Core Data Models Tutorial

cds.core defines the Domain, Hypothesis, and HypothesisStatus types used across CDS — particularly by the hypothesis engine.

1. Domains

from cds.core import Domain

for d in Domain:
    print(d.name, d.value)

2. Building a Hypothesis

from cds.core import Domain, Hypothesis, HypothesisStatus

h = Hypothesis(
    id="H-001",
    domain=Domain.COSMOLOGY,
    research_question="Why is the Hubble expansion accelerating?",
    statement="A cosmological constant (Λ) drives late-time acceleration.",
    status=HypothesisStatus.PROPOSED,
    confidence=0.62,
    assumptions=["GR holds on cosmological scales"],
    predictions=["(m-M) vs z bends downward"],
    tags=["dark-energy"],
)
print(h.to_markdown())

The same record type is what cds.hypothesis.generate_hypotheses returns — so you can inspect, persist, or feed it to the evaluator.

Run the full demo with python examples/core_demo.py.