OOIR: Observatory of International Research

Papers

(The H4-Index of Annals of Operations Research is 48. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2021-04-01 to 2025-04-01.)

Article	Citations
Matchings under distance constraints I.	157
A spatial utility model for ranking maps	155
Scheduling problems on parallel machines with machine-dependent generalized due-dates	154
Joint balancing and sequencing optimization for type-II robotic mixed-model assembly line considering energy consumption	136
Do stock markets care about ESG and sentiments? Impact of ESG and investors' sentiment on share price prediction using machine learning	135
Inexact proximal point method with a Bregman regularization for quasiconvex multiobjective optimization problems via limiting subdifferentials	131
Assessing the potential of digital technology: an integrated measurement of economic, environmental, and social performance	122
Early warning system to predict energy prices: the role of artificial intelligence and machine learning	122
The role of cryptocurrencies in predicting oil prices pre and during COVID-19 pandemic using machine learning	121
Testing the moderating role of trade openness on the environmental Kuznets curve hypothesis: a novel approach	121
Uncertainty and fluctuation in crude oil price: evidence from machine learning models	119
The role of news-based sentiment in forecasting crude oil price during the Covid-19 pandemic	118
Do commodity assets hedge uncertainties? What we learn from the recent turbulence period?	108
Solar events and the US energy sector: a novel sectoral spillover GVAR approach introducing indirect GIRFs (IGIRF)	101
RETRACTED ARTICLE: A new truck-drone routing problem for parcel delivery by considering energy consumption and altitude	100
Revisiting Islamic banking efficiency using multivariate adaptive regression splines	99
Incomplete pairwise comparison matrices based on graphs with average degree approximately 3	97
An integrated fuzzy MCDM approach for manufacturing process improvement in MSMEs	92
Game model of transnational green supply chain management considering government subsidies	87
Evaluating sustainability initiatives in warehouse for measuring sustainability performance: an emerging economy perspective	85
Customer emotion detection and analytics in hotel and tourism services using multi-label classificational models based on ensemble learning	82
Assessing the impact of EU policies on recycling supply chain: a system dynamics perspective on advancing packaging recycling capacity	81
Detecting fake news and disinformation using artificial intelligence and machine learning to avoid supply chain disruptions	78
The origins and development of statistical approaches in non-parametric frontier models: a survey of the first two decades of scholarly literature (1998–2020)	77
RETRACTED ARTICLE: Research on financial control of enterprise group based on artificial intelligence and big data	70

RETRACTED ARTICLE: Research on the investment efficiency based on grey correlation-DEA model	69
A note on valid inequalities for a service center location problem with a type of decision-dependent customer demand	68
Preface: Data mining and decision analytics	67
Preface: Contributions of OR to solve agricultural problems	67
Implied value-at-risk and model-free simulation	65
Green channel coordination under asymmetric information	63
Exiting the COVID-19 pandemic: after-shock risks and avoidance of disruption tails in supply chains	61
An intelligent payment card fraud detection system	61
A metaheuristic-based comparative structure for solving discrete space mechanical engineering problem	57
Smart supply chain management in Industry 4.0: the review, research agenda and strategies in North America	57
Policy analysis for emission-reduction with green technology investment in manufacturing	55
Multi-criteria classification, sorting, and clustering: a bibliometric review and research agenda	55
Improving empirical models and forecasts with saturation-based machine learning	54
Enhancing unmanned aerial vehicles logistics for dynamic delivery: a hybrid non-dominated sorting genetic algorithm II with Bayesian belief networks	54
Expected return, realized return and asset pricing tests	53
The Ashley and Patterson (1986) test for serial independence in daily stock returns, revisited	52
Portfolio insurance, portfolio theory, market simulation, and risks of portfolio leverage	52
Earnings forecasting and mean–variance efficient portfolios in the United States	50
Seasonal affective disorder and currency markets	50
Dynamic asset allocation with asset-specific regime forecasts	50
Alternatives to classical option pricing	49
Model-based vs. agnostic methods for the prediction of time-varying covariance matrices	49
A probabilistic approach to the stochastic fluid cash management balance problem	48
Sensitivity-based weighting method for composite indicators	48
Another puzzle: the growth in actively managed mutual funds	48