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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.

169,181 papers · 148 categories

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48 results for corpus replication

Researchers solve word2vec's Corpus Replication Task to understand relational word similarities.

problem Understanding how word2vec captures relational similarities in word embeddings.
method Propose a Corpus Replication Task to generate input text for word2vec that outputs specific target relations.
result Demonstrates that word2vec can capture relational similarities in word embeddings.

RUSLAN is a large Russian speech corpus for text-to-speech.

problem Lack of high-quality annotated Russian speech data for text-to-speech.
method Developed a large annotated Russian speech corpus and trained a neural network for text-to-speech synthesis.
result Synthesized speech quality evaluated with MOS scores: 4.05 for naturalness, 3.78 for intelligibility.

New study on replicability and stability in machine learning algorithms.

problem Ensuring consistent results in machine learning models without fixing randomness.
method Introduced global stability and list replicability concepts, proving their equivalence and boosting list replicability.
result Global stability can only be achieved weakly, while list replicability can be boosted to achieve high probability of consistent results.

Study on computational aspects of replicable learning, bridging statistical and algorithmic perspectives.

problem Understanding the computational connections between replicability and various learning paradigms.
method Design of replicable learners, lifting framework, and transformation techniques.
result Efficient replicable learners for specific learning problems under various distributions.

ClovaCall introduces a new Korean call speech corpus for contact centers.

problem Lack of large-scale call-based speech corpora for Korean dialog scenarios.
method Development of a new large-scale Korean call-based speech corpus (ClovaCall) in a restaurant reservation domain.
result Validation of the dataset with ASR models shows its effectiveness.

New algorithm prevents strategic replication in multi-armed bandit problems.

problem Strategic replication by agents can exploit bandit algorithms' balance.
method Designs Hierarchical UCB (H-UCB) and Robust Hierarchical UCB (RH-UCB) algorithms.
result Achieves O(lnT)O(\ln T)-regret and sublinear regret in realistic scenarios.

Extends super-replication theorem with dynamic strategies and transaction costs.

problem Dynamic super-replication under proportional transaction costs.
method Generalizes admissible strategies and defines a well-defined super-replication price process.
result Well-defined super-replication price process in dynamic setting.

Corpus poisoning can manipulate word meanings in word embeddings, affecting natural language processing tasks.

problem Controlling word meanings via corpus modifications.
method Developed an explicit expression over corpus features to control word embeddings.
result Demonstrated the ability to manipulate word meanings in word embeddings, affecting various downstream tasks.

Study replicability in high-dimensional statistics, resolving open problems.

problem Ensuring consistent results in high-dimensional statistical tasks.
method Introduced replicable learning algorithms and established computational and statistical equivalence with high-dimensional isoperimetric tilings.
result Matching sample complexity upper and lower bounds for replicable mean estimation and coin problem.

Paper proposes a new method to detect node replication attacks in Vehicular Ad-hoc Networks.

problem Node replication attacks in Vehicular Ad-hoc Networks.
method Adapted statistical methodology for detecting node replication attacks.
result New method outperforms state-of-the-art techniques in detecting node replication attacks.

The UN General Debate Corpus analyzes speeches from UN member states to reveal their political positions.

problem Lack of data on state preferences in international politics.
method Text analysis of over 7,700 speeches from 1970-2016.
result Demonstrates how the UN General Debate Corpus can reveal country positions on various policy dimensions.

In this work we introduce the notion of fully incomplete markets. We prove that for these markets the super-replication price coincide with the model free super-replication price. Namely, the knowledge of the model does not reduce the super-replication price. We provide two families of fully incomplete models: stochast…

2015-08-21abs ↗pdf ↗

We study super--replication of contingent claims in markets with fixed transaction costs. This can be viewed as a stochastic impulse control problem with a terminal state constraint. The first result in this paper reveals that in reasonable continuous time financial market models the super--replication price is prohibi…

2016-10-28abs ↗pdf ↗

Improved embeddings by topic-sensitive attention on large corpora.

problem Capturing sense of words in limited corpora using pretrained embeddings.
method Topic-sensitive attention on large topic-rich corpora to correct sense drift in pretrained embeddings.
result Limited corpus augmentation is more effective than adapting pretrained embeddings.

