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Old 2003-09-15, 21:35   #1
Prime95
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Default Duplicate userids

Can our data analysis guru come up with a list of userids that represent the same person?

Quite simply, if an LL test is listed with the same shift count and program version it is very likely that the result was submitted using two different userids.
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Old 2003-09-16, 05:31   #2
garo
 
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Another way of doing this would to look at LUCAS_V.TXT files from successive weeks to see what users changed their user ids. Unless you don't need to keep track of people changing their User IDs.
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Old 2003-09-16, 17:46   #3
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Look for lines in LUCAS_V.TXT that have the same exponent, program version, residue and shift count (but ignore all lines with blank or zero shift count), but different user.

For all such matches, print both user+computer_id pairs and a count of how many times they match.

[Edit:
The higher the count (first column) the more confident we are that it really is the same user. If the count is only 1, we could perhaps have a case of coincidental nonzero shift counts for the same exponent. That seems unlikely, but on the other hand there appear to be three cases of coincidental zero shift counts for the same exponent (see a later post), so it seems that the same coincidence could also happen for nonzero shift counts.]



Here's what I get:

Code:
 1	Atom,232342			5049,232342
 9	Kot,Batlord			 Kot,Batlord
 6	MDGeist,Dubloon			Brap_On,Connie_RR
 1	Nomads,COW_00189		Blues_Bear,COW_00189
 1	PrimeHunters,JD_WP3_600		JD_WP3_600,1234
 1	S01965,				LM4,
 1	S108289,C6751BCCA		S01214,006
 2	S108289,C6751BCCA		S01214,011
 1	S13679,james_goen		S13293,jamey_rankin
 1	S15427,CEBD38419		S14686,CC4ADF0F2
 1	S17163,D2_p9_24			MV_,DB4
 1	S17361,C4FD2267B		S15907,C4FD2267B
 1	S24542,C711CC718		S24017,C711CC718
 3	S24542,CD4D77E7D		S24017,CD4D77E7D
 7	S31850,RAY			RayDK,DUALMP
 1	S38938,				MarkHolmes,Blue3
 1	S46739,CF61699A0		S110360,CE82044FC
 1	S47388,AMD500			JT99,
 1	S49787,C37A1595B		Krystian,
 1	S60751,C330C31D7		S60544,C330C31D7
 1	S60850,C330C31D7		S60544,C330C31D7
 1	S60850,C330C31D7		S60751,C330C31D7
 1	S60947,C330C31D7		S60544,C330C31D7
 1	S60947,C330C31D7		S60751,C330C31D7
 1	S60947,C330C31D7		S60850,C330C31D7
 1	S61224,C330C31D7		S60544,C330C31D7
 1	S61224,C330C31D7		S60751,C330C31D7
 1	S61224,C330C31D7		S60850,C330C31D7
 1	S61224,C330C31D7		S60947,C330C31D7
 1	S61318,C330C31D7		S60544,C330C31D7
 1	S61318,C330C31D7		S60751,C330C31D7
 1	S61318,C330C31D7		S60850,C330C31D7
 1	S61318,C330C31D7		S60947,C330C31D7
 1	S61318,C330C31D7		S61224,C330C31D7
 1	S61502,C330C31D7		S60544,C330C31D7
 1	S61502,C330C31D7		S60751,C330C31D7
 1	S61502,C330C31D7		S60850,C330C31D7
 1	S61502,C330C31D7		S60947,C330C31D7
 1	S61502,C330C31D7		S61224,C330C31D7
 1	S61502,C330C31D7		S61318,C330C31D7
 1	S61566,C330C31D7		S60544,C330C31D7
 1	S61566,C330C31D7		S60751,C330C31D7
 1	S61566,C330C31D7		S60850,C330C31D7
 1	S61566,C330C31D7		S60947,C330C31D7
 1	S61566,C330C31D7		S61224,C330C31D7
 1	S61566,C330C31D7		S61318,C330C31D7
 1	S61566,C330C31D7		S61502,C330C31D7
 2	S62971,JRZdesk			MitelEnt,JRZdesk
13	S63679,CADA2CBB5		Delhaes,Obelix
13	S64610,C450E5EC9		Delhaes,Obelix
14	S64610,C450E5EC9		S63679,CADA2CBB5
 1	S64745,Elgornd			Malloe,Elgornd
 6	S68739,C3EA1D889		PLATHEY,C3EA1D889
 8	S69266,C9C1D59C4		S03154,
10	S69266,C9C1D59C4		S03154,C0DD2F91B
 1	S72836,C625CF022		S40636,C625CF022
23	S74283,C2B0DBE01		S23596,C6DC7E7FF
 1	S77825,C409B1F14		S101423,C56E14F75
 1	S79294,CF4AC3A41		Fusion_power,
 4	S79704,C92CF4964		RB3,C92CF4964
 1	S80170,C2E7C9829		S29882,C094B553D
 2	S81103,Paz-P733			S61685,Paz-P733
 2	S81261,PIII-800			Philippe.Rose,Philippe
 8	S83216,Robin_Hood		S04590,Robin_Hood
 1	S88430,C1D8A72C3		S79268,C1FBA9CB9
