InterviewsVector
Capability spine

Arc 04 · AI Engineer

Neural Systems from Computation Graphs

Build neural networks as computation graphs with local derivative contracts, then diagnose optimization and representation failures.

Exit capability: Implement, test, and debug a neural training loop from first principles.

Mapped lessons
7
Published now
7
Full-arc estimate
16 hours
Last edited
2026-08-25

Lesson sequence

Live units open into complete labs. Planned units stay visible to show the dependency path, but intentionally have no detail route. A withdrawn unit is retained only at its previously advertised URL and is not presented as live.

  1. 01

    A Neuron Is a Parameterized Decision Surface

    Live

    Connect affine maps and nonlinearities to representation capacity.

    Concept labFoundation80 min estimateArtifact: Neuron representation audit

  2. 02

    Computation Graphs Make Learning Inspectable

    Live

    Represent forward values, dependencies, and local derivatives explicitly.

    Build labIntermediate90 min estimateArtifact: Computation graph trace validator

  3. 03

    Backpropagation as Local Contracts

    Live

    Derive reverse-mode autodiff as small, testable vector-Jacobian products rather than one mysterious global formula.

    Build labIntermediate120 min estimateArtifact: Tiny autodiff engine and tests

  4. 04

    Read Optimization Dynamics

    Live

    Use loss curves, gradient statistics, and parameter updates to separate data, optimization, and capacity failures.

    Failure labIntermediate105 min estimateArtifact: Optimization dynamics diagnostic

  5. 05

    Normalization and Residual Paths

    Live

    Understand why signal and gradient paths shape trainability in deep networks.

    Concept labAdvanced105 min estimateArtifact: Signal path contract

  6. 06

    Convolutions and Locality as an Inductive Bias

    Live

    Build a convolution and connect weight sharing to images, audio, and structured grids.

    Build labIntermediate105 min estimateArtifact: Convolution equivariance audit

  7. 07

    Neural Training Incident: Loss Becomes NaN

    Live

    Trace a realistic failure through inputs, precision, activations, gradients, and optimizer state.

    Failure labAdvanced110 min estimateArtifact: Neural training incident runbook