1. What does a neuron compute? A neuron computes an activation function followed by a linear function (z = Wx + b) A neuron computes a linear function (z = Wx + b) followed by an activation function A neuron computes a function g that scales the input x linearly (Wx + b) A neuron computes the mean of all features before applying the output to an activation function

1. What does a neuron compute? A neuron computes an activation function followed by a linear function (z = Wx + b) A neuron computes a linear function (z = Wx + b) followed by an activation function A neuron computes a function g that scales the input x linearly (Wx + b) A neuron computes the mean of all features before applying the output to an activation function

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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A computer system has four major functions: Give an example to demonstrate your point.
Pick one than one answer choice
Compute w1,w2 and b for the Mc Culloch Pitts neuron using the input and outputs given below?
We have a single-input neuron with a bias. The output needs to be -1 for inputs less than 2 and +1 for inputs greater than or equal to 2. You need to determine: 1. an appropriate transfer function. 2. bias. How to calculate this in MATLAB?
A perceptron has three inputs X₁, X₂, X3 and a bias input fixed to 1. It classifies using a threshold step function [h(z)= 1 if z>0; else 0] as its activation function. Initialize the corresponding weights as follows: w₁ = 0.7, W₂ = 0.2, W3 = 0.9. Let the learning rate be 0.2 and bias weight w. be -0.7. W₁ X1 W₂ X₂ 0 W3 WA X3 +1 Apply the perceptron learning rule with the above input and with desired output 0. What are the new weights after this update ? Note: The output 0 here is fixed and may or may not be the answer to the previous question.
P9.4 The operational amplifier-resistor neuron circuit from Figure P9.4(a) needs to be analyzed. Compute fo2 as a function of w₁, W₂, and w3, and of the bias T as indicated on the neuron symbol of Figure 9.4(b). Assume for computation purposes that the two neurons are equivalent. 600 W 30002 W 180002 9000 ww 12 k ww Www 18000 H 3 Xxz X4 =-4V X₁ X₂ Xy W₁ W₂ for (a) 12000 www for -f(x-7) W3 T -1 (b) Figure P9.4 High-gain neuron with weights and nonzero threshold: (a) circuit diagram and (b) symbol. (a) Draw the neuron's transfer characteristics as a function of z= Wix. (b) Determine the range of activation z that allows for the linear operation of the neuron. Assume fat-| = |fsat+= 14 V. (c) Assume that the neuron needs to classify patterns of two classes and find its responses due to the eight individual input values, which are vertices of a three-dimensional [-1,1] cube.
Which one to choose?
Priority inversion is a condition that occurs in real time systems – Analyzing on this statement.
1) design an artificial neural network with two inputs (X1 and X2). She won't have the bias. This network will have a hidden layer with two neurons (N1 and N2), plus an output layer, with one neuron (N3). The output of the network is called Y. Make the weights (W's) of each neuron explicit in the network, as well as the interconnections between all parts of the ANN.
Which one to choose?
A neuron with 3 inputs has the weight vector [0.3 -0.1 0.1]^T and a bias 0 = 0. If the input vector is X = [0.2 0.6 0.3]^T then the total input to the neuron is: