publish v0.2 real-data preview

README.md

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+---
+pretty_name: "LAFC-Evict v0.2 Real-Data Preview"
+license: "cc0-1.0"
+tags:
+- "tabular"
+- "caching"
+- "cache-eviction"
+- "learning-augmented-algorithms"
+- "counterfactual-supervision"
+- "pandas"
+- "mlcroissant"
+- "parquet"
+- "preview"
+- "real-data-preview"
+task_categories:
+- "tabular-regression"
+- "tabular-classification"
+size_categories:
+- "1M<n<10M"
+configs:
+- config_name: "cross_family_evict_value_v1"
+  data_files:
+  - split: "train"
+    path: "data/cross_family_evict_value_v1.parquet"
+- config_name: "objective_ablation_scalar"
+  data_files:
+  - split: "train"
+    path: "data/objective_ablation_scalar.parquet"
+---
+# LAFC-Evict v0.2 Real-Data Preview
+
+This is a local staging release for a proposed Hugging Face dataset repository `SoroushVahidi/lafc-evict`. It has not been uploaded.
+
+Version history:
+
+- `SoroushVahidi/lafc-evict-sample` v0.1 synthetic sample: publication workflow dry run built from `examples/tiny_candidate_rows.csv`.
+- v0.1-open / current-contract preserved: historical real release artifacts retained under local `release/` namespaces.
+- v0.2 preview: small real derived-data preview using Wikimedia pageview-derived rows only.
+- Future v1.0/full release: broader curated dataset after storage, licensing, and provenance review.
+
+The preview contains derived candidate-row features and counterfactual labels. It does not include raw trace rows, raw Wikimedia page titles, machine-local paths, model files, or experiment logs. Object identifiers are deterministic release pseudonyms.
+
+Read `dataset_card.md`, `RELEASE_NOTES_v0_2.md`, `metadata/release_manifest.json`, `metadata/sampling_manifest.json`, and `metadata/provenance_summary.csv` before upload consideration.

RELEASE_NOTES_v0_2.md

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+# v0.2 Preview Release Notes
+
+This proposed update introduces the first real-data preview in the `SoroushVahidi/lafc-evict` Hugging Face dataset repository while preserving the existing synthetic-only `SoroushVahidi/lafc-evict-sample` repository as historical publication workflow evidence.
+
+Changes:
+
+- Adds real Wikimedia pageview-derived candidate-row examples.
+- Preserves v0.1 synthetic sample history in the separate sample repository.
+- Preserves v0.1-open / current-contract preserved real release artifacts in the canonical local repository.
+- Uses two Parquet configs: `cross_family_evict_value_v1` and `objective_ablation_scalar`.
+- Pseudonymizes object identifiers.
+- Excludes Brightkite, CitiBike, Twemcache, MetaKV, MetaCDN, and CloudPhysics until final redistribution review.
+
+The preview uses Wikimedia Analytics pageview data documented as CC0. Attribution and non-endorsement wording are included in the dataset card and provenance metadata.

data/cross_family_evict_value_v1.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:38ae87b88bf8367d41f0dc8638eaf12fa5416b559d24c7023f39b9f1c7b6bb8f
+size 66875136

data/objective_ablation_scalar.parquet

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+version https://git-lfs.github.com/spec/v1
+oid sha256:90a2cb7913e234323190810906644e110f5c9ebeaaea47203857f61b822757f9
+size 73230958

dataset_card.md

@@ -0,0 +1,29 @@
+# LAFC-Evict v0.2 Real-Data Preview
+
+This is a small real-data preview for the proposed `SoroushVahidi/lafc-evict` Hugging Face dataset repository.
+
+The preview includes only Wikimedia pageview-derived rows. Upstream pageviews are public Wikimedia Analytics datasets available under the Creative Commons CC0 1.0 public domain dedication. The rows here are derived cache-eviction supervision examples, not raw pageview logs. Object identifiers are pseudonymized.
+
+The existing `SoroushVahidi/lafc-evict-sample` v0.1 repository remains a synthetic workflow dry run and is not suitable for scientific benchmarking. This v0.2 preview is intended to demonstrate the real derived schema at small scale. It is not the full benchmark release.
+
+## Configs
+
+- `cross_family_evict_value_v1`: finite-horizon eviction-loss candidate rows from the corrected cross-family dataset.
+- `objective_ablation_scalar`: scalar multi-target objective-ablation candidate rows.
+
+## Wiki2018 Provenance and Attribution
+
+Known factual provenance: this preview uses derived rows generated from the `wiki2018` family, described locally as a Wikimedia public pageviews derived proxy trace with upstream source `https://dumps.wikimedia.org/other/pageviews/`. Wikimedia's pageviews readme states that pageview statistics are compiled using the current pageview definition and that all Analytics datasets are available under the Creative Commons CC0 dedication. The preview is not a redistribution of raw pageview dumps and does not expose raw page titles.
+
+Attribution wording: LAFC-Evict v0.2 preview includes derived cache-eviction supervision examples generated from Wikimedia public pageview data. Wikimedia pageview data is made available by the Wikimedia Foundation at `https://dumps.wikimedia.org/other/pageviews/` under the Creative Commons CC0 1.0 public domain dedication. Wikimedia and the Wikimedia Foundation do not endorse this derived dataset.
+
+License/terms statement: the upstream Wikimedia Analytics pageview data is CC0. This derived LAFC-Evict preview is released under CC0 1.0 as a dataset. Attribution is included as scholarly provenance and to avoid user confusion, not because CC0 imposes an attribution requirement.
+
+Caveat: this statement is based on Wikimedia's public documentation and is not legal advice.
+
+## Limitations
+
+- Only `wiki2018` is included.
+- Brightkite, CitiBike, CloudPhysics, MetaCDN, MetaKV, and Twemcache are excluded pending redistribution review.
+- This package is a preview, not the full LAFC-Evict release.
+- Dataset metadata uses `license: cc0-1.0`; code in the canonical publication repository remains separately licensed.

metadata/checksums.sha256

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+c87ac60766e6bc78fda04d3dd338cf44ff1ae760a6aab17aa3ffd520212c178d  README.md
+6597f4db43e5a2ef79da7f8193d2fd72bda8f4c2e2e0b9ea93fbf458e1a7e374  RELEASE_NOTES_v0_2.md
+38ae87b88bf8367d41f0dc8638eaf12fa5416b559d24c7023f39b9f1c7b6bb8f  data/cross_family_evict_value_v1.parquet
+90a2cb7913e234323190810906644e110f5c9ebeaaea47203857f61b822757f9  data/objective_ablation_scalar.parquet
+367ffd91887afabbb3cb5169ec7efa9ce248b547b26e2d74ddb446da69b01298  dataset_card.md
+64cff7ee03f4ee8ce3f2959ed7f88e1ff6c308ab43efeaf2bf1c5f46fb72be0d  metadata/lafc_evict_v0_2_preview_families.json
+f3b5e738189be705286264f2c3e414f66aea182ccad2b11541d28bcd71c47221  metadata/provenance_summary.csv
+86596ec82f427e4c13fb3af32f1cb39b09997c8c0dd940eec2a2e9cad33eed83  metadata/release_manifest.json
+ba70c79ff4a39e8415913ff1bd54aa8c4dcb5cb7dc2880460143277a3dab539e  metadata/sampling_manifest.json
+54cdde9f8aa60639af0c653570051f0e66c5beb44c213784b45f0be87623a199  metadata/schema.json
+49fb8eb3f7a3eeae5cf509025b5759003751abf57b629f033cc9ebbb65639151  metadata/security_scan.json
+422a8e0dae8dd0662659b4b493d32d5d1c08dea4bd8efa4627b5f6c807deba04  metadata/source_family_registry.yaml
+5026d670bb4e4bcc11db470be2234081d7ba7230dfe602eff163bc668ea5bc4c  metadata/statistics.json
+5aa70ab1b7f366128e0f30874b5a0ac20aa9e20f6ccabfacd3e53b898d85fb00  metadata/validation_report.md

metadata/lafc_evict_v0_2_preview_families.json

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+{
+  "excluded_families": [
+    {
+      "family": "brightkite",
+      "reason": "UNCLEAR redistribution and privacy status for public v0.2 preview"
+    },
+    {
+      "family": "citibike",
+      "reason": "UNCLEAR redistribution and privacy status for public v0.2 preview"
+    },
+    {
+      "family": "cloudphysics",
+      "reason": "UNCLEAR redistribution status for public v0.2 preview"
+    },
+    {
+      "family": "metacdn",
+      "reason": "UNCLEAR redistribution status for public v0.2 preview"
+    },
+    {
+      "family": "metakv",
+      "reason": "UNCLEAR redistribution status for public v0.2 preview"
+    },
+    {
+      "family": "twemcache",
+      "reason": "UNCLEAR redistribution status for public v0.2 preview"
+    }
+  ],
+  "release_scope": "v0.2-preview",
+  "selected_families": [
+    {
+      "family": "wiki2018",
+      "redistribution_status": "CC0_ANALYTICS_DATA_PUBLIC_DERIVED_PREVIEW_OK",
+      "public_upload_status": "APPROVED_WITH_ATTRIBUTION_AND_CAVEAT",
+      "license_basis": "Wikimedia pageviews readme and Analytics API access policy identify Analytics datasets/pageview data as CC0."
+    }
+  ],
+  "warning": "This selector output is a release-governance aid based on repository metadata. It is not legal advice."
+}

metadata/provenance_summary.csv

@@ -0,0 +1,8 @@
+family,source_name,source_url,redistribution_status,included,reason
+wiki2018,Wikimedia public pageviews derived proxy trace,https://dumps.wikimedia.org/other/pageviews/,CC0_ANALYTICS_DATA_PUBLIC_DERIVED_PREVIEW_OK,yes,Wikimedia pageviews documentation identifies Analytics datasets as CC0; preview object identifiers are pseudonymized
+twemcache,Twitter cache trace / Twemcache open trace collection,https://github.com/twitter/cache-trace,UNCLEAR,no,local registry does not contain final redistribution and attribution clearance
+metakv,MetaKV trace family via open cache trace collection,https://github.com/cacheMon/cache_dataset,UNCLEAR,no,local registry does not contain final redistribution and attribution clearance
+metacdn,MetaCDN trace family via open cache trace collection,https://github.com/cacheMon/cache_dataset,UNCLEAR,no,local registry does not contain final redistribution and attribution clearance
+cloudphysics,CloudPhysics / open cache trace collection block I/O family,https://github.com/cacheMon/cache_dataset,UNCLEAR,no,specific open trace collection provenance and terms require confirmation
+citibike,Citi Bike trip-data derived trace family,https://citibikenyc.com/system-data,UNCLEAR,no,local governance marks blocked pending review with privacy review required
+brightkite,Brightkite / SNAP-derived trace family,https://snap.stanford.edu/data/loc-brightkite.html,UNCLEAR,no,local governance marks blocked pending review with license and privacy review required

metadata/release_manifest.json

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+{
+  "data_files": [
+    "data/cross_family_evict_value_v1.parquet",
+    "data/objective_ablation_scalar.parquet"
+  ],
+  "dataset_name": "lafc-evict",
+  "dataset_repo": "SoroushVahidi/lafc-evict",
+  "excluded_families": [
+    "brightkite",
+    "citibike",
+    "cloudphysics",
+    "metacdn",
+    "metakv",
+    "twemcache"
+  ],
+  "file_inventory": [
+    "README.md",
+    "RELEASE_NOTES_v0_2.md",
+    "data/cross_family_evict_value_v1.parquet",
+    "data/objective_ablation_scalar.parquet",
+    "dataset_card.md",
+    "metadata/checksums.sha256",
+    "metadata/lafc_evict_v0_2_preview_families.json",
+    "metadata/provenance_summary.csv",
+    "metadata/release_manifest.json",
+    "metadata/sampling_manifest.json",
+    "metadata/schema.json",
+    "metadata/security_scan.json",
+    "metadata/source_family_registry.yaml",
+    "metadata/statistics.json",
+    "metadata/validation_report.md"
+  ],
+  "governance_artifacts": [
+    "metadata/source_family_registry.yaml",
+    "metadata/lafc_evict_v0_2_preview_families.json"
+  ],
+  "included_families": [
+    "wiki2018"
+  ],
+  "license_provenance_status": {
+    "basis": "Wikimedia pageviews and Analytics API documentation identify Analytics datasets/pageview data as CC0.",
+    "wiki2018": "APPROVED_WITH_ATTRIBUTION_AND_CAVEAT"
+  },
+  "machine_paths_in_metadata": false,
+  "no_raw_trace_rows": true,
+  "object_ids_pseudonymized": true,
+  "readiness": "READY_FOR_PUBLIC_PREVIEW_UPLOAD",
+  "release_title": "LAFC-Evict v0.2 Real-Data Preview",
+  "release_type": "real_data_preview",
+  "row_counts": {
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+    "objective_ablation_scalar": 2100000,
+    "total_rows": 4800000
+  },
+  "sampling": {
+    "method": "deterministic SHA-256 row sampling by source shard relative path and source row number",
+    "object_id_pseudonymization": "candidate_page_id replaced with obj_<first24_sha256(salt|original)>",
+    "pseudonym_salt_id": "v0.2-public-preview-object-id-v1",
+    "seed": "lafc-evict-sample-v0.2-preview-seed-20260811",
+    "source_file_count": 24,
+    "source_files_read_bytes": 2405368646
+  },
+  "schema_version": "lafc-evict-preview-v0.2",
+  "upload_status": "NOT_UPLOADED",
+  "version": "0.2-preview"
+}

metadata/sampling_manifest.json

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+{
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+  "object_id_pseudonymization": "candidate_page_id replaced with obj_<first24_sha256(salt|original)>",
+  "pseudonym_salt_id": "v0.2-public-preview-object-id-v1",
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+      "source_fold": "brightkite",
+      "source_relpath": "brightkite/scalar/shards/wiki2018_pageviews_en_50k__cap128.part0000.csv",
+      "source_root_label": "supervision_objective_ablation_v1",
+      "source_sha256": "050756657b66f8ec17f9140dfc26ffa600cb144a06c7f7a7358bc0994e3d32ad"
+    },
+    {
+      "dataset_key": "objective_ablation_scalar",
+      "source_csv_bytes": 78296568,
+      "source_fold": "brightkite",
+      "source_relpath": "brightkite/scalar/shards/wiki2018_pageviews_en_50k__cap128.part0010.csv",
+      "source_root_label": "supervision_objective_ablation_v1",
+      "source_sha256": "dc79b841ce070ae861b94e5ece4c90ca09860d42f4938ed56aa62dd4274dc333"
+    },
+    {
+      "dataset_key": "objective_ablation_scalar",
+      "source_csv_bytes": 72694227,
+      "source_fold": "brightkite",
+      "source_relpath": "brightkite/scalar/shards/wiki2018_pageviews_en_50k__cap128.part0021.csv",
+      "source_root_label": "supervision_objective_ablation_v1",
+      "source_sha256": "915bac75f61386b491233af936d7b92abf13b2ef38eee88e6e3ad688df1a64b8"
+    },
+    {
+      "dataset_key": "objective_ablation_scalar",
+      "source_csv_bytes": 66353983,
+      "source_fold": "brightkite",
+      "source_relpath": "brightkite/scalar/shards/wiki2018_pageviews_en_50k__cap128.part0031.csv",
+      "source_root_label": "supervision_objective_ablation_v1",
+      "source_sha256": "a45a5885788bca0a14200404cd1c4ec478ff12ff19d052736874ce6ed823c2f9"
+    }
+  ]
+}

