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- research-articleOctober 2024
Hierarchical Structure Construction on Hypergraphs
CIKM '24: Proceedings of the 33rd ACM International Conference on Information and Knowledge ManagementPages 1597–1606https://doi.org/10.1145/3627673.3679765Exploring the hierarchical structure of graphs presents notable advantages for graph analysis, revealing insights ranging from individual vertex behavior to community distribution and overall graph stability. This paper studies hierarchical structures ...
- research-articleFebruary 2024
Hierarchy Conflict: Causes, Expressions, and Consequences
Organization Science (INFORMS-ORGS), Volume 35, Issue 4Pages 1535–1551https://doi.org/10.1287/orsc.2023.17976Hierarchy conflict, a dispute among members over the rank order of influence in the team, often impairs team processes and outcomes. The current literature often operates from the assumption that self-interest must be high when team members engage in ...
- research-articleNovember 2023
The Company She Seeks: How the Prismatic Effects of Ties to High-Status Network Contacts Can Reduce Status for Women in Groups
Organization Science (INFORMS-ORGS), Volume 35, Issue 3Pages 853–887https://doi.org/10.1287/orsc.2020.14640Women experience chronically inferior returns in organizations. One common recommendation is to form instrumental network ties with high-status others in groups. We integrate research on social status, social perceptions, and gender issues in social ...
- ArticleJanuary 2024
- ArticleAugust 2023
Hierarchical Management of Extreme-Scale Task-Based Applications
AbstractThe scale and heterogeneity of exascale systems increment the complexity of programming applications exploiting them. Task-based approaches with support for nested tasks are a good-fitting model for them because of the flexibility lying in the ...
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- posterJuly 2023
Hierarchical Frames-of-References in Learning Classifier Systems
GECCO '23 Companion: Proceedings of the Companion Conference on Genetic and Evolutionary ComputationPages 335–338https://doi.org/10.1145/3583133.3590588Perceptual aliasing is one of the most important problems in Robot-navigation as a robot cannot distinguish its state via its immediate observations leading to poor decision-making. Frames-of-References-based XCS learns policies comprising of ...
- research-articleJune 2023
Hierarchical Over-the-Air Federated Learning with Differential Privacy
WiseML'23: Proceedings of the 2023 ACM Workshop on Wireless Security and Machine LearningPages 51–56https://doi.org/10.1145/3586209.3591400Federated learning (FL) is a burgeoning field that examines the cooperative interaction of machine learning (ML) models with users, enabling the training of a global model while each user retains its data locally. With differential privacy (DP), FL also ...
- research-articleMay 2023
Hierarchical and Hybrid Organizational Structures in Open-source Software Projects: A Longitudinal Study
ACM Transactions on Software Engineering and Methodology (TOSEM), Volume 32, Issue 4Article No.: 86, Pages 1–29https://doi.org/10.1145/3569949Despite the absence of a formal process and a central command-and-control structure, developer organization in open-source software (OSS) projects are far from being a purely random process. Prior work indicates that, over time, highly successful OSS ...
- research-articleMay 2023
Hierarchy‐assisted gene expression regulatory network analysis
Statistical Analysis and Data Mining (STADM), Volume 16, Issue 3Pages 272–294https://doi.org/10.1002/sam.11609AbstractGene expressions have been extensively studied in biomedical research. With gene expression, network analysis, which takes a system perspective and examines the interconnections among genes, has been established as highly important and meaningful. ...
- research-articleMay 2023
Rising Above vs. Falling Below: When and Why Status Change Affects Interpersonal Helping in Workgroups
Organization Science (INFORMS-ORGS), Volume 34, Issue 3Pages 1157–1183https://doi.org/10.1287/orsc.2022.1613The current research sheds new light on how and why status hierarchies impact interpersonal helping by examining people’s reactions to recently experienced status change. Specifically, we incorporate findings from research on the self-serving ...
- research-articleJanuary 2023
Learning in Temporary Teams: The Varying Effects of Partner Exposure by Team Member Role
Organization Science (INFORMS-ORGS), Volume 34, Issue 1Pages 433–455https://doi.org/10.1287/orsc.2022.1585In many workplaces, temporary teams convene to coordinate complex work, despite team members having not worked together before. Most related research has found consistent performance benefits when members of temporary teams work together multiple times (...
