Pragmatic Programming Techniques

"Cold Start" is a common problem happens quite frequent in recommendation system.  When a new item enters, there is no prior histo...

"Data science" and "Big data" has become a very hot term in last 2 years.  Since the data storage price dropped signific...

OLAP (Online Analytical Processing) is a very common way to analyze raw transaction data by aggregating along different combinations of dime...

This is the second part of my text processing series.  In this blog, we'll look into how text documents can be stored in a form that can...

Entity recognition is commonly used to parse unstructured text document and extract useful entity information (like location, person, brand)...

You can think of planning as a graph search problem where each node in the graph represents a possible "state" of the reality. A ...

Optimization is a very common problem in data analytics.  Given a set of variables (which one has control), how to pick the right value such...