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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.

168,932 papers · 148 categories

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48 results for Code Repair

Graph-based approach repairs programs from diagnostic feedback.

problem Learning to repair programs from limited labeled data and compiler error messages.
method Introduces program-feedback graph and graph neural network for reasoning, and self-supervised learning with unlabeled programs.
result DrRepair significantly outperforms prior work, achieving high repair rates.

This paper presents a novel end-to-end approach to program repair based on sequence-to-sequence learning. We devise, implement, and evaluate a system, called SequenceR, for fixing bugs based on sequence-to-sequence learning on source code. This approach uses the copy mechanism to overcome the unlimited vocabulary probl…

2018-12-24abs ↗pdf ↗

MACER accelerates error repair by modularly identifying and applying fixes.

problem Automated compilation error repair for novice programmers.
method Modular segregation of repair process into identification and application, using discriminative learning techniques.
result MACER outperforms existing methods by 20% on popular errors and is competitive on all error types.

In this study we model the warranty claims process and evaluate the warranty servicing costs under non-renewing and renewing free repair warranties. We assume that the repair time for rectifying the claims is non-zero and the repair cost is a function of the length of the repair time. To accommodate the ageing of the p…

2018-03-02abs ↗pdf ↗

Due to its potential to improve programmer productivity and software quality, automated program repair has been an active topic of research. Newer techniques harness neural networks to learn directly from examples of buggy programs and their fixes. In this work, we consider a recently identified class of bugs called va…

2019-04-03abs ↗pdf ↗

New method to recover over-parameterized models corrupted during estimation.

problem Recovering statistical models corrupted after initial estimation.
method Robust estimation using over-parameterized models and redundancy.
result Stochastic gradient descent is well-suited for model repair, but sparsity is generally not repairable.

RVAE detects and repairs corrupted cells in mixed-type tabular data.

problem Outlier detection and repair in mixed-type tabular data.
method Robust Variational Autoencoder (RVAE) learns the joint distribution of clean data and identifies outlier cells.
result RVAE outperforms state-of-the-art methods in cell outlier detection and repair for tabular data.

Proposes a method to repair arbitrage in option prices data.

problem Arbitrage in option price data can lead to poor performance or failure of financial applications.
method Formulates data repair as a linear programming (LP) problem to minimise price changes within bid and ask price bounds.
result The proposed method gives sparse perturbations on data and improves model calibration with enhanced robustness and reduced calibration error.

CLSVAE repairs systematic errors in images with minimal labeled data.

problem Repairing systematic errors in data, especially in images.
method CLSVAE models inliers as a smaller latent space representation, separating inlier and outlier patterns.
result CLSVAE achieves superior repairs with less than 2% labeled data, outperforming other methods.

REPAIR mitigates variance collapse to enable linear interpolation between SGD solutions.

problem Linear interpolation between SGD solutions is difficult due to variance collapse in permuted activations.
method REPAIR rescales preactivations of interpolated networks to mitigate variance collapse.
result 60%-100% relative barrier reduction across various architectures and tasks.

SnareNet adds repair layers to neural networks to ensure outputs meet physical constraints.

problem Unconstrained neural network predictions violate physical or safety requirements.
method SnareNet appends a differentiable repair layer that navigates constraints to produce feasible outputs.
result SnareNet consistently improves objective quality while satisfying constraints more reliably.

CROP verifies clean prefixes in reasoning traces, improving downstream repair accuracy.

problem Uncertainty in reasoning traces prevents full certification of entire responses.
method CROP selects a calibrated threshold to certify the longest prefix with low risk proxies.
result CROP improves downstream repair accuracy by preserving valid reasoning and discarding misleading suffixes.

CASP improves portfolio optimization by considering asset covariance.

problem Infeasibility in cardinality-constrained portfolio optimization.
method CASP uses volatility-normalized selection and covariance-aware projection.
result CASP-Basic delivers lower portfolio variance than standard Euclidean repair.

We present a new application and covering number bound for the framework of "Machine Learning with Operational Costs (MLOC)," which is an exploratory form of decision theory. The MLOC framework incorporates knowledge about how a predictive model will be used for a subsequent task, thus combining machine learning with t…

2011-04-27abs ↗pdf ↗

New seq2seq model can copy entire spans, outperforming simpler models in editing tasks.

problem Editing documents or source code using seq2seq models with explicit token copying.
method Extended seq2seq model capable of copying entire input spans to output in one step, new training and inference methods.
result New model consistently outperforms simpler baselines in editing tasks of natural language and source code.

