Recurso léxico é um termo usado em processamento de linguagem natural (NLP) to describe a set of words, phrases, and their meanings that are utilized by sistemas de IA to comprehend and generate human language. These resources can include dictionaries, thesauri, and corpora that provide semantic, syntactic, and contextual information about language.
No contexto de IA, recursos léxicos são essenciais para tarefas como tradução automática, sentiment analysis, and text summarization. They enable AI models to understand the nuances of language, including synonyms, antonyms, and the various meanings words can take depending on context. For example, a lexical resource might help an AI determine that the word “bank” can refer to a financial institution or the side of a river, depending on surrounding words.
Moreover, lexical resources can be structured in various ways. Some are simple lists of words, while others are complex databases that include relationships between words (like hypernyms and hyponyms) or even their usage in different contexts (like formal vs. informal). By leveraging these resources, AI systems can improve their accuracy and effectiveness in language-related tasks, leading to better user experiences in applications such as chatbots and virtual assistants.