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Affinity propagation clustering (AP) has two limitations: it is hard to know what value of parameter 'preference' can yield an optimal clustering solution, and oscillations cannot be eliminated automatically if occur. The adaptive AP method…

人工智能 · 计算机科学 2008-05-09 Kaijun Wang , Junying Zhang , Dan Li , Xinna Zhang , Tao Guo

Anomaly detection is the task of identifying examples that do not behave as expected. Because anomalies are rare and unexpected events, collecting real anomalous examples is often challenging in several applications. In addition, learning…

机器学习 · 计算机科学 2024-05-24 Lorenzo Perini , Maja Rudolph , Sabrina Schmedding , Chen Qiu

We propose a metric for the space of multiple sequence alignments that can be used to compare two alignments to each other. In the case where one of the alignments is a reference alignment, the resulting accuracy measure improves upon…

定量方法 · 定量生物学 2011-11-09 Ariel S. Schwartz , Eugene W. Myers , Lior Pachter

Causal graphs are commonly used to understand and model complex systems. Researchers often construct these graphs from different perspectives, leading to significant variations for the same problem. Comparing causal graphs is, therefore,…

机器学习 · 计算机科学 2025-03-17 Ning-Yuan Georgia Liu , Flower Yang , Mohammad S. Jalali

Scaling up model sizes can lead to fundamentally new capabilities in many machine learning (ML) tasks. However, training big models requires strong distributed system expertise to carefully design model-parallel execution strategies that…

机器学习 · 计算机科学 2022-10-17 Dacheng Li , Hongyi Wang , Eric Xing , Hao Zhang

Approximate spectral clustering (ASC) was developed to overcome heavy computational demands of spectral clustering (SC). It maintains SC ability in predicting non-convex clusters. Since it involves a preprocessing step, ASC defines new…

机器学习 · 计算机科学 2023-02-23 Mashaan Alshammari , Masahiro Takatsuka

We continue the investigation of problems concerning correlation clustering or clustering with qualitative information, which is a clustering formulation that has been studied recently. The basic setup here is that we are given as input a…

数据结构与算法 · 计算机科学 2007-05-23 Ioannis Giotis , Venkatesan Guruswami

In distributed applications, Brewer's CAP theorem tells us that when networks become partitioned (P), one must give up either consistency (C) or availability (A). Consistency is agreement on the values of shared variables; availability is…

分布式、并行与集群计算 · 计算机科学 2023-01-24 Edward A. Lee , Ravi Akella , Soroush Bateni , Shaokai Lin , Marten Lohstroh , Christian Menard

This paper explores the problem of clustering ensemble, which aims to combine multiple base clusterings to produce better performance than that of the individual one. The existing clustering ensemble methods generally construct a…

机器学习 · 计算机科学 2020-12-17 Yuheng Jia , Hui Liu , Junhui Hou , Qingfu Zhang

The increasing adoption of heterogeneous platforms that combine CPUs with accelerators such as GPUs in high-performance computing (HPC) introduces new challenges for performance analysis and optimization. Traditional efficiency metrics,…

分布式、并行与集群计算 · 计算机科学 2026-03-30 Ghazal Rahimi , Victor Lopez , Marc Clascà , Joan Vinyals Ylla Català , Jesus Labarta , Marta Garcia-Gasulla

Today, data analysts largely rely on intuition to determine whether missing or withheld rows of a dataset significantly affect their analyses. We propose a framework that can produce automatic contingency analysis, i.e., the range of values…

数据库 · 计算机科学 2020-04-09 Xi Liang , Zechao Shang , Aaron J. Elmore , Sanjay Krishnan , Michael J. Franklin

Meta-learners and ensembles aim to combine a set of relevant yet diverse base models to improve predictive performance. However, determining an appropriate set of base models is challenging, especially in online environments where the…

机器学习 · 计算机科学 2021-11-30 Helen McKay , Nathan Griffiths , Phillip Taylor

This paper establishes a rigorous measurement science for AI agent reliability, providing a foundational framework for quantifying consistency under semantically preserving perturbations. By leveraging $U$-statistics for output-level…

人工智能 · 计算机科学 2026-05-12 Harsh Raj , Niranjan Orkat , Suvrorup Mukherjee , Aritra Guha , Cheryl Flynn , Subhabrata Majumdar

This paper introduces the Quest Graph, a formal framework for analyzing the capabilities of agentic systems with finite context. We define abstractions that model common reasoning techniques and establish their computational power: the base…

计算复杂性 · 计算机科学 2026-02-17 Chatavut Viriyasuthee

We introduce the aggregated clustering problem, where one is given $T$ instances of a center-based clustering task over the same $n$ points, but under different metrics. The goal is to open $k$ centers to minimize an aggregate of the…

数据结构与算法 · 计算机科学 2025-10-10 Deeparnab Chakrabarty , Jonathan Conroy , Ankita Sarkar

A new clustering accuracy measure is proposed to determine the unknown number of clusters and to assess the quality of clustering of a data set given in any dimensional space. Our validity index applies the classical nonparametric…

统计方法学 · 统计学 2022-02-15 Soumita Modak

There are several metrics (Modularity, Mutual Information, Conductance, etc.) to evaluate the strength of graph clustering in large graphs. These metrics have great significance to measure the effectiveness and they are often used to find…

社会与信息网络 · 计算机科学 2016-10-12 Md. Khaledur Rahman

Conformal Prediction (CP) is a popular method for uncertainty quantification with machine learning models. While conformal prediction provides probabilistic guarantees regarding the coverage of the true label, these guarantees are agnostic…

The performance of most the clustering methods hinges on the used pairwise affinity, which is usually denoted by a similarity matrix. However, the pairwise similarity is notoriously known for its vulnerability of noise contamination or the…

机器学习 · 计算机科学 2020-06-29 Hong Peng , Yu Hu , Jiazhou Chen , Haiyan Wang , Yang Li , Hongmin Cai

Attributed Graph Clustering (AGC) is a fundamental unsupervised task that integrates structural topology and node attributes to uncover latent patterns in graph-structured data. Despite its significance in industrial applications such as…

机器学习 · 计算机科学 2026-02-10 Yunhui Liu , Pengyu Qiu , Yu Xing , Yongchao Liu , Peng Du , Chuntao Hong , Jiajun Zheng , Tao Zheng , Tieke He