According to our dataset most DEA-related journal papers have identified keywords, and so approximately 25,137 distinct keywords were used. The following Table 2 shows the first 50 most used keywords. There is no doubt that Data Envelopment Analysis, DEA, or DEA models are the most used keywords with number of article of 9989. Moreover, efficiency, decision-making, technical efficiency, linear programming, and productivity are also most popular keywords in the existing DEA-related articles.
Table 2. The 50 most used keywords by number of DEA-related articles.
| No. | Keywords | No. of publications |
|---|---|---|
| 1 | Data Envelopment Analysis, Data Envelopment Analysis (DEA), DEA, or DEA models | 9989 |
| 2 | Efficiency | 2382 |
| 3 | Decision making | 1048 |
| 4 | Technical efficiency | 876 |
| 5 | Linear programming | 722 |
| 5 | Productivity | 722 |
| 7 | Mathematical models | 574 |
| 8 | Data reduction | 535 |
| 9 | Benchmarking | 502 |
| 10 | Decision making unit, Decision-making units | 479 |
| 11 | Human, Humans | 477 |
| 12 | Efficiency measurement | 440 |
| 13 | Optimization | 368 |
| 14 | Malmquist index, Malmquist Productivity Index | 359 |
| 15 | Operations Research | 337 |
| 16 | Data handling | 308 |
| 17 | China | 298 |
| 18 | Energy efficiency | 286 |
| 19 | performance assessment | 276 |
| 20 | Regression analysis | 275 |
| 21 | Economics | 272 |
| 21 | Performance | 272 |
| 21 | Bootstrapping, bootstrap | 272 |
| 24 | Efficiency, Organizational | 265 |
| 25 | Returns to scale | 253 |
| 26 | Data analysis | 244 |
| 27 | Eurasia | 224 |
| 27 | United States | 224 |
| 29 | Industry | 208 |
| 29 | Performance evaluation | 208 |
| 31 | Relative efficiency | 207 |
| 32 | Banking | 193 |
| 32 | Ranking | 193 |
| 34 | Problem solving | 184 |
| 35 | Data envelopment | 183 |
| 36 | Costs | 177 |
| 37 | Resource allocation | 176 |
| 38 | Efficiency analysis | 173 |
| 39 | Europe | 169 |
| 40 | Decision theory | 168 |
| 41 | Competition | 163 |
| 42 | Performance measurement | 157 |
| 43 | Mathematical Programming | 154 |
| 44 | Sustainable development | 151 |
| 45 | Total factor productivity | 149 |
| 46 | Organization and management | 148 |
| 47 | Profitability | 141 |
| 48 | Numerical model | 138 |
| 49 | Sensitivity analysis | 136 |
| 50 | Methodology | 130 |
