What are the most common topics in recent operations research?

In the last 30 days, the most frequent OpenAlex keywords in papers from the tracked operations research journals were “mixed-integer linear programming” (12), “demand uncertainty” (8), “supply chain coordination” (8), “supply chain resilience” (8) and “carbon emission reduction” (7).

Which universities and institutions publish the most operations research?

In the last 30 days, the institutions with the most papers in the tracked operations research journals were Beihang University (9), Southwest Jiaotong University (8), Hong Kong Polytechnic University (7), Beijing Jiaotong University (6) and Dalian University of Technology (6).

Which countries publish the most operations research?

Counting papers with at least one author at an institution in the country, the leaders over the last 30 days were China (112), United States (29), United Kingdom (15), France (13) and Hong Kong (12).

Which equations and models do recent operations research papers use most?

Counting papers that mention them by name in the title, abstract, keywords or full text, the most frequent in the tracked operations research journals over the last 30 days were Linear and integer programming (29), Logistic regression (logit) (8), Data envelopment analysis (DEA) (4), Gradient descent (4) and Proximal policy optimization (PPO) (4).

What data do recent operations research papers use?

Counting papers that mention a dataset by name, the kinds of data used most over the last 30 days were Stock market indices (5), Macroeconomic and development indicators (2), China household and social surveys (1), Corporate filings and text (1) and ESG and sustainability ratings (1); the most-mentioned datasets were S&P 500 (4), Eurostat (2), China Health and Nutrition Survey (CHNS) (1), CRSP (1) and Earnings call transcripts (1).

How current is this data?

It is rebuilt from OpenAlex 4 times a day (00:00, 06:00, 12:00, 18:00, UTC+09:00); the last update was 2026-10-26 11:39 UTC+09:00. OpenAlex usually indexes new papers within a few days of publication.

Operations Research rankings

Papers in the 11 tracked operations research journals, window 2026-09-27 – 2026-10-26 (30 days). Keywords, institutions, web domains and countries are ranked by paper count. Also as Markdown.

240Papers (30 days)

13Papers (last 7 days)

11Journals

363Institutions

51Countries

355Web domains

Key findings

In the last 30 days (2026-09-27 to 2026-10-26), 240 papers were published in the 11 tracked operations research journals (as indexed by OpenAlex).
The most frequent keywords were “mixed-integer linear programming” (12), “demand uncertainty” (8) and “supply chain coordination” (8).
The institutions with the most papers were Beihang University (9), Southwest Jiaotong University (8) and Hong Kong Polytechnic University (7).
China was involved in 47% of the papers (112), followed by United States (29) and United Kingdom (15).
Among institution web domains, .edu.cn appeared on 47% of the papers.
The most-mentioned equations and models were Linear and integer programming (29), Logistic regression (logit) (8) and Data envelopment analysis (DEA) (4).
The most-mentioned kinds of data were Stock market indices (5), Macroeconomic and development indicators (2) and China household and social surveys (1); the most-mentioned datasets were S&P 500 (4), Eurostat (2) and China Health and Nutrition Survey (CHNS) (1).

Papers per day

2026-09-272026-10-26

Show the numbers

Papers per publication date
Date	Papers
2026-09-27	3
2026-09-28	7
2026-09-29	14
2026-09-30	12
2026-10-01	104
2026-10-02	3
2026-10-03	7
2026-10-04	0
2026-10-05	8
2026-10-06	3
2026-10-07	4
2026-10-08	8
2026-10-09	4
2026-10-10	3
2026-10-11	1
2026-10-12	1
2026-10-13	3
2026-10-14	3
2026-10-15	6
2026-10-16	22
2026-10-17	6
2026-10-18	2
2026-10-19	3
2026-10-20	9
2026-10-21	1
2026-10-22	1
2026-10-23	2
2026-10-24	0
2026-10-25	0
2026-10-26	0

Growing over the year Trends →

Papers in Jul 2026–Sep 2026 beyond what the keyword's share in Oct 2025–Jun 2026 predicts
Keyword	Papers Jul 2026–Sep 2026	vs. earlier share
price competition	11	+9
drone delivery	15	+9
supply chain coordination	19	+8
local search	15	+8
distributionally robust optimization	22	+7

