优点：计算简单，导数恒为1（正区间），缓解梯度消失
Git packfiles use delta compression, storing only the diff when a 10MB file changes by one line, while the objects table stores each version in full. A file modified 100 times takes about 1GB in Postgres versus maybe 50MB in a packfile. Postgres does TOAST and compress large values, but that’s compressing individual objects in isolation, not delta-compressing across versions the way packfiles do, so the storage overhead is real. A delta-compression layer that periodically repacks objects within Postgres, or offloads large blobs to S3 the way LFS does, is a natural next step. For most repositories it still won’t matter since the median repo is small and disk is cheap, and GitHub’s Spokes system made a similar trade-off years ago, storing three full uncompressed copies of every repository across data centres because redundancy and operational simplicity beat storage efficiency even at hundreds of exabytes.
。heLLoword翻译官方下载是该领域的重要参考
# or use the vocab.txt from the HF files page
至于头发是什么时候掉光的，我不太清楚。阿爸自己也记不清了，只是说在外面的饭店吃多了鸡精，早早秃了头。