---
title: "Research topics — page 5 of 7"
description: "Browse all 380 research topics tracked by Scholar4AI, including profiles outside the latest top rankings. Page 5 of 7: Papers on “multi-objective optimization” to Papers on “scale development”."
url: https://scholar4ai.com/keywords/directory/page/5
markdown_url: https://scholar4ai.com/keywords/directory/page/5.md
license: CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/)
share_text: "Browse all 380 research topics tracked by Scholar4AI, including profiles outside the latest top rankings. Page 5 of 7: Papers on “multi-objective optimization” to Papers on “scale development”. (as of 2026-11-05)"
data_url: https://scholar4ai.com/data/rankings.json
updated: 2026-11-05T06:02:37+09:00
window: 2026-10-07 to 2026-11-05
source: OpenAlex (CC0)
---

# Research topics — page 5 of 7

Browse all 380 research topics tracked by Scholar4AI, including profiles outside the latest top rankings.

[Keyword rankings](https://scholar4ai.com/rankings/keywords.md)

Pages: [Previous](https://scholar4ai.com/keywords/directory/page/4.md) · [1](https://scholar4ai.com/keywords/directory.md) · [2](https://scholar4ai.com/keywords/directory/page/2.md) · [3](https://scholar4ai.com/keywords/directory/page/3.md) · [4](https://scholar4ai.com/keywords/directory/page/4.md) · [5](https://scholar4ai.com/keywords/directory/page/5.md) · [6](https://scholar4ai.com/keywords/directory/page/6.md) · [7](https://scholar4ai.com/keywords/directory/page/7.md) · [Next](https://scholar4ai.com/keywords/directory/page/6.md)

