tool.io Build: (820+ tools)

AI / ML

Artificial intelligence and machine-learning tools.

Approximation

Vertex-Cover 2-Approximation Demonstrator Build a maximal matching and select both endpoints to obtain an unweighted vertex cover with a factor-2 guarantee.

Benchmark

AI Model Benchmarks Compare AI model benchmark scores, context limits, open-weight availability, and provider prices with source-linked evidence.

Classification

Accuracy Calculator Calculate classification accuracy from true and false outcome counts.
Balanced Accuracy Calculator Calculate the mean of sensitivity and specificity.
F1 Score Calculator Calculate the harmonic mean of classification precision and recall.
Precision Calculator Calculate positive predictive value from true and false positive counts.
Recall Calculator Calculate sensitivity from true positive and false negative counts.
Specificity Calculator Calculate true negative rate from true negative and false positive counts.

Clustering

Data Analysis

Archetypal Analysis Demonstrator Approximate multivariate observations as convex mixtures of archetypes that are themselves mixtures of the observations.

Data Mining

Estimation

Particle Filter Estimator Estimate a one-dimensional hidden state with a reproducible bootstrap particle filter.

Game Search

Game Theory

Best-Response Dynamics Demonstrator Iteratively update two pure strategies to deterministic best responses and expose equilibria or cycles.

Generate

Graph

Machine Learning

Matrix

Nonnegative Matrix Factorization Demonstrator Factor a small nonnegative matrix with seeded multiplicative-update NMF.

Metrics

Neural Network

Feedforward Neural Network Demonstrator Run one dense neural-network layer with selectable activation entirely in the browser.

Online Algorithm

Online Ski-Rental Algorithm Demonstrator Compare a deterministic online rent-or-buy strategy with the optimal decision made in hindsight.

Optimization

Pathfinding

A* Pathfinding Visualizer Find and inspect a shortest path through a JSON grid using A* search.

Probability

Bayesian Network Simulator Draw reproducible ancestral samples from a Boolean Bayesian network and estimate its marginals.

Regression

Ridge Regression Demonstrator Fit a one-feature ridge regression with an unpenalized intercept.

Reinforcement Learning

Roadmap

Search

Beam Search Visualizer Expand a scored tree breadth-first while retaining only the highest-scoring paths at each depth.

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