Distributional Semantics
Lexical SemanticsDistributional Semantics is a theory stating that a word's meaning comes from the contexts where it appears — 'you shall know a word by the company it keeps.' This is the foundation of embeddings and all AI language understanding, because models like Word2Vec (2013) and BERT learn meanings precisely from analyzing word co-occurrence patterns in massive text corpora.
In SEO practice, this means that creating unique term combinations (like 'SEO' + 'embedding space' + 'retrieval score' instead of generic 'SEO' + 'keywords' + 'links') gives you higher IDF, which delivers better scores in AI Search re-ranking. Novel co-occurrences distinguish your content from generic competitor articles and build a unique semantic vector.
In practice, analyze the top 5 competitor articles on your topic and identify which terms they all use together; then deliberately add unique combinations that nobody else uses. Distributional Semantics is measurable through co-occurrences: the frequency of term co-occurrence. This directly impacts the TF-IDF score of each chunk.