In specific, read about LDARank mechanism (published 2012). It aims to perform semantic analysis on web documents for the recognition of the prominent topics and words within them. It has evolved into LSHrank (Latent Semantic Headless rank), a benchmark web crawler that recognizes Web 2.0/3.0 characteristics (journal paper under review) that search engines value in their ranking mechanisms and produces search engine optimal content (journal paper in press).
Moreover, I could offer you a personalized SEO strategy for your website in order to achieve higher rankings in Search Engine Result Pages (SERPs) which could include services from LSHrank.
Contact me to discuss on how I could help you improve the quality of your website.