metadata/schema.json

@@ -0,0 +1,398 @@
+{
+  "cross_family_evict_value_v1.parquet": [
+    {
+      "name": "preview_dataset",
+      "dtype": "str"
+    },
+    {
+      "name": "preview_version",
+      "dtype": "str"
+    },
+    {
+      "name": "sampling_seed",
+      "dtype": "str"
+    },
+    {
+      "name": "trace_name",
+      "dtype": "str"
+    },
+    {
+      "name": "trace_family",
+      "dtype": "str"
+    },
+    {
+      "name": "dataset_source",
+      "dtype": "str"
+    },
+    {
+      "name": "capacity",
+      "dtype": "int64"
+    },
+    {
+      "name": "horizon",
+      "dtype": "int64"
+    },
+    {
+      "name": "decision_id",
+      "dtype": "str"
+    },
+    {
+      "name": "decision_t",
+      "dtype": "int64"
+    },
+    {
+      "name": "decision_chunk_id",
+      "dtype": "int64"
+    },
+    {
+      "name": "candidate_page_id",
+      "dtype": "str"
+    },
+    {
+      "name": "split",
+      "dtype": "str"
+    },
+    {
+      "name": "y_loss",
+      "dtype": "float64"
+    },
+    {
+      "name": "y_value",
+      "dtype": "float64"
+    },
+    {
+      "name": "request_bucket",
+      "dtype": "float64"
+    },
+    {
+      "name": "request_confidence",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_bucket",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_confidence",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_recency_rank",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_age_norm",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_predictor_score",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_lru_score",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_is_predictor_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_is_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "score_gap_to_predictor_best",
+      "dtype": "float64"
+    },
+    {
+      "name": "score_gap_to_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "bucket_gap_to_predictor_best",
+      "dtype": "float64"
+    },
+    {
+      "name": "bucket_gap_to_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "confidence_gap_to_predictor_best",
+      "dtype": "float64"
+    },
+    {
+      "name": "confidence_gap_to_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_mean",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_std",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_min",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_max",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_unique_bucket_count",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_confidence_mean",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_confidence_std",
+      "dtype": "float64"
+    },
+    {
+      "name": "predictor_lru_disagree",
+      "dtype": "float64"
+    },
+    {
+      "name": "recent_candidate_request_rate",
+      "dtype": "float64"
+    },
+    {
+      "name": "recent_candidate_hit_rate",
+      "dtype": "float64"
+    },
+    {
+      "name": "source_root_label",
+      "dtype": "str"
+    },
+    {
+      "name": "source_fold",
+      "dtype": "str"
+    },
+    {
+      "name": "source_relpath",
+      "dtype": "str"
+    },
+    {
+      "name": "source_row_number",
+      "dtype": "int64"
+    },
+    {
+      "name": "object_id_public",
+      "dtype": "str"
+    },
+    {
+      "name": "candidate_page_id_original_present",
+      "dtype": "bool"
+    }
+  ],
+  "objective_ablation_scalar.parquet": [
+    {
+      "name": "preview_dataset",
+      "dtype": "str"
+    },
+    {
+      "name": "preview_version",
+      "dtype": "str"
+    },
+    {
