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AI drug discovery models/Virtual Cells & Single-Cell/SCimilarity
model-family passport · Review date not recorded

SCimilarity

A cell-atlas foundation model for scalable similarity search across expression states.

3/7Evidence fields documented
60-SECOND EVALUATION VIEW

What should a scientist know before using SCimilarity?

UnresolvedEvidence direction is incomplete or not yet resolved
Best suited forRepresentation · Prediction
Evidence supportsPrimary links may be present, but BioAtlas does not claim a review date without a record-level timestamp.
Evidence does not establishUniversal superiority, therapeutic success, clinical utility or regulatory acceptance.
Major limitationPerformance depends on the evaluation dataset and operating conditions.
CompareAdd to evaluationView evidence
Current registry recordVersion history not yet curated1 recorded release · Review date not recorded. A newer version is not assumed to be universally better.

What it is

SCimilarity learns a shared representation of single-cell expression profiles that supports search for biologically similar cells across large public atlases and unseen studies.

Evidence trail

BioAtlas keeps the path from source to decision visible. A connection records provenance; it does not imply that evidence is sufficient for every context.

Sources2 connectedPrimary resources and normalized claims
Claims0 normalizedNo normalized claim yet
EntitySCimilaritymodel-family · Version history not yet curated
ReviewReview date not recordedReview date not claimed
ConclusionContext requiredAdd to an evaluation before operational use

Model passport

Entity typemodel-family
OrganizationGenentech
Model family introducedNot normalized
AccessOpen source
Commercial useAllowed / verify checkpoint terms
DeploymentSelf-hosted
ComputeGPU recommended
Domainscells
Biology → representation → computation → evidence

How SCimilarity represents biology

model-familycells

Category is navigation. These fields describe the model-specific computational transformation and deliberately override broad category defaults.

1 · Biological inputs
Single-cell expression profile
2 · Input representation
Gene-expression vector
3 · Internal representation
Unified cell embedding
4 · Architecture
Single-cell foundation model
5 · Learning objective
Similarity-preserving cell representation learning
6 · Output representation
Dense vectorsNeighbor rankings

Biological scale

cellgene

Modalities & tasks

TranscriptomicsCellRepresentationPrediction

Registry, claims and frontier intelligence

Versioned registry

Version history not yet curated

1 version record · release year not yet normalized. Model-family identity remains separate from capability and access changes.

Explore version lineage →
Benchmark claim ledger

0 normalized claims

No task, dataset, split and metric claim has been normalized for this record yet.

Open claim intelligence →

Inputs and outputs

Inputs

Single-cell expression profile

Outputs

Cell embeddingsNearest-cell / annotation results

Scientific and technical profile

Scientific principles

Single-cell metric representation learningAtlas search

Technology

Cell embedding modelk-nearest-neighbor search
Ideas before algorithms

Scientific lineage

Explore all foundations

These are transparent concept matches—not claims that one scientist alone caused this model. Each connection is based on the model’s recorded domain, scientific principles, technical terms or an explicit lineage link.

Computational intelligence

Information, entropy and communication

Claude E. Shannon

Sequence modelling, cross-entropy training, language models, mutual information and representation learning all use Shannon’s framework.

Matched concepts: representation
Genomics & cell systems

The epigenetic landscape and cell-fate trajectories

Conrad H. Waddington

Single-cell embeddings, trajectory inference, reprogramming and virtual-cell models often represent cell identity as movement through a learned state landscape.

Matched concepts: single-cell
Genomics & cell systems

Gene regulation and the operon model

François Jacob & Jacques Monod

Target biology, perturbation models, transcriptomic response prediction and virtual cells all require an explicit model of regulated gene programs.

Matched concepts: expression
Molecular recognition

Concerted allostery

Jacques Monod, Jeffries Wyman & Jean-Pierre Changeux

Allosteric drug design exploits remote pockets to modulate function, selectivity and resistance without competing at the active site.

Matched concepts: state
Computational intelligence

Energy-based associative neural networks

John J. Hopfield

Energy-based learning, associative retrieval and modern attention mechanisms share conceptual roots with this statistical-physics view of computation.

Matched concepts: representation
Computational intelligence

Transformer self-attention

Ashish Vaswani and colleagues

Protein, genome, molecule and single-cell foundation models use attention to learn dependencies across biological sequences and multimodal inputs.

Matched concepts: foundation model

Evaluation evidence

Dataset or evaluationNot yet curated
Task or metricNot yet extracted
Evidence statusPrimary paper linked; benchmark extraction pending
Open source ↗

BioAtlas has not yet extracted a structured benchmark claim for this record.

Known limitations

  • Performance depends on the evaluation dataset and operating conditions.
  • A structured benchmark claim has not yet been extracted for this record.
  • Outputs require task-specific scientific and experimental validation.

Milestones

Not normalized

Published in Nature in 2024.