| What are web graphs? |
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| Web graphs represent the interconnected structure of the World Wide Web, where nodes represent web pages and edges denote hyperlinks between them. These graphs are vital for understanding web topology, ranking algorithms, and information retrieval systems like search engines. Analyzing web graphs helps uncover patterns in web navigation, influence propagation, and the spread of information online. |
| What are web crawlers? |
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| Web crawlers are automated programs that browse the internet, indexing web pages for search engines by following hyperlinks from seed URLs. They maintain search engine databases, adhere to robots.txt protocols, and ensure search results are relevant and up-to-date. |
| What are parallel web crawlers? |
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| Parallel web crawlers fetch web pages concurrently, using multiple threads or processes to efficiently gather data from the internet. This approach scales crawler operations, reducing indexing time and improving performance by distributing the workload across machines or cores. |
| What are meta tags? |
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| Meta tags are HTML snippets providing metadata about a webpage, including title, description, keywords, and author. They aren't visible on the page but influence search engine indexing and help improve a page's visibility in search results. |
| What is robots.txt? |
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| Robots.txt is a text file on a website that tells web crawlers which pages or files they are allowed to access. It's used to communicate with search engine crawlers and other automated web tools, directing them on what content should or should not be indexed. This file can help control how a website's content appears in search engine results and manage crawling traffic to optimize server resources. |
| What is the purpose of web indexing? |
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| Web indexing is the process of collecting, analyzing, and storing information from web pages to create searchable databases. Search engines use web indexing to organize and rank web pages based on their relevance to user queries. This process involves crawling web pages, extracting content, and creating an index that enables quick retrieval of relevant results when users search for specific terms or topics. |
| What is an advantage of web indexing? |
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| An advantage of web indexing is that it enables quick and efficient retrieval of relevant information from the vast amount of content available on the web. This helps users find what they're looking for more easily, improving the overall usability and effectiveness of search engines. |
| What is a disadvantage of web indexing? |
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| A disadvantage of web indexing is that it can sometimes lead to outdated or irrelevant information being presented in search results. Additionally, web indexing may not capture all content on the web, leading to gaps in search coverage. |
| When is web indexing used? |
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| Web indexing is used constantly by search engines to organize and make sense of the vast amount of content available on the internet. Whenever someone performs a search query, the search engine consults its indexed database to quickly retrieve relevant results. |