ACODF: a novel data clustering approach for data mining in large databases
Journal of Systems and Software - Special issue: Performance modeling and analysis of computer systems and networks
WSEAS Transactions on Computers
GCCB'06 Proceedings of the 2006 international conference on Distributed, high-performance and grid computing in computational biology
Future Generation Computer Systems
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The self-organizing map is a prominent unsupervised neural network model which lends itself to the analysis of high-dimensional input data and data mining applications. However, the high execution times required to train the map limit its application in many high-performance data analysis application domains. We discuss the /sub par/SOM implementation, a software-based parallel implementation of the self-organizing map, and its optimization for the analysis of high-dimensional input data using distributed memory systems and clusters. The original /sub par/SOM algorithm scales very well in a parallel execution environment with low communication latencies and exploits parallelism to cope with memory latencies. However it suffers from poor scalability on distributed memory computers. We present optimizations to further decouple the subprocesses, simplify the communication model and improve the portability of the system.