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Recent Advances in Novel Training Approaches for Microwave Parametric Modeling Using Padé via Lanczos and EM Sensitivities

2022· article· en· W4282975696 on OpenAlex
Wei Liu, Jianan Zhang, Feng Feng, Qi‐Jun Zhang

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

Venue2022 Photonics & Electromagnetics Research Symposium (PIERS) · 2022
Typearticle
Languageen
FieldEngineering
TopicElectromagnetic Simulation and Numerical Methods
Canadian institutionsCarleton University
Fundersnot available
KeywordsParametric statisticsRobustness (evolution)Pole–zero plotArtificial neural networkAlgorithmTransfer functionSensitivity (control systems)MathematicsParametric modelParametric equationControl theory (sociology)Computer scienceGeometryArtificial intelligenceEngineeringElectronic engineering

Abstract

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This paper provides the recent advance in training approachs for microwave parametric modeling of passive components with changes of geometrical variables combining electromagnetic (EM) sensitivities and matrix Padé via Lanczos (MPVL). In this paper, the pole-zero-gain transfer function is used as the surrogate model of EM response of microwave components versus frequency. The relationships between geometrical parameters and the gain/zeros/poles are learned directly by artifical neural networks (ANN). MPVL algorithm is performed to compute/recompute the zeros/poles corresponding to different geometric parameters to generate training data. After recomputations, the indices of the zeros/poles not always have right correspondences with original indices, leading to an unstable prediction of the zeros/poles when geometrical parameters have a new change. A novel sensitivity-based zero/pole-matching algorithm is used to achieve the right correspondences between the zeros/poles at different geometrical variables. This method uses the EM sensitivities as an aid information for the moving direction of the zeros/poles, to match the zeros/poles and geometrical parameters that changes each time. Using the matched zeros/poles to train the neural network has reliable and fast predictions for large geometrical variations, which increases the robustness and accuracy of the surrogate model. Compared with those existing algorithms, this method can train a more accurate model in applications involving large geometrical variations.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

Full frame distilled prediction

Teacher imitation

Not calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.

metaresearch head score (Codex)0.003
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesMeta-epidemiology (narrow)
Consensus categoriesnone
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Simulation or modeling · Consensus signal: none
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.510
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0030.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0010.000
Bibliometrics0.0010.002
Science and technology studies0.0010.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.002
Insufficient payload (model declined to judge)0.0000.000

Machine scores (provisional)

The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.

Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.

Opus teacher head0.155
GPT teacher head0.354
Teacher spread0.199 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it