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What (who) is postings - definition

TYPE OF DATABASE INDEX

Full inverted index; Inverted file; Inverted files; Inverted file index; Inverted list; Inverse index; Postings file

inverted index

<database, information science> A sequence of (key, pointer) pairs where each pointer points to a record in a database which contains the key value in some particular field. The index is sorted on the key values to allow rapid searching for a particular key value, using e.g. binary search. The index is "inverted" in the sense that the key value is used to find the record rather than the other way round. For databases in which the records may be searched based on more than one field, multiple indices may be created that are sorted on those keys. An index may contain gaps to allow for new entries to be added in the correct sort order without always requiring the following entries to be shifted out of the way. (1995-02-08)

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). The purpose of an inverted index is to allow fast full-text searches, at a cost of increased processing when a document is added to the database.

https://en.wikipedia.org/wiki/Inverted_index

posted

a.

1.

Placed, situated.

2.

(Colloq., U.S.) Instructed, well-informed, posted up.

Wikipedia

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). The purpose of an inverted index is to allow fast full-text searches, at a cost of increased processing when a document is added to the database. The inverted file may be the database file itself, rather than its index. It is the most popular data structure used in document retrieval systems, used on a large scale for example in search engines. Additionally, several significant general-purpose mainframe-based database management systems have used inverted list architectures, including ADABAS, DATACOM/DB, and Model 204.

There are two main variants of inverted indexes: A record-level inverted index (or inverted file index or just inverted file) contains a list of references to documents for each word. A word-level inverted index (or full inverted index or inverted list) additionally contains the positions of each word within a document. The latter form offers more functionality (like phrase searches), but needs more processing power and space to be created.

https://en.wikipedia.org/wiki/Inverted index

Examples of use of postings

1. This includes letters, e–mails, Web site postings and blog postings among others types of information, according to the policy.

2. The postings prompted widespread outrage in Denmark.

3. Her postings can found at www.riverbendblog.blogspot.com.

4. He said incentives be given for such postings or they made compulsory to dispel the notion of postings in naxalite areas as punishment.

5. Many of the more recent postings have moved away from what Tim called "yellow" postings, using the color normally associated with sensationalist newspapers.