Neural network identifies undeclared variables and infers their types.

problem Undeclared variable errors in programs.
method Trained on structural semantic details of AST, identifies and infers types of undeclared variables.
result Correctly identified and inferred types for 80% of programs with undeclared variable errors.

The above named paper has been withdrawn. A colleague has observed a gap in the proof of isotopy invariance, which can be repaired by reducing the coefficients (which lie in (1/6)Z) of the antisymmetric kanji with chords incident with more than one component modulo 8Z. An analogous issue arises in considering the effec…

2005-10-20abs ↗pdf ↗

Many modern data-intensive computational problems either require, or benefit from distance or similarity data that adhere to a metric. The algorithms run faster or have better performance guarantees. Unfortunately, in real applications, the data are messy and values are noisy. The distances between the data points are …

2017-10-29abs ↗pdf ↗

Algorithms learned from data are increasingly used for deciding many aspects in our life: from movies we see, to prices we pay, or medicine we get. Yet there is growing evidence that decision making by inappropriately trained algorithms may unintentionally discriminate people. For example, in automated matching of cand…

2017-08-02abs ↗pdf ↗

This paper addresses the problem of predicting duration of unplanned power outages, using historical outage records to train a series of neural network predictors. The initial duration prediction is made based on environmental factors, and it is updated based on incoming field reports using natural language processing …

2018-04-03abs ↗pdf ↗

Optimal pre-processing reduces disparate impact by minimizing total variation distance.

problem Achieving fairness in data outputs based on protected attributes.
method Using pre-processing to enforce fairness, minimizing total variation distance between pre-processed and original data distributions.
result The problem of fairness can be formulated as a linear program, efficiently solvable.

The theory of quantum computation can be constructed from the abstract study of anyonic systems. In mathematical terms, these are unitary topological modular functors. They underlie the Jones polynomial and arise in Witten-Chern-Simons theory. The braiding and fusion of anyonic excitations in quantum Hall electron liqu…

2001-01-04abs ↗pdf ↗

New methods for equity fund selection and portfolio construction using mutual fund top holdings.

problem Classic equity fund selection and portfolio construction problems.
method Propose an easy-to-implement framework to produce a long-short portfolio from mutual fund top holdings.
result Generate impressive results and show statistical evidence.

The complement of an arrangement A of a finite number of affine hyperplanes in complex n-space has the structure of a poset of spaces indexed by the intersection poset, L(A). The space corresponding to G in L(A) is homotopy equivalent to the complement of the hyperplanes in the central arrangement A_G normal to G. This…

2015-02-12abs ↗pdf ↗

New representations solve a gap in projective structure proof.

problem Prove every non-elementary surface group representation is a projective structure holonomy.
method Define pentagon representations and show they are non-elementary and not Schottky decomposable.
result Repair Gallo-Kapovich-Marden proof by showing pentagon representations arise as holonomies.

New AI method improves anomaly detection across different IIoT sensors.

problem Poor performance of anomaly detection models when applied to different machines.
method Robust AI method using pre-processing and multiple models on different pumps.
result Models perform well across different environments and types of pumps.

MODEF combines denoising and verification to defend against adversarial attacks.

problem Vulnerability of deep neural networks to adversarial inputs.
method Cross-layer model diversity ensemble combining unsupervised denoising and supervised verification.
result MODEF achieves remarkable defense success rates against black-box attacks.

PrIU optimizes machine learning model updates after data cleaning.

problem Incrementally updating machine learning models after removing problematic training samples.
method Provenance-based approach for efficient model parameter updates.
result PrIU-opt achieves up to two orders of magnitude speed-up compared to retraining from scratch.

Neuron Shapley identifies key neurons in deep networks, improving model accuracy and fairness.

problem Identifying responsible neurons in deep networks for better model performance and fairness.
method Neuron Shapley framework quantifies neuron contributions, accounting for interactions.
result Removing just 30 critical filters can destroy model accuracy, revealing network function.