enow.com Web Search

Search results

  1. Results from the WOW.Com Content Network
  2. Rocchio algorithm - Wikipedia

    en.wikipedia.org/wiki/Rocchio_algorithm

    The Rocchio algorithm is based on a method of relevance feedback found in information retrieval systems which stemmed from the SMART Information Retrieval System developed between 1960 and 1964. Like many other retrieval systems, the Rocchio algorithm was developed using the vector space model .

  3. Relevance feedback - Wikipedia

    en.wikipedia.org/wiki/Relevance_feedback

    Relevance feedback is a feature of some information retrieval systems. The idea behind relevance feedback is to take the results that are initially returned from a given query, to gather user feedback, and to use information about whether or not those results are relevant to perform a new query. We can usefully distinguish between three types ...

  4. SMART Information Retrieval System - Wikipedia

    en.wikipedia.org/wiki/SMART_Information...

    Many important concepts in information retrieval were developed as part of research on the SMART system, including the vector space model, relevance feedback, and Rocchio classification. Gerard Salton led the group that developed SMART. Other contributors included Mike Lesk.

  5. Query expansion - Wikipedia

    en.wikipedia.org/wiki/Query_expansion

    This is the so called pseudo-relevance feedback (PRF). [6] Pseudo-relevance feedback is efficient in average but can damage results for some queries, [7] especially difficult ones since the top retrieved documents are probably non-relevant. Pseudo-relevant documents are used to find expansion candidate terms that co-occur with many query terms. [8]

  6. Nearest centroid classifier - Wikipedia

    en.wikipedia.org/wiki/Nearest_centroid_classifier

    Rocchio Classification. In machine learning, a nearest centroid classifier or nearest prototype classifier is a classification model that assigns to observations the label of the class of training samples whose mean is closest to the observation.

  7. Head of Ohio's teacher pension fund retires Sunday, saying ...

    www.aol.com/head-ohios-teacher-pension-fund...

    The outgoing head of Ohio's troubled teachers retirement system said that she is leaving the fund in strong fiscal condition, despite the turmoil at the top that her successor will inherit. In a ...

  8. Two flash bombs fired into garden of Netanyahu's home in ...

    www.aol.com/news/two-flash-bombs-fired-garden...

    CAIRO (Reuters) -Two flash bombs were fired towards Israeli Prime Minister Benjamin Netanyahu's home in the northern Israeli town of Caesarea on Saturday and fell into the garden, police said.

  9. Information retrieval - Wikipedia

    en.wikipedia.org/wiki/Information_retrieval

    Relevance (information retrieval) – Measure of a document's applicability to a given subject or search query; Relevance feedback – type of feedback; Rocchio classification – A classification model in machine learning based on centroids; Search engine indexing – Method for data management