*Entries 241–300 of 380, A–Z*

| Profile | Research covered |
|---|---|
| [Papers on “multi-objective optimization”](https://scholar4ai.com/keywords/multi-objective-optimization.md) | The keyword “multi-objective optimization” appeared in 30 papers in the last 30 days (2026-10-07 to 2026-11-05), ranking #11 of 18,849 keywords. |
| [Papers on “multi-scale feature fusion”](https://scholar4ai.com/keywords/multi-scale-feature-fusion.md) | From 2017 to 2026 (so far), the keyword “multi-scale feature fusion” appeared in 785 papers in the tracked journals, most of them in AI (776), information systems (7) and… |
| [Papers on “multi-task learning”](https://scholar4ai.com/keywords/multi-task-learning.md) | From 2017 to 2026 (so far), the keyword “multi-task learning” appeared in 1,453 papers in the tracked journals, most of them in AI (1,355), information systems (44) and… |
| [Papers on “multimodal fusion”](https://scholar4ai.com/keywords/multimodal-fusion.md) | The keyword “multimodal fusion” appeared in 31 papers in the last 30 days (2026-10-07 to 2026-11-05), ranking #10 of 18,849 keywords. |
| [Papers on “multinational corporations”](https://scholar4ai.com/keywords/multinational-corporations.md) | From 2017 to 2026 (so far), the keyword “multinational corporations” appeared in 2,001 papers in the tracked journals, most of them in management (1,231), economics (424) and… |
| [Papers on “Nash equilibrium”](https://scholar4ai.com/keywords/nash-equilibrium.md) | From 2017 to 2026 (so far), the keyword “Nash equilibrium” appeared in 1,220 papers in the tracked journals, most of them in operations research (488), economics (392) and AI… |
| [Papers on “noise robustness”](https://scholar4ai.com/keywords/noise-robustness.md) | From 2017 to 2026 (so far), the keyword “noise robustness” appeared in 1,122 papers in the tracked journals, most of them in AI (1,061), operations research (23) and information… |
| [Papers on “non-convex optimization”](https://scholar4ai.com/keywords/non-convex-optimization.md) | From 2017 to 2026 (so far), the keyword “non-convex optimization” appeared in 1,200 papers in the tracked journals, most of them in operations research (708), AI (439) and… |
| [Papers on “non-state-owned enterprises”](https://scholar4ai.com/keywords/non-state-owned-enterprises.md) | From 2017 to 2026 (so far), the keyword “non-state-owned enterprises” appeared in 635 papers in the tracked journals, most of them in finance (431), economics (117) and… |
| [Papers on “object detection”](https://scholar4ai.com/keywords/object-detection.md) | From 2017 to 2026 (so far), the keyword “object detection” appeared in 1,229 papers in the tracked journals, most of them in AI (1,184), information systems (22) and operations… |
| [Papers on “OECD countries”](https://scholar4ai.com/keywords/oecd-countries.md) | From 2017 to 2026 (so far), the keyword “OECD countries” appeared in 1,113 papers in the tracked journals, most of them in economics (727), management (119) and finance (103). |
| [Papers on “oil prices”](https://scholar4ai.com/keywords/oil-prices.md) | From 2017 to 2026 (so far), the keyword “oil prices” appeared in 1,334 papers in the tracked journals, most of them in economics (891), finance (340) and operations research (36). |
| [Papers on “older adults”](https://scholar4ai.com/keywords/older-adults.md) | The keyword “older adults” appeared in 28 papers in the last 30 days (2026-10-07 to 2026-11-05), ranking #17 of 18,849 keywords. |
| [Papers on “online learning”](https://scholar4ai.com/keywords/online-learning.md) | From 2017 to 2026 (so far), the keyword “online learning” appeared in 2,480 papers in the tracked journals, most of them in higher education and research (1,280), AI (705) and… |
| [Papers on “online reviews”](https://scholar4ai.com/keywords/online-reviews.md) | From 2017 to 2026 (so far), the keyword “online reviews” appeared in 1,262 papers in the tracked journals, most of them in information systems (324), tourism and hospitality… |
| [Papers on “organizational culture”](https://scholar4ai.com/keywords/organizational-culture.md) | From 2017 to 2026 (so far), the keyword “organizational culture” appeared in 1,069 papers in the tracked journals, most of them in management (523), finance (99) and health… |
| [Papers on “outliers”](https://scholar4ai.com/keywords/outliers.md) | Historical profile (data snapshot 2026-11-04). |
| [Papers on “overfitting”](https://scholar4ai.com/keywords/overfitting.md) | From 2017 to 2026 (so far), the keyword “overfitting” appeared in 1,191 papers in the tracked journals, most of them in AI (979), statistics (69) and operations research (56). |
| [Papers on “ownership structure”](https://scholar4ai.com/keywords/ownership-structure.md) | From 2017 to 2026 (so far), the keyword “ownership structure” appeared in 855 papers in the tracked journals, most of them in finance (401), economics (190) and management (145). |
| [Papers on “parameter estimation”](https://scholar4ai.com/keywords/parameter-estimation.md) | From 2017 to 2026 (so far), the keyword “parameter estimation” appeared in 1,162 papers in the tracked journals, most of them in statistics (551), AI (288) and operations… |
| [Papers on “particle swarm optimization”](https://scholar4ai.com/keywords/particle-swarm-optimization.md) | From 2017 to 2026 (so far), the keyword “particle swarm optimization” appeared in 1,708 papers in the tracked journals, most of them in AI (1,267), operations research (321) and… |
| [Papers on “perceived usefulness”](https://scholar4ai.com/keywords/perceived-usefulness.md) | From 2017 to 2026 (so far), the keyword “perceived usefulness” appeared in 1,234 papers in the tracked journals, most of them in higher education and research (366), management… |
| [Papers on “political connections”](https://scholar4ai.com/keywords/political-connections.md) | Historical profile (data snapshot 2026-11-04). |
| [Papers on “population aging”](https://scholar4ai.com/keywords/population-aging.md) | From 2017 to 2026 (so far), the keyword “population aging” appeared in 1,146 papers in the tracked journals, most of them in economics (405), health economics and policy (362)… |
| [Papers on “portfolio diversification”](https://scholar4ai.com/keywords/portfolio-diversification.md) | From 2017 to 2026 (so far), the keyword “portfolio diversification” appeared in 1,018 papers in the tracked journals, most of them in finance (613), economics (303) and… |
| [Papers on “portfolio optimization”](https://scholar4ai.com/keywords/portfolio-optimization.md) | From 2017 to 2026 (so far), the keyword “portfolio optimization” appeared in 1,533 papers in the tracked journals, most of them in finance (521), operations research (435) and… |
| [Papers on “principal-agent problem”](https://scholar4ai.com/keywords/principal-agent-problem.md) | From 2017 to 2026 (so far), the keyword “principal-agent problem” appeared in 1,078 papers in the tracked journals, most of them in finance (511), economics (332) and accounting… |
| [Papers on “privacy preservation”](https://scholar4ai.com/keywords/privacy-preservation.md) | From 2017 to 2026 (so far), the keyword “privacy preservation” appeared in 926 papers in the tracked journals, most of them in AI (651), information systems (164) and operations… |
| [Papers on “private enterprises”](https://scholar4ai.com/keywords/private-enterprises.md) | From 2017 to 2026 (so far), the keyword “private enterprises” appeared in 848 papers in the tracked journals, most of them in finance (432), economics (222) and management (134). |
