| addE | Add an edge or a list of edges to the data frame for edges. |
| addV | Add a vertex to the data frame for vertices. |
| booleanGrammar | A constant function which returns the BNF (Backus-Naur Form)... |
| chooseNode | Randomly selects an attributed node in an attributed node... |
| chooseRule | Selects a production rule index at random from a vector of... |
| chooseRulek | Selects k-th production rule index from a vector of... |
| compatibleSubtrees | Test the compatibility of subtrees. |
| compileBNF | Compile a BNF (Backus-Naur Form) of a context-free grammar. |
| decodeAndFixDT | Decodes (and completes) a derivation tree into a working... |
| decodeCDT | Converts a complete derivation tree into a program. |
| decodeDT | Decodes a derivation tree into a program. |
| decodeDTsym | Decodes a derivation tree into a list of the leaf symbols of... |
| decodeSymVec | Decodes a vector of symbols. |
| decodeTree | Returns a list of all symbols of a derivation tree in... |
| filterANL | Filter an Attributed Node List (ANL) of a derivation tree by... |
| filterANLid | Filter an Attributed Node List (ANL) of a derivation tree by... |
| generateCDT | Generates a complete derivation tree from an integer vector. |
| generateDerivationTree | Generates a derivation tree from an integer vector. |
| leavesIncompleteDT | Returns the list of symbol identifiers of the leaves of a... |
| newE | Returns empty data frame for edges. |
| newV | Returns empty data frame for vertices. |
| printDerivations | Print derivations. |
| randomDerivationTree | Generates a random derivation tree. |
| rndPartition | Randomly partitions n in k parts. |
| rndsub | Transforms a non-terminal symbol into a random 1-level... |
| rndsubk | Transforms a non-terminal symbol into a 1-level derivation... |
| substituteSymbol | Codes the substitution of a non-terminal symbol by the... |
| testGenerateDerivationTree | Generate, decode, and show 'times' derivation trees from... |
| treeANL | Builds an Attributed Node List (ANL) of a derivation tree. |
| treeChildren | Returns the children of a derivation tree. |
| treeExtract | Extracts the subtree at position 'pos' in a derivation tree. |
| treeInsert | Inserts a subtree into a derivation tree at a 'node'. |
| treeLeaves | Measures the number of leaves of a complete derivation tree. |
| treeListDepth | Measures the depth of a (nested) list. |
| treeNodes | Measures the number of inner nodes in a derivation tree. |
| treeProbability | The (path) probability of generating 'tree' by grammar 'G'. |
| treeRoot | Returns the root of a derivation tree. |
| treeSize | Measures the number of symbols in a derivation tree. |
| treeToDataFrames | Convert a tree to two dataframes. |
| xegaDerivationTrees | Package xegaDerivationTrees |