- research-articleNovember 2022
Victorious and Hierarchical: Past Performance as a Determinant of Team Hierarchical Differentiation
Organization Science (INFORMS-ORGS), Volume 33, Issue 6Pages 2346–2363https://doi.org/10.1287/orsc.2021.1528Hierarchies emerge as collectives attempt to organize themselves toward successful performance. Consequently, research has focused on how team hierarchies affect performance. We extend existing models of the hierarchy-performance relationship by adopting ...
- research-articleOctober 2022
Structure-Enhanced Pop Music Generation via Harmony-Aware Learning
MM '22: Proceedings of the 30th ACM International Conference on MultimediaPages 1204–1213https://doi.org/10.1145/3503161.3548084Pop music generation has always been an attractive topic for both musicians and scientists for a long time. However, automatically composing pop music with a satisfactory structure is still a challenging issue. In this paper, we propose to leverage ...
- research-articleSeptember 2022
Information Systems Reliability in Traditional Entropy and Novel Hierarchy
Cybernetics and Information Technologies (CYBAIT), Volume 22, Issue 3Pages 3–17https://doi.org/10.2478/cait-2022-0024AbstractThe continuous progress of computing technologies increases the need for improved methods and tools for assessing the performance of information systems in terms of reliability, conformance, and quality of service. This paper presents an extension ...
- research-articleMarch 2022
Using Stretch Goals for Idea Generation Among Employees: One Size Does Not Fit All!
Organization Science (INFORMS-ORGS), Volume 33, Issue 2Pages 671–687https://doi.org/10.1287/orsc.2021.1462This study explores heterogeneity in the efficacy of stretch goals for engaging employees in innovation, as stretch goals may both boost norm-breaking creativity and hamper fruitful ideation by overwhelming employees. Through a multilevel perspective, we ...
- research-articleMarch 2022
What Questions Are You Inclined to Answer? Effects of Hierarchy in Corporate Q&A Communities
Information Systems Research (INFORMS-ISR), Volume 33, Issue 1Pages 244–264https://doi.org/10.1287/isre.2021.1052Are employees willing to voluntarily share knowledge with their higher-ups? The existing studies show that the answer is no—employees are less likely to share knowledge with their higher-ups in the offline setting, corporate wikis, and online discussion ...
An increasing number of companies have started to implement corporate knowledge-sharing communities. Consistent with the observation in the offline setting, employees are less likely to share knowledge with individuals who have higher job ranks (i.e., ...
- abstractJune 2021
Data Summarization with Hierarchical Taxonomy
SIGMOD '21: Proceedings of the 2021 International Conference on Management of DataPages 2914–2916https://doi.org/10.1145/3448016.3450578Data summarization has wide applications in real world, e.g. attributes filter, image set labeling and personalized recommendation. In this work, we study a new problem HSD to summarize a dataset using k concepts in a hierarchical taxonomy. Different ...
- research-articleJune 2021
Enquire One’s Parent and Child Before Decision: Fully Exploit Hierarchical Structure for Self-Supervised Taxonomy Expansion
WWW '21: Proceedings of the Web Conference 2021Pages 3291–3304https://doi.org/10.1145/3442381.3449948Taxonomy is a hierarchically structured knowledge graph that plays a crucial role in machine intelligence. The taxonomy expansion task aims to find a position for a new term in an existing taxonomy to capture the emerging knowledge in the world and keep ...
- short-paperMarch 2021
Designing a Greek Electronic Dictionary based on Ontology
PCI '20: Proceedings of the 24th Pan-Hellenic Conference on InformaticsPages 223–225https://doi.org/10.1145/3437120.3437311In this paper we examine the design of a conceptual dictionary of the modern Greek language with intelligent features, which will offer possibilities of semantic integration and interoperability in an automatic and secure way, connecting heterogeneous ...
- research-articleOctober 2020
Top-k Graph Summarization on Hierarchical DAGs
CIKM '20: Proceedings of the 29th ACM International Conference on Information & Knowledge ManagementPages 1903–1912https://doi.org/10.1145/3340531.3411899Directed acyclic graph (DAG) is an essentially important model to represent terminologies and their hierarchical relationships, such as Disease Ontology. Due to massive terminologies and complex structures in a large DAG, it is challenging to summarize ...