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mogwaing id:mogwaing

k-meansã«é–¢ã™ã‚‹mogwaingã®ãƒ–ãƒƒã‚¯ãƒžãƒ¼ã‚¯ (6)

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mogwaing 2012/03/28
mahout

k-means

hadoop
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Streaming k-means approximation - tsubosakaã®æ—¥è¨˜
å®Ÿå®¶ã«å¸°çœä¸ï¼Œé›»è»Šã®ä¸ã§èªã‚“ã§ãŸè«–æ–‡ã®ç´¹ä»‹ã€‚ æ¦‚è¦ k-meansã¯ã‚¯ãƒ©ã‚¹ã‚¿ãƒªãƒ³ã‚°ãƒ†ã‚¯ãƒ‹ãƒƒã‚¯ã¨ã—ã¦éžå¸¸ã«åŸºæœ¬çš„ãªæ‰‹æ³•ã§ã‚ã‚‹ã€‚ ã—ã‹ã—ã€k-meansã§ã¯å…¨ãƒ‡ãƒ¼ã‚¿ã«å¯¾ã—ã¦ãƒ©ãƒ™ãƒªãƒ³ã‚°ã‚’è¤‡æ•°å›žç¹°ã‚Šè¿”ã™å¿…è¦ãŒã‚ã‚Šã€å…¨ãƒ‡ãƒ¼ã‚¿ç‚¹ã‚’ä¿å˜ã™ã‚‹å¿…è¦ãŒã‚ã‚‹ã€ãã“ã§k-meansã®å‡ºåŠ›ã§ã‚ã‚‹kå€‹ã®ã‚¯ãƒ©ã‚¹ã‚¿ä¸å¿ƒã‚’ãƒ¯ãƒ³ãƒ‘ã‚¹ã§è¦‹ã¤ã‘ã‚‹æ–¹æ³•ã‚’ææ¡ˆã™ã‚‹ã€‚ ã“ã“ã§å¾—ã‚‰ã‚Œã‚‹ã‚¯ãƒ©ã‚¹ã‚¿ä¸å¿ƒã¯æœ€é©å€¤ã¨æ¯”è¼ƒã—ãŸã¨ãã«O(log k)ã®è¿‘ä¼¼ã¨ãªã£ã¦ã„ã‚‹ ã‚¹ãƒˆãƒªãƒ¼ãƒ ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã«ã¤ã„ã¦ æœ¬è«–æ–‡ã§è¨€ã£ã¦ã„ã‚‹Streamingã®æ„å‘³ã¨ã—ã¦ã¯å…¥åŠ›ã‚’å‰ã‹ã‚‰è¦‹ã¦ã„ã£ã¦ã€ã™ã¹ã¦ä¿å˜ã—ãªã„ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®ã“ã¨ã‚’è¨€ã£ã¦ã„ã‚‹ã€‚ã„ã‚ã‚†ã‚‹ã‚ªãƒ³ãƒ©ã‚¤ãƒ³ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ã®ã‚ˆã†ã«å…¥åŠ›ãŒå…¥ã£ã¦ãã‚‹ãŸã³ã«ä½•ã‹ã—ã‚‰ã®çµæžœãŒå¾—ã‚‰ã‚Œã‚‹ã‚ã‘ã§ã¯ãªã„ã€‚ã¾ãŸï¼Œã‚¹ãƒˆãƒªãƒ¼ãƒ ã®é•·ã•ã¯æœ‰é™ã§ã‚ã‚‹äº‹ã‚’ä»®å®šã—ã¦ã„ã‚‹ã€‚ k-meansã¨ã¯ k-meansã¨ã¯ãƒ‡ãƒ¼ã‚¿ç‚¹ X = {x_1 , ... x_
mogwaing 2012/03/20
k-means#, Streaming k-means approximation

