Fuzzy associative memory

Fuzzy associative memory

Research on fuzzy associative memory (FAM) models originated in the early 1990's with the advent of Kosko's FAM1,2. Like many other associative memory models, Kosko's FAM consists of a single-layer feed-forward fuzzy neural network that stores fuzzy rules "If x is X_k then y is Y_k " by means of a fuzzy associative matrix.

Despite successful applications of Kosko's FAMs to problems such as backing up a truck and trailer, target tracking, and voice cell control in ATM networks, Kosko's FAM suffers from an extremely low storage capacity of one rule per FAM matrix. Therefore, Kosko's overall fuzzy system comprises several FAM matrices. Given a fuzzy input, the FAM matrices generate fuzzy outputs which are then combined to yield the final result.

To overcome the original FAMs severe limitations in storage capacity, several researchers have developed improved FAM versions that are capable of storing multiple pairs of fuzzy patterns. For example, Chung and Lee generalized Kosko's model by proposing a max-t composition for the synthesis of a FAM matrix3. Chung and Lee showed that all fuzzy rules can be perfectly recalled by means of a single FAM matrix using max-t composition provided that the input patterns satisfy certain orthogonality conditions. Junbo et al. had previously presented an improved learning algorithm for Kosko's max-min FAM model4. Liu modified the Junbo's FAM et al. by adding a threshold activation function to each node of the network5. Sussner and Valle recently established implicative fuzzy associative memories (IFAMs)6,7, a class of associative memories that grew out of morphological associative memories (MAMs)8. Interestingly, one can store as many patterns as desired in an auto-associative IFAM. Furthermore, one particular IFAM model can be viewed as an improved version of Liu's FAM.


1. S.-G. Kong and B. Kosko, Adaptive fuzzy systems for backing up a truck-and-trailer. IEEE Transactions on Neural Networks 3, 2 (Mar. 1992), 211–223.

2. B. Kosko, Neural Networks and Fuzzy Systems: A Dynamical Systems Approach to Machine Intelligence. Prentice Hall, Englewood Cliffs, N.J., 1992.

3. F. Chung and T. Lee, On fuzzy associative memory with multiple-rule storage capacity. IEEE Transactions on Fuzzy Systems 4, 3 (August 1996), 375–384.

4. F. Junbo, J. Fan, and S. Yan, A learning rule for fuzzy associative memories. In Proceedings of the IEEE International Joint Conference on Neural Networks (June 1994), vol. 7, pp. 4273 – 4277.

5. P. Liu, The fuzzy associative memory of max-min fuzzy neural networks with threshold. Fuzzy Sets and Systems 107 (1999), 147–157.

6. P. Sussner and M.E. Valle, Implicative fuzzy associative memories. IEEE Transactions on Fuzzy Systems 14, 6 (2006), 793–807.

7. M.E. Valle, P. Sussner, and F. Gomide, Introduction to implicative fuzzy associative memories. In Proceedings of the IEEE International Joint Conference on Neural Networks (Budapest, Hungary, July 2004), pp. 925 – 931.

8. G.X. Ritter, P. Sussner, and J.L.D. De Leon, Morphological associative memories. IEEE Transactions on Neural Networks 9, 2 (1998), 281–293.

Wikimedia Foundation. 2010.

Игры ⚽ Поможем решить контрольную работу

Look at other dictionaries:

  • memory — noun 1 ability to remember ADJECTIVE ▪ excellent, good, long, prodigious, retentive ▪ awful, bad, faulty, poor …   Collocations dictionary

  • Semantic memory — refers to the memory of meanings, understandings, and other concept based knowledge unrelated to specific experiences. The conscious recollection of factual information and general knowledge about the world,cite web… …   Wikipedia

  • FAM — or Fam can mean:* FAM (gang) * the Foreign Affairs Manual of the U.S. Department of State * file alteration monitor * Fat acceptance movement * fuzzy associative matrix * fuzzy associative memory * Free Aceh Movement * Fertility Awareness Method… …   Wikipedia

  • FAM — 5 fluorouracil, Adriamycin, and mitomycin C; fuzzy associative memory * * * fam abbr family …   Medical dictionary

  • FAM — • 5 fluorouracil, Adriamycin, and mitomycin C; • fuzzy associative memory …   Dictionary of medical acronyms & abbreviations

  • AND Corporation — was incorporated in 1992. AND Corporation developed Holographic Neural Technology (HNeT) [Sutherland J.G. (1990) Holographic Model of Memory, Learning, and Expression in International Journal of Neural Systems Vol. 1 3. pp. 256 267.] [Sutherland… …   Wikipedia

  • Memristor — Type Passive Working principle Memristance Invented Leon Chua (1971) First production HP Labs (2008) Electronic symbol …   Wikipedia

  • Bart Kosko — Infobox Writer imagesize = 300px name = Bart Kosko caption = pseudonym = birthname = birthdate = birth date |1960|02|07 birthplace = Kansas City, Kansas deathdate = deathplace = occupation = Writer and Professor of Electrical Engineering… …   Wikipedia

  • Memoria semántica — El término memoria semántica hace referencia a la memoria de significados, entendimientos y otros conocimientos conceptuales que no están relacionados con experiencias concretas. Se considera que la recolección consciente de información sobre… …   Wikipedia Español

  • Artificial Neural Network — Réseau de neurones Pour les articles homonymes, voir Réseau. Vue simplifiée d un réseau artificiel de neurones Un réseau de neurones artificiel est un modèle de c …   Wikipédia en Français

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”