Neurastenia y la neurosis de angustia, La by Freud Sigmund

By Freud Sigmund

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A) What are the lengths of the two vectors and what is the value of the angle between them? (b) What is the Euclidean distance between them? 13 Network for Question 1 < previous page  < previous page Page 134 page_133 next page > page_134 next page > SELF-TEST ANSWERS 1. With these input values, the outputs of the three neurons are, from the top: Therefore the middle neuron wins the competition, so that the values for y are: 2. 4 in the second and 0010 in the third. (b) The outstar layer would have four neurons in order to produce 4-bit output patterns.

114. Continuing like this, the values of a 2 and b get progressively larger and the value of u approaches 1. Initially, an S-cell is chosen arbitrarily to be the pattern detector. When its weights are adjusted it becomes the cell that produces the maximum response, and so adjusts its weights to reinforce the response. In this way, the various cells become tuned to small primitive features. CHAPTER SUMMARY This chapter has discussed a number of self-organising systems. Â Â The neuron with the largest response becomes the only active neuron by the application of some winner takes all mechanism, and its weights are adjusted so that its response is increased.

4 in the second and 0010 in the third. (b) The outstar layer would have four neurons in order to produce 4-bit output patterns. The weights would be 110, 010, 011 and 010. 5 and 1 in the three neurons in the instar layer. The winner takes all mechanism would select neuron 2 as the closets and would therefore give it an output of 1 and all other neurons an output of 0. When this is fed to the outstar layer it produces an output of 1111, which represents the nearest stored pattern 35 36 (d) The pattern 1111 is fed back to the input, where it is compared with the input and the AND of the two patterns found.

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