Top research keywords

Top 20 · 2026-09-27 – 2026-10-26 (30 days)
#	Keyword	Papers	Last 7 days
1	mixed-integer linear programming	12	1
2	demand uncertainty	8	0
2	supply chain coordination	8	0
2	supply chain resilience	8	0
5	carbon emission reduction	7	0
5	last-mile delivery	7	0
5	two-stage stochastic programming	7	0
8	distributionally robust optimization	6	0
8	facility location	6	0
10	mixed-integer nonlinear programming	5	0
10	multi-objective optimization	5	0
10	portfolio optimization	5	2
10	robust optimization	5	0
14	Benders decomposition	4	0
14	adaptive large neighborhood search	4	0
14	game theory	4	0
14	inventory management	4	0
14	non-convex optimization	4	1
14	price competition	4	0
14	proximal policy optimization	4	0

Top universities and research institutions

Top 20 · 2026-09-27 – 2026-10-26 (30 days)
#	Institution	Papers	Last 7 days
1	Beihang University	9	0
2	Southwest Jiaotong University	8	1
3	Hong Kong Polytechnic University	7	0
4	Beijing Jiaotong University	6	0
4	Dalian University of Technology	6	0
4	Xi'an Jiaotong University	6	0
7	University of Science and Technology of China	5	0
7	Tianjin University	5	0
9	Tongji University	4	0
9	Dongbei University of Finance and Economics	4	0
9	Hefei University of Technology	4	0
9	Northwestern Polytechnical University	4	0
9	Fuzhou University	4	0
14	Qingdao University	3	0
14	NEOMA Business School	3	0
14	Centre National de la Recherche Scientifique	3	0
14	University of Shanghai for Science and Technology	3	1
14	Nanyang Technological University	3	0
14	Shanghai Jiao Tong University	3	0
14	Wayne State University	3	1

Top institution web domains

Top 20 · 2026-09-27 – 2026-10-26 (30 days)
#	Web domain	Papers	Last 7 days
1	buaa.edu.cn	9	0
2	swjtu.edu.cn	8	1
3	polyu.edu.hk	7	0
4	dlut.edu.cn	6	0
4	njtu.edu.cn	6	0
4	xjtu.edu.cn	6	0
7	tju.edu.cn	5	0
7	ustc.edu.cn	5	0
9	dufe.edu.cn	4	0
9	fzu.edu.cn	4	0
9	hfut.edu.cn	4	0
9	nwpu.edu.cn	4	0
9	tongji.edu.cn	4	0
14	cnrs.fr	3	0
14	cup.edu.cn	3	0
14	kuleuven.be	3	0
14	mit.edu	3	0
14	neoma-bs.com	3	0
14	ntu.edu.sg	3	0
14	qdu.edu.cn	3	0

Top countries

Top 20 · 2026-09-27 – 2026-10-26 (30 days)
#	Country	Papers	Last 7 days
1	China (CN)	112	5
2	United States (US)	29	2
3	United Kingdom (GB)	15	1
4	France (FR)	13	1
5	Hong Kong (HK)	12	0
6	Australia (AU)	11	1
6	Turkey (TR)	11	1
8	Italy (IT)	10	2
9	Canada (CA)	9	0
10	India (IN)	8	0
11	Germany (DE)	7	0
12	Greece (GR)	6	0
13	Belgium (BE)	5	0
13	South Korea (KR)	5	0
13	Singapore (SG)	5	0
13	Vietnam (VN)	5	0
17	Iran (IR)	4	1
17	Norway (NO)	4	0
19	Chile (CL)	3	0
19	Spain (ES)	3	0

Research fields

Top 13 · 2026-09-27 – 2026-10-26 (30 days)
#	Field	Papers	Last 7 days
1	Business, Management and Accounting	71	2
2	Engineering	67	2
3	Computer Science	33	5
4	Decision Sciences	29	3
5	Economics, Econometrics and Finance	11	1
6	Social Sciences	10	0
7	Mathematics	5	0
8	Psychology	3	0
9	Health Professions	2	0
9	Medicine	2	0
9	Physics and Astronomy	2	0
12	Agricultural and Biological Sciences	1	0
12	Energy	1	0

Papers per journal

Top 11 · 2026-09-27 – 2026-10-26 (30 days)
#	Journal	Papers	Last 7 days
1	Transportation Research Part E Logistics and Transportation Review	52	0
2	European Journal of Operational Research	35	0
3	Annals of Operations Research	29	5
3	Journal of Optimization Theory and Applications	29	6
5	International Journal of Production Economics	25	1
6	Operational Research	22	0
7	Computers & Operations Research	19	0
8	Omega	12	1
9	Decision Support Systems	9	0
10	Mathematical Programming	5	0
11	OR Spectrum	3	0