| [Papers on “pseudo-labeling”](https://scholar4ai.com/keywords/pseudo-labeling.md) | From 2017 to 2026 (so far), the keyword “pseudo-labeling” appeared in 1,178 papers in the tracked journals, most of them in AI (1,142), information systems (24) and operations… |
| [Papers on “public debt”](https://scholar4ai.com/keywords/public-debt.md) | Historical profile (data snapshot 2026-11-04). |
| [Papers on “public diplomacy”](https://scholar4ai.com/keywords/public-diplomacy.md) | Historical profile (data snapshot 2026-11-04). |
| [Papers on “purchase decision”](https://scholar4ai.com/keywords/purchase-decision.md) | From 2017 to 2026 (so far), the keyword “purchase decision” appeared in 838 papers in the tracked journals, most of them in marketing (262), information systems (194) and… |
| [Papers on “purchase intention”](https://scholar4ai.com/keywords/purchase-intention.md) | From 2017 to 2026 (so far), the keyword “purchase intention” appeared in 1,665 papers in the tracked journals, most of them in marketing (657), management (445) and information… |
| [Papers on “quality-adjusted life years”](https://scholar4ai.com/keywords/quality-adjusted-life-years.md) | From 2017 to 2026 (so far), the keyword “quality-adjusted life years” appeared in 1,136 papers in the tracked journals, most of them in health economics and policy (1,112),… |
| [Papers on “R&D investment”](https://scholar4ai.com/keywords/r-d-investment.md) | From 2017 to 2026 (so far), the keyword “R&D investment” appeared in 2,005 papers in the tracked journals, most of them in economics (740), finance (581) and management (450). |
| [Papers on “random forest”](https://scholar4ai.com/keywords/random-forest.md) | From 2017 to 2026 (so far), the keyword “random forest” appeared in 1,771 papers in the tracked journals, most of them in AI (811), operations research (221) and statistics (185). |
| [Papers on “recommender systems”](https://scholar4ai.com/keywords/recommender-systems.md) | From 2017 to 2026 (so far), the keyword “recommender systems” appeared in 1,630 papers in the tracked journals, most of them in AI (1,157), information systems (309) and higher… |
| [Papers on “recurrent neural networks”](https://scholar4ai.com/keywords/recurrent-neural-networks.md) | From 2017 to 2026 (so far), the keyword “recurrent neural networks” appeared in 1,260 papers in the tracked journals, most of them in AI (1,056), operations research (61) and… |
| [Papers on “regional disparities”](https://scholar4ai.com/keywords/regional-disparities.md) | From 2017 to 2026 (so far), the keyword “regional disparities” appeared in 1,560 papers in the tracked journals, most of them in economics (816), health economics and policy… |
| [Papers on “regional heterogeneity”](https://scholar4ai.com/keywords/regional-heterogeneity.md) | From 2017 to 2026 (so far), the keyword “regional heterogeneity” appeared in 1,971 papers in the tracked journals, most of them in economics (896), finance (741) and management… |
| [Papers on “reinforcement learning”](https://scholar4ai.com/keywords/reinforcement-learning.md) | The keyword “reinforcement learning” appeared in 25 papers in the last 30 days (2026-10-07 to 2026-11-05), ranking #22 of 18,849 keywords. |
| [Papers on “renewable energy”](https://scholar4ai.com/keywords/renewable-energy.md) | From 2017 to 2026 (so far), the keyword “renewable energy” appeared in 1,370 papers in the tracked journals, most of them in economics (979), management (169) and finance (72). |
| [Papers on “representation learning”](https://scholar4ai.com/keywords/representation-learning.md) | From 2017 to 2026 (so far), the keyword “representation learning” appeared in 863 papers in the tracked journals, most of them in AI (818), information systems (22) and… |
| [Papers on “research agenda”](https://scholar4ai.com/keywords/research-agenda.md) | From 2017 to 2026 (so far), the keyword “research agenda” appeared in 1,154 papers in the tracked journals, most of them in management (544), information systems (153) and… |
| [Papers on “research collaboration”](https://scholar4ai.com/keywords/research-collaboration.md) | Historical profile (data snapshot 2026-11-04). |
| [Papers on “research trends”](https://scholar4ai.com/keywords/research-trends.md) | From 2017 to 2026 (so far), the keyword “research trends” appeared in 1,873 papers in the tracked journals, most of them in management (564), higher education and research (323)… |
| [Papers on “resource allocation”](https://scholar4ai.com/keywords/resource-allocation.md) | From 2017 to 2026 (so far), the keyword “resource allocation” appeared in 1,590 papers in the tracked journals, most of them in operations research (418), economics (289) and AI… |
| [Papers on “resource curse”](https://scholar4ai.com/keywords/resource-curse.md) | From 2017 to 2026 (so far), the keyword “resource curse” appeared in 756 papers in the tracked journals, most of them in economics (701), management (26) and finance (19). |
| [Papers on “resource-based view”](https://scholar4ai.com/keywords/resource-based-view.md) | From 2017 to 2026 (so far), the keyword “resource-based view” appeared in 1,334 papers in the tracked journals, most of them in management (752), operations research (108) and… |
| [Papers on “retail investors”](https://scholar4ai.com/keywords/retail-investors.md) | Historical profile (data snapshot 2026-11-04). |
| [Papers on “risk aversion”](https://scholar4ai.com/keywords/risk-aversion.md) | From 2017 to 2026 (so far), the keyword “risk aversion” appeared in 2,042 papers in the tracked journals, most of them in economics (969), finance (512) and operations research… |
| [Papers on “risk management”](https://scholar4ai.com/keywords/risk-management.md) | From 2017 to 2026 (so far), the keyword “risk management” appeared in 1,444 papers in the tracked journals, most of them in finance (518), economics (334) and operations research… |
| [Papers on “risk perception”](https://scholar4ai.com/keywords/risk-perception.md) | From 2017 to 2026 (so far), the keyword “risk perception” appeared in 1,441 papers in the tracked journals, most of them in economics (265), management (263) and information… |
| [Papers on “risk preferences”](https://scholar4ai.com/keywords/risk-preferences.md) | From 2017 to 2026 (so far), the keyword “risk preferences” appeared in 1,123 papers in the tracked journals, most of them in economics (626), finance (173) and operations… |
| [Papers on “risk-taking”](https://scholar4ai.com/keywords/risk-taking.md) | From 2017 to 2026 (so far), the keyword “risk-taking” appeared in 988 papers in the tracked journals, most of them in finance (347), economics (292) and management (204). |
| [Papers on “robust estimation”](https://scholar4ai.com/keywords/robust-estimation.md) | From 2017 to 2026 (so far), the keyword “robust estimation” appeared in 487 papers in the tracked journals, most of them in statistics (344), AI (59) and economics (44). |
| [Papers on “robust optimization”](https://scholar4ai.com/keywords/robust-optimization.md) | From 2017 to 2026 (so far), the keyword “robust optimization” appeared in 1,149 papers in the tracked journals, most of them in operations research (935), AI (144) and finance… |
| [Papers on “Russian invasion of Ukraine”](https://scholar4ai.com/keywords/russian-invasion-of-ukraine.md) | From 2017 to 2026 (so far), the keyword “Russian invasion of Ukraine” appeared in 1,115 papers in the tracked journals, most of them in economics (472), finance (414) and… |
| [Papers on “scale development”](https://scholar4ai.com/keywords/scale-development.md) | From 2017 to 2026 (so far), the keyword “scale development” appeared in 1,038 papers in the tracked journals, most of them in management (299), higher education and research… |