k-means
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Mahout Programming : K-Means Clustering - hamadakoichi blog
Mahout ã§ã®ãƒ‡ãƒ¼ã‚¿ãƒžã‚¤ãƒ‹ãƒ³ã‚°ã€‚mahout.clustering.kmeans ã‚’ä½¿ã£ãŸã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼åˆ†æžã‚’å®Ÿè£…ã—ã¦ã¿ãŸã€‚Mahoutã¯ã€Hadoopä¸Šã§å‹•ããƒ‡ãƒ¼ã‚¿ãƒžã‚¤ãƒ‹ãƒ³ã‚°ãƒ»æ©Ÿæ¢°å¦ç¿’ã®å„ç¨®ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ ãŒå®Ÿè£…ã•ã‚Œã¦ã„ã‚‹ãƒ©ã‚¤ãƒ–ãƒ©ãƒªã€‚ ã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼åˆ†æž ã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼åˆ†æžã®æ–¹æ³•è«–è‡ªä½“ã®å†…å®¹ã¯ä»¥ä¸‹ã®ã‚¨ãƒ³ãƒˆãƒªã«ã¾ã¨ã‚ã¦ã‚ã‚‹ã€‚ Rè¨€èªžãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ï¼š ã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼åˆ†æž - éšŽå±¤çš„ã‚¯ãƒ©ã‚¹ã‚¿ãƒªãƒ³ã‚° - hamadakoichi blog ç¬¬ï¼’å›žãƒ‡ãƒ¼ã‚¿ãƒžã‚¤ãƒ‹ãƒ³ã‚°+WEB å‹‰å¼·ä¼šï¼ æ±äº¬ (Tokyo.Webmining#2) ã‚’é–‹å‚¬ã—ã¾ã—ãŸ - ã€Œã¯ã˜ã‚ã¦ã§ã‚‚ã‚ã‹ã‚‹ Rè¨€èªžã«ã‚ˆã‚‹ã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼åˆ†æžã€ - hamadakoichi blog ç¬¬ï¼“å›ž ãƒ‡ãƒ¼ã‚¿ãƒžã‚¤ãƒ‹ãƒ³ã‚°+WEB å‹‰å¼·ä¼šï¼ æ±äº¬ (Tokyo.Webmining#3) ã‚’é–‹å‚¬ã—ã¾ã™ - hamadakoichi blog Rè¨€èªžãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ï¼š ã‚¯ãƒ©ã‚¹ã‚¿ãƒ¼åˆ†æž
mogwaing 2012/03/19
mahout

hadoop

k-means
ãƒªãƒ³ã‚¯
SumoBet88: Situs Judi Online Slot88 Terbaru Slot Gacor Hari Ini
Pemeliharaan Terjadwal: Crowd Play pada 2023-11-30 dari 7:00 AM sampai 2025-06-02 6:30 PM (GMT + 7). Selama waktu ini, Crowd Play permainan tidak akan tersedia. Kami memohon maaf atas ketidaknyamanan yang mungkin ditimbulkan. Pemeliharaan Terjadwal: ESports Bull pada 2024-05-20 dari 10:00 AM sampai 2025-06-03 11:00 AM (GMT + 7). Selama waktu ini, ESports Bull permainan tidak akan tersedia. Kami me
mogwaing 2009/03/17
clustering