Most-used equations and models

Top 10 · 2026-09-27 – 2026-10-26 (30 days)
#	Equation or model	Formula	Papers
1	Linear and integer programming	$\min_{x}\ c^\top x\ \ \text{s.t.}\ \ A x \le b,\ x \ge 0,\ x_j \in \mathbb{Z}\ (j \in I)$	29
2	Logistic regression (logit)	$\Pr(y = 1 \mid x) = \frac{1}{1 + e^{-x^\top\beta}}$	8
3	Data envelopment analysis (DEA)	$\max_{u, v}\ \frac{\sum_r u_r\, y_{r0}}{\sum_i v_i\, x_{i0}}\ \ \text{s.t.}\ \ \frac{\sum_r u_r\, y_{rj}}{\sum_i v_i\, x_{ij}} \le 1\ \ \forall j$	4
3	Gradient descent	$\theta_{t+1} = \theta_t - \eta\, \nabla_\theta \mathcal{L}(\theta_t)$	4
3	Proximal policy optimization (PPO)	$L(\theta) = E_t\big[\min\big(r_t(\theta)\hat A_t,\ \mathrm{clip}(r_t(\theta), 1 - \epsilon, 1 + \epsilon)\,\hat A_t\big)\big]$	4
6	Nash equilibrium	$u_i(s_i^{}, s_{-i}^{}) \ge u_i(s_i, s_{-i}^{*})\quad \forall i,\ \forall s_i$	3
7	Expected shortfall (CVaR)	$\mathrm{ES}_\alpha(L) = \frac{1}{1 - \alpha}\int_\alpha^{1} \mathrm{VaR}_u(L)\,du$	2
7	Gini coefficient	$G = \frac{\sum_{i=1}^{n}\sum_{j=1}^{n} \lvert x_i - x_j \rvert}{2 n^2 \bar x}$	2
7	LASSO	$\hat\beta = \operatorname*{arg\,min}_{\beta}\ \lVert y - X\beta \rVert_2^2 + \lambda \lVert \beta \rVert_1$	2
7	Random forest	$\hat f(x) = \frac{1}{B}\sum_{b=1}^{B} T_b(x)$	2

Most-used data

Top 10 · 2026-09-27 – 2026-10-26 (30 days)
#	Data category	Most-mentioned datasets	Papers
1	Stock market indices	S&P 500 (4), Euro Stoxx / DAX (1)	5
2	Macroeconomic and development indicators	Eurostat (2)	2
3	China household and social surveys	China Health and Nutrition Survey (CHNS) (1)	1
3	Corporate filings and text	Earnings call transcripts (1)	1
3	ESG and sustainability ratings	Refinitiv ESG (ASSET4) (1)	1
3	Financial data platforms	Yahoo Finance (1)	1
3	Optimization benchmark instances	PSPLIB (1)	1
3	Ownership and insider trading	Thomson Reuters 13F holdings (1)	1
3	Social media data	YouTube / TikTok (1)	1
3	US stock market data	CRSP (1)	1

