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  2. Form I-94 - Wikipedia

    en.wikipedia.org/wiki/Form_I-94

    Form I-94, the Arrival-Departure Record Card, is a form used by U.S. Customs and Border Protection (CBP) intended to keep track of the arrival and departure to/from the United States of people who are not United States citizens or lawful permanent residents (with the exception of those who are entering using the Visa Waiver Program or Compact of Free Association, using Border Crossing Cards ...

  3. Postings list - Wikipedia

    en.wikipedia.org/wiki/Postings_list

    At the bare minimum, a postings list is associated with a term from a document and records the places where that term appears. Each term found in documents within a corpus is mapped to a corresponding postings list containing information such as the documents the term appears in and often the positions within those documents. [1]

  4. Content-addressable storage - Wikipedia

    en.wikipedia.org/wiki/Content-addressable_storage

    This provides several benefits. For one, when a file is sent to the CAS for storage, the hash function will produce a key and then check to see if that key already exists in the directory. If it does, the file is not stored as the one already in storage is identical. This allows CAS systems to easily avoid duplicate data.

  5. Information retrieval - Wikipedia

    en.wikipedia.org/wiki/Information_retrieval

    Information retrieval (IR) in computing and information science is the task of identifying and retrieving information system resources that are relevant to an information need. The information need can be specified in the form of a search query. In the case of document retrieval, queries can be based on full-text or other

  6. Evaluation measures (information retrieval) - Wikipedia

    en.wikipedia.org/wiki/Evaluation_measures...

    Cleverdon developed a test called ‘known-item searching’ - to check whether an IR system returned the documents that were known to be relevant or correct for a given search. Cleverdon’s experiments established a number of key aspects required for IR evaluation: a test collection, a set of queries and a set of pre-determined relevant items ...

  7. Inverted index - Wikipedia

    en.wikipedia.org/wiki/Inverted_index

    In computer science, an inverted index (also referred to as a postings list, postings file, or inverted file) is a database index storing a mapping from content, such as words or numbers, to its locations in a table, or in a document or a set of documents (named in contrast to a forward index, which maps from documents to content). [1]

  8. Find missing emails in AOL Mail

    help.aol.com/articles/find-missing-emails-in-aol...

    If you find any unexpected filters, check to see if your account may have been compromised. Search for them - Locate misplaced emails using our basic or advanced search options. Spam and Trash - These folders don't show in search results. Check them manually.

  9. Ranking (information retrieval) - Wikipedia

    en.wikipedia.org/.../Ranking_(information_retrieval)

    Ranking of query is one of the fundamental problems in information retrieval (IR), [1] the scientific/engineering discipline behind search engines. [2] Given a query q and a collection D of documents that match the query, the problem is to rank, that is, sort, the documents in D according to some criterion so that the "best" results appear early in the result list displayed to the user.