+      "name": "sampling_seed",
+      "dtype": "str"
+    },
+    {
+      "name": "example_id",
+      "dtype": "str"
+    },
+    {
+      "name": "trace_name",
+      "dtype": "str"
+    },
+    {
+      "name": "trace_family",
+      "dtype": "str"
+    },
+    {
+      "name": "split",
+      "dtype": "str"
+    },
+    {
+      "name": "capacity",
+      "dtype": "int64"
+    },
+    {
+      "name": "horizon",
+      "dtype": "int64"
+    },
+    {
+      "name": "decision_id",
+      "dtype": "str"
+    },
+    {
+      "name": "decision_t",
+      "dtype": "int64"
+    },
+    {
+      "name": "candidate_page_id",
+      "dtype": "str"
+    },
+    {
+      "name": "eviction_loss_label",
+      "dtype": "float64"
+    },
+    {
+      "name": "next_arrival_label_raw",
+      "dtype": "float64"
+    },
+    {
+      "name": "next_arrival_label_censored",
+      "dtype": "float64"
+    },
+    {
+      "name": "next_arrival_censored_flag",
+      "dtype": "int64"
+    },
+    {
+      "name": "reuse_distance_label_raw",
+      "dtype": "float64"
+    },
+    {
+      "name": "reuse_distance_label_censored",
+      "dtype": "float64"
+    },
+    {
+      "name": "reuse_distance_censored_flag",
+      "dtype": "int64"
+    },
+    {
+      "name": "request_bucket",
+      "dtype": "float64"
+    },
+    {
+      "name": "request_confidence",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_bucket",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_confidence",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_recency_rank",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_age_norm",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_predictor_score",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_lru_score",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_is_predictor_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "candidate_is_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "score_gap_to_predictor_best",
+      "dtype": "float64"
+    },
+    {
+      "name": "score_gap_to_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "bucket_gap_to_predictor_best",
+      "dtype": "float64"
+    },
+    {
+      "name": "bucket_gap_to_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "confidence_gap_to_predictor_best",
+      "dtype": "float64"
+    },
+    {
+      "name": "confidence_gap_to_lru_victim",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_mean",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_std",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_min",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_bucket_max",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_unique_bucket_count",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_confidence_mean",
+      "dtype": "float64"
+    },
+    {
+      "name": "cache_confidence_std",
+      "dtype": "float64"
+    },
+    {
+      "name": "predictor_lru_disagree",
+      "dtype": "float64"
+    },
+    {
+      "name": "recent_candidate_request_rate",
+      "dtype": "float64"
+    },
+    {
+      "name": "recent_candidate_hit_rate",
+      "dtype": "float64"
+    },
+    {
+      "name": "source_root_label",
+      "dtype": "str"
+    },
+    {
+      "name": "source_fold",
+      "dtype": "str"
+    },
+    {
+      "name": "source_relpath",
+      "dtype": "str"
+    },
+    {
+      "name": "source_row_number",
+      "dtype": "int64"
+    },
+    {
+      "name": "object_id_public",
+      "dtype": "str"
+    },
+    {
+      "name": "candidate_page_id_original_present",
+      "dtype": "bool"
+    }
+  ]
+}

