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Twilio Segment Blog
Connections Overview Integrate web and mobile app data with a single API Warehouses Easily transf orm and load customer data Reverse ETL Move warehouse data to your applications Functions Customize your customer data pipeline Developer Toolkit Build on Twilio Segment
yass 2018/12/31
id

uuid

timestamp

random
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GitHub - ulid/spec: The canonical spec for ulid
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yass 2018/12/31
id

uuid

base32

timesamp

random
ãƒªãƒ³ã‚¯
xoshiro/xoroshiro generators and the PRNG shootout
Introduction This page describes some new pseudorandom number generators (PRNGs) we (David Blackman and I) have been working on recently, and a shootout comparing them with other generators. Details about the generators can be found in our paper. Information about my previous xorshift-based generators can be found here, but they have been entirely superseded by the new ones, which are faster and b
yass 2017/07/22
xor

random

xorshift
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#æ¸‹è°·java ã‚ãªãŸã¨ä¹±æ•°ç”Ÿæˆã¨Java
ç¬¬åå›ž #æ¸‹è°·java http://shibuya-java.connpass.com/event/11574/ ã§ã®ç™ºè¡¨è³‡æ–™ã§ã™ã€‚Java ã§ä¹±æ•°ç”Ÿæˆã™ã‚‹ã¨ãã®ãŠè©±ã‚’ã—ã¾ã—ãŸã€‚
yass 2015/03/07
java

random

threadlocal
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Stockfish DD â€“ rkiss | ã‚„ãã†ã‚‰çŽ‹ å…¬å¼ã‚µã‚¤ãƒˆ
ä»Šå›žã¯æ“¬ä¼¼ä¹±æ•°ç”Ÿæˆå™¨ã§ã™ã€‚ä¸–é–“ã§ã¯ã€Œä¹±æ•°ã¨è¨€ãˆã°MT(Mersenne twister : ãƒ¡ãƒ«ã‚»ãƒ³ãƒŒãƒ„ã‚¤ã‚¹ã‚¿ãƒ¼)ä¹±æ•°ã ã‚ã€ã¨æ€ã‚ã‚Œã¦ã„ã‚‹ã‹ã‚‚çŸ¥ã‚Œã¾ã›ã‚“ãŒã€MTä¹±æ•°ã¯ç”Ÿæˆã«çµæ§‹ã‚³ã‚¹ãƒˆãŒã‹ã‹ã‚‹ã®ã§ã€ãƒ™ã‚¹ãƒˆãªã‚½ãƒªãƒ¥ãƒ¼ã‚·ãƒ§ãƒ³ã¨ã¯è¨€ãˆã¾ã›ã‚“ã€‚ã‹ã¨è¨€ã£ã¦ã€çµ„ã¿è¾¼ã¿ç³»ã®ä¹±æ•°ã¯ä¹±æ•°ã®ç²¾åº¦ãŒä»Šã²ã¨ã¤ã§ã™ã®ã§ãã†ã„ã†éƒ¨åˆ†ã§åã‚ŠãŒå‡ºã‚‹ã®ã¯å›°ã‚Šã¾ã™ã€‚(å®šè·¡é¸æŠžã§ä¹±æ•°ã‚’ä½¿ã†ã®ã§ã€ä¹±æ•°ã«åã‚ŠãŒã‚ã‚‹ã¨é€£ç¶šè‡ªå·±å¯¾æˆ¦ã®å‹çŽ‡ã«åã‚ŠãŒç”Ÿã˜ã‹ããªã„) Stockfishã§æŽ¡ç”¨ã•ã‚Œã¦ã„ã‚‹ã®ã¯RKISSã¨ã„ã†ä¹±æ•°ã§ã€ã“ã®ä¹±æ•°ã®å®Ÿè£…ã‚’è¦‹ã‚‹ãŸã‚ã ã‘ã«ã§ã‚‚ã€Stockfishã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’èªã‚€ä¾¡å€¤ã¯ã‚ã‚‹ã¨ç§ã¯æ€ã„ã¾ã™ã€‚ /* Stockfish, a UCI chess playing engine derived from Glaurung 2.1 Copyright (C) 2004-2008 Tord Romstad (Glau
yass 2015/02/22
" Stockfishã§æŽ¡ç”¨ã•ã‚Œã¦ã„ã‚‹ã®ã¯RKISSã¨ã„ã†ä¹±æ•°ã§ã€ã“ã®ä¹±æ•°ã®å®Ÿè£…ã‚’è¦‹ã‚‹ãŸã‚ã ã‘ã«ã§ã‚‚ã€Stockfishã®ã‚½ãƒ¼ã‚¹ã‚³ãƒ¼ãƒ‰ã‚’èªã‚€ä¾¡å€¤ã¯ã‚ã‚‹ã¨ç§ã¯æ€ã„ã¾ã™ã€‚"

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ç¬¬å…«å›ž #æ¸‹è°·java - Java 8 ã§é€ ã‚‹èªè¨¼ç³»
ç¬¬å…«å›ž #æ¸‹è°·java http://shibuya-java.connpass.com/event/8212/ ã§ã®ç™ºè¡¨è³‡æ–™ã§ã™ã€‚ ã‚µãƒ³ãƒ—ãƒ«å®Ÿè£…ã¯ https://gist.github.com/komiya-atsushi/6ffac79533c3bfad8bba ã“ã¡ã‚‰ã§ã™ã€‚
yass 2014/09/20
java8

random

security

authentication

password
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haveged - a simple entropy daemon
haveged - A simple entropy daemon Introduction The haveged project is an attempt to provide an easy-to-use, unpredictable random number generator based upon an adaptation of the HAVEGE algorithm. Haveged was created to remedy low-entropy conditions in the Linux random device that can occur under some workloads, especially on headless servers. Current development of haveged is directed towards impr
yass 2014/03/01
" Haveged was created to remedy low-entropy conditions in the Linux random device that can occur under some workloads, especially on headless servers. "

random

linux
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Google Code Archive - Long-term storage for Google Code Project Hosting.
Code Archive Skip to content Google About Google Privacy Terms
yass 2014/01/29
java

random
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Javaã§æ¯Žå›žå®Œå…¨ã«ç•°ãªã‚‹ä¹±æ•°ã‚’å–å¾—ã™ã‚‹æ–¹æ³• - No Programming, No Life
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yass 2013/12/25
" ã“ã‚Œã§å®Œç’§ï¼ã¨æ€ã£ã¦ã„ãŸã®ã§ã™ãŒã€å®Ÿã¯å˜ç´”ã«ã‚‚ã£ã¨ã‚·ãƒ³ãƒ—ãƒ«ãªåˆ¥è§£ãŒã‚ã£ãŸã‚ˆã†ã§ã™ã€‚ java.lang.Math#random() "

java

random
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Ivy Bridgeä»¥é™ã®CPUã§ã¯CPUå†…ã«ä¹±æ•°ç”Ÿæˆå™¨ãŒå«ã¾ã‚Œã¦ã„ã¾ã™ã€‚ãã‚Œã«å¯¾å¿œã—ãŸæœ€è¿‘ã®rngdã‚’ã¤ã‹ã†ã¨ãã‚Œãªã‚Šã«ä¹±æ•°ç”ŸæˆãŒé€Ÿãã¦ã—ã‚ã‚ã›ã«ãªã‚Œã¾ã™ã€‚ linuxã§ã¯ä¹±æ•°ã‚’å–å¾—ã™ã‚‹ãŸã‚ã« /dev/random ã¨ /dev/urandom ã®2ç¨®é¡žã®ãƒ‡ãƒã‚¤ã‚¹ãŒã‚ã‚Šã¾ã™ã€‚ãã‚Œãžã‚Œã®èª¬æ˜Žã¯ man 4 random ã«ã¿ã£ã¡ã‚Šæ›¸ã„ã¦ã‚ã‚Šã¾ã™ãŒã€ã‹ã„ã¤ã¾ã‚“ã§è¨€ã†ã¨: random: ã‚«ãƒ¼ãƒãƒ«ãŒã‚ã¤ã‚ã¦ããŸãƒŽã‚¤ã‚ºã‚’å…ƒã«å“è³ªã®é«˜ã„ç–‘ä¼¼ä¹±æ•°ã‚’ç”Ÿæˆã—ã¾ã™ã€‚ãƒŽã‚¤ã‚ºãŒä¸è¶³ã™ã‚‹ã¨blockã—ã¾ã™ã€‚ urandom: ã‚«ãƒ¼ãƒãƒ«ãŒã‚ã¤ã‚ã¦ããŸãƒŽã‚¤ã‚ºã‚’å…ƒã«ãã“ãã“ã®å“è³ªã®ç–‘ä¼¼ä¹±æ•°ã‚’ç”Ÿæˆã—ã¾ã™ã€‚å“è³ªã¯ãã“ãã“ã§ã™ãŒblockã—ãªã„ã®ã§é€Ÿã„ã§ã™ã€‚ ãŸã‚ã—ã«cat /dev/random ã¨ã‹ã™ã‚‹ã¨1kã¨ã‹4kãã‚‰ã„ä¹±æ•°ãŒå‡ºåŠ›ã•ã‚Œã¦æ¢ã¾ã£ã¦ã—ã¾ã†ã€‚ã“ã‚Œã§ã¯å‰²ã¨è¶³ã‚Šãªã„ã®ã§é¸æŠžè‚¢ãŒ2ç¨®é¡žã€‚1ï¼‰ å“è³ªã‚’ã‚ãã‚‰ã‚ã¦u
yass 2013/12/12
" Ivy Bridgeä»¥é™ã®CPUã§ã¯CPUå†…ã«ä¹±æ•°ç”Ÿæˆå™¨ãŒå«ã¾ã‚Œã¦ã„ã¾ã™ã€‚ãã‚Œã«å¯¾å¿œã—ãŸæœ€è¿‘ã®rngdã‚’ã¤ã‹ã†ã¨ãã‚Œãªã‚Šã«ä¹±æ•°ç”ŸæˆãŒé€Ÿãã¦ã—ã‚ã‚ã›ã«ãªã‚Œã¾ã™ã€‚"

