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Negative sign of weight indicates?

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Negative sign of weight indicates?

(a) excitatory input

(b) inhibitory input

(c) excitatory output

(d) inhibitory output

This question was addressed to me during a job interview.

This intriguing question comes from Terminology in portion Basics of Artificial Neural Networks of Neural Networks

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Best answer
The correct option is (b) inhibitory input

Easiest explanation: Sign convention of neuron.

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