new and fresh ideas with stack exchange dataset I'm a new bee for data analysis . i need to work on a research project in big data analysis. first of all i search for a dataset and i found interest in stack exchange  data dump. however i browse for researches i found a lot .And whatever i thought about a idea based on this dataset , its already done by someone else . 
please help me out with a new and useful idea for my research .
It might help to have a bit more information on what you want to do, but have a look at Kaggle - it's a regular big data science competition, all of the data sets are huge and available for download.

There's also some smaller datasets made available by Tableau.

Hope that give you some inspiration!