datasets
Training and evaluation data, with the modality, task and licence stated up front. Listed live from the Hugging Face Hub.
melodix-stemsSTEM_sftCeltic_Stems_Reference_Sessions_Preview
Harmonic Frontier Audio – Celtic Constellation Reference Sessions (Preview, v0.9)
A high-fidelity music-production dataset designed to connect isolated source performances, production processing, arrangement context, and finished musical outcomes.
Celtic Constellation Reference Sessions (Preview), created by Harmonic Frontier Audio, introduces the Reference Sessions product vertical through a compact proof-of-concept built around purpose-recorded Celtic ensemble material.… See the full description on the dataset page: https://huggingface.co/datasets/Harmonic-Frontier-Audio/Celtic_Stems_Reference_Sessions_Preview.stem-scientific-code-sample
AxiomSet Labs STEM Scientific-Code Sample
A 30-task sample of STEM reasoning and scientific-code problems across five domains.
Domains
Biology: 6 tasks
Chemistry: 6 tasks
Materials Science: 6 tasks
Mathematics: 6 tasks
Physics: 6 tasks
Each task contains two subproblems and one main problem, including prompts, scientific background, testing templates, and reference solutions.
Files
data/sample.jsonl — one task per line; used by the Hugging Face… See the full description on the dataset page: https://huggingface.co/datasets/AxiomSetLabs/stem-scientific-code-sample.vocalsetMUSDB_stems_encodec_12kbpsMUSDB_stems_opus_12kbpsMUSDB_stems_stable_audio_fp16Plave_StemsWarwick-STEM
Warwick STEM Dataset (WebDataset)
A collection of 19,769 experimental scanning transmission electron microscopy (STEM) images from the University of Warwick, spanning hundreds of diverse materials projects collected between 2010 and 2018.
Dataset Description
This dataset contains experimental STEM images originally published as part of the Warwick Electron Microscopy Datasets by Jeffrey Ede. The images cover a wide range of materials and imaging conditions, making them… See the full description on the dataset page: https://huggingface.co/datasets/Stemson-AI/Warwick-STEM.Stems-Evaluation-Kit
🎧 SonicSets High-Fidelity Stems Evaluation Kit
This is a premium evaluation subset provided by SonicSets, the industrial-grade audio data infrastructure for Large Audio Models (LAM).
📊 Dataset Specifications
Format: 48kHz / 24-bit Uncompressed WAV (Studio-Grade Ground Truth)
Feature: Absolute zero-crosstalk multi-track isolation
Environment: Strict anechoic capture (RT60 < 0.2s)
Purpose: Fully optimized for training and benchmarking state-of-the-art Source… See the full description on the dataset page: https://huggingface.co/datasets/drizzymedia/Stems-Evaluation-Kit.stem-separation-benchmark-2026
StemSplit Stem-Separation Benchmark 2026
A reproducible head-to-head comparison of every popular open-source music
source-separation model against the StemSplit production
API, evaluated on the standard MUSDB18-HQ test split using BSS Eval v4 and a
small set of CC-BY tracks for qualitative listening.
Built and maintained by the StemSplit team. Source code:
scripts/hf-benchmark on GitHub.
Leaderboard (median SDR per stem)
model_id
bass
drums
other
vocals… See the full description on the dataset page: https://huggingface.co/datasets/StemSplitio/stem-separation-benchmark-2026.stem-stack-cleanedMorphology_Predictionstem-stack-dpo-datasetStems-Evaluation-Kit
🎧 SonicSets High-Fidelity Stems Evaluation Kit
This is a premium evaluation subset provided by SonicSets, the industrial-grade audio data infrastructure for Large Audio Models (LAM).
📊 Dataset Specifications
Format: 48kHz / 24-bit Uncompressed WAV (Studio-Grade Ground Truth)
Feature: Absolute zero-crosstalk multi-track isolation
Environment: Strict anechoic capture (RT60 < 0.2s)
Purpose: Fully optimized for training and benchmarking state-of-the-art Source Separation… See the full description on the dataset page: https://huggingface.co/datasets/sonicsets-data/Stems-Evaluation-Kit.stem-stack-balancedstems-predict-datastem-stack-cleaned-no-linksecond_model_birds_nonbirdsatomagined
Atomagined Dataset (WebDataset)
Simulated atomic-resolution HAADF-STEM images from the atomagined dataset. Each image is a 256x256 simulation of a unique ICSD crystal structure prototype viewed along a specific crystallographic direction, with various post-processing distortion conditions applied.
Dataset Description
This is a WebDataset conversion of the atomagined proxy dataset (subset available via GitHub). The full dataset (~67,871 images) is hosted on the Materials… See the full description on the dataset page: https://huggingface.co/datasets/Stemson-AI/atomagined.STEMScoredTopics-v1.0
Dataset Summary
A synthetic dataset of 5,584 topics, each rated on a 1-5 scale for its relevance to Science, Technology, Engineering, and Mathematics (STEM).
Data Fields
topic: A string representing a topic of study or research.
stemScore: A string from "1" (least STEM) to "5" (most STEM).
Potential Uses
This dataset is useful for a variety of NLP tasks:
Classification: Train a model to classify how STEM-related a given text is.
Instruction… See the full description on the dataset page: https://huggingface.co/datasets/MultivexAI/STEMScoredTopics-v1.0.nanoparticle-size-estimation
Nanoparticle Size Estimation Dataset (WebDataset)
100,000 simulated HAADF-STEM images of nanoparticles with three image variants per sample (raw simulation, normalized, and CycleGAN style-transferred), paired with per-structure metadata including atomic coordinates, morphology, and simulation parameters.
Dataset Description
Synthetic HAADF-STEM images of Pt nanoparticles on various support interfaces, generated for nanoparticle size and morphology prediction. Each sample… See the full description on the dataset page: https://huggingface.co/datasets/Stemson-AI/nanoparticle-size-estimation.denoise_judgingstems-predict-data-v2stem_sft_dataarabic-verbs-stems-Transitifguitar-stemsarabic-verbs-stemsfl-invasive-birds