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"[[0, 6, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], []]]\n"
]
}
],
"source": [
"print(chart.parses('the stench is in 2 2'))"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"You can see which edges get added by setting the optional initialization argument `trace` to true."
]
},
{
"cell_type": "code",
"execution_count": 4,
"metadata": {
"collapsed": true
},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"Chart: added [0, 0, 'S_', [], ['S']]\n",
"Chart: added [0, 0, 'S', [], ['NP', 'VP']]\n",
"Chart: added [0, 0, 'NP', [], ['Pronoun']]\n",
"Chart: added [0, 0, 'NP', [], ['Name']]\n",
"Chart: added [0, 0, 'NP', [], ['Noun']]\n",
"Chart: added [0, 0, 'NP', [], ['Article', 'Noun']]\n",
"Chart: added [0, 0, 'NP', [], ['Digit', 'Digit']]\n",
"Chart: added [0, 0, 'NP', [], ['NP', 'PP']]\n",
"Chart: added [0, 0, 'NP', [], ['NP', 'RelClause']]\n",
"Chart: added [0, 0, 'S', [], ['S', 'Conjunction', 'S']]\n",
"Chart: added [0, 1, 'NP', [('Article', 'the')], ['Noun']]\n",
"Chart: added [0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []]\n",
"Chart: added [0, 2, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []]], ['VP']]\n",
"Chart: added [2, 2, 'VP', [], ['Verb']]\n",
"Chart: added [2, 2, 'VP', [], ['VP', 'NP']]\n",
"Chart: added [2, 2, 'VP', [], ['VP', 'Adjective']]\n",
"Chart: added [2, 2, 'VP', [], ['VP', 'PP']]\n",
"Chart: added [2, 2, 'VP', [], ['VP', 'Adverb']]\n",
"Chart: added [0, 2, 'NP', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []]], ['PP']]\n",
"Chart: added [2, 2, 'PP', [], ['Preposition', 'NP']]\n",
"Chart: added [0, 2, 'NP', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []]], ['RelClause']]\n",
"Chart: added [2, 2, 'RelClause', [], ['That', 'VP']]\n",
"Chart: added [2, 3, 'VP', [('Verb', 'is')], []]\n",
"Chart: added [0, 3, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 3, 'VP', [('Verb', 'is')], []]], []]\n",
"Chart: added [0, 3, 'S_', [[0, 3, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 3, 'VP', [('Verb', 'is')], []]], []]], []]\n",
"Chart: added [0, 3, 'S', [[0, 3, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 3, 'VP', [('Verb', 'is')], []]], []]], ['Conjunction', 'S']]\n",
"Chart: added [2, 3, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []]], ['NP']]\n",
"Chart: added [3, 3, 'NP', [], ['Pronoun']]\n",
"Chart: added [3, 3, 'NP', [], ['Name']]\n",
"Chart: added [3, 3, 'NP', [], ['Noun']]\n",
"Chart: added [3, 3, 'NP', [], ['Article', 'Noun']]\n",
"Chart: added [3, 3, 'NP', [], ['Digit', 'Digit']]\n",
"Chart: added [3, 3, 'NP', [], ['NP', 'PP']]\n",
"Chart: added [3, 3, 'NP', [], ['NP', 'RelClause']]\n",
"Chart: added [2, 3, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []]], ['Adjective']]\n",
"Chart: added [2, 3, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []]], ['PP']]\n",
"Chart: added [3, 3, 'PP', [], ['Preposition', 'NP']]\n",
"Chart: added [2, 3, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []]], ['Adverb']]\n",
"Chart: added [3, 4, 'PP', [('Preposition', 'in')], ['NP']]\n",
"Chart: added [4, 4, 'NP', [], ['Pronoun']]\n",
"Chart: added [4, 4, 'NP', [], ['Name']]\n",
"Chart: added [4, 4, 'NP', [], ['Noun']]\n",
"Chart: added [4, 4, 'NP', [], ['Article', 'Noun']]\n",
