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--- |
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datasets: |
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- kaggle |
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language: |
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- en |
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task_categories: |
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- text-classification |
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- text-retrieval |
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- time-series-forecasting |
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pretty_name: "UFO Sightings Unified Semantic Dataset" |
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size_categories: |
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- 100K<n<1M |
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license: mit |
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tags: |
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- ufo |
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- ufology |
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- anomalous-phenomena |
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- embeddings |
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- hdbscan |
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- semantic-search |
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- cluster-analysis |
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- dataset |
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- geospatial |
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- moon-illumination |
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- aviation |
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--- |
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# **UFO Sightings – Cleaned & Unified Dataset (~327k rows)** |
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This dataset merges several publicly available UFO sighting datasets from Kaggle into one **cleaned**, **standardized**, and **enriched** file. |
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The goal is simply to provide a consolidated dataset instead of many fragmented sources with inconsistent formatting. |
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This release contains **a single JSONL file** with approximately **327,000 records**. |
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No private or identifying information was present in the original data. |
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--- |
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## **📦 Source** |
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All entries originate from publicly available UFO sighting datasets on **Kaggle**. |
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Each row corresponds to a single reported sighting. |
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Source Files located in source folder |
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--- |
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## **🧹 Cleaning / Normalization Performed** |
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All rows in this unified file were standardized using the same basic rules: |
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* timestamps parsed and converted into a consistent `t_utc` (ISO-8601, UTC) |
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* city/state/country fields harmonized where possible |
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* latitude/longitude coerced to floats |
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* basic HTML/unicode cleanup in free-text descriptions (`text`) |
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* invalid or fully unparseable rows removed |
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* source field preserved as `src` |
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No interpretation or filtering based on content was performed. |
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--- |
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## **✨ Added Contextual Fields** |
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A small number of lightweight “sidecar” fields were added based on timestamp + coordinates: |
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* **`moon_illum`** — moon illumination fraction |
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* **`moon_alt_deg`** — moon altitude in degrees |
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* **`nearest_airport_code`** — closest airport (ICAO) |
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* **`nearest_airport_km`** — distance to that airport in km |
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* **`wx_bucket`** — rough weather bucket (coarse category) |
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These values are approximate and should be treated as exploratory metadata only. |
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--- |
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## **🧩 Clustering Fields (Included in the File)** |
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The dataset includes two fields that come from text-similarity grouping: |
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* **`cluster_id`** — numeric label |
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* **`prob`** — membership confidence |
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These reflect **text similarity**, not verified categories or event types. |
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They are included because they were already part of the cleaned file. |
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--- |
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## **📝 Field Reference** |
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Each row has the following structure (example): |
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``` |
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{ |
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"uid": "scrubbed/row327047", |
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"t_utc": "2013-09-09T09:51:00.000Z", |
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"lat": 32.7152778, |
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"lon": -117.1563889, |
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"text": "2 white lights zig-zag over Qualcomm Stadium...", |
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"src": "scrubbed", |
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"city": "san diego", |
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"state": "ca", |
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"country": "US", |
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"cluster_id": 725, |
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"prob": 1.0, |
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"moon_illum": 0.163603127, |
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"moon_alt_deg": -67.0003509521, |
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"nearest_airport_km": 3.7174715996, |
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"nearest_airport_code": "KSAN", |
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"reports_z": null, |
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"wx_bucket": "unknown" |
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} |
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``` |
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### **Field descriptions** |
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| Field | Type | Notes | |
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| -------------------------- | ---------- | ------------------------------------------------ | |
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| `uid` | string | Stable row identifier | |
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| `t_utc` | string | Event timestamp, ISO-8601 UTC | |
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| `lat`, `lon` | float | Approximate coordinates | |
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| `city`, `state`, `country` | string | Cleaned location fields (best-effort) | |
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| `text` | string | Free-text sighting description | |
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| `src` | string | Original Kaggle dataset source | |
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| `cluster_id` | int | Text-similarity cluster (for research use only) | |
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| `prob` | float | Cluster membership probability | |
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| `moon_illum` | float | Moon illumination (0–1) | |
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| `moon_alt_deg` | float | Moon altitude in degrees | |
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| `nearest_airport_km` | float | Distance to nearest airport | |
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| `nearest_airport_code` | string | ICAO code | |
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| `wx_bucket` | string | Approximate weather category | |
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| `reports_z` | float/null | Unused placeholder field (kept for completeness) | |
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--- |
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## **⚠️ Notes & Limitations** |
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* Accuracy of timestamps and locations depends entirely on original reporting. |
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* Weather buckets are coarse (not NOAA-grade). |
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* Airport distances are approximate nearest-neighbor lookups. |
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* Cluster labels are based solely on text similarity and do **not** reflect event reality. |
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* No claims are made about the nature or validity of any sighting. |
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--- |
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## **📄 License** |
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Source data was public on Kaggle. |
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This cleaned, merged, and lightly enriched version is released for **research and educational use**. |
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Users should follow the original dataset licensing terms. |
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