Survey on Web Content Mining and Its Tools

The task of searching, downloading, filtering related document is said to be web content mining. It is the discovery of useful information from the web content, including text, images, audio, video, etc,. Web content mining becomes complicated when it has to mine structured, semi-structured and unstructured and multimedia data. Unstructured Data Mining Techniques are Information Extraction, Topic Tracking, Summarization, Categorization, Clustering, and Information Visualization. Structured Data Mining Techniques are Web Crawler, Wrapper Generation, Page Content Mining. Semi-Structured Data Mining Techniques are Object Exchange Model (OEM), Top down Extraction, Web Data Extraction Language.