"Chart: added [4, 4, 'NP', [], ['Digit', 'Digit']]\n",
"Chart: added [4, 4, 'NP', [], ['NP', 'PP']]\n",
"Chart: added [4, 4, 'NP', [], ['NP', 'RelClause']]\n",
"Chart: added [4, 5, 'NP', [('Digit', '2')], ['Digit']]\n",
"Chart: added [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]\n",
"Chart: added [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]\n",
"Chart: added [2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]\n",
"Chart: added [0, 6, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], []]\n",
"Chart: added [0, 6, 'S_', [[0, 6, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], []]], []]\n",
"Chart: added [0, 6, 'S', [[0, 6, 'S', [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []], [2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], []]], ['Conjunction', 'S']]\n",
"Chart: added [2, 6, 'VP', [[2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], ['NP']]\n",
"Chart: added [6, 6, 'NP', [], ['Pronoun']]\n",
"Chart: added [6, 6, 'NP', [], ['Name']]\n",
"Chart: added [6, 6, 'NP', [], ['Noun']]\n",
"Chart: added [6, 6, 'NP', [], ['Article', 'Noun']]\n",
"Chart: added [6, 6, 'NP', [], ['Digit', 'Digit']]\n",
"Chart: added [6, 6, 'NP', [], ['NP', 'PP']]\n",
"Chart: added [6, 6, 'NP', [], ['NP', 'RelClause']]\n",
"Chart: added [2, 6, 'VP', [[2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], ['Adjective']]\n",
"Chart: added [2, 6, 'VP', [[2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], ['PP']]\n",
"Chart: added [6, 6, 'PP', [], ['Preposition', 'NP']]\n",
"Chart: added [2, 6, 'VP', [[2, 6, 'VP', [[2, 3, 'VP', [('Verb', 'is')], []], [3, 6, 'PP', [('Preposition', 'in'), [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], []]], []]], ['Adverb']]\n",
"Chart: added [4, 6, 'NP', [[4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], ['PP']]\n",
"Chart: added [4, 6, 'NP', [[4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]], ['RelClause']]\n",
"Chart: added [6, 6, 'RelClause', [], ['That', 'VP']]\n"
]
},
{
"data": {
"text/plain": [
"[[0,\n",
" 6,\n",
" 'S',\n",
" [[0, 2, 'NP', [('Article', 'the'), ('Noun', 'stench')], []],\n",
" [2,\n",
" 6,\n",
" 'VP',\n",
" [[2, 3, 'VP', [('Verb', 'is')], []],\n",
" [3,\n",
" 6,\n",
" 'PP',\n",
" [('Preposition', 'in'),\n",
" [4, 6, 'NP', [('Digit', '2'), ('Digit', '2')], []]],\n",
" []]],\n",
" []]],\n",
" []]]"
]
},
"execution_count": 4,
"metadata": {},
"output_type": "execute_result"
}
],
"source": [
"chart_trace = Chart(nlp.E0, trace=True)\n",
"chart_trace.parses('the stench is in 2 2')"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"Let's try and parse a sentence that is not recognized by the grammar:"
]
},
{
"cell_type": "code",
"execution_count": 5,
"metadata": {},
"outputs": [
{
"name": "stdout",
"output_type": "stream",
"text": [
"[]\n"
]
}
],
"source": [
"print(chart.parses('the stench 2 2'))"
]
},
{
"cell_type": "markdown",
"metadata": {},
"source": [
"An empty list was returned."
]
}
],
"metadata": {
"kernelspec": {
"display_name": "Python 3",
"language": "python",
"name": "python3"
},
"language_info": {
"codemirror_mode": {
"name": "ipython",
"version": 3
},
"file_extension": ".py",
"mimetype": "text/x-python",
"name": "python",
"nbconvert_exporter": "python",
"pygments_lexer": "ipython3",
}
},
"nbformat": 4,