How to implement Bag of words feature hashing in python?

I'm trying to classify a few thousand documents, with a few lines each. I've used regular bag of words before, but want to use the hashing trick this time, and I'm having trouble understanding...

Building the mmh3 package from source

I am essentially inexperienced with building python libraries from source, but it seems as though 'mmh3' is not available in binary form. I'm attempting to build a simple Bloom filter and mmh3 is...

Implementing ensureIndex() to delete duplicate documents with pymongo

I need to delete the duplicate entries based on unique values of field "X". It works fine in mongodb shell: db.collection.ensureIndex({x' : 1},{unique: true, dropDups: true}) I want to run this...

mmh3 not installed on Elastic MapReduce in AWS

I need to use mmh3 for hashing. However, when I run "python MultiwayJoin.py R.csv S.csv T.csv -r emr > output.txt" in terminal, it returned an error said that: File "MultiwayJoin.py", line 5, in...

Murmur3 hash different result between Python and Java implementation

I have two different program that wish to hash same string using Murmur3 in Python and Java respectively. Python version 2.7.9: mmh3.hash128('abc') Gives...

Python: Python.h file missing

I am using Ubuntu 16.04. I am trying to install Murmurhash python library but it is throwing error: command 'x86_64-linux-gnu-gcc' failed with exit status 1 . I looked on Internet and it is says...

Scala MurmurHash3 library not matching Python mmh3 library

I have a need to MurmurHash strings in both Python and Scala. However they are giving very different results. Scala's builtin MurmurHash3 library does not seem to give the same results as any of...

Order-invariant hash in Python

In Python, I would like to quickly compute an order-invariant hash for the lines of a file as a way to identify "uniquely" its content. These files are for example the output of a select ... from...

virtual environment not importing packages from virtual environment site-packages in Python 3.6.4

I created a virtual environment (venv64) for python 3.6.4. and installed ujson. It is installed in virtual environment site-packages. But, when I am trying to import ujson in virtual env. It gives...

Python mmh3: UnicodeEncodeError: 'ascii' codec can't encode characters in position 0-14: ordinal not in range(128)

I'm querying a DB for jokes and am getting back Python strs. I want to use them as Unicode objects, so I do: joke = unicode(joke, 'utf-8') This works for all my DB results and does not cause...

Trying to install anything with pip on macos and cannot

I think I have a problem with my mac os system. Everything I try to install on it using pip I get the same errors over and over again, I have pasted just the lines that display an error to not...

get murmur hash of a file with Python 3

The documentation for the python library Murmur is a bit sparse. I have been trying to adapt the code from this answer: import hashlib from functools import partial def md5sum(filename): with...

MurmurHash3 - Java and Python return different results on long input

I'm using a Java version of MurMurHash3 developed by Google (google.common.hash.HashFunction and google.common.hash.Hashing) to create n independent hash functions (using n different seeds) to...

Installing mmh3 package with pip on conda/MacOS

So I'm trying to setup and install again a package that requires mmh3 on MacOS. When I get there - I am getting errors that for all intents and purposes might as well be in a different language...

Import h2o4gpu in python fails due to "there is no module named h2o4gpu.utils.murmurhash3_32"

My working Environment OS platform, distribution and version: Window 10 Education 64 bit(10.0, Build 17134**: Installed from (source or binary): from source (pip install -i...

ufunc 'bitwise_and' not supported for the input types Minhash

I am using Python 3.7.1 for making minhash a list of string. The code is as follows. import mmh3 import random import string import itertools from datasketch import MinHash def...

Can't install mmh3 for Python3.7.1 on Win10x64 - visual C++ build tools aren't recognized

I'm trying to install mmh3 (with some other libs) on Python - other libs are installing OK, but mmh3 rises an error: ERROR: Complete output from command 'c:\python37\python.exe' -u -c 'import...

Murmurhash of different language version get different result

I've tried three version of murmurhash in java(jedis and guava), go and python. The result of java(guava),go and python version output same hash code but different with java(jedis). All the...

Is it possible to reverse a MurmurHash in Python with mmh3?

Here's an example of a murmer hash: >>> import mmh3 >>> seq = "AGTCGCTGA" >>> seq_hash = mmh3.hash64(seq, seed=0, signed=False) >>> seq_hash (12042475613054376161, 7271345330980536087) My main...

Issues trying to use mmh3 in jupiter notebook

I'm trying to use import and use mmh3 for hashing however I get errors when I try to do so. These are the error i get: Collecting mmh3 Using cached mmh3-2.5.1.tar.gz (9.8 kB) Building wheels...

How do I hash integers and strings inputs using murmurhash3

I'm looking to get a hash value for string and integer inputs. Using murmurhash3, I'm able to do it for strings but not integers: pip install murmurhash3 import mmh3 mmh3.hash(34) Returns the...

python.h missing on Ubuntu 18 with python-dev installed

Trying to get fHDHR working Ubuntu 18. During the install I get this error: include/python3.8 -c src/gevent/libev/corecext.c -o build/temp.linux-x86_64-3.8/src/gevent/libev/corecext.o ...