data science (10)


Dealing with Very Big Files using Pandas DataFrame

Recently working on some prototype of a demand prediction solution I faced with a couple of problems. Very big files. Such files cannot be loaded to memory since they are bigger then available one. Files may have invalid lines which are located in the very end of files. This circumstance breaks parsing and doesn’t allow to […]




Bike Sharing Demand Questions

Recently a group of enthusiasts in Data Science which I lead had a discussion about Kaggle competition Bike Sharing Demand. I presented a possible solution and during discussion were raised several questions which I was not easy to answer. Under the cut I’ll state those questions and will try to answer in the followup articles. […]




Online competitions for newbies in Machine Learning

This is a navigation map for dummies like me in Data Science. Kaggle have few simple projects which the community already solved and there are some reviews about them which you can use for self assessment. Data sets provides plenty of data for possible questions.




Complete list of courses for quick start in Data Science

In our Data Science group we raised a question about courses which person could take to get started with Data Science. Some time ago I was applying to one investment program where I had to present the list of courses which I need funds. When I created that list I was thinking about quick introduction […]




Bottom-Up strategy for implementing changes in the organization

I’m certainly not the first one who faces obstacles in implementing changes in the organization from the bottom up and not the last one. I want to share some of my observations, conclusions and mistakes that I made along the way. Perhaps someone was in a similar situation, faced with similar obstacles and he managed […]




Data Science Glossary

In this article I put everything which I think important to be aware when you start learning Data Science. It includes math, statistic, DS concepts. I put examples where I can. The article is updated from time to time.




Data Science self-assessment topic list

Running a group by specialization is connected with understanding of the current awareness of the group about the subject that they’re interested in. This knowledge gives the opportunity to build a relevant road map for learning of the subject. Now I’m trying to build an assessment to get this understanding for the group which I’m […]



Quick glance at Dialogflow chat bot platform

I need to build a bot which can keep a small talk conversation in Slack and be smart enough to understand topics about programming. In the end the bot should able to give links to documents from the internal storage, or web resources using non-predefined answers. I’ve got no experience in bot development, but whatever […]




Presentations of Data Science project results

Short summary about presenting data science project results to public.




Road to Machine Learning and Data Science

The list of free and non-free resources and courses for quick start in Machine Learning and Data Science. I built this list by searching in Google and taking references from articles about ML and data science. It is updated from time to time and you also can suggest one in comments. The discipline can be divided […]