Frequently asked questions

Is omnibias a replacement for autodiff?

It provides alternative representations for supported spatial derivatives. Ordinary parameter autodiff remains part of training. Choose a path by the requested quantity and supported model.

Is every result exact?

No. Closed-form expressions are evaluated in floating point; numerical and stochastic methods have their own errors. A certificate concerns a stated model, domain, and assumptions. Read scope.

Are backends bit-identical?

Shared coefficients do not imply universal floating-point identity. Match dtype, inputs, path, and operation ordering, then measure agreement. See comparison guidance.

Why do install commands use --pre?

The main examples target the current RC/alpha family. Exact pins select the documented contracts. Stable consumer constraints are separate; see installation.

Where are the old application packages?

They are outside the retained 16-package substrate. Legacy API links provide migration notices. See the ecosystem.

Can I use it commercially?

Read the license for the package and version you install. Apache-2.0 and AGPL-or-commercial are distinct grants. Commercial use is not itself a universal requirement to purchase a commercial agreement.

How do I get help?

Bring an importable minimal example, exact package versions, shapes, dtype, backend, and observed versus expected result. Contact info@derivon.ai.