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def smooth_noise(shp, dim=1, smoothing=30): | |
""" | |
Generate smoothed random noise that looks like a random walk. | |
- shp: shape of noise | |
- dim: dimension to smooth along | |
- smooth_steps: smoothing steps | |
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from torch import nn | |
import torch | |
import torch.nn.functional as F | |
import numpy as np | |
def radneg2radpos(f): | |
"""convert radians in range [-pi,pi] to [0,2*pi]""" | |
return np.where(f < 0, f + np.pi * 2, f) |
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import pandas as pd | |
import numpy as np | |
import hashlib | |
import json | |
def default(o): | |
"""Sets are unordered so are no good for hasing""" | |
if isinstance(o, set): | |
try: | |
o = sorted(o) |
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%pylab inline | |
import pandas as pd | |
import dask.dataframe as dd | |
def get_unbal_df(size = 100, balance=None): | |
"""Get a randomly unbalanced df""" | |
if balance is None: | |
balance = np.random.randint(-100, 100) | |
if balance<0: |
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from typing import Iterator, Collection | |
from fastai.data_block import CategoryListBase | |
from fastai.text import * | |
class BinaryProcessor(CategoryProcessor): | |
def create_classes(self, classes): | |
self.classes = classes | |
if classes is not None: self.c2i = {0:0, 1:1} | |
def generate_classes(self, items): |
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""" | |
Cache a torch dataset to npy files using dask | |
url:https://gist.github.com/wassname/f38f8774b6f97977b660d20dfa0f0036 | |
lic:MIT | |
author:wassname | |
usage: | |
batch_size=16 | |
chunk_size=batch_size*4 |
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#!/usr/bin/env python | |
# coding: utf-8 | |
get_ipython().run_line_magic('pylab', 'inline') | |
import torch | |
def jaccard_distance_loss(y_true, y_pred, smooth=100): | |
""" | |
Jaccard = (|X & Y|)/ (|X|+ |Y| - |X & Y|) | |
= sum(|A*B|)/(sum(|A|)+sum(|B|)-sum(|A*B|)) | |
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def cache_load_utturances(ttl=360000): | |
""" | |
Decorator for wrapping simple cache around load_utterances. | |
Since some arguments are unhashable (tokenizer) or immutable (list) we need to make the key manually | |
""" | |
def decorate(func): | |
@simple_cache.wraps(func) | |
def wrapper(**kwargs): |
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""" | |
@url: https://gist.github.com/wassname/f3cbdc14f379ba9ec2acfafe5c1db592 | |
""" | |
import pandas as pd | |
import sklearn.metrics | |
import numpy as np | |
def classification_report(*args, **kwargs): | |
""" | |
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import numpy as np | |
# handle pytorch tensors etc, by using tensorboardX's method | |
try: | |
from tensorboardX.x2num import make_np | |
except ImportError: | |
def make_np(x): | |
return np.array(x).copy().astype('float16') | |
class RunningStats(object): |