👉 Indices engineering is a critical aspect of data preprocessing, particularly in natural language processing (NLP) and information retrieval. It involves the creation and optimization of indices to improve the efficiency and effectiveness of searching, indexing, and retrieval processes. These indices are data structures designed to map content (such as text documents or web pages) to their corresponding positions or locations, enabling rapid access and retrieval. Common types of indices include inverted indexes, which map words or phrases to the documents they appear in, and full-text indexes, which store the entire content of documents. Indices engineering focuses on optimizing these structures to minimize storage requirements, enhance search speed, and maintain accuracy, thereby significantly impacting the performance of NLP systems and information retrieval engines.