 2	S88989,C6E86602D		S42987,C6E86602D
 8	S89113,Christian		Kosmologika,Christian
 2	S93064,C4F505E0C		MKilfoyle,Pecos
12	S97997,C30047531		S18892,TriTown3
 1	S99081,C02A2FA43		Ethan,P3-800
 1	Sage2,C08E855C7			S88495,C8E831E06
 3	Starchild,Hell_Server		S74996,Hell_Server
 1	Starchild,Laura_F		S74996,Hell_Server
 3	Team_Prime_Rib,Glamdring	S66724,Glamdring
 4	Team_Prime_Rib,Hades_au_D1	S66571,C24F8D016
 5	Team_Prime_Rib,Hades_au_P04	S106736,Hades_au_P4e
65	Team_Prime_Rib,Hades_au_P4e	S106736,Hades_au_P4e
11	Team_Prime_Rib,Odessit4		S73977,Odessit4
 1	Team_Prime_Rib,Stormblad26	S73217,Stormblad26
 2	Team_Prime_Rib,kvizbar_w	S85061,C9C900B43
 1	Teradoc,Teradoc			Ruppi,Ruppi
 2	TonyG,C155FD7CA			S112696,C09E08E00
10	TonyG,new_300			S112696,C09E08E00
 2	TonyG,pent166			S112696,C09E08E00
 3	akohler,ak_foley1		S12550,ak_foley1
13	asau,asau			S66756,CA97E1677
 2	asau,gasau			S66756,CA97E1677
 2	beth133,P108-05			S68643,P108-05
 1	chazhughes,			ChazHughes,Home
 2	chris65,urukhai			S72279,urukhai
 2	cielava,CE8187096		S72001,CE8187096
 5	cng,				S93724,C4159C890
18	cng,CAA78DC40			S93724,C4159C890
 1	crossmamy,C330C31D7		S60544,C330C31D7
 1	crossmamy,C330C31D7		S60751,C330C31D7
 1	crossmamy,C330C31D7		S60850,C330C31D7
 1	crossmamy,C330C31D7		S60947,C330C31D7
 1	crossmamy,C330C31D7		S61224,C330C31D7
 1	crossmamy,C330C31D7		S61318,C330C31D7
 1	crossmamy,C330C31D7		S61502,C330C31D7
 1	crossmamy,C330C31D7		S61566,C330C31D7
 1	dealcomp,riverdale		NumMunch,riverdale-P3
 1	dmitr0s,DMITR0S			S75191,DMITR0S
 1	drama,seven			S68057,CC40A1AE3
 2	druryp,W6125185			S92509,A18130
 6	druryp,W6125185b		S92509,A18130
 3	enrico.farina,CF85C7753		S46556,CF85C7753
 1	extropians,			S45148,
 1	foxkid,Ellen			S122496,CEDC0E289
 1	goldy,athlon700			S101043,athlon700
 2	jabba,				idledime,CEB49DBBF
 1	johnsonlau,CEBF0B1E1		S120057,C0E29248F
 1	kcjaget,Wendy			S94904,Wendy
 1	kcjaget,wee			S94904,Wendy
 1	kcukier,CA39EFC14		S09672,mojP4
16	ken-ishi,			S87621,C57C94E15
 6	ken-ishi,CDD217016		S87621,C57C94E15
 1	macwang,P42G			S82385,P42G
31	mandras,kefir			S115663,CA7D99FA6
 1	mansion,higradeaxion		S113347,C582675BE
 3	mansion,higradenotin		S113347,C582675BE
 1	markcross,C330C31D7		S60544,C330C31D7
 1	markcross,C330C31D7		S60751,C330C31D7
 1	markcross,C330C31D7		S60850,C330C31D7
 1	markcross,C330C31D7		S60947,C330C31D7
 1	markcross,C330C31D7		S61224,C330C31D7
 1	markcross,C330C31D7		S61318,C330C31D7
 1	markcross,C330C31D7		S61502,C330C31D7
 1	markcross,C330C31D7		S61566,C330C31D7
 1	markcross,C330C31D7		crossmamy,C330C31D7
 7	mdelpin,MDelPin_Work		S80242,MDelPin_Work
 1	mhoney,a950			S70366,C9FCCE56E
 2	mjanderso,			Team_Prime_Rib,SlashDude_Q2
 2	mskidmore,HP_1.5_GHz		S77919,HP_1.5_GHz
 6	mullen1,Combustion		S108016,C48FA3EE3
 1	nhandriana,delli3500		nhandrianaA01,delli3500
 2	nuutti,hima			Remes,C1974E9C8
 6	oswald,Roy			S59777,littleone
 9	pcr,1				S102970,CA29928BB
 1	pj,tyo				pejj,tyo
 1	pm107,vault			S116016,vault
 5	pneylan,compaq			S116834,compaq
 5	preiashannara,preiabart2	Bart_VDB,Dell
 1	primemasta,Go_Faster		PathFinder,
 1	primemasta,USS_Hawkeyed		mapleson,
 1	primemasta,USS_Hawkeyed		mapleson,USS_Intrepid
 1	primenator,NEO-junior		S82938,CBC2EAE5E
 1	rei3300,rei			S115910,C78DBFB9F
 3	rherke,				porter,
 1	rossum48,Della			S81859,C72780FE1
 1	ruudv,Dexters_lab		jumi,Dexters_lab
 2	s08978,				molive,
 1	sawadey,			muppatz,
 1	schmeller,OF01			Austria,CBB525C5C
 1	sgburston,iggy			S103936,iggy
 3	shaneamy,P600A			S66931,P600B
25	shaneamy,P600B			S66931,P600B
15	shaneamy,amd			Malfoy,Draco
35	sirlpr,sirl1			S123244,sirl1
 1	spotocny,			lycorn,
 6	stigmv,Aragorn			S81847,Aragorn
 1	szeva,eva			SzEva,eva
 1	thomasbudd,C45BDD643		S56906,Toms-Work
 1	thomasbudd,TFB-Duron		S89109,TFB-Duron
 1	tjkwak,1234			S94849,CB97936BB
 1	trebinor,450_PIII		Mathluver,
 2	trebinor,450_PIII		Mathluver,450_PIII
 2	wethepurple,mycomp		Team_Prime_Rib,kmd01
 1	whitec2,work2			S19460,CFE0F21C3
 1	zanardo,solfarma		nastromagario,Thunderbird
 4	zedee,celeronA464		S76399,celeronA464

