In this era of use Deep Learning for everything, one may be wondering why you would even use TF-IDF for any task at all ?!! The truth is TF-IDF is easy to understand, easy to compute and is one of the most versatile statistic that shows the relative importance of a word or phrase in …
Stop words are a set of commonly used words in any language. For example, in English, “the”, “is” and “and”, would easily qualify as stop words. In NLP and text mining applications, stop words are used to eliminate unimportant words, allowing applications to focus on the important words instead. While it is fairly easy to …
A Hands-On Word2Vec Tutorial Using the Gensim Package The idea behind Word2Vec is pretty simple. We’re making an assumption that the meaning of a word can be inferred by the company it keeps. This is analogous to the saying, “show me your friends, and I’ll tell who you are”. If you have two words that …
One of the really nice things about spark is the ability to read input files of different formats right out of the box. Though this is a nice to have feature, reading files in spark is not always consistent and seems to keep changing with different spark releases. This article will show you how to …
How to read CSV & JSON files in Spark – word count example Read More »
When talking about text similarity, different people have a slightly different notion on what text similarity means. In essence, the goal is to compute how ‘close’ two pieces of text are in (1) meaning or (2) surface closeness. The first is referred to as semantic similarity and the latter is referred to as lexical similarity. Although the methods for lexical similarity …
Opinion Driven Decision Support System (ODSS) refers to the use of large amounts of online opinions to facilitate business and consumer decision making. The idea is to combine the strengths of search technologies with opinion mining and analysis tools to provide a synergistic decision making platform. The research and engineering problems related to developing such …
Leveraging large amounts of opinions for decision making Read More »