IshankGulati’s gists

IshankGulati / latency.txt

Created November 2, 2016 09:54 — forked from jboner/latency.txt

Latency Numbers Every Programmer Should Know

	Latency Comparison Numbers
	--------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns 3 us
	Send 1K bytes over 1 Gbps network 10,000 ns 10 us
	Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD

IshankGulati / RVObserver.java

Last active December 2, 2020 07:54

Base Adapter and RecyclerView.ViewHolder implementation for delegating clicks to Fragment to which adapter is attached. This gist is inspired from https://gist.github.com/aurae/ebf8ec212e4296aebb24 .

	/**
	* Created by Ishank Gulati on 14/10/16.
	* Observer as per Observer design pattern.
	*/

	public interface RVObserver {
	void update(RecyclerViewItemClickListener listener);
	}

IshankGulati / kalmanFilter.py

Created February 29, 2016 15:24

A multi-dimensional implementation of Kalman Filter in Python

	# Multi dimensional Kalman filter

	from math import *

	class matrix:

	# implements basic operations of a matrix class

	def __init__(self, value):
	self.value = value

IshankGulati / AnisotropicDiffusion.cpp

Created December 13, 2015 08:32

Anisotropic (Perona–Malik) Diffusion

	/* Anisotropic (Perona–Malik) Diffusion

	Author: Ishank Gulati <[email protected]>

	Reference
	---------
	Scale-Space and Edge Detection using Anisotropic Diffusion
	Pietro Perona and Jitendra Malik
	IEEE Transactions on Pattern Analysis and Machine Intelligence, VOL. 12, NO. 7, JULY 1990

IshankGulati / GA_clustering.py

Last active January 18, 2023 07:37

Clustering using Genetic Algorithm

	"""Clustering using Genetic Algorithm"""

	# Author: Ishank Gulati <[email protected]>

	from __future__ import print_function
	from __future__ import division

	import numpy as np
	from scipy.spatial.distance import euclidean
	import scipy.misc as spm

IshankGulati / kernel_kmeans.py

Created November 8, 2015 12:19 — forked from mblondel/kernel_kmeans.py

Kernel K-means.

	"""Kernel K-means"""

	# Author: Mathieu Blondel <[email protected]>
	# License: BSD 3 clause

	import numpy as np

	from sklearn.base import BaseEstimator, ClusterMixin
	from sklearn.metrics.pairwise import pairwise_kernels
	from sklearn.utils import check_random_state

IshankGulati / KMeans.py

Last active December 19, 2015 16:33

Image Segmentation using K-means clustering

	"""Image Segmentation using K-means Clustering"""

	# Author: Ishank Gulati <[email protected]>

	from __future__ import print_function
	from __future__ import division

	import numpy as np
	from scipy.spatial.distance import euclidean
	import scipy.misc as spm

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