topic Re: Formal Grammar definition for CGA? in ArcGIS CityEngine Questions https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680978#M8965 <HTML><HEAD></HEAD><BODY><P>Hello Phil</P><P>Your project sounds very interesting. Regrettably the CGA grammar definition can not be published to external users.</P><P>Of course you can use the CGA reference to derive your own version.</P></BODY></HTML> Tue, 22 Mar 2016 13:07:09 GMT ThomasFuchs 2016-03-22T13:07:09Z Formal Grammar definition for CGA? https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680977#M8964 <HTML><HEAD></HEAD><BODY><P>I'm working on a machine learning project, to evolve building designs based on some user-defined success criteria. I'd like to persist intermediate results as a CGA ruleset, then use those as inputs to subsequent generations. Is there some formal, BNF-Like (or Yacc, or ANTLR, or whatever) definition for CGA grammar, other than the very helpful (but not very formal) <A href="http://esri.github.io/esri-cityengine-sdk/html/cgaref/cgareference/cgaindex.html" title="http://esri.github.io/esri-cityengine-sdk/html/cgaref/cgareference/cgaindex.html">CGA Reference Index</A> ? </P></BODY></HTML> Mon, 21 Mar 2016 19:49:58 GMT https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680977#M8964 PhilDesrosiers 2016-03-21T19:49:58Z Re: Formal Grammar definition for CGA? https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680978#M8965 <HTML><HEAD></HEAD><BODY><P>Hello Phil</P><P>Your project sounds very interesting. Regrettably the CGA grammar definition can not be published to external users.</P><P>Of course you can use the CGA reference to derive your own version.</P></BODY></HTML> Tue, 22 Mar 2016 13:07:09 GMT https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680978#M8965 ThomasFuchs 2016-03-22T13:07:09Z Re: Formal Grammar definition for CGA? https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680979#M8966 <HTML><HEAD></HEAD><BODY><P>Okay thanks Thomas.</P></BODY></HTML> Tue, 22 Mar 2016 23:18:07 GMT https://community.esri.com/t5/arcgis-cityengine-questions/formal-grammar-definition-for-cga/m-p/680979#M8966 PhilDesrosiers 2016-03-22T23:18:07Z