Infomap is an NLP software from Stanford which simulates a variant of a Latent Semantic Analysis, with term-term matrices (instead of term-document matrices) and singular value decomposition. In a nutshell it is a C program which is readymade for you to build semantic vector spaces and compute similarities between words or concepts.
To install it on Ubuntu, make sure you follow these steps:
- Install g++ (sudo apt-get install g++)
- Install gdmb (with dbm-compatible modules – refer to the README/ INSTALL file)
- Install Infomap
Hope that works!