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arXiv research

A locally-built, LLM-digested index of recent arXiv papers in quant finance, geometry/topology, and statistical ML — keyword search served straight from SQLite on this machine.

169,051 papers · 148 categories

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48 results for Partial Image Generation

PFDL improves deep learning models' OOD generalization by decorrelating feature embeddings.

problem Out-of-distribution generalization in deep learning models.
method PFDL algorithm that optimizes feature decomposition network and image classification model.
result PFDL improves the accuracy of image classification models on OOD datasets.

This research uses Siamese networks to identify partial mouse brain images from the Allen atlas.

problem Identifying precise mouse brain microscopy images from the Allen atlas.
method Siamese Networks with contrastive learning to find corresponding atlas plates for partial images.
result Siamese CNNs achieved 25% TOP-1 and 100% TOP-5 accuracy in identifying brain slices from the Allen atlas.

Topic models (e.g., pLSA, LDA, SLDA) have been widely used for segmenting imagery. These models are confined to crisp segmentation. Yet, there are many images in which some regions cannot be assigned a crisp label (e.g., transition regions between a foggy sky and the ground or between sand and water at a beach). In the…

2015-11-09abs ↗pdf ↗

Paper proposes efficient method for evaluating Bayesian models in imaging.

problem Evaluation of Bayesian models in imaging when ground truth is unavailable.
method Novel combination of Bayesian cross-validation and data fission for unsupervised model selection and misspecification detection.
result Achieved excellent selection and detection accuracy with low computational cost.

Traditional classifiers can generate high-quality images comparable to generative models.

problem Separation between classifiers and generators in neural networks.
method Optimizing input gradients to produce images, using mask-based stochastic reconstruction, progressive-resolution technique, and distance metric loss.
result Traditional classifiers can generate high-fidelity images of 256imes imes256 resolution on ImageNet.

EnSF uses image inpainting to handle partial observations in data assimilation.

problem Data assimilation challenges with partial observations.
method EnSF integrates image inpainting with diffusion models to predict unobserved states.
result EnSF successfully tracks SQG dynamics with partial observations.

Paper proposes a weak supervision technique for CNN semantic segmentation of lung diseases using partially annotated data.

problem Creating annotated datasets for semantic segmentation of lung diseases is laborious and time-consuming.
method Proposes a weak supervision technique that utilizes partially annotated datasets to improve CNN semantic segmentation accuracy.
result Significantly improved segmentation accuracy using partially annotated datasets.

Let π:XMπ:\mathcal{X}\to M be a holomorphic fibration with compact fibers and LL a relatively ample line bundle over X\mathcal{X}. We obtain the asymptotic of the curvature of L2L^2-metric and Qullien metric on the direct image bundle π(LkKX/M)π_*(L^k\otimes K_{\mathcal{X}/M}) up to the lower order terms than kn1k^{n-1} for la…

2017-12-16abs ↗pdf ↗

A robot learns to classify images with limited perception using a layered reinforcement learning approach.

problem Image classification for robots with partial perception.
method Three-layer architecture using deep reinforcement learning, including meta-layer, action-layer, and classification-layer.
result The method achieves high accuracy on the MNIST dataset and provides explainability of the agent's decision-making process.

Topic models (e.g., pLSA, LDA, sLDA) have been widely used for segmenting imagery. However, these models are confined to crisp segmentation, forcing a visual word (i.e., an image patch) to belong to one and only one topic. Yet, there are many images in which some regions cannot be assigned a crisp categorical label (e.…

2016-12-28abs ↗pdf ↗

Mobile agents classify images via reinforcement learning and consensus.

problem Image classification using multiple mobile agents.
method Proposed network architecture for local belief formation and feature extraction. Decentralized consensus protocol using reinforcement learning.
result Effectiveness of the proposed framework demonstrated on MNIST dataset.

Generative models solve medical imaging inverse problems without needing paired data.

problem Reconstructing medical images from partial measurements.
method Score-based generative models trained on medical images, then sampling to reconstruct images consistent with measurements and physical model.
result Comparable or better performance in CT and MRI tasks, with improved generalization to unknown measurement processes.

We propose a solution to the image deconvolution problem where the convolution kernel or point spread function (PSF) is assumed to be only partially known. Small perturbations generated from the model are exploited to produce a few principal components explaining the PSF uncertainty in a high dimensional space. Unlike …

2012-03-21abs ↗pdf ↗

Proposes a new GAN architecture for generating data conditioned on partial information.

problem Generating data conditioned on partial ancillary information.
method Introduces a new Adversarial Network architecture and training strategy.
result The proposed method outperforms standard Conditional GANs in generating data under partial conditioning.

Paper offers robust recovery for 1-bit sensing with partial Gaussian circulant matrices.

problem Accurately recovering vectors from 1-bit measurements using structured matrices.
method Correlation-based optimization with randomly signed partial Gaussian circulant matrices and generative models.
result Recovery guarantees match those for i.i.d. Gaussian matrices but with faster computation.

