What is Probabilistic Latent Semantic Indexing?

Probabilistic Latent Semantic Indexing (PLSI) is the ability to locate documents that are relevant to the user's query even if they do not contain any of the words in the user's query text. It is also about the ability to ignore documents that do contain words from the user's query but which are not relevant. More.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.