| Airlines | Data: Coelli, Grifell-Tatje, and Perelman (2002). | 
| bootstrap_basic | Bootstrapping DEA | 
| Coelli_1998 | Data: Coelli, Rao and Battese (1998). | 
| Coll_Blasco_2006 | Data: Coll and Blasco (2006). | 
| cross_efficiency | Cross efficiency analysis | 
| cross_efficiency_fuzzy | Cross efficiency fuzzy analysis | 
| Departments | Data: Tomkins and Green (1988). | 
| Doyle_Green_1994 | Data: Doyle and Green (1994). | 
| Economy | Data: Wang and Lan (2011). | 
| EconomyLong | Data: Wang and Lan (2011). | 
| efficiencies | Objective scores | 
| efficiencies.dea | Objective scores | 
| efficiencies.dea_fuzzy | Efficiencies | 
| eff_dmus | Efficient DMUs. | 
| Electric_plants | Data: Färe, Grosskopf and Kokkelenberg (1989). | 
| extreme_efficient | Extreme efficient DMUs | 
| Fortune500 | Data: Zhu (2014). | 
| Fried1993 | Data: Fried, Knox Lovell and Schmidt (1993). | 
| FuzzyExample | Data: Fuzzy data reading example. | 
| Golany_Roll_1989 | Data: Golany and Roll (1989). | 
| Grifell_Lovell_1999 | Data: Grifell-Tatjé and Lovell (1999). | 
| Guo_Tanaka_2001 | Data: Guo and Tanaka (2001). | 
| Hotels | Data: Wu, Tsai and Zhou (2011). | 
| Hua_Bian_2007 | Data: Hua and Bian (2007). | 
| is.dea | dea class check. | 
| is.deadata | deadata class check. | 
| is.deadata_fuzzy | deadata_fuzzy class check. | 
| is.dea_fuzzy | dea_fuzzy class check. | 
| is.friends | Friends check. | 
| Kao_Liu_2003 | Data: Kao and Liu (2003). | 
| lambdas | Lambdas | 
| Leon2003 | Data: Leon, Liern, Ruiz and Sirvent (2003). | 
| Libraries | Data: Cooper, Seiford and Tone (2007). | 
| Lim_Zhu_2015 | Data: Lim and Zhu (2015). | 
| make_deadata | make_deadata | 
| make_deadata_fuzzy | make_deadata_fuzzy | 
| make_malmquist | make_malmquist | 
| malmquist_index | Malmquist index | 
| maximal_friends | Maximal friends of a set of DMUs. | 
| modelfuzzy_guotanaka | Fuzzy DEA model | 
| modelfuzzy_kaoliu | Fuzzy DEA model. | 
| modelfuzzy_possibilistic | Possibilistic Fuzzy DEA model. | 
| model_additive | Additive DEA model. | 
| model_addmin | Additive-min DEA model. | 
| model_addsupereff | Additive super-efficiency DEA model. | 
| model_basic | Basic (radial and directional) DEA model. | 
| model_deaps | Preference Structure DEA model. | 
| model_dir | Directional DEA model. | 
| model_fdh | Free disposal hull (FDH) model. | 
| model_lgo | Linear Generalized Oriented DEA model. | 
| model_multiplier | Multiplier DEA model | 
| model_nonradial | Non-radial DEA model. | 
| model_profit | Profit efficiency DEA model. | 
| model_qgo | Quadratically Constrained CRS Generalized Oriented DEA model. | 
| model_rdm | Range directional model. | 
| model_sbmeff | Slack based measure (SBM) of efficiency model. | 
| model_sbmsupereff | Slack based measure of superefficiency model | 
| model_supereff | Radial super-efficiency basic DEA model | 
| multipliers | Multipliers | 
| PFT1981 | Data: Charnes, Cooper and Rhodes (1981). | 
| plot.dea | Plot for DEA models. | 
| plot.dea_fuzzy | Plot for fuzzy DEA models. | 
| Power_plants | Data: Tone (2002). | 
| print.deadata | deadata class print method | 
| print.deadata_fuzzy | deadata_fuzzy class print method | 
| read_data | read_data | 
| read_data_fuzzy | read_data_fuzzy | 
| read_malmquist | read_malmquist | 
| references | References | 
| rts | Returns to scale | 
| Ruggiero2007 | Data: Ruggiero (2007). | 
| slacks | Slacks | 
| summary.dea | Summary conventional DEA models. | 
| summary.dea_fuzzy | Summary Fuzzy DEA models. | 
| Supply_Chain | Data: Sanei and Mamizadeh Chatghayeb (2013). | 
| targets | Targets | 
| Tone2001 | Data: Tone (2001). | 
| Tone2003 | Data: Tone (2003). | 
| undesirable_basic | Undesirable inputs and outputs for basic DEA model. |