PROFILE SIMILARITY
Beginner
Difficulty: Easy Tags: Linear Algebra
Story
LinkedIn's "People You May Know" starts as raw cosine similarity between two profile embedding vectors before any graph signal is layered on top.
The Math
cos(u, v) = (u . v) / (||u|| * ||v||)
Input Format
d
u_1 ... u_d
v_1 ... v_d
Output Format
Scalar similarity, 6 decimals.
Constraints
1 <= d <= 10^4- Time limit: 1.0 second.
Example
Input
4
1 2 0 1
2 0 1 1
Output
0.500000
Keywords
linear-algebra
Python
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