k-means

to see
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K-meansæ³•ã«ã‚ˆã‚‹ã‚¯ãƒ©ã‚¹ã‚¿ãƒªãƒ³ã‚°ã®ã‚¹ãƒžãƒ¼ãƒˆãªåˆæœŸå€¤é¸æŠžã‚’è¡Œã†K-means++ - kaisehã®ãƒ–ãƒã‚°
K-meansæ³•ã¯ã€å…¥åŠ›ãƒ‡ãƒ¼ã‚¿ã‹ã‚‰Kå€‹ã®ãƒ©ãƒ³ãƒ€ãƒ ãªå€‹ä½“ã‚’åˆæœŸã‚¯ãƒ©ã‚¹ã‚¿ã®ä¸å¿ƒã¨ã—ã¦é¸æŠžã—ã€ä»¥é™ã€ã‚¯ãƒ©ã‚¹ã‚¿ã®é‡å¿ƒã‚’ç§»å‹•ã•ã›ã‚‹ã‚¹ãƒ†ãƒƒãƒ—ã‚’ç¹°ã‚Šè¿”ã™ã“ã¨ã§ã‚¯ãƒ©ã‚¹ã‚¿ãƒªãƒ³ã‚°ã‚’è¡Œã†éžéšŽå±¤çš„æ‰‹æ³•ã§ã™ã€‚K-meansæ³•ã¯ã‚·ãƒ³ãƒ—ãƒ«ã§é«˜é€Ÿã§ã™ãŒã€åˆæœŸå€¤ä¾å˜ãŒå¤§ãã„ã®ãŒå¼±ç‚¹ã§ã€ä¸é©åˆ‡ãªåˆæœŸå€¤é¸æŠžã‚’ã™ã‚‹ã¨é–“é•ã£ãŸè§£ã«åŽæŸã—ã¦ã—ã¾ã„ã¾ã™ã€‚ ä»¥ä¸‹ã¯ã€Introduction to Information Retrievalã®16ç« ã«å‡ºã¦ãã‚‹ä¾‹ã§ã™ã€‚ {d1, d2, ..., d6}ã‚’K=2ã§ã‚¯ãƒ©ã‚¹ã‚¿ãƒªãƒ³ã‚°ã™ã‚‹å ´åˆã€{{d1, d2, d4, d5}, {d3, d6}}ãŒå¤§åŸŸæœ€é©è§£ã§ã™ãŒã€åˆæœŸã‚¯ãƒ©ã‚¹ã‚¿ã®ä¸å¿ƒã‚’d2, d5ã§ä¸Žãˆã‚‹ã¨ã€{{d1, d2, d3}, {d4, d5, d6}}ã¨ã„ã†èª¤ã£ãŸè§£ã«åŽæŸã—ã¦ã—ã¾ã„ã¾ã™ã€‚ ã“ã®å•é¡Œã‚’æ”¹å–„ã™ã‚‹K-means++ã¨ã„ã†æ‰‹æ³•ã‚’è¦‹ã¤ã‘ãŸã®ã§ã€è©¦ã—ã¦ã¿ã¾ã—ãŸã€‚ K-means+
mogwaing 2009/01/15
clustering

k-means
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k-meansæ³• - æ©Ÿæ¢°å¦ç¿’ã®ã€Œæœ±é·ºã®æœWikiã€
k-meansæ³• (k-means method)â€ æ¬¡ã®ç›®çš„é–¢æ•°ã‚’æœ€å°åŒ–ã™ã‚‹åˆ†å‰²æœ€é©åŒ–ã‚¯ãƒ©ã‚¹ã‚¿ãƒªãƒ³ã‚°ã®ä»£è¡¨çš„æ‰‹æ³•ï¼Ž \[\mathrm{Err}(\{X_i\})=\sum_i^k\;\sum_{\mathbf{x}\in X_i}\;{\|\mathbf{x} - \bar{\mathbf{x}}_i\|}^2\] ãŸã ã—ï¼Œãƒ‡ãƒ¼ã‚¿é›†åˆ $X$ ã¯ï¼Œãƒ™ã‚¯ãƒˆãƒ«ã§è¡¨ç¾ã•ã‚ŒãŸãƒ‡ãƒ¼ã‚¿ $\mathbf{x}$ ã®é›†åˆï¼Ž ã‚¯ãƒ©ã‚¹ã‚¿ $X_i$ ã¯ï¼Œãƒ‡ãƒ¼ã‚¿é›†åˆã®ç¶²ç¾…çš„ã§äº’ã„ã«ç´ ãªéƒ¨åˆ†é›†åˆï¼Ž $\bar{\mathbf{x}}_i$ ã¯ $X_i$ ä¸ã®é‡å¿ƒ(ã‚»ãƒ³ãƒˆãƒã‚¤ãƒ‰ã¨ã‚‚ã„ã†)ï¼Ž $\|\cdot\|$ ã¯ãƒ¦ãƒ¼ã‚¯ãƒªãƒƒãƒ‰ãƒŽãƒ«ãƒ ï¼Ž â†‘ ã‚¢ãƒ«ã‚´ãƒªã‚ºãƒ â€ å…¥åŠ›ã¯ãƒ‡ãƒ¼ã‚¿é›†åˆ $X$ ã¨ã‚¯ãƒ©ã‚¹ã‚¿æ•° $k$ï¼ŒãŠã‚ˆã³æœ€å¤§åå¾©æ•° maxIterï¼Ž åˆæœŸåŒ–ï¼šãƒ‡ãƒ¼ã‚¿é›†åˆã‚’ãƒ©ãƒ³ãƒ€ãƒ ã« \(
mogwaing 2008/10/07
clustering

k-means

to see
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