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Six steps in data science 18 Aug 2013 | 11:37 am
"Data science" and "Big data" has become a very hot term in last 2 years. Since the data storage price dropped significantly, enterprises and web companies has collected huge amount of their customer...
OLAP operation in R 30 Jul 2013 | 01:02 am
OLAP (Online Analytical Processing) is a very common way to analyze raw transaction data by aggregating along different combinations of dimensions. This is a well-established field in Business Intell...
Text processing (part 2): Inverted Index 23 Feb 2013 | 01:08 pm
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 be easily retrieved by a query. I'll used the popular open sou...
Text processing (part 2): Inverted Index 23 Feb 2013 | 01:08 pm
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 be easily retrieved by a query. I'll used the popular open sou...
Text Processing (part 1) : Entity Recognition 16 Feb 2013 | 11:59 am
Entity recognition is commonly used to parse unstructured text document and extract useful entity information (like location, person, brand) to construct a more useful structured representation. It i...
Text Processing (part 1) : Entity Recognition 16 Feb 2013 | 11:59 am
Entity recognition is commonly used to parse unstructured text document and extract useful entity information (like location, person, brand) to construct a more useful structured representation. It i...
Basic Planning Algorithm 12 Feb 2013 | 08:57 pm
You can think of planning as a graph search problem where each node in the graph represents a possible "state" of the reality. A directed edge from nodeA to nodeB representing an "action" is available...
Basic Planning Algorithm 12 Feb 2013 | 08:57 pm
You can think of planning as a graph search problem where each node in the graph represents a possible "state" of the reality. A directed edge from nodeA to nodeB representing an "action" is available...
Basic planning algorithm 10 Feb 2013 | 08:59 pm
Planning can be think of a Graph search problem where each node in the graph represent a possible "state" of the reality. A directed edge from nodeA to nodeB represent an "action" is available to tra...
Optimization in R 14 Jan 2013 | 01:10 pm
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 that the benefit is maximized. More formally, optimization...