random

CPU
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Google Code Archive - Long-term storage for Google Code Project Hosting.
Code Archive Skip to content Google About Google Privacy Terms
yass 2013/11/09
"Provides java.util.Random extension for Linux and Mac OSX wrapping Intel's Digital Random Number Generator (DRNG) known as Intel Secure Key, a name for its RDRAND instruction accessible via its free library librdrand, using JNI/ RdRandRandom was consistently about 10 times faster than SecureRandom"

java

random

intel

jni
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ã‚µãƒ¼ãƒ“ã‚¹çµ‚äº†ã®ãŠçŸ¥ã‚‰ã› ã„ã¤ã‚‚Yahoo! JAPANã®ã‚µãƒ¼ãƒ“ã‚¹ã‚’ã”åˆ©ç”¨ã„ãŸã ãèª ã«ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚ ãŠå®¢æ§˜ãŒã‚¢ã‚¯ã‚»ã‚¹ã•ã‚ŒãŸã‚µãƒ¼ãƒ“ã‚¹ã¯æœ¬æ—¥ã¾ã§ã«ã‚µãƒ¼ãƒ“ã‚¹ã‚’çµ‚äº†ã„ãŸã—ã¾ã—ãŸã€‚ ä»Šå¾Œã¨ã‚‚Yahoo! JAPANã®ã‚µãƒ¼ãƒ“ã‚¹ã‚’ã”æ„›é¡§ãã ã•ã„ã¾ã™ã‚ˆã†ã€ã‚ˆã‚ã—ããŠé¡˜ã„ã„ãŸã—ã¾ã™ã€‚
yass 2013/10/29
" ã‚»ãƒ«ã®ãƒ¬ãƒ™ãƒ«ã¯ä¹±æ•°ã§æ±ºã‚ã‚‹ / å‡ºç¾ç¢ºçŽ‡ã§è¡¨ã™ã¨ã€Level 0 ãŒ 1 / 2, Level 1 ãŒ 1 / 4, Level 2 ãŒ 1/ 8, ... Level k ãŒ 1 / 2k+1 ã«ãªã‚Šã¾ã™ã€‚ã“ã®ç¢ºçŽ‡ã§ã‚»ãƒ«ã®ãƒ¬ãƒ™ãƒ«ã‚’è¨å®šã™ã‚Œã°ã„ã„ã‚ã‘ã§ã™ã€‚"

