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Climate Claim Checker

Dev claim · claim-2426 · #35 of 154

“"Twentieth century global warming did not start until 1910.”

Claim tags (sorted stems; highlighted when a passage shares them)

  • centuri
  • global
  • start
  • twentieth
  • warm

Annotators’ label

Refutes Run this claim live

The model’s verdict

The Transformer retrained from the notebook (the 2024 weights were never saved), shown three ways. The first is how the notebook evaluated it.

Notebook protocol

Dev claims predicted in batches of 16, in file order, from the 2024 retrieved evidence, as the notebook does.

Supports✗ differs from the label
Supports
60.3%
Refutes
34.0%
Not enough info
0.2%
Disputed
5.5%

One claim at a time

The same model run on a single claim, which is how the Try-it page runs it.

Supports✗ differs from the label
Supports
53.0%
Refutes
39.5%
Not enough info
4.4%
Disputed
3.1%

With gold evidence

Fed the human-annotated evidence instead of retrieved passages. This is the 'val accuracy' the training loop reports.

Supports✗ differs from the label
Supports
62.1%
Refutes
29.7%
Not enough info
0.4%
Disputed
7.8%

Retrieved vs gold evidence

Gold passages were picked by the dataset’s annotators. Retrieved passages are what the TF-IDF rule returned from all 1.19M passages. Switch between the submitted 2024 output and the re-runs.

2024 submission

The passages the team actually retrieved and submitted in 2024 (their saved output file). The file records only passage ids, so scores are recomputed with the submission rule.

Path
not recorded
Found
0 of 1 gold
P
0.00
R
0.00
F
0.00
  1. #1evidence-305970

    Starting in 2008, Heartland has organized conferences to question the scientific opinion of global warming.

    • warm (shared with the claim)
    • opinion
    • heartland
    • question
    • scientif
    • start (shared with the claim)
    • organ
    • global (shared with the claim)
    • confer
    cos
    0.594
    overlap
    0.600
    score
    1.194
    shared
    3

Gold evidence (1)

  1. evidence-697238

    The average global temperature on Earth has increased by about 0.8° Celsius (1.4° Fahrenheit) since 1880; Two-thirds of the warming has occurred since 1975, at a rate of roughly 0.15-0.20 °C per decade.

    • warm (shared with the claim)
    • averag
    • roughli
    • temperatur
    • celsiu
    • fahrenheit
    • decad
    • sinc