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---
license: cc-by-4.0
language:
- en
task_categories:
- other
tags:
- biology
- single-cell
- scRNA-seq
- h5ad
- cancer
- tumor
- benchmark
- bioinformatics
size_categories:
- 1M<n<10M
---
# SingleCell-Unseen-Benchmark
## Overview
**SingleCell-Unseen-Benchmark** is a large-scale unseen single-cell transcriptomic benchmark designed to systematically evaluate foundation models on cell identification and cell type tracing tasks.
The benchmark covers **tumor, stem, neural, and normal cell populations**, with a particular emphasis on **unseen data distributions**, including rare cell types, cross-dataset generalization, and heterogeneous tumor states.
In addition to curated datasets, this repository provides **standardized benchmark results** for multiple single-cell foundation models, enabling transparent and reproducible comparison.
---
## Dataset Collection
### Tumor Cells
- **Source**: GEO
- **Cancer types**: 21
- **Samples**: 2,225
- **Cells**: 1,645,662
- **Cell states**: Primary tumors, metastases, circulating tumor cells (CTCs)
### Stem Cells
- **Source**: CELLxGENE
- **Datasets**: 5
- **Cells**: 325,092
- **Stem cell types**: 4
### Neural Cells
- **Source**: CELLxGENE
- **Datasets**: 1
- **Cells**: 423,707
- **Neural cell types**: 6
### Normal Cells
- **Source**: CELLxGENE
- **Datasets**: 7
- **Cells**: 1,838,991
- **Normal cell types**: 10
### Preprocessing
- All genes were mapped to **HGNC symbols**
- Cells with fewer than **200 detected genes** were removed
- Expression matrices are stored in **AnnData (`.h5ad`) format**
---
## Cell Type and Malignancy Annotation Strategy
Tumor cells derived from GEO were re-identified using a **consensus workflow**:
1. **Lineage-level screening** based on **CancerSCEM 2.0** marker genes
2. **Malignancy confirmation** using **inferCNV**
CELLxGENE-derived datasets retain their **original annotations**.
This strategy ensures consistent tumor labeling while minimizing dataset-specific bias.
---
## Downstream Benchmark Tasks
The benchmark evaluates foundation models across multiple biologically meaningful tasks:
| Category | Task | Prediction Type |
|--------|------|-----------------|
| Tumor | Tumor cell identification | Binary |
| Tumor | Primary site tracing | Multi-class |
| Stem | Stem cell identification | Binary |
| Stem | Stem cell subtype classification | Multi-class |
| Neural | Neural cell identification | Binary |
| Neural | Neural cell subtype classification | Multi-class |
Models take **high-dimensional cell embeddings** as input and perform prediction using **lightweight downstream classifiers**, isolating representation quality from classifier complexity.
---
## Benchmark Models
The following single-cell foundation models are evaluated:
- **Geneformer**
- **scFoundation**
- **scGPT**
- **UCE**
- **scLONG**
---
## Evaluation Metrics
- **Binary classification tasks**
- Accuracy
- Precision
- Recall
- F1-score
- **Multi-class classification tasks**
- Accuracy
- Macro-Precision
- Macro-Recall
- Macro-F1
---
## Data Format and Access
### Data Files
All datasets are provided in **AnnData (`.h5ad`) format**.
> **Note**
> `.h5ad` files are not natively supported by the Hugging Face Dataset Viewer.
> Users are expected to download the files and load them locally using standard single-cell analysis tools such as **Scanpy** or **Seurat**.
## Benchmark Results
In addition to raw datasets, we provide **complete benchmark evaluation results** under the `results/` directory.
### Design Rationale
- **`by_model/`**
Provides a **model-centric view**, facilitating analysis of how a single model performs across different tasks.
- **`by_task/`**
Provides a **task-centric view**, enabling direct comparison of multiple models on the same task.
Both views contain **identical information** and are provided to improve usability, clarity, and reproducibility.
---
## Intended Use
This benchmark is intended for:
- Evaluating **generalization and robustness** of single-cell foundation models
- Studying **tumor cell identification and origin tracing** under unseen conditions
- Benchmarking representation quality across diverse biological contexts
The dataset is **not intended for clinical decision-making**.
---
## Citation
If you use this dataset or benchmark in your work, please cite:
## Contact
For questions, issues, or suggestions, please open an issue on the Hugging Face repository.
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