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How secure is Linux's random number generator? | Hacker News Hacker Newsã§è©±é¡Œã«ãªã£ã¦ã„ãŸã®ã§ã€‚ ä¸»ã«æš—å·ç”¨é€”ã«ã¯ã€äºˆæ¸¬ä¸å¯èƒ½ãªä¹±æ•°ãŒå¿…è¦ã¨ãªã‚‹ã€‚äºˆæ¸¬ä¸å¯èƒ½ã¨ã„ã†ã®ã¯ã€å®Ÿè£…ã¨å†…éƒ¨çŠ¶æ…‹ãŒçŸ¥ã‚‰ã‚Œã¦ã„ã¦ã‚‚ã€ãªãŠå°†æ¥ã®ä¹±æ•°ãŒäºˆæ¸¬ã§ããªã„ã¨ã„ã†ã“ã¨ã ã€‚ ãŸã¨ãˆã°ã€æ“¬ä¼¼ä¹±æ•°ã¨ã—ã¦ã‚ˆãä½¿ã‚ã‚Œã‚‹ç·šå½¢åˆåŒæ³•(Linear congruential generator)ã¯ã€ä»¥ä¸‹ã®ã‚ˆã†ã«æ›¸ã‘ã‚‹ã€‚ namespace lcg { thread_local unsigned int seed ; void srand( unsigned int seed ) { lcg::seed = seed ; } int rand( void ) { // glibcã®ä½¿ã£ã¦ã„ã‚‹å€¤ã‚’æ‹å€Ÿ seed = (1103515245 * seed + 12345
yass 2013/07/15
" Intelã®Ivy Bridgeã§ã¯ã€rdrandã¨ã„ã†å‘½ä»¤ãŒè¿½åŠ ã•ã‚ŒãŸ / CPUã«çµ„ã¿è¾¼ã¾ã‚ŒãŸä¹±æ•°ç”Ÿæˆå™¨ã«ã‚ˆã£ã¦ã€äºˆæ¸¬ä¸å¯èƒ½ãªä¹±æ•°ã‚’é«˜é€Ÿã«ç”Ÿæˆã™ã‚‹ã“ã¨ãŒã§ãã‚‹ / ãƒãƒ¼ãƒ‰ã‚¦ã‚§ã‚¢ã¯ä¿¡é ¼ã§ãã‚‹ã‹ã¨ã„ã†å•é¡Œã ã€‚Intelã®CPUã¯ä¿¡é ¼ã§ãã‚‹ã®ã‹"

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ivybridge

cpu

intel

linux
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è¨ˆç®—å¹¾ä½•å¦å•é¡Œã€Œã‚ãƒ¥ãƒ©ã‚²ã®æœ€å°åŒ…å«å††ã‚’æ±‚ã‚ã‚ˆã†ã€ã®è§£èª¬è¨˜äº‹ã§ã™ï¼ã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã¯ã€Œä¹±æŠžã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã€ #ã‚²ãƒ¼ãƒ é–‹ç™º - CodeIQ Blog
CodeIQä¸ã®äººã€millionsmileã§ã™ã€‚ å‡ºé¡Œè€…ã®stakemuraã•ã‚“ã«ã‚ˆã‚‹ã€Œè¨ˆç®—å¹¾ä½•å¦ã€å•é¡Œã®è§£èª¬è¨˜äº‹ã§ã™ã€‚ ã‚¢ã‚¯ã‚·ãƒ§ãƒ³ã‚²ãƒ¼ãƒ ãªã©ã§ã‚ãƒ£ãƒ©ã‚¯ã‚¿ãƒ¼ã‚’æ”»æ’ƒã™ã‚‹ã¨ãã€ãƒŠã‚¤ãƒ¼ãƒ–ã«ï¼‘ã‚ãƒ£ãƒ©ã‚¯ã‚¿ãƒ¼ã”ã¨ã«ï¼‘ãƒ”ã‚¯ã‚»ãƒ«å˜ä½ã§å‡¦ç†ã—ã¦ã„ãŸã‚‰ã€è¨ˆç®—æ™‚é–“ã¯å¤§å¤‰ãªã“ã¨ã«ãªã‚Šã¾ã™ã€‚ã•ã¦ã€ã©ã†ã‚„ã£ãŸã‚‰ç‰©ç†æ¼”ç®—ã‚’è»½ãã§ãã‚‹ã®ã§ã—ã‚‡ã†ã‹ï¼Ÿã‚ãƒ¼ãƒ¯ãƒ¼ãƒ‰ã¯ã€Œä¹±æŠžã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã€ã§ã™ã€‚ ã‚²ãƒ¼ãƒ é–‹ç™ºã‚’ã—ã¦ã„ã‚‹æ–¹ã¯å¿…è¦‹ã®è¨˜äº‹ã§ã™ã€‚ =============================== é«˜é€ŸåŒ–ã®ç§˜è¨£ã¯ä¹±æ•°ã«ã‚ã‚Š stakemuraã§ã™ã€‚ å…ˆæœˆã€ã€Œã‚ãƒ¥ãƒ©ã‚²ã®æœ€å°åŒ…å«å††ã‚’æ±‚ã‚ã‚ˆã†ã€ã¨ã„ã†ã‚¿ã‚¤ãƒˆãƒ«ã§ã€CodeIQã§ã¯åˆã¨ãªã‚‹è¨ˆç®—å¹¾ä½•å¦ã®å•é¡Œã‚’å¯„ç¨¿ã•ã›ã¦é ‚ãã¾ã—ãŸã€‚ã„ããªã‚Šã®é›£å•ã ã£ãŸã«ã‚‚é–¢ã‚ã‚‰ãšï¼’ï¼”åã‚‚ã®æ–¹ã«æŒ‘æˆ¦ã—ã¦é ‚ãã€ä¸ã«ã¯å½“æ–¹ãŒé©šã‹ã•ã‚Œã‚‹ã‚ˆã†ãªå›žç”ã‚‚ã‚ã£ãŸã‚Šã—ã¦ã€é”æˆæ„Ÿã‚’å™›ã¿ç· ã‚ã¦ã„ã‚‹ä»Šæ—¥ã“ã®é ƒã§ã™ã€‚ã•ã¦ã€æŒ‘æˆ¦è€…ãŒ
yass 2013/07/04
Algorithm

