A contextual rule describes how a word’s meaning or relevance changes with its surrounding context. Dictionary-based text analysis uses these rules to handle words with multiple meanings or grammatical functions instead of relying on simple keyword matching. section 5.6.1
Negation and changing meaning
A contextual rule can identify when negation changes a statement’s meaning, helping analysis distinguish nuanced sentiment from a simple positive-or-negative label. section 5.6.1
