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ACHE is a focused spider web crawler. It collects spider web pages that satisfy around specific criteria, e.g., pages that belong to a given domain or that comprise a user-specified pattern. ACHE differs from generic crawlers inward feel that it uses page classifiers to distinguish betwixt relevant in addition to irrelevant pages inward a given domain. Influenza A virus subtype H5N1 page classifier tin ship away live from a elementary regular seem (that matches every page that contains a specific word, for example), to a machine-learning based classification model. ACHE tin ship away also automatically larn how to prioritize links inward social club to efficiently locate relevant content spell avoiding the retrieval of irrelevant content. ACHE supports many features, such as: Regular crawling of a fixed listing of spider web sites Discovery in addition to crawling of novel relevant spider web sites through automatic link prioritization Configuration of dissimilar types o...