Random

k-means++
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yass 2013/07/03
cpu

IvyBridge

random

intel
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yass 2013/03/14
random

java

MT

comparison
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GitHub - cambecc/drnglib: drnglib is a Java library that provides access to Intel's Digital Random Number Generator.
yass 2013/03/10
random

java

intel

cpu

UUID
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2009å¹´1æœˆ31æ—¥ã«64 bit Ubuntu ã‚’å°Žå…¥ã—ãŸã®ã§ã€ 64 bit gcc ã§ã®å‹•ä½œç¢ºèªã€æ€§èƒ½è©•ä¾¡ã€ãƒãƒ¥ãƒ¼ãƒ‹ãƒ³ã‚°ã®ä½œæ¥ã‚’ã—ã¾ã—ãŸã€‚ æ–°ã—ãé–‹ç™ºã—ã¾ã—ãŸ(64 bit éžå¯¾å¿œ) jump.c.html : Xorshift ã§æˆ»ã£ãŸã‚Šä¸€çž¬ã§ç›¸å¯¾ã‚¸ãƒ£ãƒ³ãƒ—ã§ãã‚‹ãƒ—ãƒã‚°ãƒ©ãƒ æµ®å‹•å°æ•°ç‚¹æ•°ã«ç‰¹åŒ–ã—ãŸä¹±æ•°ãƒ©ã‚¤ãƒ–ãƒ©ãƒª(SSE2å¯¾å¿œ) zdsfmt.zip : ãƒ©ã‚¤ãƒ–ãƒ©ãƒªæœ¬ä½“ä¸€å¼ libZD.zip : ã‚¨ã‚¯ã‚»ãƒ«ã®ãŸã‚ã®ãƒ€ã‚¤ãƒŠãƒŸãƒƒã‚¯ãƒ»ãƒªãƒ³ã‚¯ãƒ»ãƒ©ã‚¤ãƒ–ãƒ©ãƒª(ï¼¤ï¼¬ï¼¬)ä¸€å¼ 32ãƒ“ãƒƒãƒˆæ•´æ•°ã®ç”Ÿæˆã¯ä»–ã®ã«æ¯”ã¹å°‘ã—é…ããªã‚Šã¾ã™ãŒã€æµ®å‹•å°æ•°ç‚¹æ•°ã®ç”Ÿæˆã¯ã‹ãªã‚Šé«˜é€Ÿã§ã™ã€‚ å…ƒã®ãƒ¡ãƒ«ã‚»ãƒ³ãƒŒãƒ»ãƒ„ã‚¤ã‚¹ã‚¿ã‚’ä½¿ã£ãŸä¹±æ•°ãƒ©ã‚¤ãƒ–ãƒ©ãƒª(SSE3å¯¾å¿œ) zmtrand.zip : ãƒ©ã‚¤ãƒ–ãƒ©ãƒªæœ¬ä½“ä¸€å¼ libZMT.zip : ã‚¨ã‚¯ã‚»ãƒ«ã®ãŸã‚ã®ãƒ€ã‚¤ãƒŠãƒŸãƒƒã‚¯ãƒ»ãƒªãƒ³ã‚¯ãƒ»ãƒ©ã‚¤ãƒ–ãƒ©ãƒª(ï¼¤ï¼¬ï¼¬)ä¸€å¼ ãƒžã‚¯ãƒ HAVE_SSE3 ã‚’å®šç¾©ã—ã¦
yass 2013/03/10
random

SFMT

xorshift

c

c++

java
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Replacing the Java random generator
yass 2013/03/10
"about 30% faster than the generator from java.util.random."

java

random

xorshift
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XORShift vs Random performance in Java
yass 2013/03/10
"7 times faster!"

xorshift

java

random
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