Operational Research

Top Research Topics at Operational Research?

Computational intelligence, Mathematical optimization, Operations research, Supply chain and Econometrics are the subjects of interest in Operational Research. Research in Computational intelligence tackled falls within the umbrella of Artificial intelligence. Research on Artificial intelligence addressed in Operational Research frequently intersections with the field of Machine learning.

The studies on Mathematical optimization discussed can also contribute to research in the domains of Job shop scheduling and Benchmark (computing). Operations research research discussed connects with the study of Production (economics). Research on Supply chain presented in it focuses, in particular, on Supply chain network and Supply chain management.

• Computational intelligence (46.16%)
• Mathematical optimization (29.14%)
• Operations research (18.35%)

What are the most cited papers published in the journal?

• An algorithm for Ranking All the Assignments in Order of Increasing Cost (383 citations)
• Facets and strong valid inequalities for integer programs (101 citations)
• A survey of data mining techniques applied to agriculture (83 citations)

Research areas of the most cited articles at Operational Research:

The journal publications cover a variety of subjects, including Computational intelligence, Mathematical optimization, Operations research, Supply chain and Microeconomics. The journal articles tackle topics on Computational intelligence, which can potentially contribute to the wider field of Artificial intelligence. The journal articles focus on Mathematical optimization but the discussions also offer insight into other areas such as Vehicle routing problem and Nonlinear system.

What topics the last edition of the journal is best known for?

• World War II
• Statistics
• Artificial intelligence

The previous edition focused in particular on these issues:

The journal tackles a plethora of topics, such as Computational intelligence, Mathematical optimization, Operations research, Supply chain and Production (economics). Attendees of it participated in discussions that delve into both Computational intelligence and Basis (linear algebra). Operational Research holds forums on Mathematical optimization that merges themes from other disciplines such as Nonlinear programming and Benchmark (computing).

Operations research research in it involves the investigation of Process (engineering) studies, all of which are linked to disciplines such as Context (language use). The tackled Supply chain research is interrelated with Product (business) which concerns subjects like Profit (economics). Topics in Data envelopment analysis were tackled in line with various other fields like Ranking and Inefficiency.

The most cited articles from the last journal are:

• A decision support system for techno-economic evaluation of indoor lighting systems with LED luminaires (17 citations)
• A mathematical model for designing an integrated pharmaceutical supply chain with maximum expected coverage under uncertainty (13 citations)
• Supplier selection and order allocation using two-stage hybrid supply chain model and game-based order price (13 citations)

Papers citation over time

A key indicator for each journal is its effectiveness in reaching other researchers with the papers published at that venue.

The chart below presents the interquartile range (first quartile 25%, median 50% and third quartile 75%) of the number of citations of articles over time.

Top authors and change over time

The top authors publishing in Operational Research (based on the number of publications) are:

• Constantin Zopounidis (21 papers) published 1 paper at the last edition, 1 less than at the previous edition,
• Nikolaos F. Matsatsinis (12 papers) absent at the last edition,
• Bibhas C. Giri (12 papers) published 2 papers at the last edition, 2 less than at the previous edition,
• Evangelos Grigoroudis (10 papers) published 1 paper at the last edition the same number as at the previous edition,
• Michael Doumpos (10 papers) absent at the last edition.

The overall trend for top authors publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top authors.

Top affiliations and change over time

Only papers with recognized affiliations are considered

The top affiliations publishing in Operational Research (based on the number of publications) are:

• Technical University of Crete (58 papers) published 3 papers at the last edition, 1 less than at the previous edition,
• National Technical University of Athens (41 papers) published 5 papers at the last edition, 1 less than at the previous edition,
• Aristotle University of Thessaloniki (31 papers) published 1 paper at the last edition, 1 less than at the previous edition,
• Democritus University of Thrace (24 papers) published 1 paper at the last edition, 1 less than at the previous edition,
• University of Piraeus (24 papers) published 1 paper at the last edition the same number as at the previous edition.

The overall trend for top affiliations publishing in this journal is outlined below. The chart shows the number of publications at each edition of the journal for top affiliations.

Publication chance based on affiliation

The publication chance index shows the ratio of articles published by the best research institutions in the journal edition to all articles published within that journal. The best research institutions were selected based on the largest number of articles published during all editions of the journal.

The chart below presents the percentage ratio of articles from top institutions (based on their ranking of total papers).Top affiliations were grouped by their rank into the following tiers: top 1-10, top 11-20, top 21-50, and top 51+. Only articles with a recognized affiliation are considered.

During the most recent 2021 edition, 5.67% of publications had an unrecognized affiliation. Out of the publications with recognized affiliations, 20.30% were posted by at least one author from the top 10 institutions publishing in the journal. Another 17.29% included authors affiliated with research institutions from the top 11-20 affiliations. Institutions from the 21-50 range included 14.29% of all publications and 48.12% were from other institutions.

Returning Authors Index

A very common phenomenon observed among researchers publishing scientific articles is the intentional selection of journals they have already attended in the past. In particular, it is worth analyzing the case when the authors participate in the same journal from year to year.

The Returning Authors Index presented below illustrates the ratio of authors who participated in both a given as well as the previous edition of the journal in relation to all participants in a given year.

Returning Institution Index

The graph below shows the Returning Institution Index, illustrating the ratio of institutions that participated in both a given and the previous edition of the conference in relation to all affiliations present in a given year.

The experience to innovation index

Our experience to innovation index was created to show a cross-section of the experience level of authors publishing in a journal. The index includes the authors publishing at the last edition of a journal, grouped by total number of publications throughout their academic career (P) and the total number of citations of these publications ever received (C).

The group intervals were selected empirically to best show the diversity of the authors' experiences, their labels were selected as a convenience, not as judgment. The authors were divided into the following groups:

• Novice - P < 5 or C < 25 (the number of publications less than 5 or the number of citations less than 25),
• Competent - P < 10 or C < 100 (the number of publications less than 10 or the number of citations less than 100),
• Experienced - P < 25 or C < 625 (the number of publications less than 25 or the number of citations less than 625),
• Master - P < 50 or C < 2500 (the number of publications less than 50 or the number of citations less than 2500),
• Star - P ≥ 50 and C ≥ 2500 (both the number of publications greater than 50 and the number of citations greater than 2500).

The chart below illustrates experience levels of first authors in cases of publications with multiple authors.