LatentCellBio × AI

Wiki

The teaching layer under the posts — organized by topic, with a terminology index. Each idea is explained once here, so posts can link to it instead of re-explaining. The posts are interest-driven chapters; this is the reusable ground beneath them.

Terminology index

AI & Machine Learning

How models learn, represent, and reason.

  • AttentionconceptEach token deciding which other tokens to look at, weighted by relevance.
  • Diffusion modelconceptA generative model that learns to turn pure noise into a sample by reversing a gradual noising process, one denoising step at a time.
  • Embeddingsdeep-diveVectors of numbers that place data in a learned space, so math on the vectors reflects real relationships.
  • Fine-tuningconceptTaking a model that already learned a lot and nudging it to master one specific task.
  • Foundation modelconceptA large model pre-trained on broad data once, then reused for many downstream tasks.
  • Large language modelconceptA transformer trained on huge amounts of text to predict the next token, which yields broad language and reasoning ability.
  • Latent spaceconceptThe compressed internal 'map' a model learns, where similar things sit close together.
  • TransformerconceptA neural network that reads a whole sequence at once and lets every element decide which others matter.

Biology

Molecules, cells, and how life is organized.

  • The central dogmaconceptHow genetic information flows: DNA is transcribed to RNA, which is translated to protein.

Measurement & Inference

Seeing and quantifying — biophysics, statistics, causality.

Bio × AI Methods

Where the two meet — structure, sequence, cells, molecules.

  • AlphaFoldconceptA model that predicts a protein's 3D structure directly from its amino-acid sequence.
  • Knowledge graphconceptA network of biomedical facts — genes, drugs, diseases, proteins linked by typed relationships you can query and reason over.
  • Molecular dockingconceptPredicting how a small molecule fits into a protein's pocket — the pose — and scoring how well it binds.
  • Perturbation predictionconceptPredicting how a cell's gene expression changes in response to a perturbation — without running the experiment.
  • Protein designconceptBuilding new proteins that don't exist in nature to do a specific job — the inverse of structure prediction.
  • Protein language modelconceptA language model trained on protein sequences, treating amino acids like tokens to learn the 'grammar' of proteins.
  • Single-cell foundation modelconceptA transformer pretrained on millions of single cells that turns a cell's gene expression into a reusable representation.
  • Variant-effect predictionconceptPredicting whether a genetic mutation is harmful or harmless — often from evolution and protein language models alone.

Domains & Disease

Proteins, genomes, cancer, the heart, aging.

  • Gene editingconceptMaking precise, targeted changes to a genome's DNA sequence.
  • mRNA vaccineconceptA vaccine that delivers mRNA instructions so your own cells make the target protein — you ship the recipe, not the protein.

Translation

Lab → clinic → society; trust and validation.

  • De-identificationconceptStripping the identifiers that tie a health record to a person — necessary to share clinical data, but not enough to make it anonymous.
  • Differential privacyconceptA mathematical guarantee that a result barely changes whether or not any one person's data was used.
  • EHR foundation modelconceptA model pretrained on millions of longitudinal patient records, then fine-tuned to predict what happens next in the clinic.
  • Federated learningconceptTrain one shared model across many sites without moving the raw data — the model travels to the data.

Frontier

Agentic science, self-driving labs, the virtual cell.

  • Self-driving labconceptA lab where AI proposes experiments, robots run them, and results feed back — closing the loop with minimal human intervention.