Hacker News is a site started by the startup incubator Y Combinator, where user-submitted stories (known as "posts") are voted and commented upon, similar to reddit.
Hacker News is extremely popular in technology and startup circles, and posts that make it to the top of Hacker News' listings can get hundreds of thousands of visitors as a result.
Data science concepts have been applied on raw data like comments, time series data to extract the interesting pattern or useful information. The amount of ask posts created in each hour of the day, along with the number of comments received and the average number of comments ask posts receive by hour are analysed to improve the profits .