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# ----------------------------------------------------------------------------- | |
# From https://en.wikipedia.org/wiki/Minkowski–Bouligand_dimension: | |
# | |
# In fractal geometry, the Minkowski–Bouligand dimension, also known as | |
# Minkowski dimension or box-counting dimension, is a way of determining the | |
# fractal dimension of a set S in a Euclidean space Rn, or more generally in a | |
# metric space (X, d). | |
# ----------------------------------------------------------------------------- | |
import scipy.misc | |
import numpy as np |
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""" | |
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) |
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""" | |
This is a batched LSTM forward and backward pass | |
""" | |
import numpy as np | |
import code | |
class LSTM: | |
@staticmethod | |
def init(input_size, hidden_size, fancy_forget_bias_init = 3): |
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from pyspark import SparkContext | |
import numpy as np | |
from sklearn.cross_validation import train_test_split, Bootstrap | |
from sklearn.datasets import make_classification | |
from sklearn.metrics import accuracy_score | |
from sklearn.tree import DecisionTreeClassifier | |
def run(sc): |
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from __future__ import division | |
import numpy as np | |
import pandas as pd | |
import random | |
def sample(data): | |
sample = [random.choice(data) for _ in xrange(len(data))] | |
return sample | |
def bootstrap_t_test(treatment, control, nboot = 1000, direction = "less"): |
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def convert_ts(time_series, start_year=2000, start_pd=4, freq=23): | |
""" | |
Convert a numpy time-series into an rpy2 object, which, in turn, | |
is a 'ts' object in R. The 'ts' object is more wholly specified | |
if a start date is provided. For our applications at 16-day | |
intervals for NDVI, this start date is April 2000, with a | |
frequency of 23 observations each year. | |
input: numpy time-series | |
output: rpy2 ts object |