#  comparison between raw counts and log TPM values 

**URL:** <https://forum.depmap.org/t/comparison-between-raw-counts-and-log-tpm-values/4339>\
**Category:** Q&A\
**Tags:** data\
**Created:** [July 10, 2025, 2:16pm UTC](https://forum.depmap.org/t/comparison-between-raw-counts-and-log-tpm-values/4339 "2025-07-10T14:16:05Z")\
**Posts on this page:** 1\
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**Author:** ![SongSong](https://avatars.discourse-cdn.com/v4/letter/s/a9a28c/32.png) [@SongSong](https://forum.depmap.org/u/SongSong)\
**Post date:** [July 24, 2025, 4:15am UTC](https://forum.depmap.org/t/comparison-between-raw-counts-and-log-tpm-values/4339/2 "2025-07-24T04:15:38Z")

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In my opinion, this is because the expression data was calculated using Salmon 1.10.0 (please refer to the [25Q2 release note](https://forum.depmap.org/t/announcing-the-25q2-release/4257)), which employs a probabilistic model. But since I explained it based on the latest version of DepMap data, it would be better to clarify the version of the dataset.

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