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HTML pages as messy data sources
Sometimes the only "API" is a website built for eyes, not for your dataframe: tables repeat for...
Amplitudes, tensor products, and phase-only gates
Tensor products multiply single-qubit amplitudes when the state stays separable; that is how you...
Encoding classical data into quantum states
Classical vectors become quantum states through deliberate encoding choices: basis labels for...
Kernels, baselines, and re-uploading
Kernel methods live on similarities, so honest evaluation compares quantum kernels to strong...
Kernel estimation in QML workflows
Once a feature map is fixed, the kernel is an operational quantity: overlaps, fidelities, and shot...
Entangling blocks in feature maps
Product encodings keep qubits nearly independent; entangling layers mix them so similarity can...
Overlap, fidelity, and simple feature-map kernels
Kernel entries are overlaps squared—probabilities if you measure the right basis. For analytic...
Route Optimization I: Domain Modeling, Constraints, and Local vs Global Decisions
Case setup: A route from Winterthur to Kreuzlingen is split into legs. Each leg has several...
Damage Regression I: Data Ingestion, Cleaning, and Vocabulary Mapping
Case setup: City-report platforms receive free-text damage descriptions with noisy punctuation and...
Feature Subset Optimization II: Heuristics, Baselines, and Validation Discipline
When exhaustive search is too expensive, a common practical approach is greedy forward selection....
Feature Subset Optimization I: Search Space Modeling and Feasibility Checks
Case setup: A classifier has n candidate features. Each feature can be included or excluded, so the...
Playing Cards with OOP: Card and Deck
Problem setup: Build a reusable model of a standard card deck for simulation and probability tasks....