Chris Luedtke chrisluedtke
colejhudson
/ rosenbrock.py
Last active
February 24, 2019 08:10
Manual gradient descent over the rosenbrock function
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| from mpl_toolkits.mplot3d import Axes3D | |
| import matplotlib.pyplot as plt | |
| from matplotlib import cm | |
| import numpy as np | |
| def derivative(f): | |
| def df(x, h=0.1e-10): | |
| return (f(x+h)-f(x-h))/(2*h) | |
| return df |
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| from datetime import datetime, timedelta | |
| import networkx as nx | |
| from airflow import DAG | |
| from airflow.operators import BashOperator, SubDagOperator | |
| start_date = datetime(year=2017, month=6, day=13, hour=19, minute=0) | |
| schedule_interval = '0 * * * 1-5' | |
| default_args = { |
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| '''Provides utility functions for encoding and decoding linestrings using the | |
| Google encoded polyline algorithm. | |
| ''' | |
| def encode_coords(coords): | |
| '''Encodes a polyline using Google's polyline algorithm | |
| See http://code.google.com/apis/maps/documentation/polylinealgorithm.html | |
| for more information. | |