Pages: [Previous](https://scholar4ai.com/keywords/directory/page/4.md) · [1](https://scholar4ai.com/keywords/directory.md) · [2](https://scholar4ai.com/keywords/directory/page/2.md) · [3](https://scholar4ai.com/keywords/directory/page/3.md) · [4](https://scholar4ai.com/keywords/directory/page/4.md) · [5](https://scholar4ai.com/keywords/directory/page/5.md) · [6](https://scholar4ai.com/keywords/directory/page/6.md) · [7](https://scholar4ai.com/keywords/directory/page/7.md) · [Next](https://scholar4ai.com/keywords/directory/page/6.md)

## Cite this page

Scholar4AI. (2026). Research topics — page 5 of 7. Journal and Conference Research Rankings. Retrieved November 5, 2026, from https://scholar4ai.com/keywords/directory/page/5

```bibtex
@misc{scholar4ai-keywords-directory-page-5,
  author = {{Scholar4AI}},
  title = {Research topics — page 5 of 7},
  year = {2026},
  howpublished = {\url{https://scholar4ai.com/keywords/directory/page/5}},
  urldate = {2026-11-05},
  note = {Journal and Conference Research Rankings; data from OpenAlex (CC0); licensed CC BY-NC 4.0}
}
```

License: CC BY-NC 4.0 (https://creativecommons.org/licenses/by-nc/4.0/).