Add preprocessed data

Movies/nm/collab_emb.pt

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Movies/nm/img_emb.pt

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Movies/nm/mappings.pkl

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Movies/nm/mod_presence.pt

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Movies/nm/test.pkl

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Movies/nm/train.pkl

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Movies/nm/txt_emb.pt

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Movies/nm/valid.pkl

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README.md

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+---
+language:
+- en
+tags:
+- recommendation
+- multimodal
+- sequential-recommendation
+---
+
+# MoSID preprocessed data
+
+Preprocessed item features and sequence splits for the Movies dataset in nm mode.
+
+## Layout
+
+The files under `Movies/nm/` use the same contiguous item IDs. ID 0 is reserved for padding; valid item IDs are 1 through N.
+
+| File | Content |
+| --- | --- |
+| txt_emb.pt | Text embedding tensor, shape [N+1, 768] |
+| img_emb.pt | Visual embedding tensor, shape [N+1, 768] |
+| collab_emb.pt | Collaborative embedding tensor, shape [N+1, 256] |
+| mod_presence.pt | Boolean tensor, shape [N+1, 2], for text and visual availability |
+| mappings.pkl | Mapping dictionary containing item2id |
+| train.pkl | Training item_seqs and labels |
+| valid.pkl | Validation item_seqs and labels |
+| test.pkl | Test item_seqs and labels |
+
+Place the `Movies` directory under `datasets/amazon/` in the MoSID source repository. Semantic IDs and codebook weights are generated by the Stage 1 training and export commands provided in the source repository.
+
+## Integrity
+
+`SHA256SUMS.txt` contains the SHA-256 hashes of the released data files.
+
+## Serialization
+
+The `.pt` files contain PyTorch tensors. The `.pkl` files use Python pickle. Only load serialized files from a trusted source.

SHA256SUMS.txt

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+de2bc7b43636f50ea63f6fc1ba4cd336679af9e51162942b41bb6f28c0bc1039  Movies/nm/img_emb.pt
+3681d0d9ee52e0c41ae981b5d29d33b1309fcf20ec5ada9d32a367d637a61fd6  Movies/nm/collab_emb.pt
+83320b915ed987d169d51b41b3c4981dca5246d0e8a62b8744b746465d64e785  Movies/nm/mod_presence.pt
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+c6b0dce411fbd8d0281bbb6dc10440a33ff106687c3537f821505e9867fbb690  Movies/nm/train.pkl
+6de4148a296a02d52e76a95ab07324a10098323fc1a7806656d7135276236e91  Movies/nm/valid.pkl
+f6d3a3842e080bad0907a1823a2483ef1fe4e38c6e526957e2a6db5514e15a1d  Movies/nm/test.pkl