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When a search engine visits a site, the robots.txt located in the root directory is the first file crawled. The robots.txt file is then parsed and will instruct the robot as to which pages are not to be crawled. As a search engine crawler may keep a cached copy of this file, it may on occasion crawl pages a webmaster does not wish to crawl.
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.
Search analytics. Search analytics is the use of search data to investigate particular interactions among Web searchers, the search engine, or the content during searching episodes. [ 1] The resulting analysis and aggregation of search engine statistics can be used in search engine marketing (SEM) and search engine optimization (SEO). In other ...
Keyword research. The objective of keyword research is to generate, with good precision and recall, a large number of terms that are highly relevant yet non-obvious to the given input keyword. [ 1] The process of keyword research involves brainstorming and the use of keyword research tools, with popular ones including Semrush and Google Trends.
The other big five have similar offers. ScienceDirect also competes for audience with other large aggregators and hosts of scholarly communication content such as academic social network ResearchGate and open access repository arXiv, as well as with fully open access publishing venues and mega journals like PLOS . ScienceDirect also carries Cell .
Windows. IDOL Enterprise Desktop Search, HP Autonomy Universal Search. [ 5] Proprietary, commercial. Beagle. Linux. Open-source desktop search tool for Linux based on Lucene. Unmaintained since 2009. A mix of the X11/MIT License and the Apache License.
Search engine marketing ( SEM) is a form of Internet marketing that involves the promotion of websites by increasing their visibility in search engine results pages (SERPs) primarily through paid advertising. [ 1] SEM may incorporate search engine optimization (SEO), which adjusts or rewrites website content and site architecture to achieve a ...
Google Scholar is a freely accessible web search engine that indexes the full text or metadata of scholarly literature across an array of publishing formats and disciplines. . Released in beta in November 2004, the Google Scholar index includes peer-reviewed online academic journals and books, conference papers, theses and dissertations, preprints, abstracts, technical reports, and other ...