پاورپوینت Introduction to Neural Networks

نوع فایل: پاورپوینت

قابل ویرایش 19 اسلاید

Why ANN

Some tasks can be done easily (effortlessly) by humans but are hard by conventional paradigms on Von Neumann machine with algorithmic approach

Pattern recognition (old friends, hand-written characters)

Content addressable recall

Approximate, common sense reasoning (driving, playing piano, baseball player)

These tasks are often ill-defined, experience based, hard to apply logic

Von Neumann machine

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One or a few high speed (ns) processors with considerable computing power

One or a few shared high speed buses for communication

Sequential memory access by address

Problem-solving knowledge is separated from the computing component

Hard to be adaptive

Human Brain   

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Large # (10¹¹) of low speed processors (ms) with limited computing power

Large # (10¹⁵) of low speed connections

Content addressable recall (CAM)

Problem-solving knowledge resides in the connectivity of neurons

Adaptation by changing the connectivity