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High-dimensional datasets depict a challenge for learning tasks in data mining and machine learning. Feature selection is an effective technique in dealing with dimensionality reduction. It is often an essential data processing step prior…

Aligning large language models (LLMs) with human preferences is a critical challenge in AI research. While methods like Reinforcement Learning from Human Feedback (RLHF) and Direct Preference Optimization (DPO) are widely used, they often…

计算与语言 · 计算机科学 2026-05-19 Xuan Qi , Rongwu Xu , Zhijing Jin

One important feature of complex systems are problem domains that have many local minima and substructure. Biological systems manage these local minima by switching between different subsystems depending on their environmental or…

神经与进化计算 · 计算机科学 2022-08-25 Ankit Grover , Vaishali Yadav , Bradly Alicea

In this work, we present an extension of the genetic algorithm (GA) which exploits the supervised learning technique called active subspaces (AS) to evolve the individuals on a lower dimensional space. In many cases, GA requires in fact…

数值分析 · 数学 2021-07-13 Nicola Demo , Marco Tezzele , Gianluigi Rozza

Network security has become the biggest concern in the area of cyber security because of the exponential growth in computer networks and applications. Intrusion detection plays an important role in the security of information systems or…

密码学与安全 · 计算机科学 2022-10-07 Zareen Fatima , Arshad Ali

In the weakly supervised temporal video grounding study, previous methods use predetermined single Gaussian proposals which lack the ability to express diverse events described by the sentence query. To enhance the expression ability of a…

计算机视觉与模式识别 · 计算机科学 2024-04-05 Sunoh Kim , Jungchan Cho , Joonsang Yu , YoungJoon Yoo , Jin Young Choi

The recent proliferation of high-dimensional data, such as electronic health records and genetics data, offers new opportunities to find novel predictors of outcomes. Presented with a large set of candidate features, interest often lies in…

统计方法学 · 统计学 2024-09-24 Michael J. Martens , Anjishnu Banerjee , Xinran Qi , Yushu Shi

Global average pooling (GAP) allows to localize discriminative information for recognition [40]. While GAP helps the convolution neural network to attend to the most discriminative features of an object, it may suffer if that information is…

计算机视觉与模式识别 · 计算机科学 2018-11-30 Haoran Wang , Yue Fan , Zexin Wang , Licheng Jiao , Bernt Schiele

Numerous social, medical, engineering and biological challenges can be framed as graph-based learning tasks. Here, we propose a new feature based approach to network classification. We show how dynamics on a network can be useful to reveal…

机器学习 · 统计学 2017-06-01 Leonardo Gutierrez Gomez , Benjamin Chiem , Jean-Charles Delvenne

The performance of GA is measured and analyzed in terms of its performance parameters against variations in its genetic operators and associated parameters. Since last four decades huge numbers of researchers have been working on the…

神经与进化计算 · 计算机科学 2013-10-07 Anagha P. Khedkar , Shaila Subbaraman

Volatility is a key variable in option pricing, trading and hedging strategies. The purpose of this paper is to improve the accuracy of forecasting implied volatility using an extension of genetic programming (GP) by means of dynamic…

综合金融 · 定量金融 2020-07-15 Sana Ben Hamida , Wafa Abdelmalek , Fathi Abid

The Group Activity Selection Problem (GASP) models situations where a group of agents needs to be distributed to a set of activities while taking into account preferences of the agents w.r.t. individual activities and activity sizes. The…

数据结构与算法 · 计算机科学 2018-08-22 Robert Ganian , Sebastian Ordyniak , C. S. Rahul

Lifted probabilistic inference exploits symmetries in a probabilistic model to allow for tractable probabilistic inference with respect to domain sizes of logical variables. We found that the current state-of-the-art algorithm to construct…

人工智能 · 计算机科学 2024-11-21 Malte Luttermann , Ralf Möller , Marcel Gehrke

We recently reported that the simple genetic algorithm (SGA) is capable of performing a remarkable form of sublinear computation which has a straightforward connection with the general problem of interacting attributes in data-mining. In…

神经与进化计算 · 计算机科学 2009-05-18 Keki M. Burjorjee

Using a probabilistic approach, we derive some interesting combinatorial identities involving gamma and beta functions. These results generalize certain well-known combinatorial identities involving binomial coefficients and special…

概率论 · 数学 2026-05-15 Palaniappan Vellaisamy , Puja Pandey

For ambiguous queries, conventional retrieval systems are bound by two conflicting goals. On the one hand, they should diversify and strive to present results for as many query intents as possible. On the other hand, they should provide…

信息检索 · 计算机科学 2015-03-19 Karthik Raman , Thorsten Joachims , Pannaga Shivaswamy

We present a Python package together with a practical guide for the implementation of a lightweight diversity-enhanced genetic algorithm (GA) approach for the exploration of multi-dimensional parameter spaces. Searching a parameter space…

神经与进化计算 · 计算机科学 2024-12-24 Jonas Wessén , Eliel Camargo-Molina

Mutual Information (MI) is often used for feature selection when developing classifier models. Estimating the MI for a subset of features is often intractable. We demonstrate, that under the assumptions of conditional independence, MI…

机器学习 · 计算机科学 2017-06-26 Hemanth Venkateswara , Prasanth Lade , Binbin Lin , Jieping Ye , Sethuraman Panchanathan

In the feature classification domain, the choice of data affects widely the results. For the Hyperspectral image, the bands dont all contain the information; some bands are irrelevant like those affected by various atmospheric effects, see…

计算机视觉与模式识别 · 计算机科学 2012-11-02 Elkebir Sarhrouni , Ahmed Hammouch , Driss Aboutajdine

Differentially Private Stochastic Gradient Descent (DP-SGD) forms a fundamental building block in many applications for learning over sensitive data. Two standard approaches, privacy amplification by subsampling, and privacy amplification…

机器学习 · 计算机科学 2020-07-31 Borja Balle , Peter Kairouz , H. Brendan McMahan , Om Thakkar , Abhradeep Thakurta