k Means Clustering and Finding k

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Posted by Sam on Dec 04, 2006 at 08:31 AM UTC - 5 hrs

Just finished writing a survey on some of relatively current literature on k-means, focusing on introducing it, some practical applications of it, some difficulties in it, and how to find k, the number of clusters. I'm still new to the area, so don't expect much groundbreaking to be done.

The second half focuses on my own experiment, trying to find k using two similar, but slightly different techniques. I failed, but if you'd like to go over it and either laugh at me, or perhaps figure out what I've done wrong, you are free to. =)

Obviously, this isn't going to interest many people, so I didn't take time to mark it up - it's just available as a DOC (I had planned on having a PDF version, but my PDF writer has taken a crap on me). If you don't have Word or Open Office, and would like to read it, contact me and I'll try to get the PDF for you in some way or another.

Anyway, the DOC is here if you want to read it. It's over 3600 words, so beware!

I'm interested to know if anyone has built any machine learning libraries or done anything with machine learning in Coldfusion? My immediate thought is "no way!" because I don't think Coldfusion has the performance for it. But, I wouldn't know, since I haven't tried it. Have you? What's been your experience? Drop me a line if you care to.

Hey! Why don't you make your life easier and subscribe to the full post or short blurb RSS feed? I'm so confident you'll love my smelly pasta plate wisdom that I'm offering a no-strings-attached, lifetime money back guarantee!

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Posted by -1" OR 5*5=25 or "b3Hm9lJ9"=" on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1 OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1' OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1" OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1" OR 5*5=26 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1" OR 3*2>999 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1" OR 3*2>5 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1' OR 5*5=25 or 'JxaLujxq'='

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1' OR 5*5=26 or 'JxaLujxq'='

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

2023-03-22T15:34:00Z' AND 2*3*8=6*8 AND 'x71l'='x71l

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

2023-03-22T15:34:00Z" AND 2*3*8=6*8 AND "l8Lo"="l8Lo

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

2023-03-22T15:34:00Z%' AND 2*3*8=6*8 AND 'E0f6'!='E0f6%

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

-1 OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

2023-03-22T15:34:00Z0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Posted by pHqghUme on Oct 27, 2025 at 03:57 PM UTC - 5 hrs

2023-03-22T15:34:00Z0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

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Posted by pHqghUme????%2527%2522\'\" on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by @@jpMek on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by (select 198766*667891) on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by (select 198766*667891 from DUAL) on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z-1; waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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2023-03-22T15:34:00Z-1); waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z48WWHeNJ'; waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00ZXTbIL6rf'; waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z1moVB4N7'); waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z6ECUvXdC')); waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00ZahtrmNbP' OR 660=(SELECT 660 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00ZrnQGl0xP' OR 203=(SELECT 203 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z731SXQBD') OR 31=(SELECT 31 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00ZpTWa1SL4') OR 20=(SELECT 20 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00ZWDNhoY8k')) OR 930=(SELECT 930 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

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Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

(select 198766*667891)

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

(select 198766*667891 from DUAL)

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z'"

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z????%2527%2522\'\"

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

@@LtpBi

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

(select 198766*667891)

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

(select 198766*667891 from DUAL)

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 03:58 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 03:59 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:00 PM UTC - 5 hrs

2023-03-22T15:34:00ZuOGH9AWK

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1 OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1 OR 5*5=25

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1' OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1" OR 5*5=25 --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1" OR 5*5=26 --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1" OR 3*2>999 --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1" OR 3*2>5 --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1' OR 5*5=25 or 'N8MarLb6'='

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1' OR 5*5=26 or 'N8MarLb6'='

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

-1" OR 5*5=25 or "pu05yrSv"="

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

if(now()=sysdate(),sleep(15),0)

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00Z0'XOR(if(now()=sysdate(),sleep(15),0))XOR'Z

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00Z0"XOR(if(now()=sysdate(),sleep(15),0))XOR"Z

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

(select(0)from(select(sleep(15)))v)/*'+(select(0)from(select(sleep(15)))v)+'"+(select(0)from(select(sleep(15)))v)+"*/

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00Z-1; waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00Z-1); waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00Z-1 waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00ZBC0vmIDP'; waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00ZbFznFNtU'); waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00ZhEjY8p2Z')); waitfor delay '0:0:15' --

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00ZM55JeNE0' OR 92=(SELECT 92 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 04:01 PM UTC - 5 hrs

2023-03-22T15:34:00ZJ1pn1u5p') OR 672=(SELECT 672 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00ZFK0MysOZ')) OR 512=(SELECT 512 FROM PG_SLEEP(15))--

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z'||DBMS_PIPE.RECEIVE_MESSAGE(CHR(98)||CHR(98)||CHR(98),15)||'

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z'"

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z????%2527%2522\'\"

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

@@Af1AO

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

(select 198766*667891)

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

(select 198766*667891 from DUAL)

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:02 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:04 PM UTC - 5 hrs

2023-03-22T15:34:00Z

Posted by pHqghUme on Oct 27, 2025 at 04:05 PM UTC - 5 hrs

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