Latest operations research papers

Latest operations research papers
Date	Title	Journal	Authors	Affiliations
2026-10-23	Sustainable development goals and waste management in the wheat supply chain under uncertain conditions: implications from an emerging economy	Annals of Operations Research	Mahsa Rezaee Shirsavar, Misagh Rahbari, Mohammad Mohammadi	Kharazmi University; Islamic Azad University, Tehran; Islamic Azad University, West Tehran Branch
2026-10-23	Learning Dominant States in Elementary Resource Constrained Shortest Path Problems	Annals of Operations Research	Saverio Basso, Alessandro Minoli, Matteo Salani	Dalle Molle Institute for Artificial Intelligence Research
2026-10-22	Cut the chit-chat: a new framework for the application of generative language models for portfolio construction	Annals of Operations Research	Francesco A. Fabozzi, Ionuţ Florescu	Stevens Institute of Technology
2026-10-21	A regional multi-criteria assessment of European education and training systems	Omega	Fernando J. Osório, Luís Cândido Dias	Universidade do Porto; INESC TEC; University of Coimbra
2026-10-20	The Shapley-solidarity Value Revisited	Journal of Optimization Theory and Applications	Xun-Feng Hu	Guangxi University
2026-10-20	Generalized Interval Variational Inequalities and Interval Optimization Problems on Hadamard Manifolds	Journal of Optimization Theory and Applications	Shenglan Chen, Song Wang	Chongqing University of Posts and Telecommunications; Curtin University
2026-10-20	Scaffolding the void: Digital platforms as intermediaries in supply chain traceability	International Journal of Production Economics	Quynh Do, Claudia Colicchia, Alessandro Creazza et al.	Lancaster University; Politecnico di Milano; University Carlo Cattaneo
2026-10-20	Correction: Second-Order Characterizations of Tilt Stability in Composite Optimization	Journal of Optimization Theory and Applications	B.Sh. Mordukhovich, Peipei Tang, Chengjing Wang	Wayne State University; Hangzhou City University; Southwest Jiaotong University
2026-10-20	Admissible and Time-Optimal Control onto a Surface for Arbitrary Linear Systems	Journal of Optimization Theory and Applications	V. I. Korobov, Oleh Vozniak	V. N. Karazin Kharkiv National University
2026-10-20	$$\sigma $$-Angle Boundedness and p-Cyclic Monotonicity for Affine Subspaces	Journal of Optimization Theory and Applications	Jean-Pierre Crouzeix, Ernesto Oré, Eladio Ocaña	University of Clermont Auvergne; Clermont Université; National University of Engineering
2026-10-20	The impact of AI investment on shipping outsourcing strategies for easing congestion under coastal piggybacking regulation	Annals of Operations Research	Naimeng Liu, Cheng Zhang, Bin Liu	Shanghai University of Electric Power; Fudan University; University of Shanghai for Science and Technology
2026-10-20	Geometric portfolio equilibria: constraint curvature and asset pricing	Annals of Operations Research	Массимилиано Феррара	University of Reggio Calabria; Bocconi University; Okan University
2026-10-20	Convergence Analysis of Stochastic Accelerated Gradient Methods for Generalized Smooth Optimizations	Journal of Optimization Theory and Applications	Chenhao Yu, Yusu Hong, Junhong Lin	Zhejiang University
2026-10-19	Optimizing product return timing in integrated viable circular manufacturing systems: a two-stage stochastic approach	Annals of Operations Research	Sobhan Mostafayi Darmian, Fabio Sgarbossa	Norwegian University of Science and Technology
2026-10-19	Advances in progressive decoupling methodology for problem decomposition in optimization	Mathematical Programming	Ralph Tyrrell Rockafellar	University of Washington

Questions this page answers

What are the most common topics in recent operations research?: In the last 30 days, the most frequent OpenAlex keywords in papers from the tracked operations research journals were “mixed-integer linear programming” (12), “demand uncertainty” (8), “supply chain coordination” (8), “supply chain resilience” (8) and “carbon emission reduction” (7).
Which universities and institutions publish the most operations research?: In the last 30 days, the institutions with the most papers in the tracked operations research journals were Beihang University (9), Southwest Jiaotong University (8), Hong Kong Polytechnic University (7), Beijing Jiaotong University (6) and Dalian University of Technology (6).
Which countries publish the most operations research?: Counting papers with at least one author at an institution in the country, the leaders over the last 30 days were China (112), United States (29), United Kingdom (15), France (13) and Hong Kong (12).
Which equations and models do recent operations research papers use most?: Counting papers that mention them by name in the title, abstract, keywords or full text, the most frequent in the tracked operations research journals over the last 30 days were Linear and integer programming (29), Logistic regression (logit) (8), Data envelopment analysis (DEA) (4), Gradient descent (4) and Proximal policy optimization (PPO) (4).
What data do recent operations research papers use?: Counting papers that mention a dataset by name, the kinds of data used most over the last 30 days were Stock market indices (5), Macroeconomic and development indicators (2), China household and social surveys (1), Corporate filings and text (1) and ESG and sustainability ratings (1); the most-mentioned datasets were S&P 500 (4), Eurostat (2), China Health and Nutrition Survey (CHNS) (1), CRSP (1) and Earnings call transcripts (1).
How current is this data?: It is rebuilt from OpenAlex 4 times a day (00:00, 06:00, 12:00, 18:00, UTC+09:00); the last update was 2026-10-26 11:39 UTC+09:00. OpenAlex usually indexes new papers within a few days of publication.