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danielle sisserman


Last seen: 3 years 前 |  自 2020 起处于活动状态

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统计学

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call function for each combination of rows in A and columns in B
Xtrain = [1 2; 3 4; 5 6]; Xtest = [7 8 ; 9 10]; kernel = @(x1,x2) norm(x1 - x2); m = size(Xtrain, 1); n = size(Xte...

3 years 前 | 2 个回答 | 0

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function call returns "index (1.2): subscripts must be either integers 1 to (2^63)-1"
changed 2(1+y)/(4 + (1+y)^2); to 2*(1+y)/(4 + (1+y)^2); and it works.

3 years 前 | 0

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提问


function call returns "index (1.2): subscripts must be either integers 1 to (2^63)-1"
I have the following function: u_1 = @(y) 2(1+y)/(4 + (1+y)^2); I call it: u_1(0.2) I get the following error: inde...

3 years 前 | 2 个回答 | 0

2

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Creating vector and matrix from vector
function w = svm(Xtrain, Ytrain) first, I want to create the following vector: data = [Xtrain(1)*Ytrain(1) Xtrain(2)*Yt...

3 years 前 | 1 个回答 | 0

1

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two functions with descriptions in one graph
for this code: % approximating f plot(X_in.', U.'); xlabel('x'); ylabel('approximate f(x)'); legend_strs = compose('App...

3 years 前 | 1 个回答 | 0

1

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提问


construction of diagonal matrix of functions
I have three functions: f_1, f_2, and f_3. I want to construct the matrix A for the following linear system: so the fi...

3 years 前 | 2 个回答 | 0

2

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ploting a 2D graph with multiple lines
Hi, I'm a bigginer and what I need is too specific. I need to plot a graph that looks exaclty like this: I have a h vector...

3 years 前 | 1 个回答 | 0

1

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提问


optimize my matrix function
this is my code: t=1; for j=k_indices knn_labels(t,1) = classifier.Ytrain(j,1); t ...

3 years 前 | 1 个回答 | 0

1

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size() function returns wrong size
i have the following line of code: s = size(k_distances) k_distances is a 1x1 matrix: but the size function returns a s...

3 years 前 | 1 个回答 | 0

1

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Undefined function or variable
I am getting the following error: this is the function call: k_distances,k_indices = findKNN(classifier,Xtest(i:1,:...

3 years 前 | 1 个回答 | 0

1

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提问


Not enough input arguments.
I am trying to create a mX1 matrix that is initialized with zeros. this is what I'm doing: predictions = zeros((size(Xtest,1...

3 years 前 | 1 个回答 | 0

1

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Not enough input arguments.
Hi, I am very new to matlab and need some basic help. function classifier = learnknn(k, d, m, Xtrain, Ytrain) classifier ...

4 years 前 | 0 个回答 | 0

0

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