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Stable APIs, scalable storage, and external adapters

Contracts

eyeprocess_api_version()
object_schema("eye_dataset")
object_schema("eyeprocess_model")
validate_model_object(fit)
upgrade_eye_dataset(old_data)
upgrade_eyeprocess_model(old_fit)

Schemas lock required components, identifiers, return-value expectations, serialization compatibility, error classes, and scientific safeguards. eyeprocess_deprecation() records replacement and removal horizons.

Partitioned storage

spec <- partition_eye_storage(
  by = c("participant_id", "session_id", "recording_id"),
  format = "parquet",
  compression = "zstd",
  max_rows = 1000000L
)

store <- write_partitioned_eye_storage(x, "analysis/store", spec)
query_eye_storage(
  store,
  table = "gaze_samples",
  filters = list(participant_id = c("P001", "P002")),
  columns = c("participant_id", "recording_id", "time", "x", "y")
)
validate_eye_storage_metadata(store)
detect_corrupt_partitions(store)
storage_transaction_manifest(store)

Writes use a staging directory followed by an atomic commit. Every partition has row count, byte count, partition keys, and a fingerprint. CSV and RDS fallbacks preserve functionality when Arrow is unavailable.

Schema migration and benchmarks

migrate_eye_storage_schema(store, "analysis/store-v2", target_version = "2.0.0")
benchmark_eye_storage(x, formats = c("rds", "csv", "parquet"))

External engines

external_model_engines()
fit_mirt_adapter(response_matrix, model = 1, purpose = "unidimensional item calibration")
fit_tam_adapter(response_matrix, purpose = "Rasch sensitivity analysis")
fit_brms_adapter(score ~ dwell + (1|participant_id) + (1|item_id), trials, purpose = "Bayesian explanatory model")
fit_lnirt_adapter(list(Y = response_matrix, RT = rt_matrix), purpose = "joint accuracy-RT comparison")

Every adapter returns one of fitted, not_available, or failed. It does not install packages, select models, or reinterpret outputs automatically.

These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.