Note that the second "Kot" has an extra space at the beginning.

Last fiddled with by GP2 on 2003-09-16 at 19:10
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Old 2003-09-16, 18:04   #4
GP2
 
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The shift count values in LUCAS_V.TXT range from 0 to 33,137,623. I'm not sure how randomly these are selected and over what range. Can we be relatively sure that we'd never get the same shift count for the same exponent by coincidence?
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Old 2003-09-16, 18:41   #5
GP2
 
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Suppose we relax the previous criteria to allow lines where the shift count is 0 (but not blank), but still require identical program versions.

A few lines in the above listing increase their counts by one, and the following new lines would appear:

Code:
 1	Rosencrantz,Mark		Guildenstern,
 1	TonyG,Donna			S112696,C09E08E00
 1	k5gj,3				PrimeMinister,Dell_XPS166s
 1	minkemaf,			FM6,
 1	rodspade,rods_p6_200		Guildenstern,
 1	rodspade,rods_p6_200		Rosencrantz,Mark
 1	s03170,				S03170,Daniel

If we further relax the criteria to look at cases where the program versions may differ, we only get the following five pairs to consider:

Code:
5937551,SW,ifl2,WT2,276494205213E1C4,0,80000000
5937551,beejaybee,alfalfa,G29,276494205213E1C4,0,

6064511,noelcase,NTNB01,WU1,400935412F3405AF,0,80000000
6064511,nollaig,SCADA2,WU5,400935412F3405AF,0,80000000

