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@Newmu
Newmu / conv_deconv_variational_autoencoder.py
Last active May 26, 2024 12:32
Prototype code of conv/deconv variational autoencoder, probably not runable, lots of inter-dependencies with local codebase =/
import theano
import theano.tensor as T
from theano.sandbox.rng_mrg import MRG_RandomStreams as RandomStreams
from theano.tensor.signal.downsample import max_pool_2d
from theano.tensor.extra_ops import repeat
from theano.sandbox.cuda.dnn import dnn_conv
from time import time
import numpy as np
from matplotlib import pyplot as plt
@kastnerkyle
kastnerkyle / conv_deconv_vae.py
Last active April 21, 2023 01:18
Convolutional Variational Autoencoder, modified from Alec Radford at (https://gist.github.com/Newmu/a56d5446416f5ad2bbac)
# Alec Radford, Indico, Kyle Kastner
# License: MIT
"""
Convolutional VAE in a single file.
Bringing in code from IndicoDataSolutions and Alec Radford (NewMu)
Additionally converted to use default conv2d interface instead of explicit cuDNN
"""
import theano
import theano.tensor as T
from theano.compat.python2x import OrderedDict
@karpathy
karpathy / min-char-rnn.py
Last active June 9, 2024 20:26
Minimal character-level language model with a Vanilla Recurrent Neural Network, in Python/numpy
"""
Minimal character-level Vanilla RNN model. Written by Andrej Karpathy (@karpathy)
BSD License
"""
import numpy as np
# data I/O
data = open('input.txt', 'r').read() # should be simple plain text file
chars = list(set(data))
data_size, vocab_size = len(data), len(chars)
@saliksyed
saliksyed / autoencoder.py
Created November 18, 2015 03:30
Tensorflow Auto-Encoder Implementation
""" Deep Auto-Encoder implementation
An auto-encoder works as follows:
Data of dimension k is reduced to a lower dimension j using a matrix multiplication:
softmax(W*x + b) = x'
where W is matrix from R^k --> R^j
A reconstruction matrix W' maps back from R^j --> R^k
@fchollet
fchollet / classifier_from_little_data_script_1.py
Last active May 15, 2024 07:19
Updated to the Keras 2.0 API.
'''This script goes along the blog post
"Building powerful image classification models using very little data"
from blog.keras.io.
It uses data that can be downloaded at:
https://www.kaggle.com/c/dogs-vs-cats/data
In our setup, we:
- created a data/ folder
- created train/ and validation/ subfolders inside data/
- created cats/ and dogs/ subfolders inside train/ and validation/
- put the cat pictures index 0-999 in data/train/cats
@fchollet
fchollet / classifier_from_little_data_script_2.py
Last active September 13, 2023 03:34
Updated to the Keras 2.0 API.
'''This script goes along the blog post
"Building powerful image classification models using very little data"
from blog.keras.io.
It uses data that can be downloaded at:
https://www.kaggle.com/c/dogs-vs-cats/data
In our setup, we:
- created a data/ folder
- created train/ and validation/ subfolders inside data/
- created cats/ and dogs/ subfolders inside train/ and validation/
- put the cat pictures index 0-999 in data/train/cats
@juanpabloaj
juanpabloaj / README.md
Last active June 18, 2018 13:02
Total of pip packages downloaded, separated by Python versions

Total of pip packages downloaded separated by Python versions

From June 26, 2016 (python 3.5.2 release) to Aug. 31, 2016.

Python versions from 2.6 to 3.5

downloads_by_versions

Without 2.7

@wassname
wassname / keras_weighted_categorical_crossentropy.py
Last active December 19, 2023 18:17
Keras weighted categorical_crossentropy (please read comments for updated version)
"""
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
@wrwrwr
wrwrwr / lambda.sh
Created February 15, 2017 23:32
Package a Python module with NumPy and SciPy for AWS Lambda.
#!/usr/bin/env bash
# Path to the project directory (that should include requirements.txt),
# Files and directories within that need to be deployed.
project=../backend
contents=(module lamdba_handler.py)
# Unnecessary parts. Note that there are some inter-dependencies in SciPy,
# for example to use scipy.stats you also need scipy.linalg, scipy.integrate,
# scipy.misc, scipy.sparse, and scipy.special.
@simonkamronn
simonkamronn / bland_altman.py
Created March 1, 2017 16:25
Bland-Altman plot in Bokeh with vertical histogram and normal fit on the right y-axis
from scipy.stats import norm, shapiro, kstest, anderson
import bokeh.plotting as bplt
from bokeh import layouts
from bokeh.charts import Histogram, Scatter
from bokeh.models import Span
import pandas as pd
import numpy as np
def vertical_histogram(y):