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pythonlisttuplessimilarity
LoniF
LoniF

Reputation: 105

Check similarity between elements in tuple Python

I have the following list:

list= [(12.947999999999979,5804),(100000.0,1516),(12.948000000000008,844),(12.948000000000036,172),(18.252000000000066,92)]

The first element in the tuple represents the value whereas the second element of the tuple represents the frequency that this value appears in a document. My question is how can I cluster the similar elements of the list (such as the 1st element and the 3rd element of the list) and combine their frequencies?

Upvotes: 1

Views: 631

Answers (1)

Adirio
Adirio

Reputation: 5286

Use a Counter element and round() to the number of decimals you want. By the way do NOT use the reserved word list:

from collections import Counter

l= [(12.947999999999979,5804),(100000.0,1516),(12.948000000000008,844),(12.948000000000036,172),(18.252000000000066,92)]
precision = 3

c = Counter()

for value, times in l:
    c.update([round(value, precision)]*times)

If you already have the data in a counter you could do this directly:

from collections import Counter

# data = Counter()  # This is the counter where you have the data
precision = 3

joined = Counter()

for value, times in data.items():
    joined.update([round(value, precision)]*times)

data = joined

Upvotes: 2

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