Document retrieval is the process of finding and obtaining documents from a collection based on specific queries or criteria. This can involve searching through databases, digital libraries, or even physical archives to locate relevant information. The goal is to efficiently access documents that meet the user's needs, whether for research, legal purposes, or personal use. Modern document retrieval systems often utilize algorithms and indexing techniques to improve search accuracy and speed. Technologies such as search engines and machine learning play a significant role in enhancing the effectiveness of these systems, allowing users to quickly find the information they require from vast amounts of data.