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Questions - minhash

Generate sparse vector for all the column values in spark dataframe

column1 column2 1 1 1 0 1 0 0 0 Now I want to calculate the hash or sparse vector of all the values in column1 and column2
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Tanmay Sinha

apache-spark

pyspark

apache-spark-mllib

minhash

Votes: 0

Answers: 1

Latest Answer

You can use VectorAssembler. It creates SparseVector by default.
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pltc

Optimal way for calculating Weighted Jaccard index in Python

I have a dataset constructed as a sparse weighted matrix for which I want to calculate weighted Jaccard index for downstream grouping/clustering, with inspiration from below article: http://static.goo...
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Charmander_

python

numpy

distance

minhash

Votes: 0

Answers: 1

Latest Answer

You can use concatenate: q = np.concatenate([x,y], axis=1) np.sum(np.amin(q,axis=1))/np.sum(np.amax(q,axis=1)) %%timeit -r 10 -n 10 gives 131 µs ± 61.7 µs per loop (mean ± std. dev. of 10 runs, 10 lo...
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warped

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