Update README.md

README.md

@@ -1,18 +1,40 @@
 ---
-tags:
-- art
 size_categories:
 - 1M<n<10M
 ---
+
 # Danbooru2023_metadata
 
-Metadata of posts from [Danbooru](https://danbooru.donmai.us), up to 2023-12-31.
+Lastest update: `2024-01-12`
+Latest post #: `7081619`
+
+Metadata of posts from [Danbooru](https://danbooru.donmai.us), into a single sqlite3 file.
+
+[Looking for parquet files?](https://huggingface.co/datasets/Jakaline/Danbooru2023_metadata/tree/refs%2Fconvert%2Fparquet/default/train)
+Looking for images? [nyanko7/danbooru2023](https://huggingface.co/datasets/nyanko7/danbooru2023)
+
+## Columns
+
+`id, md5, created_at, updated_at, score, up_score, down_score, rating, image_width, image_height, file_ext, parent_id, pixiv_id, duration, pixel_hash, tag_string_general, tag_string_character, tag_string_copyright, tag_string_artist, tag_string_meta`
+
+## Specifics of Danbooru
+
+### Status
+
+Every danbooru posts could be categorized to four types of status.
+
+1. Active: Approved posts.
+2. Pending: Posts that are waiting to be approved. If a post is pending for more than 3 days without a moderator's approval, it is deleted. 
+3. Deleted: Posts that do not meet danbooru's criteria (Non-anime, low quality, etc)
+4. Banned: Posts that are copyright-claimed or off-limit content.
+
+Therefore, we should only use images from active posts. (Banned posts cannot be downloaded by normal users.)
+
+Sadly, the [Danbooru2021 dataset](https://gwern.net/danbooru2021) did not filter any deleted posts, and a lot of text-to-image models were trained with those trash.
 
-- This dataset excludes posts that have been banned and/or deleted.
-- Scores are not included in this dataset. Danbooru scores are unreliable for assessing aesthetic quality.
-- Utilize the parent_id to identify the representative image among similar images. [See link](https://danbooru.donmai.us/wiki_pages/help%3Apost_relationships)
+This metadata only contains active posts.
 
-### Misc
+## Misc
 
 - If you aim to create your own anime-based image dataset from danbooru posts, you should definitely exclude posts with the following tags: `cosplay_photo third-party_edit text-only_page`
 - Also consider excluding posts with the following tags, if you are aiming for high quality: `photo_(medium) 3d no_humans comic`