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Information retrieval (IR) is the process of obtaining information system resources that are relevant to an information need from a collection of those resources. Searches can be based on full-text or other content-based indexing. Basically, Information retrieval system is a network of algorithms, which help search relevant data / documents as per the user requirement.
Eight types of information retrieval are: 1. Adversarial information retrieval.2. Automatic summarization.3. Multi-document summarization.4. Compound term processing.5. Cross-lingual retrieval.6. Document classification.7. Spam filtering.8. Question answering.
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