed: Model can run faster There are various ways for selecting features, and it depends on the data itself and the result we want…Feature Selection4 min readFeature Selection4 min read
Dec 17, 2018How to generate an LDA Topic Model for Text AnalysisIn natural language processing, latent Dirichlet allocation (LDA) is a “generative statistical model” that allows sets of observations to be explained by unobserved groups that explain why some parts of the data are similar. So this is categorized as unsupervised learning. For example, if observations are words collected into documents…Lda10 min readLda10 min read