metadata/security_scan.json

@@ -0,0 +1,4 @@
+{
+  "findings": [],
+  "passed": true
+}

metadata/source_family_registry.yaml

@@ -0,0 +1,93 @@
+families:
+  - family: twemcache
+    source_name: Twitter cache trace / Twemcache open trace collection
+    source_url: https://github.com/twitter/cache-trace
+    upstream_license: open_trace_collection_needs_citation_review
+    redistribution_status: eligible_pending_final_review
+    recommended_for_v0_1_open: true
+    privacy_risk: low
+    notes: Candidate for lafc-evict-v0.1-open if final redistribution and attribution checks stay clear.
+    required_citation: true
+    review_status: needs_review
+    recommended_for_v0_2_preview: false
+    v0_2_preview_redistribution_status: UNCLEAR
+
+  - family: metakv
+    source_name: MetaKV trace family via open cache trace collection
+    source_url: https://github.com/cacheMon/cache_dataset
+    upstream_license: open_trace_collection_needs_citation_review
+    redistribution_status: eligible_pending_final_review
+    recommended_for_v0_1_open: true
+    privacy_risk: low
+    notes: Candidate for lafc-evict-v0.1-open if final redistribution and attribution checks stay clear.
+    required_citation: true
+    review_status: needs_review
+    recommended_for_v0_2_preview: false
+    v0_2_preview_redistribution_status: UNCLEAR
+
+  - family: metacdn
+    source_name: MetaCDN trace family via open cache trace collection
+    source_url: https://github.com/cacheMon/cache_dataset
+    upstream_license: open_trace_collection_needs_citation_review
+    redistribution_status: eligible_pending_final_review
+    recommended_for_v0_1_open: true
+    privacy_risk: low
+    notes: Candidate for lafc-evict-v0.1-open if final redistribution and attribution checks stay clear.
+    required_citation: true
+    review_status: needs_review
+    recommended_for_v0_2_preview: false
+    v0_2_preview_redistribution_status: UNCLEAR
+
+  - family: cloudphysics
+    source_name: CloudPhysics / open cache trace collection block I/O family
+    source_url: https://github.com/cacheMon/cache_dataset
+    upstream_license: open_trace_collection_needs_citation_review
+    redistribution_status: eligible_pending_final_review
+    recommended_for_v0_1_open: true
+    privacy_risk: low
+    notes: Candidate for lafc-evict-v0.1-open if the specific open trace collection provenance and attribution terms are confirmed.
+    required_citation: true
+    review_status: needs_review
+    recommended_for_v0_2_preview: false
+    v0_2_preview_redistribution_status: UNCLEAR
+
+  - family: wiki2018
+    source_name: Wikimedia public pageviews derived proxy trace
+    source_url: https://dumps.wikimedia.org/other/pageviews/
+    upstream_license: wikimedia_public_pageviews_with_attribution
+    redistribution_status: eligible_pending_final_review
+    recommended_for_v0_1_open: true
+    privacy_risk: low
+    notes: Pageview-derived proxy trace for request mixtures; not a byte-for-byte CDN trace and should be described that way.
+    required_citation: true
+    review_status: needs_review
+    recommended_for_v0_2_preview: true
+    v0_2_preview_redistribution_status: CC0_ANALYTICS_DATA_PUBLIC_DERIVED_PREVIEW_OK
+    v0_2_preview_public_upload_status: APPROVED_WITH_ATTRIBUTION_AND_CAVEAT
+    v0_2_preview_license_basis: Wikimedia pageviews readme and Analytics API access policy identify Analytics datasets/pageview data as CC0.
+
+  - family: citibike
+    source_name: Citi Bike trip-data derived trace family
+    source_url: https://citibikenyc.com/system-data
+    upstream_license: source_terms_require_review
+    redistribution_status: blocked_pending_review
+    recommended_for_v0_1_open: false
+    privacy_risk: medium
+    notes: Exclude from lafc-evict-v0.1-open until redistribution and privacy review are complete.
+    required_citation: true
+    review_status: blocked_pending_review
+    recommended_for_v0_2_preview: false
+    v0_2_preview_redistribution_status: UNCLEAR
+
+  - family: brightkite
+    source_name: Brightkite / SNAP-derived trace family
+    source_url: https://snap.stanford.edu/data/loc-brightkite.html
+    upstream_license: source_terms_and_privacy_require_review
+    redistribution_status: blocked_pending_review
+    recommended_for_v0_1_open: false
+    privacy_risk: medium
+    notes: Exclude from lafc-evict-v0.1-open until license and privacy review are complete.
+    required_citation: true
+    review_status: blocked_pending_review
+    recommended_for_v0_2_preview: false
+    v0_2_preview_redistribution_status: UNCLEAR

