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README.md

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+---
+pretty_name: PastVu Historical Photographs
+size_categories:
+- 1M<n<10M
+task_categories:
+- image-classification
+- image-to-text
+- text-to-image
+- object-detection
+- zero-shot-image-classification
+annotations_creators:
+- found
+language:
+- ru
+- en
+multilingality:
+- multilingual
+source_datasets:
+- original
+configs:
+- config_name: default
+  data_files:
+  - split: train
+    path: pastvu_*.tar
+  default: true
+tags:
+- image
+license: other
+---
+
+# Dataset Card for PastVu Historical Photographs
+
+### Dataset Summary
+
+This dataset contains approximately 2,093,000 historical photographs from [PastVu.com](https://pastvu.com), spanning the years 1826-2000. PastVu is a collaborative project that allows users to view historical photographs on an interactive map, providing a unique temporal and geographical perspective on historical documentation. The dataset includes images downloaded at the best available resolution and is structured in webdataset format for efficient processing. The collection covers a wide range of historical subjects including architecture, street scenes, cultural events, portraits, and everyday life, primarily focused on Russia and former Soviet territories, though it includes photographs from around the world.
+
+### Languages
+
+The dataset is multilingual:
+- Russian (ru): Primary language for titles, descriptions, and metadata
+- English (en): Secondary language with some translated content and region names
+
+## Dataset Structure
+
+### Data Fields
+
+Each photograph in the dataset is accompanied by comprehensive JSON metadata containing the following fields:
+
+- `type`: Integer representing the content type
+- `adate`: ISO timestamp of when the photo was added to PastVu
+- `author`: String containing the photographer's name
+- `cid`: Unique content identifier
+- `dir`: String indicating image orientation/direction
+- `file`: Original URL of the image file
+- `geo`: Array containing latitude and longitude coordinates [lat, lon]
+- `h`: Original image height in pixels
+- `hs`: Scaled image height in pixels
+- `ldate`: Last modification timestamp
+- `title`: Photograph title/description in original language
+- `user`: Object containing uploader information:
+  - `login`: Username of the uploader
+  - `avatar`: URL to user's avatar image
+  - `disp`: Display name
+  - `ranks`: Array of user rank badges
+  - `sex`: Gender identifier
+- `w`: Original image width in pixels
+- `ws`: Scaled image width in pixels
+- `year`: Primary year the photograph was taken
+- `year2`: End year (for photographs spanning multiple years)
+- `s`: Status or quality indicator
+- `y`: String representation of the year
+- `waterh`: Watermark height
+- `waterhs`: Scaled watermark height
+- `watersignText`: Watermark text content
+- `watersignTextApplied`: Timestamp when watermark was applied
+- `r2d`: Array containing additional geographical reference data
+- `frags`: Array of image fragments or regions of interest
+- `regions`: Array of geographical region objects containing:
+  - `cid`: Region identifier
+  - `title_en`: English region name
+  - `title_ru`: Russian region name
+  - `phc`: Photo count in region
+  - `pac`: Active photo count
+  - `cc`: Total content count
+
+### Data Splits
+
+The dataset contains a single split:
+
+| Split | Number of Examples |
+| :---- | ---------------: |
+| `train` | ~2,093,000 |
+
+Total dataset size: Approximately 2,093,000 entries
+
+### Data Format
+
+- Images are stored in webdataset format across 2,094 tar files
+- Tar files are named sequentially: `pastvu_000000.tar` to `pastvu_002093.tar`
+- Approximately 1,000 images per tar file
+- Images are downloaded at the best available resolution from the original source
+- Each photograph has corresponding JSON metadata
+- Complete metadata is also provided in `pastvu.jsonl.zst`
+- Geographical coordinates are provided for most images, enabling spatial analysis
+
+### Temporal Coverage
+
+The dataset spans 174 years of photography:
+- **Start year**: 1826
+- **End year**: 2000
+- **Peak periods**: Soviet era (1920s-1990s) with extensive documentation
+
+## License Information
+
+### Licensing Structure
+
+The licensing for this dataset follows the original PastVu.com terms and conditions. Users should be aware that:
+
+- Images may have varying copyright statuses depending on their age and origin
+- Many historical photographs may be in the public domain due to age
+- Some images may still be under copyright protection
+- Attribution to original photographers and PastVu.com is recommended
+- Any use of materials published by the user for commercial purposes is only possible with the permission of the copyright holder of the specific image.

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