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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.

169,291 papers · 148 categories

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20395978 · Jul 202619922001200920182026
48 results for TT decomposition

The paper analyzes conditions for low-rank tensor completion using TT decomposition.

problem Conditions for finite completability of low-rank tensors.
method Algebraic geometric analysis on the TT manifold, focusing on the independence of polynomials defined by sampling patterns and TT decompositions.
result Deterministic and probabilistic conditions for finite completability of tensors with high probability.

Paper addresses statistical efficiency and scalability in tensor train decomposition.

problem Statistical inefficiency and scalability issues in tensor train decomposition.
method Introduces a convex relaxation and alternating optimization method with randomization.
result Derives error bounds and demonstrates method's performance on real data.

Study geodesic X-ray transforms on hyperbolic surfaces, proposing new reconstruction methods.

problem Inverting geodesic X-ray transforms for symmetric tensor fields on asymptotically hyperbolic surfaces.
method Developed a decomposition theorem for m-tensor fields, used Guillemin-Kazhdan operators and 0-calculus, and provided explicit reconstruction methods.
result Explicit reconstruction methods for even tensor fields from their X-ray transform or normal operator.

Tensorized Rademacher projections outperform Gaussian projections in reducing tensor dimensions.

problem Reducing the dimension of high-dimensional tensors for machine learning.
method Tensorized Rademacher random projections using Tensor Train decomposition.
result Tensorized Rademacher projections can replace Gaussian projections in tensor compression.

Tensor networks constrain kernel machines to Gaussian processes.

problem Speeding up kernel machines with reduced model complexity.
method Proving CPD and TT-constrained models recover Gaussian processes with i.i.d. priors.
result TT-constrained models exhibit more Gaussian process behavior than CPD for the same parameters.

We introduce a new parameterization method for deep learning layers using spectral tensor train decomposition.

problem Efficiency and stability in deep learning models with weight matrix compression.
method Spectral Tensor Train Parameterization (STTP) of weight matrices.
result Improved compression and training stability in neural networks.

Develops a new tensor classification method for high-dimensional data.

problem Efficient learning algorithms exploiting tensorial structure in high-dimensional multi-way arrays.
method Tensor Train Multi-way Multi-level Kernel (TT-MMK) combining Canonical Polyadic decomposition, Dual Structure-preserving Support Vector Machine, and Tensor Train approximation.
result The TT-MMK method provides higher prediction accuracy and is more reliable computationally compared to other techniques.

Proposes a new tensor grid method for image completion.

problem Image completion from missing data.
method Low-rank tensor grid with two-stage density matrix renormalization group initialization and alternating least squares factorization.
result The proposed tensor grid method outperforms existing methods in image recovery accuracy.

TensorGuide improves LoRA efficiency and expressivity through joint tensor-train optimization.

problem Limited expressivity and generalization of standard LoRA.
method TensorGuide uses a unified tensor-train structure with controlled Gaussian noise to generate correlated low-rank matrices.
result TensorGuide achieves superior accuracy and scalability with fewer parameters compared to standard LoRA and TT-LoRA.

The main construction of this paper contains a serious error, and I am withdrawing it. I owe Andrew Stacey and Ralph Cohen thanks for seeing the problem; in particular, Stacey has shown that the projections constructed in §3.1 will fail in general to have constant rank, so the family TV{\bf T}V of vector spaces defined…

2001-09-13abs ↗pdf ↗

Tensor networks improve data privacy and robustness in convolutional neural networks.

problem Improving data privacy and robustness in convolutional neural networks.
method Tensor network decomposition for data partitioning and adversarial defense.
result Tensor networks can protect data privacy and resist adversarial attacks.

A new method uses CPD to efficiently model feature interactions in non-sequential data.

problem Efficiently modeling feature interactions in non-sequential data with high computational and memory costs.
method Implicitly represent model parameters as a tensor, factorize into a compact Tensor Train (TT) format, and use Canonical Polyadic (CP) Decomposition for invariance to feature ordering.
result The proposed CP-based predictor outperforms other TN-based predictors on sparse data and matches neural network performance on dense non-sequential tasks.

