Implementing a question analyzer for auto tagging

Question

What are good resources to go to for implementing a question analyzer?

I am trying to figure out how to auto-tag questions to make it easier for non-technical users to ask questions. I've found that using Bayes Theorem I can achieve this, but I have no idea how to implement it.

Any open source libraries or research papers on this?

Answer 1

Your algorithm would have to maintain a table (or something similar)

Word            Category
-------------------------------------
algo            algorithm
design          algorithm
...
...
libraries       library
open            open-source
open-source     open-source
paper           research-paper
research        research-paper
source          source-code
...

When you analyze the statement according to this table (after ignoring filler words)

1. "Any open source libraries or research papers on this?"

2. open source libraries research papers

3. 
open            open-source
source          source-code
open-source     open-source
libraries       library
research        research-paper
paper           research-paper
research-paper  research-paper

4. by a simple majority, (you can also use a more complex algorithm here,
   like assigning weights to the Categories)
selected category = research paper

As you keep on learning using your selected algorithm, your table keeps on getting updated, and you keep getting better results.