Discourse semantics is the study of how meaning is built by connecting units of text ...
Nizam SEO Community Latest Articles
Contextual Word Embeddings vs. Static Embeddings
Static word embeddings assign one fixed vector per word regardless of context, while contextual word ...
Semantic Role Theory vs. Frame Semantics
What is Semantic Role Theory?Semantic Role Theory provides a predicate-centered model of meaning. Each verb (or ...
Vector Databases & Semantic Indexing
Search is shifting from keyword grids to meaning-first retrieval. Instead of relying solely on inverted indexes, ...
Dense vs. Sparse Retrieval Models
Dense and sparse retrieval are two families of information retrieval methods, where sparse retrieval ranks ...
Query Expansion vs. Query Augmentation
What is Query Expansion?Query expansion (QE) is a classic technique in information retrieval that improves recall ...
What is BM25 and Probabilistic IR?
Classic keyword search asked “Which documents contain the terms?” Probabilistic IR reframes the question: “Given a ...
What is Re-ranking?
Re-ranking is the retrieval stage that reorders an already retrieved candidate list, scoring each query ...
Schema.org & Structured Data for Entities
Schema.org structured data for entities is markup, usually written in JSON-LD, that defines the type, ...
What are Entity Salience & Entity Importance?
Entity salience and entity importance are two measures search engines use to weigh entities: salience ...