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"""
A weighted version of categorical_crossentropy for keras (2.0.6). This lets you apply a weight to unbalanced classes.
@url: https://gist.github.com/wassname/ce364fddfc8a025bfab4348cf5de852d
@author: wassname
"""
from keras import backend as K
def weighted_categorical_crossentropy(weights):
    """
    A weighted version of keras.objectives.categorical_crossentropy
    

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# Source: https://stackoverflow.com/a/518232/4102479
# This is better approach, compared to unidecode, though unidecode provide acceptable result in almost every cases
import unicodedata
import string

all_letters = string.ascii_letters + " .,;'"
nb_letter = len(all_letters)

print(all_letters, len(all_letters))

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from google.colab import drive
drive.mount('/content/drive')

!rm *.json
from google.colab import files
files.upload() # upload kaggle.json

!pip install kaggle

!mkdir -p ~/.kaggle

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#!/usr/bin/env python
# coding: utf-8
""" This work is licensed under a Creative Commons Attribution 3.0 Unported License.
    Frank Zalkow, 2012-2013 """

# Source: http://www.frank-zalkow.de/en/code-snippets/create-audio-spectrograms-with-python.html?ckattempt=1&i=1

import numpy as np
from matplotlib import pyplot as plt
import scipy.io.wavfile as wav

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# This function is used to reduce memory of a pandas dataframe
# The idea is cast the numeric type to another more memory-effective type
# For ex: Features "age" should only need type='np.int8'
# Source: https://www.kaggle.com/gemartin/load-data-reduce-memory-usage
def reduce_mem_usage(df):
    """ iterate through all the columns of a dataframe and modify the data type
        to reduce memory usage.        
    """
    start_mem = df.memory_usage().sum() / 1024**2
    print('Memory usage of dataframe is {:.2f} MB'.format(start_mem))

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# copy a list of file (from file_id_list) from src to dest
cat file_id_list | awk '{system("cp " $1 " <dest_dir")}'

# total time of audio file within a directory
soxi -D *.wav | awk '{sum+=$1} END {print sum}'

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nnoremap <S-Left> :action EditorLeftWithSelection<CR>
nnoremap <S-Right> :action EditorRightWithSelection<CR>
nnoremap <S-Up> :action EditorUpWithSelection<CR>
nnoremap <S-Down> :action EditorDownWithSelection<CR>

inoremap <S-Left> <C-O>:action EditorLeftWithSelection<CR>
inoremap <S-Right> <C-O>:action EditorRightWithSelection<CR>
inoremap <S-Up> <C-O>:action EditorUpWithSelection<CR>
inoremap <S-Down> <C-O>:action EditorDownWithSelection<CR>

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 #WINE with error (OLE error 80040154)

wget http://winetricks.org/winetricks 

chmod +x winetricks

winetricks -v vcrun6 winetricks -v msxml4

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from __future__ import division
from numpy.fft import rfft
from numpy import argmax, mean, diff, log, nonzero
from scipy.signal import blackmanharris, correlate
from time import time
import sys
try:
    import soundfile as sf
except ImportError:
    from scikits.audiolab import flacread

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/*
  Copyright @ nguyenvanhieu.vn
  Thằng code java này vẫn giữ được lower/upper case
  Code này ngon hơn, check đúng trường hợp cần thêm dấu thì mới thêm
  Tuy nhiên code python ở dưới không check nhưng vẫn chưa thấy bugs nào hết :v
*/
package utils;

import java.util.*;