I have two complex vectors, let's say a and b. How to compute cosine similarity between a and b using MATLAB?
Hi Muhammad Karam Shehzad,
You can use this link as reference (https://stackoverflow.com/questions/57187941/how-to-calculate-cosine-similarity-between-two-frequency-vectors-in-matlab)
Best Regards
Dear Muhammad,
getCosineSimilarity function is used to calculate the COSINE SIMILARITY between two complex vectors using MATLAB.
You may refer to the following link
https://in.mathworks.com/matlabcentral/fileexchange/62978-getcosinesimilarity-x-y
The ‘x’ vector has values, x=[1,2,3] The ‘y’ vector has values, y=[1,5,3]
The formula for calculating the cosine similarity is : Cos(x, y) = x . y / ||x|| * ||y||
Try the code (below) in the MATLAB
x=[1,2,3]
y=[1,5,3]
pdist2(x,y,'cosine')
Sanjay Gaur , thank you for your answer. Your MATLAB code will return angle, i.e., theta. Complete code is given below.
x=[1,2,3];
y=[1,5,3];
theta=pdist2(x,y,'cosine');
COSINE SIMILARITY = cos(theta);
----
For example, if x=[1,2,3]; y=[1,2,3];
then,
theta= 0
COSINE SIMILARITY= 1
COSINE SIMILARITY = 1 means that two vectors are exactly same.
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