How to calculate the distance between matrixes

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fathi
fathi 2017-4-24
编辑： Jan 2017-4-24
Is it possible to determine the Euclidean distance between two matrices with different lengths?
%//// Ex:
I1 = [4, 3, 5, 2, 4]
I2 = [4, 3, 6]
The length of I1 is 5, but the length of I2 is 3. So is it possible to calculate the Euclidean distance??
Thank you
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Andrew Newell
Andrew Newell 2017-4-24
A Euclidean distance is between two points in the same space. Here we have points in a five-dimensional space and a three-dimensional space. To make the idea of Euclidean distance meaningful, you'd have to do something like add two zeros to I2.

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回答（1 个）

Jan
Jan 2017-4-24
编辑：Jan 2017-4-24
No. The Euclidean distance requires vectors with the same number of elements.
You can define a new distance, which fills elements with zeros (but then decide, if the vector is padded on the left or the right).
Perhaps you want something like FEX: distance2curve or the Levenshtein distance between words.
What is the wanted output for the shown 2 vectors?

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