System and method for predictive analysis of 2-dimensional crystal structures
AssigneeConstructor Technology AG
InventorsAndrey Ustyuzhanin, Egor Shibaev, Laurent Dedenis, Stanislav Protasov, Serg Bell, Nikolay Dobrovolskiy
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Abstract
The present invention provides a system and method for applying Siamese Neural Networks (“SNNs”) to model, characterize, and predict the effects of defects on material properties, specifically for 2-dimensional (“2D”) crystals such as transition metal dichalcogenides (“TMDCs”). The present invention provides a method for predicting physical properties with strong performance across both low and high-defect density scenarios.
Claims20
A system for predicting physical properties of two-dimensional crystals with defect configurations, comprising:
- at least one machine learning model used to generate invariant embeddings of defect configurations in two-dimensional crystal lattices;
- said at least one machine learning model applying a training methodology to defect recognition;
- a Siamese Neural Network (SNN) trained on labeled pairs of defect placements, wherein said labeled pairs of defect placements comprise positive pairs representing identical configurations derived through symmetry operations and negative pairs representing distinct configurations with similar base descriptors;
- and
- a distance-based loss function configured to optimize said embeddings for classification accuracy;
- a base descriptor computationally generated for defect configurations in two-dimensional crystal lattices;
- a convolutional neural network architecture utilizing circular padding to ensure consistent feature representation during periodic translations of input data, enhancing invariance to defect placements;
- a predictor of physical properties of two-dimensional materials;
- a retrieval of lattice configurations based on said embeddings;
- a generalized approach for invariant embedding generation that applies to various two-dimensional materials and accommodates different defect densities;
- and
- a designing of two-dimensional crystal structures.
A method for generating invariant embeddings of defect configurations in two-dimensional crystal lattices using a machine learning model, the method comprising:
- utilizing a neural network to create embeddings invariant to symmetry operations specific to a lattice structure;
- employing a contrastive learning framework to ensure embeddings of equivalent configurations are close in an embedding space, while non-equivalent configurations are distant;
- generating invariant embeddings of defect configurations in two-dimensional crystal lattices using a machine learning model;
- training a Siamese Neural Network on labeled pairs of defect placements;
- optimizing said embeddings for classification accuracy through a distance-based loss function;
- computationally generating a base descriptor for defect configurations in two-dimensional crystal lattices;
- training for machine learning models applied to defect recognition;
- utilizing circular padding within a convolutional neural network architecture to ensure consistent feature representation during periodic translations of input data, enhancing invariance to defect placements;
- predicting physical properties of two-dimensional materials;
- retrieving lattice configurations based on embeddings;
- applying invariant embedding generation to various two-dimensional materials and accommodates different defect densities;
- and
- designing two-dimensional crystal structures for generation.
A system for predicting physical properties of two-dimensional crystals with defect configurations, comprising:
- at least one machine learning model used to generate invariant embeddings of defect configurations in two-dimensional crystal lattices;
- said at least one machine learning model applying a training methodology to defect recognition;
- a Siamese Neural Network trained on labeled pairs of defect placements;
- a distance-based loss function to optimize the embeddings for classification accuracy;
- a base descriptor computationally generated for defect configurations in two-dimensional crystal lattices;
- a convolutional neural network architecture utilizing circular padding to ensure consistent feature representation during periodic translations of input data, enhancing invariance to defect placements;
- wherein said convolutional neural network architecture includes three convolutional layers and three fully connected layers;
- a predictor of physical properties of two-dimensional materials;
- a retrieval of lattice configurations based on embeddings;
- a generalized approach for invariant embedding generation that applies to various two-dimensional materials and accommodates different defect densities;
- wherein application and accommodation includes standardizing input representations and preserving invariance under symmetry operations regardless of defect count;
- a designing of two-dimensional crystal structures;
- and
- an ability to enhance a classification of defect configurations by concatenating a base descriptor of defects, embeddings generated from multiple stages of neural network processing;
- and distinct components derived from hierarchical training.
Dependencies are inferred from the claim text.