Yosemite Decimal System
E278667
The Yosemite Decimal System is a widely used North American rating scale that classifies the difficulty and technical challenge of hikes, scrambles, and rock climbs.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Yosemite Decimal System canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T2590227 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Yosemite Decimal System Context triple: [The Dawn Wall, difficultySystem, Yosemite Decimal System]
-
A.
El Capitan Meadow
El Capitan Meadow is a scenic, open grassy area in Yosemite National Park offering iconic views of the granite monolith El Capitan and surrounding valley cliffs.
-
B.
Gateway to Yosemite
Gateway to Yosemite is a nickname for the city of Merced, California, highlighting its role as a primary access point to Yosemite National Park.
-
C.
Sawtooth
Sawtooth is the internal codename for the efficiency (little) CPU cores used in Apple’s A16 Bionic chip.
-
D.
Issaquah Alps trail system
The Issaquah Alps trail system is a network of hiking trails in the forested hills near Issaquah, Washington, popular for outdoor recreation and scenic views close to the Seattle metropolitan area.
-
E.
Walker Pass
Walker Pass is a historic mountain pass in California’s southern Sierra Nevada that serves as a key route between the Central Valley and the Mojave Desert.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Yosemite Decimal System Target entity description: The Yosemite Decimal System is a widely used North American rating scale that classifies the difficulty and technical challenge of hikes, scrambles, and rock climbs.
-
A.
El Capitan Meadow
El Capitan Meadow is a scenic, open grassy area in Yosemite National Park offering iconic views of the granite monolith El Capitan and surrounding valley cliffs.
-
B.
Gateway to Yosemite
Gateway to Yosemite is a nickname for the city of Merced, California, highlighting its role as a primary access point to Yosemite National Park.
-
C.
Sawtooth
Sawtooth is the internal codename for the efficiency (little) CPU cores used in Apple’s A16 Bionic chip.
-
D.
Issaquah Alps trail system
The Issaquah Alps trail system is a network of hiking trails in the forested hills near Issaquah, Washington, popular for outdoor recreation and scenic views close to the Seattle metropolitan area.
-
E.
Walker Pass
Walker Pass is a historic mountain pass in California’s southern Sierra Nevada that serves as a key route between the Central Valley and the Mojave Desert.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
climbing grade system
ⓘ
hiking difficulty rating system ⓘ |
| alsoKnownAs | YDS ⓘ |
| appliesTo |
hikes
ⓘ
scrambles ⓘ technical rock climbs ⓘ |
| assesses | overall technical challenge of a route ⓘ |
| characterizes |
exposure
ⓘ
need for protection ⓘ technical difficulty ⓘ |
| classificationBasis | hardest move or short sequence on a route ⓘ |
| comparedWith |
British traditional climbing grade system
ⓘ
French sport climbing grade system ⓘ UIAA climbing grade system ⓘ |
| countryOfOrigin |
United States
ⓘ
linked to:
United States of America
|
| definesScaleFrom | Class 1 ⓘ |
| definesScaleTo | Class 5 ⓘ |
| developedFrom | Sierra Club grading practices ⓘ |
| doesNotDirectlyMeasure |
objective hazards like rockfall
ⓘ
required physical endurance ⓘ |
| goal | provide consistent difficulty ratings across routes ⓘ |
| hasComponent |
Class 1
ⓘ
Class 2 ⓘ Class 3 ⓘ Class 4 ⓘ Class 5 ⓘ |
| hasNotableFeature |
decimal subdivisions within Class 5
ⓘ
focus on free climbing difficulty ⓘ |
| influenced |
guidebook route ratings in the United States
ⓘ
sport climbing grading in North America ⓘ |
| isCommonStandardIn |
Canadian climbing guidebooks
ⓘ
United States climbing guidebooks ⓘ |
| isSubsetOf | climbing grading systems ⓘ |
| originatedIn | Yosemite National Park ⓘ |
| relatedTo |
protection rating systems
ⓘ
seriousness ratings for climbs ⓘ |
| scope | single-pitch and multi-pitch routes ⓘ |
| standardizedBy | American climbing community ⓘ |
| timePeriod | mid-20th century ⓘ |
| usedBy |
guidebook authors
ⓘ
hikers ⓘ mountaineers ⓘ rock climbers ⓘ |
| usedFor |
hiking difficulty classification
ⓘ
rock climbing difficulty classification ⓘ scrambling difficulty classification ⓘ |
| usedIn | North America ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Yosemite Decimal System Description of subject: The Yosemite Decimal System is a widely used North American rating scale that classifies the difficulty and technical challenge of hikes, scrambles, and rock climbs.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.