6619927,CHOPtest,checkie,WT1,F14C1A6D8482823F,0,80000000
6619927,nephi,2,WU5,F14C1A6D8482823F,0,80000000

7231883,Austria,pc13,WV5,78CA0DAC7DDD211F,0,80000000
7231883,Casper,CC99A7DE6,WV1,78CA0DAC7DDD211F,0,80000000

7233739,nhandriana,if219-04,WX2,C2FDCA9505CC065A,2804180,001E0000
7233739,nhandrianaA01,delld233,WX1,C2FDCA9505CC065A,2804180,001C0000
The first one is obviously bogus, since one result is returned with mprime and the other with Glucas.

The next 3 are also fairly dubious, yet they have the same shift count (which happens to be zero). This seems to be coincidence, but then would it also be possible for two nonzero shift counts to also coincidentally match? What causes the program to choose a particular shift count, and when does it choose zero? How random is the selection of which shift count to use?

The final pair of the five looks like the same user, and in fact we already knew nhandriana,delli3500 = nhandrianaA01,delli3500 based on nonzero-shift-count information.

Last fiddled with by GP2 on 2003-09-16 at 18:53
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Old 2003-09-16, 19:03   #6
Complex33
 
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:surprised One of those is mine and I asked about it several months ago when it happened. I was messing with the prime.ini file and my user id got deleted I believe which caused the program to choose a new random one and then began re-submitting exponents from my results.txt file. I asked at the time because the exponent status on primenet changed to be that of a double check while I had performed a first time LL. Prime95 said it shouldn't be a problem at the time.

Complex33
Quote:
I was moving some files around including Prime95 and inadvertently had prime.ini and local.ini in a different directory than the executable and prime.log. When Prime95 was restarted in created a new account and resubmitted all the work for that computer in the prime.log file. It did not affect credit to my account but now shows up in the cleared.txt file as double checks under the newly created account.
Prime95
Quote:
This shouldn't cause any problems when merged into the main database.
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Old 2003-09-16, 19:09   #7
GP2
 
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Here's something else odd...

In the Sept 1 2003 data files, all entries for GW were replaced with username S122546. But in the Sept 9 2003 data, it reverted back to GW.
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Old 2003-09-16, 20:18   #8
Prime95
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Quote:
Originally posted by GP2
In the Sept 1 2003 data files, all entries for GW were replaced with username S122546. But in the Sept 9 2003 data, it reverted back to GW.
The GW userid is special. The owner has special clout to make sure that if it accidentally changes, it reverts back to what it should be!
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Old 2003-09-16, 20:20   #9
Prime95
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Quote:
Originally posted by Complex33
:surprised One of those is mine and I asked about it several months ago
These duplicate entries aren't causing any problem - except for some needless bloat in the database.
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Old 2003-09-16, 20:23   #10
Prime95
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Quote:
Originally posted by GP2
What causes the program to choose a particular shift count, and when does it choose zero? How random is the selection of which shift count to use?
The shift count is randomly selected from 0 to exponent-1.

The reason zero is over-represented is that any exponents started prior to version 17 and completed with a later version report a shift count of zero.
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Old 2003-09-17, 02:20   #11
Joe O
 
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Default ID Triplets

Does anyone care to try to identify the triplets, quadruplets, etc?
e.g.
Code:
13	asau,asau			S66756,CA97E1677
 2	asau,gasau			S66756,CA97E1677
are probably one person, and
Code:
 1	S60751,C330C31D7		S60544,C330C31D7
 1	S60850,C330C31D7		S60544,C330C31D7
 1	S60850,C330C31D7		S60751,C330C31D7
are also probably one person!
Here's another one:
Code:
 1	Rosencrantz,Mark		Guildenstern,
 1	rodspade,rods_p6_200		Guildenstern,
 1	rodspade,rods_p6_200		Rosencrantz,Mark
and another:
Code:
 1	primemasta,USS_Hawkeyed		mapleson,
 1	primemasta,USS_Hawkeyed		mapleson,USS_Intrepid
and yet another:
Code:
 3	Starchild,Hell_Server		S74996,Hell_Server
 1	Starchild,Laura_F		S74996,Hell_Server
and last but not least:
Code:
 1	S108289,C6751BCCA		S01214,006
 2	S108289,C6751BCCA		S01214,011
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