Qkabrine: A Joint Architecture, Encoding, and Hyperparameter Search Framework for Quantum Machine Learning

• URL: http://arxiv.org/abs/2608.18152v1
• Date: Wed, 12 Aug 2026 08:54:19 GMT
• Title: Qkabrine: A Joint Architecture, Encoding, and Hyperparameter Search Framework for Quantum Machine Learning
• Abstract summary: qkabrine-automl is a Python package that treats architecture, encoding, model type, and hyper Parameters as a single, jointly searchable configuration space.<n>The package integrates trainability diagnostics, a Data Quantum Fisher Information Metric (DQFIM) estimate and a gradient barren-plateau monitor, directly into the evaluation loop.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Building a quantum machine learning (QML) model competitive with a classical baseline currently requires a practitioner to separately choose a circuit architecture, a data-encoding scheme, a model paradigm (kernel versus variational), and a set of training hyperparameters, then verify after the fact that the chosen circuit is even trainable. Existing QML libraries provide the primitives for this but not the search, and existing classical AutoML libraries provide the search but not the quantum-specific search space or diagnostics. We present qkabrine-automl, a Python package that treats architecture, encoding, model type, and hyperparameters as a single, jointly searchable configuration space, evaluated through one consistent harness regardless of which of five search strategies proposed the candidate. The package integrates trainability diagnostics, a Data Quantum Fisher Information Metric (DQFIM) estimate and a gradientmagnitude barren-plateau monitor, directly into the evaluation loop as an optional prescreening step, alongside expressibility and entangling-capability characterization, a post-search circuitsurgery pass for NISQ deployment, and OpenQASM export. We position this contribution against recent AutoQML frameworks that already automate parts of the QML pipeline, and report a small, fully reproducible illustrative run rather than a benchmark claim.

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