Example #1
0
    def test_add_pos_tags(self):
        add_pos_tags(self.igt, 'gw', self.tags)

        self.assertEquals(tier_tokens(pos_tag_tier(self.igt, 'gw')), self.tags)
Example #2
0
def convert_pml(aln_path, out_path, hindi=True):

    if hindi:
        igt_data = retrieve_hindi()
    else:
        igt_data = retrieve_naacl()

    a_root = load_xml(aln_path)
    doc_a  = a_root.find(".//reffile[@name='document_a']").get('href')
    doc_b  = a_root.find(".//reffile[@name='document_b']").get('href')



    doc_a = os.path.join(os.path.join(os.path.dirname(aln_path), doc_a))
    doc_b  = os.path.join(os.path.join(os.path.dirname(aln_path), doc_b))

    # Load the sentences for each document.
    a_sents, a_glossed = load_sents(doc_a)
    b_sents, b_glossed = load_sents(doc_b)



    sent_alignments = a_root.findall(".//body/LM")

    assert (a_glossed and not b_glossed) or (b_glossed and not a_glossed), "Only one file should have glosses"

    xc = XigtCorpus()

    for sent_alignment in sent_alignments:

        # Get the sentence id...
        aln_id = sent_alignment.attrib.get('id')
        a_snt_id = re.search('^.+?-(.*)$', aln_id).group(1)
        if a_snt_id not in igt_data:
            continue

        # Get the text and tokens from the naacl data.
        pre_txt, lang_txt, gloss_txt, trans_txt = igt_data[a_snt_id]
        lang_tokens = lang_txt.split()
        gloss_tokens = gloss_txt.split()
        trans_tokens = trans_txt.split()

        a_snt_ref = sent_alignment.find('./tree_a.rf').text.split('#')[1]
        b_snt_ref = sent_alignment.find('./tree_b.rf').text.split('#')[1]

        word_alignments = sent_alignment.findall('./node_alignments/LM')

        a_snt, a_edges = a_sents[a_snt_ref]
        b_snt, b_edges = b_sents[b_snt_ref]

        assert isinstance(a_snt, Sentence)
        assert isinstance(b_snt, Sentence)
        # -------------------------------------------
        # Skip sentences if they are not found for whatever reason
        # -------------------------------------------
        if not a_snt or not b_snt:
            continue

        # -------------------------------------------
        # Start constructing the IGT Instance.
        # -------------------------------------------

        trans_snt, trans_indices = a_snt, a_edges
        gloss_snt, gloss_indices = b_snt, b_edges
        if a_glossed:
            trans_snt, trans_indices = b_snt, b_edges
            gloss_snt, gloss_indices = a_snt, a_edges

        # Hindi stuff...
        if hindi:
            lang_tokens = [w.text for w in gloss_snt]
            lang_postags   = [w.pos  for w in gloss_snt]
            lang_txt    = ' '.join(lang_tokens)

            trans_tokens = [w.text for w in trans_snt]
            trans_postags   = [w.pos  for w in trans_snt]
            trans_txt    = ' '.join(trans_tokens)

            gloss_tokens  = [w.gloss if w.gloss else 'NULL' for w in gloss_snt]
            gloss_postags = lang_postags
            gloss_txt     = ' '.join(gloss_tokens)



        inst = Igt(id=re.sub('s-', 'igt', a_snt_ref))
        nt   = Tier(type=ODIN_TIER_TYPE, id=NORM_ID, attributes={STATE_ATTRIBUTE:NORM_STATE})
        ll   = Item(id='n1', attributes={ODIN_TAG_ATTRIBUTE:ODIN_LANG_TAG}, text=lang_txt)
        gl   = Item(id='n2', attributes={ODIN_TAG_ATTRIBUTE:ODIN_GLOSS_TAG}, text=gloss_txt)
        tl   = Item(id='n3', attributes={ODIN_TAG_ATTRIBUTE:ODIN_TRANS_TAG}, text=trans_txt)
        nt.extend([ll,gl,tl])
        inst.append(nt)


        # -------------------------------------------
        # Handle the phrase tiers
        # -------------------------------------------
        generate_lang_phrase_tier(inst)
        generate_trans_phrase_tier(inst)

        def process_postags(sent, tokens):
            postags = []
            for i, token in enumerate(tokens):
                word = sent.getorder(i+1)
                if word is None:
                    postags.append(None)
                else:
                    postags.append(word.pos)
            return postags

        # -------------------------------------------
        # Now, handle the translation words.
        # -------------------------------------------
        tt = create_word_tier(ODIN_TRANS_TAG, trans_tokens, trans_phrase(inst)[0])
        inst.append(tt)

        if not hindi:
            trans_postags = process_postags(trans_snt, trans_tokens)

        add_pos_tags(inst, tt.id, trans_postags, tag_method=INTENT_POS_MANUAL)


        # -------------------------------------------
        # Handle the words tiers...
        # -------------------------------------------
        wt = create_word_tier(ODIN_LANG_TAG, lang_tokens, lang_phrase(inst)[0])
        gwt= create_word_tier(ODIN_GLOSS_TAG, gloss_tokens, gl)
        inst.extend([wt, gwt])
        # Quickly set the alignment for the gloss words.
        for w, gw in zip(wt, gwt):
            gw.alignment = w.id


        if not hindi:
            lang_postags = process_postags(gloss_snt, gloss_tokens)
            gloss_postags = lang_postags

        add_pos_tags(inst, wt.id, lang_postags, tag_method=INTENT_POS_MANUAL)
        add_pos_tags(inst, gwt.id, gloss_postags, tag_method=INTENT_POS_MANUAL)

        create_dt_tier(inst, assemble_ds(gloss_snt, gloss_indices), wt, INTENT_DS_MANUAL)
        create_dt_tier(inst, assemble_ds(trans_snt, trans_indices), tt, INTENT_DS_MANUAL)



        # -------------------------------------------
        # Now, the word alignments.
        # -------------------------------------------
        a = Alignment()
        for word_alignment in word_alignments:
            a_ref = word_alignment.find('./a.rf').text.split('#')[1]
            b_ref = word_alignment.find('./b.rf').text.split('#')[1]

            a_word = a_snt.getid(a_ref)
            b_word = b_snt.getid(b_ref)

            if a_word is None or b_word is None:
                continue

            if not hindi:
                a_idx  = a_word.order
                b_idx  = b_word.order
            else:
                a_idx  = a_snt.index(a_word)+1
                b_idx  = b_snt.index(b_word)+1

            # Make sure the gloss is in the
            if a_glossed:
                trans_idx = b_idx
                lang_idx  = a_idx
            else:
                trans_idx = a_idx
                lang_idx  = b_idx

            a.add((trans_idx, lang_idx))


        set_bilingual_alignment(inst, trans(inst), lang(inst), a, INTENT_ALN_MANUAL)
        set_bilingual_alignment(inst, trans(inst), gloss(inst), a, INTENT_ALN_MANUAL)

        xc.append(inst)

    with open(out_path, 'w', encoding='utf-8') as f:
        xigtxml.dump(f, xc)