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Pavlos Delias

dblp:86/5982 · DBLP profile ↗
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7ranked-venue papers
4as first author
1since 2021 · last 2021
0000-0002-3722-2307ORCID · verified

Domains — the database's venue-derived domains; a paper can count in several

Artificial intelligence and machine learning · 4 · 2 first-authorDatabases, data management, data science and information retrieval · 3 · 3 first-author · 1 since 2021Human-computer interaction and ubiquitous computing · 1Applied, interdisciplinary, general and emerging computing · 1

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer architecture, parallel and distributed computing, and storage systems
1 paper
Distributed systems · 33% Cloud and datacenter computing · 33% Parallel and multicore computing · 33%
Theoretical computer science
1 paper
Mathematical optimization · 100%

Topics — the 4 heaviest of 4, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Cloud and datacenter computing › resource management
resource allocation and scheduling
0.112011
Optimizing Resource Conflicts in Workflow Management Systems · IEEE Trans. Knowl. Data Eng. 2011
Parallel and multicore computing
task scheduling
0.112011
Optimizing Resource Conflicts in Workflow Management Systems · IEEE Trans. Knowl. Data Eng. 2011
Distributed systems
workflow management
0.112011
Optimizing Resource Conflicts in Workflow Management Systems · IEEE Trans. Knowl. Data Eng. 2011
Mathematical optimization › numerical analysis › eigenvalue problem
generalized eigenvalue problem
0.012011
Optimizing Resource Conflicts in Workflow Management Systems · IEEE Trans. Knowl. Data Eng. 2011

Methods — techniques the papers use, named apart from their topics

generalized eigenvalue analysis · 0.2agent-based architecture · 0.2
YearPublicationVenuePosition
2021 Prototyping a business process improvement plan. An evidence-based approach
Pavlos Delias, Gia-Thi Nguyen
Inf. Syst.1
2019 Applying the Method of Reflections through an Event Log for Evidence-based Process Innovation
abstract
Flexibility and adaptability have been praised and empirically validated as critical for an organization's performance. They are associated with the number of different behaviors that the organization exhibits, as well as with their level of sophistication, which in turn implies the number and the quality of the available knowledge and capabilities in place. In this work, we propose the creation of a bipartite network, involving organizations and behaviors, through an event log, to capture the prospects of both organizations and behaviors for process innovation. By using the Method of Reflections, we claim that the structure of that network can expose a set of sophistication metrics, that eventually suggest i) the potential of behaviors for better organizational performance; ii) the most reachable innovation paths; iii) an "order of significance" over the behaviors considering their improvement contribution power. We show the practical potential of our approach through a Proof of Concept based on a real dataset.
Pavlos Delias, Mehdi Acheli, Daniela Grigori
ICPM1
2017 Mining Skier Transportation Patterns From Ski Resort Lift Usage Data
abstract
Descriptive data analysis is used for mining spatial and temporal patterns from ski lift entrance data. The data, collected through radio-frequency identification scanners, cover one skiing season with approximately 1.2 million recorded ski lift transportations. Cluster analysis was performed on ten subsamples, and the obtained clusters were cross-validated. Several types of skier behavior were found. Temporal clustering revealed that skier patterns differ according to time of maximal performance and length of stay in the ski lift transportation system. Spatial clustering revealed that it is reasonable to have as many clusters as ski lifts in a ski resort, since skiers tend to choose a dominant ski lift during a skier-day. The detected patterns reveal valuable information that can be used for potential improvement of products and services offered by ski resorts.
Boris Delibasic, Petar Markovic, Pavlos Delias, Zoran Obradovic
IEEE Trans. Hum. Mach. Syst.3
2015 Optimizing differentiation and commonality levels among models in car line-ups: An empirical application of a nature-inspired heuristic mechanism
Charalampos Saridakis, Stelios Tsafarakis, Pavlos Delias, George Baltas, Nikolaos F. Matsatsinis
Expert Syst. Appl.3
2015 Supporting healthcare management decisions via robust clustering of event logs
Pavlos Delias, Michael Doumpos, Evangelos Grigoroudis, Panagiotis Manolitzas, Nikolaos F. Matsatsinis
Knowl. Based Syst.1
2011 Optimizing Resource Conflicts in Workflow Management Systems
abstract
Resource allocation and scheduling are fundamental issues in a Workflow Management System (WfMS). Effective resource management in WfMS should examine resource allocation together with task scheduling since these problems impose mutual constraints. Optimization of the one factor is subject to the other constraints and vice versa. Thus, an ideal algorithm should take into account not only performance metrics of the infrastructure, such as the number of resources and their utilization, but also quality criteria such as the percentage of tasks undergone violation in their temporal restrictions. In this paper, we propose an innovative algorithm which jointly optimizes the two aforementioned contradictory criteria. The algorithm, called Resource Conflicts Joint Optimization (Re.Co.Jo.Op.), minimizes resource conflicts subject to temporal constraints and simultaneously optimizes throughput or utilization subject to resources constraints. To achieve the optimization, the two factors are formulated in a matrix form and the optimal solution is found by applying concepts of the generalized eigenvalue analysis. A rough outline of an agent-based architecture is proposed to achieve runtime integration of our algorithm into a functional WfMS, while experimental results under different load environments and tasks assumption reveal the superiority of the proposed strategy than the other conventional approaches.
Pavlos Delias, Anastasios Doulamis, Nikolaos D. Doulamis, Nikolaos F. Matsatsinis
IEEE Trans. Knowl. Data Eng.1
2010 Optimal product line design workflows using a service oriented architecture
abstract
The optimal product line design problem consists of predicting the acceptance of new products in the market, prior of the actual production phase. It requires a unique blend of techniques and resources as it deals with multiple parameters and hard optimization problems. This paper proposes a service oriented architecture which outlines the basic features that a marketing decision support system should provide in order to address this problem. Each feature corresponds to a distinct service while the overall functionality is achieved though service orchestration. The proposed breakdown of the problem into distinct services fits intrinsically the way that marketing managers anticipate the optimal product line process, while it allows them the opportunity to get a solution without getting obstructed of the various, complex optimization parameters and needing to coordinate the whole process.
Stelios Tsafarakis, Pavlos Delias, Nikolaos F. Matsatsinis
ISDA2