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@endolith
endolith / delay.py
Last active January 3, 2022 15:13
Distance between two microphones from delay of collinear source
"""
Measure the distance between two microphones based on the delay of a
clap from a point that is collinear with the two microphones.
Make sure your signal isn't clipping.
First test:
2 electrets 26 cm apart, hand clap
Distance: -25.72 cm
Sub-sample distance: -26.02 cm
@darrenderidder
darrenderidder / bashpath.sh
Created May 16, 2011 15:24
Get path of running script in bash
#!/bin/bash
# A simple test script to demonstrate how to find the
# "absolute path" at which a script is running. Used
# to avoid some of the pitfals of using 'pwd' or hard-
# coded paths when running scripts from cron or another
# directory.
#
# Try it out:
# run the script from the current directory, then
#include <cstring>
#include <numeric>
#include <functional>
/**
* Hackers Delight: http://www.hackersdelight.org/HDcode/nlz.c.txt
*/
int pop(unsigned x) {
x = x - ((x >> 1) & 0x55555555);
x = (x & 0x33333333) + ((x >> 2) & 0x33333333);
@rygorous
rygorous / gist:4172889
Created November 30, 2012 00:28
SSE/AVX matrix multiply
#include <immintrin.h>
#include <intrin.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
union Mat44 {
float m[4][4];
__m128 row[4];
};
@stober
stober / gp.py
Created February 16, 2013 00:17
Gaussian Process in Python
#!/usr/bin/python
"""
Author: Jeremy M. Stober
Program: GP.PY
Date: Thursday, July 17 2008
Description: Example of Gaussian Process Regression.
"""
from numpy import *
import pylab
@ktuite
ktuite / mturk_boto_intro.py
Last active August 19, 2020 07:06
Super simple python script that uses boto to connect to amazon mturk. If you use the sandbox, you'll see a balance of $10,000! Otherwise, you'll see your normal balance.
import boto.mturk.connection
sandbox_host = 'mechanicalturk.sandbox.amazonaws.com'
real_host = 'mechanicalturk.amazonaws.com'
mturk = boto.mturk.connection.MTurkConnection(
aws_access_key_id = 'XXX',
aws_secret_access_key = 'XXX',
host = sandbox_host,
debug = 1 # debug = 2 prints out all requests. but we'll just keep it at 1
@myusuf3
myusuf3 / delete_git_submodule.md
Created November 3, 2014 17:36
How effectively delete a git submodule.

To remove a submodule you need to:

  • Delete the relevant section from the .gitmodules file.
  • Stage the .gitmodules changes git add .gitmodules
  • Delete the relevant section from .git/config.
  • Run git rm --cached path_to_submodule (no trailing slash).
  • Run rm -rf .git/modules/path_to_submodule (no trailing slash).
  • Commit git commit -m "Removed submodule "
  • Delete the now untracked submodule files rm -rf path_to_submodule
@karpathy
karpathy / gist:587454dc0146a6ae21fc
Last active July 11, 2024 10:36
An efficient, batched LSTM.
"""
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):
@karpathy
karpathy / min-char-rnn.py
Last active July 22, 2024 04:44
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)
@aaronpolhamus
aaronpolhamus / map_clsloc.txt
Created May 12, 2016 01:21
Image net classes + labels
n02119789 1 kit_fox
n02100735 2 English_setter
n02110185 3 Siberian_husky
n02096294 4 Australian_terrier
n02102040 5 English_springer
n02066245 6 grey_whale
n02509815 7 lesser_panda
n02124075 8 Egyptian_cat
n02417914 9 ibex
n02123394 10 Persian_cat