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Fast Track (Essentials)

18 problems·~4h·3 stages

The shortest route to a working mental model of ML: eighteen problems that cover what the rest of the platform builds on. In a single evening you will implement scaling, matrix products, a derivative, expectation, linear regression, softmax, gradient descent, and one backprop pass. Perfect for a first taste of DeepForge.

Your progress

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Path readiness 0%Easy 0% · Medium 0% · Hard 0%

Continue path · Vector Dot Product

What you will learn

  • Cover the mathematics every ML interview assumes
  • Fit your first regression and classify with softmax
  • Run a gradient-descent step and one backprop pass

1Math in an Hour

0/6

The minimum mathematical kit: dot products, matrix multiplication, numerical derivatives, expected value, variance, and feature standardization.

Stage checkpoint

0/2 to pass

A checkpoint is a short retrieval test drawn from this stage: solve 2 of 3 from memory to mark the stage complete. The stage stays open either way.

Tried this set and did not pass? Record it — the next set swaps in fresh problems from the same stage.
LabRecommended next stepNoisy QuadraticMedium

2First Models

0/6

Put the maths to work: MSE, linear regression, numerically stable softmax, gradient descent, accuracy, and cosine similarity.

Stage checkpoint

0/2 to pass

A checkpoint is a short retrieval test drawn from this stage: solve 2 of 3 from memory to mark the stage complete. The stage stays open either way.

Tried this set and did not pass? Record it — the next set swaps in fresh problems from the same stage.
LabRecommended next stepLogistic Regression, From ScratchEasy

3One Layer Deeper

0/6

See how networks actually learn: ReLU, backprop, k-means, k-fold splits, an SGD weight update, and the R-squared score.

Stage checkpoint

0/2 to pass

A checkpoint is a short retrieval test drawn from this stage: solve 2 of 3 from memory to mark the stage complete. The stage stays open either way.

Tried this set and did not pass? Record it — the next set swaps in fresh problems from the same stage.
LabRecommended next stepXOR BoundaryHard

Capstone

Contest

Close the path with one real artifact from the catalog.

Warm-up Sprint

Ten minutes, six easy openers: a check that the essentials stuck.