Graphics Hardware Implementation of the Parameter-Less Self Organising Map

This paper presents a highly parallel implementation of a\ud new type of Self-Organising Map (SOM) using graphics hardware. The\ud Parameter-Less SOM smoothly adapts to new data while preserving the\ud mapping formed by previous data. It is therefore in principle highly\ud suited for interactive use, however for large data sets the computational\ud requirements are prohibitive. This paper will present an implementation\ud on commodity graphics hardware which uses two forms of parallelism\ud to signi¯cantly reduce this barrier. The performance is analysed experi-\ud mentally and algorithmically. An advantage to using graphics hardware\ud is that visualisation is essentially free", thus increasing its suitability\ud for interactive exploration of large data sets