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A Presentation of REGATE

A Presentation of REGATE. Romain Zeiliger CNRS-GATE 93 Chemin des Mouilles, 69130 Ecully, France. zeiliger@gate.cnrs.fr. Downloading REGATE : http://www.gate.cnrs.fr/~zeiliger/regate/regate.htm This presentation : http://www.gate.cnrs.fr/~zeiliger/regate/RegateIntro.ppt. Technical Aspects.

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A Presentation of REGATE

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  1. A Presentation of REGATE Romain ZeiligerCNRS-GATE 93 Chemin des Mouilles, 69130Ecully, France.zeiliger@gate.cnrs.fr Downloading REGATE :http://www.gate.cnrs.fr/~zeiliger/regate/regate.htm This presentation : http://www.gate.cnrs.fr/~zeiliger/regate/RegateIntro.ppt ME2 - CNRS-GATE July 7, 00

  2. Technical Aspects • Windows 95, 98 and NT platforms • Internet protocols (TCP/IP) • One software only : used as client or server ME2 - CNRS-GATE July 7, 00

  3. Architecture server Liaison Internet (TCP/IP) Players (clients) ME2 - CNRS-GATE July 7, 00

  4. Server screen sample ME2 - CNRS-GATE July 7, 00

  5. Player screen sample ME2 - CNRS-GATE July 7, 00

  6. REGATE highlights • Simple : • one software : works as server or client ! • standard player interface : no interface design ! • Flexible : • script programming : • 12 statements only. • multi-lingual • one script encompasses several languages • each player can interact in his own language • Efficient : • easy debug using artificial players ME2 - CNRS-GATE July 7, 00

  7. Preparing an Experiment • A three stages process : • 1-Scripting • 2-Debugging • one computer - simulating players • n computers - using artificial players • 3-Testing • n computers - using human players ME2 - CNRS-GATE July 7, 00

  8. 1- Scripting with REGATE • Every experiment has to be programmed as a script • Scripts are object-Event based: • 4 predefined objects : SERVER, J1, J2, J3 • 3 players roles • 12 statements only. • No predefined message (except START) • Ex • Script can be enhanced by specific programming. ME2 - CNRS-GATE July 7, 00

  9. Script structure Statements section Data section ME2 - CNRS-GATE July 7, 00

  10. Messaging START Regate server objects SG SG END END message Regate player J1 Regate player J2 statements ME2 - CNRS-GATE July 7, 00

  11. Players and groups Regate server Regate player J1 Regate player J2 roles Regate player J1 Regate player J2 Regate player J2 Regate player J1 ME2 - CNRS-GATE July 7, 00

  12. Roles Regate server Send to every J1 J2 J1 J1 J1 roles ME2 - CNRS-GATE July 7, 00

  13. Variables • Each object (SERVER, J1, J2, J3) has its own variables • Messages can “transport” variables from the SERVER to any player and vv. Regate server Regate server definition transport OFFRE1OK,offre1 SG,d Regate player ME2 - CNRS-GATE July 7, 00

  14. Advanced statement example Send to every J1 message RESJEU1 If session parameter is 1 Variable s and variable gj (with j=player number) ME2 - CNRS-GATE July 7, 00

  15. Player interface Script Player screen ME2 - CNRS-GATE July 7, 00

  16. Multi-lingual features All texts in english for all players Multi-lingual experiments : Each player select his own language ME2 - CNRS-GATE July 7, 00

  17. 2- Debugging the scripts in simulation mode Script window Simulated players screens Goal : check the program’s syntax and logic ME2 - CNRS-GATE July 7, 00

  18. 3- Debugging the scripts with artificial players Running the server with artificial players option Regate server Artificial J1 Artificial J2 Defining input variables range for artificial values Artificial J1 Artificial J1 Goal : check the experiment implementation in context ME2 - CNRS-GATE July 7, 00

  19. Before running the experiment Defining the data to be recorded : Defining the experiment session plan : Defining the data to be displayed on the server : ME2 - CNRS-GATE July 7, 00

  20. Running the experiment Regate.exe SERVER IP N° 156.18.56.107 Experiment progress Regate.exe CLIENT 156.18.56.107 Regate.exe CLIENT 156.18.56.107 Regate.exe CLIENT 156.18.56.107 Feedback Regate.exe CLIENT 156.18.56.107 ME2 - CNRS-GATE July 7, 00

  21. Limitations & future work • Limitations • integers only • 16 players • limited statement set • one group restriction in some cases • Future work • overcome limitations • improve recovery on errors • improve script language (extended to Microsoft VB ?) • improve server and player interface • going HTTP ? ME2 - CNRS-GATE July 7, 00

  22. REGATE use • 31 scripts in library • Ultimatum bargaining games • Public goods • Principal agents • Others (ex : bank panic ...) • Experiments in : • GATE, Université Lumière, Lyon. • GRESE, Université de Franche-Comté, Besançon. • BETA, Université Louis Pasteur, Strasbourg. • Humbolt Universitat, Berlin. • University of Karlsruhe. • Pittsburg University. • Purdue University, West Lafayette. • CIRANO, Université de Montreal. ME2 - CNRS-GATE July 7, 00

  23. REGATE statement set Advanced • tell(thetext) • tell(Txx,thetext) • tell(-) • tell() • ask(OK) • ask(NUM,invar,max) • ask(NSB,invar,max,min,echoexpression) • ask(TEX,invar) • ask(ALT,invar,label1,label2,value1,value2) • ask(TRI,inVar,Label1,Label2,Label3,value1,value2,value3) • send(SERVER,message,var1,var2,...) • send(Jx,message,var1,var2,...) • set(avar=value) • (avar=value)any_statement Basics • timer(Tend,Twarning,TextEnd,TextWarning) • pause(delay_in_milliseconds) • even(avar) • gains(AVERAGE,avar,gainrow,validrounds,taux) • random(avar,max) • gains(AVERAGE,inVar,gainRow,LastRounds,Taux) • publicdisplay(ttt [var] ttt) • table(nrow,ncol,labelrow1,labelrow2,...) • tableupdate(a11,a12,a13,...) • traces(thetext [var] and etc ) • feedback(label1,label2,label3,...) • feedbackupdate(var1,var2,var3...) ME2 - CNRS-GATE July 7, 00

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