Adaptive replication improves stochastic function optimization.

problem Challenges in accurately estimating functions with high variance.
method Trust-region-based Bayesian optimization with adaptive replication.
result Adaptive replication substantially improves solution accuracy and efficiency.

Unified framework improves cross-corpus EEG emotion recognition by aligning prototypes and refining decision boundaries.

problem Cross-corpus EEG emotion recognition suffers from performance degradation due to physiological variability and device inconsistencies.
method Prototype-driven Adversarial Alignment (PAA) framework with three configurations: local, contrastive, and boundary-aware.
result State-of-the-art performance improvements across four cross-corpus evaluation protocols.

Replicable clustering algorithms for k-medians, k-means, and k-centers are proposed.

problem Designing clustering algorithms that produce the same partition on repeated runs under the same distribution.
method Utilizing approximation routines for combinatorial clustering problems in a black-box manner.
result Replicable algorithms for statistical kk-medians, kk-means, and kk-centers with specified approximation and sample complexities.

Unified valuation theory for credit risk, defaults, and funding costs.

problem Valuation under credit risk, defaults, and funding costs.
method Unified valuation theory expanding replication approach to incorporate credit risk, defaults, and funding costs.
result Clarifies the relationship between the adjusted cash flows approach and the replication approach.

The paper prices long-term options with a reflecting barrier model.

problem Pricing long-term options with asset price limits.
method Model asset price as geometric Brownian motion with a lower reflecting barrier, pricing options using compound options.
result Option prices can be determined using standard risk-neutral arguments, and hedging strategies are available.

Efficient algorithms improve learning of large-margin halfspaces.

problem Learning large-margin halfspaces efficiently and reproducibly.
method Design of efficient, dimension-independent, polynomial-time algorithms; SGD-based approach; DP-to-Replicability reduction.
result Improved sample complexity compared to previous algorithms, with optimal sample complexity for one algorithm.

This paper studies robust payoff allocation in submodular games, especially against replication.

problem Payoff allocation in submodular games, especially robustness against replication.
method Systematically studied replication manipulation in submodular games, introduced replication robustness metric, and validated with empirical ML data market.
result Conditions characterizing robustness of semivalues in submodular games.

Buy-and-hold strategy optimal for incomplete markets.

problem Optimal super-replication of Markovian claims in fully incomplete markets.
method Analyzes fully incomplete markets with stochastic volatility and rough volatility models.
result Super-replication of Markovian claims is of buy-and-hold type in fully incomplete markets.

The study examines a financial model with sticky prices and finds no arbitrage when interest rate is zero.

problem Analyzing financial markets with sticky asset prices and proving no arbitrage conditions.
method Introduced a financial market model with a risky asset following a sticky geometric Brownian motion and a riskless asset with a constant interest rate. Proved no arbitrage conditions and derived pricing equations.
result No arbitrage conditions are met only when the interest rate is zero, and all replicable payoffs are derived under this condition.

New algorithm ensures replicable results in multi-armed bandits with minimal extra regret.

problem Ensuring consistent results in multi-armed bandit studies.
method Incorporates randomness into decision-making to ensure replicability while maintaining minimal extra regret.
result For large time horizons, proposed algorithm suffers only K2/ρ2K^2/ρ^2 times smaller amount of exploration than existing algorithms.

Neural Replicator Dynamics improves deep RL performance in nonstationary environments.

problem Nonstationarity and instability in multiagent reinforcement learning.
method Derive a new algorithm using replicator dynamics to bypass softmax in policy gradient methods.
result Neural Replicator Dynamics (NeuRD) outperforms policy gradient methods in nonstationary environments.