metadata/statistics.json

@@ -0,0 +1,167 @@
+{
+  "created_at_utc": "2026-08-11T20:43:24+00:00",
+  "datasets": {
+    "cross_family_evict_value_v1": {
+      "capacities": [
+        32,
+        64,
+        128
+      ],
+      "columns": [
+        "preview_dataset",
+        "preview_version",
+        "sampling_seed",
+        "trace_name",
+        "trace_family",
+        "dataset_source",
+        "capacity",
+        "horizon",
+        "decision_id",
+        "decision_t",
+        "decision_chunk_id",
+        "candidate_page_id",
+        "split",
+        "y_loss",
+        "y_value",
+        "request_bucket",
+        "request_confidence",
+        "candidate_bucket",
+        "candidate_confidence",
+        "candidate_recency_rank",
+        "candidate_age_norm",
+        "candidate_predictor_score",
+        "candidate_lru_score",
+        "candidate_is_predictor_victim",
+        "candidate_is_lru_victim",
+        "score_gap_to_predictor_best",
+        "score_gap_to_lru_victim",
+        "bucket_gap_to_predictor_best",
+        "bucket_gap_to_lru_victim",
+        "confidence_gap_to_predictor_best",
+        "confidence_gap_to_lru_victim",
+        "cache_bucket_mean",
+        "cache_bucket_std",
+        "cache_bucket_min",
+        "cache_bucket_max",
+        "cache_unique_bucket_count",
+        "cache_confidence_mean",
+        "cache_confidence_std",
+        "predictor_lru_disagree",
+        "recent_candidate_request_rate",
+        "recent_candidate_hit_rate",
+        "source_root_label",
+        "source_fold",
+        "source_relpath",
+        "source_row_number",
+        "object_id_public",
+        "candidate_page_id_original_present"
+      ],
+      "csv_to_parquet_ratio": 21.054236211198134,
+      "decision_count": 91186,
+      "parquet_bytes": 66875136,
+      "row_count": 2700000,
+      "source_csv_equivalent_bytes": 1408004910,
+      "splits": [
+        "train"
+      ]
+    },
+    "objective_ablation_scalar": {
+      "capacities": [
+        32,
+        64,
+        128
+      ],
+      "columns": [
+        "preview_dataset",
+        "preview_version",
+        "sampling_seed",
+        "example_id",
+        "trace_name",
+        "trace_family",
+        "split",
+        "capacity",
+        "horizon",
+        "decision_id",
+        "decision_t",
+        "candidate_page_id",
+        "eviction_loss_label",
+        "next_arrival_label_raw",
+        "next_arrival_label_censored",
+        "next_arrival_censored_flag",
+        "reuse_distance_label_raw",
+        "reuse_distance_label_censored",
+        "reuse_distance_censored_flag",
+        "request_bucket",
+        "request_confidence",
+        "candidate_bucket",
+        "candidate_confidence",
+        "candidate_recency_rank",
+        "candidate_age_norm",
+        "candidate_predictor_score",
+        "candidate_lru_score",
+        "candidate_is_predictor_victim",
+        "candidate_is_lru_victim",
+        "score_gap_to_predictor_best",
+        "score_gap_to_lru_victim",
+        "bucket_gap_to_predictor_best",
+        "bucket_gap_to_lru_victim",
+        "confidence_gap_to_predictor_best",
+        "confidence_gap_to_lru_victim",
+        "cache_bucket_mean",
+        "cache_bucket_std",
+        "cache_bucket_min",
+        "cache_bucket_max",
+        "cache_unique_bucket_count",
+        "cache_confidence_mean",
+        "cache_confidence_std",
+        "predictor_lru_disagree",
+        "recent_candidate_request_rate",
+        "recent_candidate_hit_rate",
+        "source_root_label",
+        "source_fold",
+        "source_relpath",
+        "source_row_number",
+        "object_id_public",
+        "candidate_page_id_original_present"
+      ],
+      "csv_to_parquet_ratio": 17.498755471695453,
+      "decision_count": 43528,
+      "parquet_bytes": 73230958,
+      "row_count": 2100000,
+      "source_csv_equivalent_bytes": 1281450627,
+      "splits": [
+        "train"
+      ]
+    }
+  },
+  "excluded_families": [
+    "brightkite",
+    "citibike",
+    "cloudphysics",
+    "metacdn",
+    "metakv",
+    "twemcache"
+  ],
+  "full_release_size_estimates": {
+    "basis": "local du sizes divided by sampled CSV-to-Parquet ratio; rough upper-level estimate",
+    "combined_parquet_estimate_bytes": 11970334873,
+    "cross_family_csv_tree_bytes": 99857989632,
+    "cross_family_parquet_estimate_bytes": 5202061417,
+    "objective_ablation_csv_tree_bytes": 129922760704,
+    "objective_ablation_parquet_estimate_bytes": 6768273456
+  },
+  "included_families": [
+    "wiki2018"
+  ],
+  "preview_version": "v0.2",
+  "sampling_seed": "lafc-evict-sample-v0.2-preview-seed-20260811",
+  "totals": {
+    "csv_to_parquet_ratio": 19.195849803649512,
+    "parquet_bytes": 140106094,
+    "row_count": 4800000,
+    "source_csv_equivalent_bytes": 2689455537,
+    "source_files_read": 24,
+    "source_files_read_bytes": 2405368646,
+    "staging_total_bytes_before_checksums": 140106094
+  }
+}

metadata/validation_report.md

@@ -0,0 +1,6 @@
+# Validation Report
+
+- Release root: `lafc-evict-v0.2-preview`
+- Validation result: passed
+- Validator: `lafc_evict_dataset.preview.validate_preview_release`
+