Exemple #1
0
def demo():
    from nltk import Nonterminal, ContextFreeGrammar
    nonterminals = 'S VP NP PP P N Name V Det'
    (S, VP, NP, PP, P, N, Name, V, Det) = [Nonterminal(s)
                                           for s in nonterminals.split()]

    grammar = ContextFreeGrammar.fromstring("""
    S -> NP VP
    PP -> P NP
    NP -> Det N
    NP -> NP PP
    VP -> V NP
    VP -> VP PP
    Det -> 'a'
    Det -> 'the'
    Det -> 'my'
    NP -> 'I'
    N -> 'dog'
    N -> 'man'
    N -> 'park'
    N -> 'statue'
    V -> 'saw'
    P -> 'in'
    P -> 'up'
    P -> 'over'
    P -> 'with'
    """)

    def cb(grammar): print(grammar)
    top = Tk()
    editor = CFGEditor(top, grammar, cb)
    Label(top, text='\nTesting CFG Editor\n').pack()
    Button(top, text='Quit', command=top.destroy).pack()
    top.mainloop()
Exemple #2
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def demo2():
    from nltk import Nonterminal, Production, ContextFreeGrammar
    nonterminals = 'S VP NP PP P N Name V Det'
    (S, VP, NP, PP, P, N, Name, V, Det) = [Nonterminal(s)
                                           for s in nonterminals.split()]
    productions = (
        # Syntactic Productions
        Production(S, [NP, VP]),
        Production(NP, [Det, N]),
        Production(NP, [NP, PP]),
        Production(VP, [VP, PP]),
        Production(VP, [V, NP, PP]),
        Production(VP, [V, NP]),
        Production(PP, [P, NP]),
        Production(PP, []),

        Production(PP, ['up', 'over', NP]),

        # Lexical Productions
        Production(NP, ['I']),   Production(Det, ['the']),
        Production(Det, ['a']),  Production(N, ['man']),
        Production(V, ['saw']),  Production(P, ['in']),
        Production(P, ['with']), Production(N, ['park']),
        Production(N, ['dog']),  Production(N, ['statue']),
        Production(Det, ['my']),
        )
    grammar = ContextFreeGrammar(S, productions)

    text = 'I saw a man in the park'.split()
    d=CFGDemo(grammar, text)
    d.mainloop()
Exemple #3
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def demo2():
    from nltk import Nonterminal, Production, CFG

    nonterminals = "S VP NP PP P N Name V Det"
    (S, VP, NP, PP, P, N, Name, V,
     Det) = [Nonterminal(s) for s in nonterminals.split()]
    productions = (
        # Syntactic Productions
        Production(S, [NP, VP]),
        Production(NP, [Det, N]),
        Production(NP, [NP, PP]),
        Production(VP, [VP, PP]),
        Production(VP, [V, NP, PP]),
        Production(VP, [V, NP]),
        Production(PP, [P, NP]),
        Production(PP, []),
        Production(PP, ["up", "over", NP]),
        # Lexical Productions
        Production(NP, ["I"]),
        Production(Det, ["the"]),
        Production(Det, ["a"]),
        Production(N, ["man"]),
        Production(V, ["saw"]),
        Production(P, ["in"]),
        Production(P, ["with"]),
        Production(N, ["park"]),
        Production(N, ["dog"]),
        Production(N, ["statue"]),
        Production(Det, ["my"]),
    )
    grammar = CFG(S, productions)

    text = "I saw a man in the park".split()
    d = CFGDemo(grammar, text)
    d.mainloop()
Exemple #4
0
def demo():
    from nltk import Nonterminal, CFG
    nonterminals = 'S VP NP PP P N Name V Det'
    (S, VP, NP, PP, P, N, Name, V, Det) = [Nonterminal(s)
                                           for s in nonterminals.split()]

    grammar = CFG.fromstring("""
    S -> NP VP
    PP -> P NP
    NP -> Det N
    NP -> NP PP
    VP -> V NP
    VP -> VP PP
    Det -> 'a'
    Det -> 'the'
    Det -> 'my'
    NP -> 'I'
    N -> 'dog'
    N -> 'man'
    N -> 'park'
    N -> 'statue'
    V -> 'saw'
    P -> 'in'
    P -> 'up'
    P -> 'over'
    P -> 'with'
    """)

    def cb(grammar): print(grammar)
    top = Tk()
    editor = CFGEditor(top, grammar, cb)
    Label(top, text='\nTesting CFG Editor\n').pack()
    Button(top, text='Quit', command=top.destroy).pack()
    top.mainloop()
Exemple #5
0
def demo2():
    from nltk import Nonterminal, Production, CFG
    nonterminals = 'S VP NP PP P N Name V Det'
    (S, VP, NP, PP, P, N, Name, V, Det) = [Nonterminal(s)
                                           for s in nonterminals.split()]
    productions = (
        # Syntactic Productions
        Production(S, [NP, VP]),
        Production(NP, [Det, N]),
        Production(NP, [NP, PP]),
        Production(VP, [VP, PP]),
        Production(VP, [V, NP, PP]),
        Production(VP, [V, NP]),
        Production(PP, [P, NP]),
        Production(PP, []),

        Production(PP, ['up', 'over', NP]),

        # Lexical Productions
        Production(NP, ['I']),   Production(Det, ['the']),
        Production(Det, ['a']),  Production(N, ['man']),
        Production(V, ['saw']),  Production(P, ['in']),
        Production(P, ['with']), Production(N, ['park']),
        Production(N, ['dog']),  Production(N, ['statue']),
        Production(Det, ['my']),
        )
    grammar = CFG(S, productions)

    text = 'I saw a man in the park'.split()
    d=CFGDemo(grammar, text)
    d.mainloop()
Exemple #6
0
def demo2():
    from nltk import Nonterminal, Production, ContextFreeGrammar

    nonterminals = "S VP NP PP P N Name V Det"
    (S, VP, NP, PP, P, N, Name, V, Det) = [Nonterminal(s) for s in nonterminals.split()]
    productions = (
        # Syntactic Productions
        Production(S, [NP, VP]),
        Production(NP, [Det, N]),
        Production(NP, [NP, PP]),
        Production(VP, [VP, PP]),
        Production(VP, [V, NP, PP]),
        Production(VP, [V, NP]),
        Production(PP, [P, NP]),
        Production(PP, []),
        Production(PP, ["up", "over", NP]),
        # Lexical Productions
        Production(NP, ["I"]),
        Production(Det, ["the"]),
        Production(Det, ["a"]),
        Production(N, ["man"]),
        Production(V, ["saw"]),
        Production(P, ["in"]),
        Production(P, ["with"]),
        Production(N, ["park"]),
        Production(N, ["dog"]),
        Production(N, ["statue"]),
        Production(Det, ["my"]),
    )
    grammar = ContextFreeGrammar(S, productions)

    text = "I saw a man in the park".split()
    d = CFGDemo(grammar, text)
    d.mainloop()