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In this model information is accumulated on memory elements as products of component data. Denoting a key vector by q ^(p) , and the data associated with it by another vector x ^(p) , the pairs (q ^(p) , x ^(p) ) are memorized in the form of a matrix {see the Equation in PDF File} where c is a constant. A randomly selected subset of the elements of M xq can also be used for memorizing. The recalling of a particular datum x ^(r) is made by a transformation x ^(r) =M xq q ^(r) . This model is failure tolerant and facilitates associative search of information; these are properties that are usually assigned to holographic memories. Two classes of memories are discussed: a complete correlation matrix memory (CCMM), and randomly organized incomplete correlation matrix memories (ICMM). The data recalled from the latter are stochastic variables but the fidelity of recall is shown to have a deterministic limit if the number of memory elements grows without limits. A special case of correlation matrix memories is the auto-associative memory in which any part of the memorized information can be used as a key. The memories are selective with respect to accumulated data. The ICMM exhibits adaptive improvement under certain circumstances. 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Correlation Matrix Memories 论文

Correlation Matrix Memories · 相关文章