associative memory


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associative memory

[ə′sō·sē‚ād·iv ′mem·rē]
(computer science)
A data-storage device in which a location is identified by its informational content rather than by names, addresses, or relative positions, and from which the data may be retrieved. Also known as associative storage.
(psychology)
Recalling a previously experienced item by thinking of something that is linked with it, thus invoking the association.

Associative Memory

 

a storage unit of digital computers in which selection (entry) is performed not according to concrete address but rather according to a preset combination (association) of attributes characteristic of the desired information. Such attributes can be part of a word (number), attached to it for detection among other words, certain features of the word itself (for example, the presence of specific codes in its digits), the absolute value of a word, its presence in a preset range, and so on.

The operation of an associative memory is based on the representation of all information in the form of a sequence of zones according to properties and characteristic attributes. In this case the retrieval of information is reduced to the determination of the zone according to the preset attributes by means of scanning and comparison of those attributes with the attributes that are stored in the associative memory. There are two basic methods of realizing the associative memory. The first is the construction of a memory with storage cells that have the capability of performing simultaneously the functions of storage, nondestructive reading, and comparison. Such a method of realizing an associative memory is called network parallel-associative—that is, the required sets of attributes are preserved in all the memory cells, and the information that possesses a given set of attributes is searched for simultaneously and independently over the entire storage capacity. Card indexes for edge-punched cards are prototypes of such an associative memory. Thin-film kryotrons, transfluxors, biaxes, magnetic thin films, and so on are used as storage elements of network-realized associative memories.

The second method of realizing an associative memory is the programmed organization (modeling) of the memory. It consists of the establishment of associative connections between the information contained in the memory by means of ordered arrangement of the information in the form of sequential chains or groups (lists) connected by linkage addresses whose codes are stored in the same memory cells. This procedure is the more suitable for practical realization in dealing with large volumes of information because it provides for the use of conventional accumulators with address reference.

The use of an associative memory considerably facilitates the programming and solution of informational-logical problems and accelerates by hundreds (thousands) of times the speed of retrieval, analysis, classification, and processing of data.

V. P. ISAEV

associative memory

References in periodicals archive ?
This program is designed for institutions whose ambition is to lead the pack on innovation in financial services by taking advantage of the latest advancements in associative memory artificial intelligence.
Among the words in English vocabulary, as long as the meaningful semantic relations are established, a word will help learners associate a series of related vocabulary to achieve associative memory.
STAMN is an incremental, possibly looping, nonfully connected, asymmetric associative memory network.
A study of the cognitive and brain mechanisms underlying this deficit, through testing of associative memory performance and processing in study participants during structural magnetic resonance imaging (MRI) scanning, have found that impaired learning abilities are predominantly associated with cerebellar brain volumes.
2009) proposed that adult neurogenesis facilitates the transfer of associative memory from the hippocampus to the cerebral cortex in rodents.
Praveen, "Complex-Valued Neural Associative Memory on the Complex Hypercube, "Proceedings of 2004 IEEE International Conference on Cybernetics and Intelligent Systems (CIS-2004), Singapore.
The first bidirectional associative memory (BAM), introduced by Kosko [1], was the base of many models presented later.
In chapter five, "Woolf, Joyce and Faulkner: Associative Memory," Nalbantian provides some interesting, if abbreviated, readings of To the Lighthouse and Mrs.
In particular, the CA3 region of the hippocampus has been implicated in associative memory recall and rapid memory acquisition.
Among the newer technologies are associative memory models.
0 are an Associative Memory API for memory management and Time Code conversion support for common frame representations such as microseconds, frames, NTSC, and non-drop.
The use of the term here follows from Dawkins' (1982) revised conception of the term he coined that is consistent with Semon's (1921) 'mneme' to describe received ideas stored in memory, Blum's (1963) 'mnemotype' as internally stored information, and Young's (1978) and Minsky's (1986) notions of 'mnemon' and 'neme' as basic units of associative memory.

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