- Probabilistic Data Structures for Web Analytics and Data Mining : A great overview of the space of probabilistic data structures and how they are used in approximation algorithm implementation.
- Models and Issues in Data Stream Systems
- Philippe Flajolet’s contribution to streaming algorithms : A presentation by Jérémie Lumbroso that visits some of the hostorical perspectives and how it all began with Flajolet
- Approximate Frequency Counts over Data Streams by Gurmeet Singh Manku & Rajeev Motwani : One of the early papers on the subject.
- [Methods for Finding Frequent Items in Data Streams](http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.187.9800&rep=rep1&t
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/* | |
* Copyright (c) 2009-2017, Farooq Mela | |
* All rights reserved. | |
* | |
* Redistribution and use in source and binary forms, with or without | |
* modification, are permitted provided that the following conditions are met: | |
* | |
* 1. Redistributions of source code must retain the above copyright | |
* notice, this list of conditions and the following disclaimer. | |
* 2. Redistributions in binary form must reproduce the above copyright |
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double | |
agm_log(double x) | |
{ | |
double a, b, e, e0 = DBL_MAX; | |
assert(x > 0.0); | |
for (a = (x + 1.0) * 0.5, b = sqrt(x); (e = fabs(a - b)) < e0; e0 = e) { | |
a = 0.5 * (a + b); | |
b = sqrt(a * b); |
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license: gpl-3.0 |
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MongoDB upstart scripts for Ubuntu. | |
Run following commands after installing upstart scripts: | |
ln -s /lib/init/upstart-job /etc/init.d/mongoconf | |
ln -s /lib/init/upstart-job /etc/init.d/mongodb | |
ln -s /lib/init/upstart-job /etc/init.d/mongos | |
To start services use: |
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Latency Comparison Numbers (~2012) | |
---------------------------------- | |
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 |
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{ | |
{I have|I've} been {surfing|browsing} online more than {three|3|2|4} hours today, yet I never found any interesting article like yours. {It's|It | |
is} pretty worth enough for me. {In my opinion|Personally|In my view}, if all {webmasters|site owners|website owners|web owners} and bloggers made good content as | |
you did, the {internet|net|web} will be {much more|a lot more} | |
useful than ever before.| | |
I {couldn't|could not} {resist|refrain from} commenting. {Very well|Perfectly|Well|Exceptionally well} written!| | |
{I will|I'll} {right away|immediately} {take hold of|grab|clutch|grasp|seize|snatch} | |
your {rss|rss feed} as I {can not|can't} {in finding|find|to find} your {email|e-mail} subscription {link|hyperlink} or {newsletter|e-newsletter} service. Do {you have|you've} any? | |
{Please|Kindly} {allow|permit|let} me {realize|recognize|understand|recognise|know} {so that|in order that} I {may just|may|could} subscribe. | |
Thanks.| |
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SOURCES = $(wildcard *.c) | |
HEADERS = $(wildcard *.h) | |
OBJECTS = $(SOURCES:%.c=%.o) | |
PROGRAM = $(shell basename `pwd`) | |
CC := $(shell which clang || which gcc) | |
CFLAGS = -Wall -W -O | |
LIBS = | |
LDFLAGS = $(LIBS:%=-l%) |
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SOURCES = $(wildcard *.cxx) | |
HEADERS = $(wildcard *.hxx) | |
OBJECTS = $(SOURCES:%.cxx=%.o) | |
PROGRAM = $(shell basename `pwd`) | |
CC := $(shell which clang || which gcc) | |
CFLAGS = -Wall -W -O -fno-exceptions -fno-rtti | |
LIBS = stdc++ m | |
LDFLAGS = $(LIBS:%=-l%) |
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int f(int x, int negate) { | |
return (x ^ -negate) + negate; | |
} |
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