Components of a Search Indexer
Search indexer is the important component of search engine that helps it to retrieve relevant information in optimized way against the user query. Every search engine have different search indexer component but generally they have the following common component
- Crawling engine: With the help of this component a search engine fetches the information’s from database, data structure, file system and website. It searches links that connect the other documents or resources within the data. After discovering links it retrieve the content and information. It manages URL queue and handle duplicate URL.
- Document Processing: This component helps search engine in indexing the retrieval information. It also helps in text extraction, document conversion and removing content that are not relevant to user’s query. It also find and remove duplicate content.
- Tokenization: This component breaks the text or sequence of text like sentence into smaller chunks called tokens. This token can be word or phrase or subwords. It helps the search engine in understanding the structure of the text. It analyze the text and convert it into tokens for further process.
- Inverted Index: Inverted index is a data structure that maps the tokens with the document in which they appear. It basically store the frequency of words along with the position where that word appears. This data structure is very fast in retrieving information. With the help of this component search engine can retrieve relevant information very fast .
- Ranking and scoring: Search engine ranks the web page according to the relevance of information against the user query. Search engine assign a algorithm that rank the web page according to their relevance to the user’s query. Example of Ranking algorithm are TF-IDF(Term Frequency-Inverse Document Frequency) and page rank.
Role of Search Indexer in Information Retrieval of Search Engine
When the user searches a query on a search engine, the search engine fetches the relevant information very fast and displays these web pages on the search engine result page (SERP). So a search engine does this with the help of a search indexer. This helps a search engine retrieve relevant data from the data structure, index the website, and display results very quickly on the search result page and in ranking a website. With the help of this search engine, it provides a better user experience.
Important Topics of Search Indexers
- What is a Search Indexer?
- Components of a Search Indexer
- How Search Indexers Work
- Role of Search Indexer in Information Retrieval
- How can a Search Indexer Improve your Website?
- Types of Search Indexer
- Difference Between Search Indexer vs. Search Engine
- Examples of Search Indexers
- Conclusion
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