Using nonlinear pde techniques, we construct a new family of globally smooth tt* structures. This includes tt* structures associated to the (orbifold) quantum cohomology of a finite number of complex projective spaces and weighted projective spaces. The existence of such "magical solutions" of the tt* equations, namely…

2010-10-10abs ↗pdf ↗

The paper proves an isomorphism between tttt^* structures of Landau-Ginzburg and Calabi-Yau models.

problem Establishing an isomorphism between tttt^* structures of different geometries.
method Using Landau-Ginzburg models and Calabi-Yau hypersurfaces, proving the isomorphism via the big residue map.
result An isomorphism between tttt^* structures of Landau-Ginzburg and Calabi-Yau models is proven.

Existence proof for Einstein equations with small TT-tensor and vanishing Yamabe invariant.

problem Existence of metrics with vanishing Yamabe invariant and small TT-tensor.
method Existence proof for Einstein conformal constraint equations assuming small TT-tensor and vanishing Yamabe invariant.
result Existence result for Einstein equations under specified conditions.

We study transverse-tracefree (TT)-tensors on conformally flat 3-manifolds (M,g)(M,g). The Cotton-York tensor linearized at gg maps every symmetric tracefree tensor into one which is TT. The question as to whether this is the general solution to the TT-condition is viewed as a cohomological problem within an elliptic com…

1996-06-18abs ↗pdf ↗

Solves constant pre-factor problem for tt*-Toda equations using asymptotic data and symplectic structures.

problem Constant pre-factor problem for the tt*-Toda equations.
method Explicit evaluation using asymptotic data and introduction of symplectic structures.
result Preservation of symplectic structures by Riemann-Hilbert correspondence for wider class of solutions.

End-to-end TTS framework uses hard alignment to improve accuracy.

problem End-to-end TTS systems struggle with accurate alignment between input text and output acoustic features.
method Proposes a constrained alignment scheme with hard monotonic alignments, marginalized during training.
result Improves alignment learning and prediction in end-to-end TTS systems.

New surfaces with conjugate points have global blow-down maps in their TT spaces.

problem Constructing global blow-down maps for surfaces with conjugate points.
method Explicit construction of a family of non-trapping Riemannian surfaces with global blow-down maps.
result Global blow-down maps exist for some non-simple surfaces with conjugate points.

Proposes Textual Echo Cancellation to improve speech recognition.

problem Improving speech recognition performance and user experience for smart devices.
method A novel sequence-to-sequence model with multi-source attention that processes both the microphone mixture signal and source text of TTS playback.
result Demonstrates enhanced speech recognition performance and reduced latency.

Representation mixing combines character and phoneme inputs for flexible TTS synthesis.

problem Limited control over pronunciation in character or phoneme-based TTS systems.
method Representation mixing combines multiple linguistic inputs in a single encoder.
result Flexibility in choosing between character, phoneme, or mixed representations during inference.

Investigates neural TTS systems for Japanese and English.

problem Improving neural TTS systems for high-quality speech synthesis.
method Comparative study of neural sequence-to-sequence TTS vs. DNN pipeline TTS, varying model architecture, parameter size, and language.
result A neural sequence-to-sequence TTS system requires sufficient model parameters and a powerful encoder for high-quality speech synthesis.

New Lie-theoretic definition of tt*-Toda equations with remarkable structure.

problem Defining tt*-Toda equations for any complex simple Lie algebra.
method Topological-antitopological fusion, isomonodromic deformations, Kostant's theory, Steinberg's theory.
result Remarkable structure of Stokes data for tt*-Toda equations.

The paper describes solutions to the tt* equations using various mathematical methods.

problem Solving the tt* equations and understanding their global and local properties.
method Combination of p.d.e., isomonodromic deformations, and loop groups.
result Explicit computation of Stokes data and connection matrix for global solutions.