YAGO2: A Spatially and Temporally Enhanced Knowledge Base from Wikipedia

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YAGO2 in Numbers

YAGO size for core and full extension
Type	# in YAGO2	# incl. GeoNames
Classes	365,372	365,372
Entities	2,648,387	9,756,178
Facts	124,333,521	447,470,256
Relations	104	114

Number of entities by class, percentage associated with existence time/location
Class	# Entities	% Existence Time	% Existence Location
People	872,155	80.46	-
Groups	316,699	38.46	24.03
Artifacts	212,003	58.91	1.78
Events	187,392	60.16	16.01
Locations	687,414	13.34	100
Other	372,724	24.99	2.25
Total	2,648,387	47.05	30.62

Evaluation of the YAGO2 Accuracy

We manually evaluated the correctness of 5864 facts. This resulted in a weighted average Wilson center of 95.4% (+- 3.69%). For detailed results of single techniques or relations, check below.

Detailed Evaluation Results of YAGO2

Relation	Evaluations	Correct	Ratio (%)	Wilson Center (%)	Wilson Width (%)
actedIn	69	69	100	97.36	2.64
created	94	94	100	98.04	1.96
dealsWith	79	77	97.47	95.27	4.04
diedIn	88	88	100	97.91	2.09
diedOnDate	79	79	100	97.68	2.32
directed	66	66	100	97.25	2.75
edited	35	35	100	95.05	4.95
endedOnDate	59	57	96.61	93.76	5.3
exports	113	107	94.69	93.22	4.32
graduatedFrom	57	57	100	96.84	3.16
happenedIn	51	51	100	96.5	3.5
happenedOnDate	86	86	100	97.86	2.14
hasAcademicAdvisor	55	55	100	96.74	3.26
hasArea	37	37	100	95.3	4.7
hasBudget	95	88	92.63	90.97	5.41
hasCapital	47	46	97.87	94.26	5.37
hasChild	75	72	96	93.76	4.87
hasCurrency	37	37	100	95.3	4.7
hasDuration	60	58	96.67	93.86	5.22
hasEconomicGrowth	75	72	96	93.76	4.87
hasExpenses	56	55	98.21	95.12	4.56
hasExport	61	60	98.36	95.5	4.21
hasFamilyName	125	121	96.8	95.4	3.34
hasGDP	93	86	92.47	90.79	5.52
hasGender	50	49	98	94.58	5.07
hasGini	56	56	100	96.79	3.21
hasGivenName	134	132	98.51	97.16	2.43
hasHDI	44	44	100	95.99	4.01
hasHeight	120	112	93.33	91.99	4.59
hasICD10	45	45	100	96.07	3.93
hasISBN	66	66	100	97.25	2.75
hasImdb	41	41	100	95.72	4.28
hasImport	61	61	100	97.04	2.96
hasInflation	66	65	98.48	95.82	3.91
hasLatitude	47	47	100	96.22	3.78
hasLongitude	37	37	100	95.3	4.7
hasMotto	59	58	98.31	95.35	4.35
hasMusicalRole	141	132	93.62	92.46	4.15
hasNumberOfPeople	63	62	98.41	95.63	4.09
hasOfficialLanguage	63	62	98.41	95.63	4.09
hasPages	109	106	97.25	95.64	3.42
hasPopulation	50	50	100	96.43	3.57
hasPopulationDensity	39	39	100	95.52	4.48
hasPoverty	53	52	98.11	94.86	4.8
hasPreferredMeaning	63	63	100	97.13	2.87
hasPreferredName	56	56	100	96.79	3.21
hasRevenue	127	120	94.49	93.18	4.12
hasTLD	55	55	100	96.74	3.26
hasUTCOffset	59	57	96.61	93.76	5.3
hasUnemployment	53	52	98.11	94.86	4.8
hasWebsite	59	59	100	96.94	3.06
hasWeight	64	63	98.44	95.69	4.03
hasWonPrize	61	61	100	97.04	2.96
holdsPoliticalPosition	81	78	96.3	94.2	4.53
imports	107	104	97.2	95.56	3.48
inLanguage	14	14	100	89.23	10.77
influences	58	57	98.28	95.28	4.42
isAffiliatedTo	50	49	98	94.58	5.07
isCalled	33	33	100	94.79	5.21
isCitizenOf	44	44	100	95.99	4.01
isInterestedIn	93	88	94.62	92.85	4.83
isKnownFor	38	38	100	95.41	4.59
isLeaderOf	56	56	100	96.79	3.21
isLocatedIn	51	51	100	96.5	3.5
isMarriedTo	58	58	100	96.89	3.11
isPoliticianOf	65	65	100	97.21	2.79
livesIn	56	56	100	96.79	3.21
means	112	107	95.54	94.03	4.05
owns	39	39	100	95.52	4.48
participatedIn	65	64	98.46	95.76	3.97
playsFor	71	71	100	97.43	2.57
produced	74	73	98.65	96.25	3.51
startedOnDate	66	64	96.97	94.39	4.78
subclassOf	314	295	93.95	93.42	2.67
type	208	205	98.56	97.68	1.83
wasBornIn	49	49	100	96.36	3.64
wasBornOnDate	56	56	100	96.79	3.21
wasCreatedOnDate	110	109	99.09	97.43	2.41
wasDestroyedOnDate	72	71	98.61	96.15	3.61
worksAt	64	64	100	97.17	2.83
wroteMusicFor	40	40	100	95.62	4.38

The raw evaluation results are available here.