Stemming may increase the number of relevant documents retrieved (recall)
Question
Stemming may increase the number of relevant documents retrieved (recall)
Solution
Yes, stemming can increase the number of relevant documents retrieved, also known as recall. Here's a step-by-step explanation:
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Stemming is a process in Natural Language Processing (NLP) that reduces words to their root or base form. For example, "running", "runs", and "ran" would all be stemmed to "run".
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When a search engine uses stemming, it can match a search term with documents containing variations of that term. For example, if you search for "run", a stemming algorithm would also retrieve documents containing "running", "runs", and "ran".
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This increases the number of documents retrieved because it broadens the search to include variations of the search term.
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Therefore, stemming can increase recall, which is the proportion of relevant documents that are retrieved out of all relevant documents available.
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However, it's important to note that while stemming can increase recall, it may also decrease precision, which is the proportion of retrieved documents that are relevant. This is because stemming can sometimes conflate words that have different meanings but the same root form, leading to irrelevant documents being retrieved.
Similar Questions
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