Preliminary experimental results shows a retrieval precision of 80% for web pages related to any nuclear theme and a retrieval precision of 72% for web pages related only to nuclear power theme. We designed a web-based nuclear-oriented expert system guided by a web crawler algorithm and a neural network able to search and retrieve nuclear-related hyper textual web information in autonomous and massive fashion. In this paper we present preliminary research on web search and crawling algorithm applied specifically to nuclear-related web information.
International Nuclear Information System (INIS) Nuclear expert web search and crawler algorithm This paper, Deep iCrawl, gives a novel and vision-based app. The structure of the deep web pages makes it impossible for traditional web crawlers to access deep web contents. Deep web pages are created dynamically as a result of queries posed to specific web databases.
Traditional web crawlers focus only on the surface web while the deep web keeps expanding behind the scene. The explosive growth of World Wide Web has posed a challenging problem in extracting relevant data. R.Anita V.Ganga Bharani N.Nityanandam Pradeep Kumar Sahoo The results show that distributed crawler system based on Scrapy framework is more efficient and stable than the single-machine web crawler system.ĭeep iCrawl: An Intelligent Vision-Based Deep Web Crawler
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The movie information captured from douban is stored in MongoDB, so that the data can be processed and analyzed. In this paper, Through the study and research of the original Scrapy framework, the original Scrapy framework is improved by combining Scrapy and Redis, a distributed crawler system based on Web information Scrapy framework is designed and implemented, and Bloom Filter algorithm is applied to dupefilter modul to reduce memory consumption. Design and Implementation of Distributed Crawler System Based on ScrapyĪt present, some large-scale search engines at home and abroad only provide users with non-custom search services, and a single-machine web crawler cannot sovle the difficult task.
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