Improved person detection in occluded conditions with AOS images.

problem Inaccurate classification of partially occluded people, animals, or objects.
method Combining multi-perspective images captured by Airborne Optical Sectioning (AOS) to achieve better precision and recall.
result Precision/recall of 96/93% for automated person detection.

BNCR-GAN improves GANs to generate clean images from degraded inputs.

problem Generating clean images from blurred, noisy, and compressed degraded inputs.
method Multiple-generator model with image, blur-kernel, noise, and quality-factor generators, using masking architectures and adaptive consistency losses.
result BNCR-GAN effectively learns clean image generators from degraded images without degradation parameters.

Paper proposes a classifier to improve medical image classification with limited data.

problem Limited training data leads to overfitting in medical image classification.
method Uses reinforcement learning to update classifier parameters with generalization feedback from a subset of training data.
result Improves classification performance and demonstrates generalized learning.

New method separates objects from images using deep neural networks trained to inpaint.

problem Fully self-supervised instance separation of occluded objects in images.
method Maximizes independence of two image regions given a fully self-supervised inpainting network.
result Method achieves similar segmentation performance to fully supervised methods on microscopy image datasets.

Geometric models improve feature extraction and equivariance in image generation.

problem Improving feature extraction at multiscale levels and reducing network complexity.
method Proposes a geometric generative model based on morphological PDEs and GANs, incorporating equivariance for geometric interpretability.
result Preliminary results show GM-GAN outperforms classical GANs on MNIST data.

Partial differential equations (PDEs) are indispensable for modeling many physical phenomena and also commonly used for solving image processing tasks. In the latter area, PDE-based approaches interpret image data as discretizations of multivariate functions and the output of image processing algorithms as solutions to…

2018-04-12abs ↗pdf ↗

DSRGAN learns independent structure and rendering without tuple supervision.

problem Learning disentangled representation for natural image generation without tuple supervision.
method Introducing an auxiliary domain with a common underlying-structure space, and designing a parallel generative network with a common Progressive Rendering Architecture.
result DSRGAN significantly outperforms state-of-the-art methods in disentanglability.

COCO-GAN generates images by parts using spatial coordinates, achieving state-of-the-art quality.

problem Generating full images from partial observations due to computational constraints.
method COCO-GAN uses conditional coordination to generate images by parts based on spatial coordinates, with a generator and discriminator learning to justify realism.
result COCO-GAN produces state-of-the-art-quality full images during inference, enabling novel applications like beyond-boundary generation and panorama generation.

Boomerang generates nonidentical images similar to input on image manifolds.

problem Generating nonidentical images similar to input on image manifolds.
method Adding noise to input image, moving closer to latent space, and mapping back through partial reverse diffusion.
result Boomerang generates nonidentical images similar to input on image manifolds.

In Ahlfors' covering surface theory, it is well known that there exists a positive constant hh such that for any nonconstant holomorphic mapping f:f:% \barΔ\to S, if f(Δ){0,1,}=,f(Δ)\cap \{0,1,\infty \}=\emptyset , then% A(f,Δ)\leq hL(f,\partial Δ),% where ΔΔ is the disk z<1|z|<1 in C,\mathbb{C}, SS is the unit Riemann sphere,…

2009-03-20abs ↗pdf ↗

R-PLS improves analysis of brain functional connectivity matrices.

problem Improving analysis of functional connectivity matrices in brain imaging.
method Introducing R-PLS, a generalization of PLS for symmetric positive definite matrices.
result R-PLS identifies key functional connections in brain imaging datasets.

We show that the notion of 33-hyperconvexity on oriented flag manifolds defines a partial cyclic order. Using the notion of interval given by this partial cyclic order, we construct Schottky groups and show that they correspond to images of positive representations in the sense of Fock and Goncharov. We construct poly…

2018-07-13abs ↗pdf ↗

A novel capsule network model improves surrogate modeling and uncertainty quantification from sparse data.

problem Surrogate modeling and uncertainty quantification of systems from sparse data.
method Adapted Capsule Network (CapsNet) architecture into image-to-image regression encoder-decoder network.
result The proposed approach accurately, efficiently, and robustly predicts responses for arbitrary diffusion fields.

Study character varieties of tangles to map immersed curves in the pillowcase.

problem Characterizing holonomy-perturbed traceless SU(2) character varieties.
method Examining marked tangles as endomorphisms in the cobordism category and using holonomy-perturbed traceless character variety functor.
result Endomorphisms of immersed curves in the pillowcase have the same image.

The paper explores how neural networks generalize differently from natural and medical images.

problem Discrepancies in generalization error between natural and medical images.
method Established and empirically validated a generalization scaling law with respect to intrinsic dataset properties.
result Higher intrinsic 'label sharpness' of medical images leads to higher adversarial vulnerability.