Kickapoo and English/Structural transfer
From LING073
Contents
Pre-evaluation
Command used:
apertium-eval-translator-line -r /home/kpeng1/ling073/ling073-kic-eng-corpus/eng.tests.txt -t /home/kpeng1/ling073/ling073-kic-eng/kic-eng.tests.txt
Results
| Metric | Value |
|---|---|
| Number of words in reference | 41 |
| Number of words in test | 25 |
| Number of unknown words in test | 11 |
| Coverage | 56.00% |
| Word Error Rate (WER) | 100.00% |
| Position-independent Error Rate (PER) | 100.00% |
After lexical additions
| Metric | Value |
|---|---|
| Number of words in reference | 41 |
| Number of words in test | 27 |
| Number of unknown words in test | 0 |
| Coverage | 100.00% |
| Word Error Rate (WER) | 97.56% |
| Position-independent Error Rate (PER) | 97.56% |
After adding structural transfer rule
| Metric | Value |
|---|---|
| Number of words in reference | 41 |
| Number of words in test | 33 |
| Number of unknown words in test | 0 |
| Coverage | 100.00% |
| Word Error Rate (WER) | 87.80% |
| Position-independent Error Rate (PER) | 87.80% |
Implemented Structural Transfer item
We implemented a structural transfer rule for the Kickapoo conjunct pattern illustrated by the sentence:
manahi enoweechi
The corresponding English translation is:
This is what he said.
In this pattern, the Kickapoo source structure is more compact than the English target structure. The transfer rule expands the source into a fuller English clause by introducing additional overt material, including is, what, and he, and by setting the verb to past tense.
Example outputs
Source sentence:
manahi enoweechi
Tagger output:
^manahi<prn><dem><sg>$ ^nowee<v><iv><aor_1><aa><cnj><s_3sg>$^.<sent>$
Lex output:
^manahi<prn><dem><sg>/this<det><sg>$ ^nowee<v><iv><aor_1><aa><cnj><s_3sg>/say<vblex><aor_1><aa><cnj><s_3sg>$^.<sent>/.<sent>$
Transfer output:
^this<det><sg>$ ^be<vblex><pres><p3><sg>$ ^what<prn>$ ^he<prn><p3><sg>$ ^say<vblex><past>$^.<sent>$
Final translation:
this is what he said
