# Glossary

Terms are defined once, in plain language, without repeating the term inside its own definition. If a word isn't listed here, it's either a standard ML/tensor term (see [PyTorch's own vocabulary](/docs/core-concepts/shape-rank-stride-layout) for those) or not yet part of Tensormorph's decided vocabulary.

**Address space**
The full drill-down hierarchy from a whole model to a single scalar. See [Model, Architecture, Layer and Module](/docs/core-concepts/model-architecture-layer-module) for the exact levels.

**Commit pin**
A reference a loaded checkpoint carries back to the exact Lob commit and content hash it was materialized from. Used to detect when the underlying history has moved past what's currently open (a *stale-note*).

**Compute panel**
The UI surface for choosing or overriding which backend (CPU, WebGPU, CUDA, ROCm, Metal) serves a given computation. Defaults to `Compute: Auto`.

**Console**
The panel providing a full [TQL](/docs/reference/expressions-and-queries) REPL, for queries longer or more reusable than a quick filter.

**Explicit analysis**
A tier of computation (SVD/PCA, effective rank, expert similarity) that reads substantially more of a tensor's data than a mergeable tile statistic does, and is therefore requested deliberately rather than computed automatically.

**Fallback adapter**
The generic `ModelAdapter` used when no architecture-specific adapter recognizes a loaded model. Everything still opens and is inspectable; specialized views tied to a recognized architecture (like the MoE Expert Galaxy) aren't available.

**Inspector**
The panel showing properties and statistics for the current selection, present in every view.

**Lob**
The tensor-native version-control system Tensormorph anchors to via commit pins. Lob is a separate system, not bundled into Tensormorph, and its own branch/merge model is still being defined.

**Model Adapter**
The per-architecture component that reads a loaded checkpoint into the Semantic Model Graph, recognizing that architecture's specific structure (layers, modules, MoE routing, multi-tower fusion points). See [Fallback adapter](#fallback-adapter) for what happens without one.

**Monoid-mergeable**
A property of tile statistics: a coarser region's statistic can be computed directly from its constituent finer regions' statistics, without re-reading raw values. The basis for [level-of-detail streaming](/docs/core-concepts/level-of-detail-and-streaming).

**Outliner**
The tree view of a model's structure - the primary non-spatial way to navigate the address space, kept in sync with spatial selection in every 3D/2D view.

**Problems panel**
Where flagged diagnostics accumulate across a model - NaN/Inf detections, statistical outliers, import warnings, backend fallbacks - navigable with `F8`.

**RuntimeProbe**
The trait implemented by anything that can supply live runtime data to Tensormorph (a bundled local runner, a serving-framework plugin, or replay of a recorded `.tmrun` trace). Exposes capture points and breakpoints on the address space.

**Semantic Model Graph (SMG)**
The typed tree Tensormorph builds from a loaded checkpoint, produced by a `ModelAdapter`. Every view, selection, and query operates over the SMG, not over the raw checkpoint file format directly.

**Stale-note**
A flag Tensormorph raises when a loaded checkpoint's commit pin no longer matches the current state of the Lob history it points into.

**Tile**
The unit of data Tensormorph streams, statistics-computes, and renders at - a bounded region of a tensor, sized appropriately for the current level of detail.

**Tile statistics**
The set of precomputed, monoid-mergeable summaries (moments, extremes, norms, special-value counts, histogram) available for any tensor region without reading its raw values. See [Tensor Statistics](/docs/inspect-and-analyze/tensor-statistics).

**TQL (Tensor Query Language)**
Tensormorph's expression and query language, used for selection filters, breakpoint conditions, and saved queries. See [Expressions and Queries](/docs/reference/expressions-and-queries).

**View**
One of Tensormorph's rendering surfaces for a selection - 3D (Architecture, Layer Stack, Tensor Volume, MoE Expert Galaxy, Parameter Map, Diff, Morph, Runtime Flow), 2D (Matrix/Heatmap), or 1D (Distribution and related). Referred to as an "editor" in some page URLs for historical reasons, but "view" in product vocabulary.

**Weight-space pull request**
A Lob-side reviewable unit representing a proposed weight change, loadable and diffable from within Tensormorph even though Tensormorph doesn't perform the underlying merge itself.

**Workspace preset**
A named, full layout of views and panels suited to a task (Architecture, Compare, Morph, MoE, Runtime, and Performance are among the shipped presets), switchable as a unit.

## Related resources

-   [Model, Architecture, Layer and Module](/docs/core-concepts/model-architecture-layer-module) - the address-space hierarchy referenced throughout this glossary.
-   [Tensor Statistics](/docs/inspect-and-analyze/tensor-statistics) - full detail on tile statistics and mergeability.