Spring 2019/Structural transfer - Revision history

Jwashin1: /* Wrapping up */

2021-04-17T22:37:56Z

‎Wrapping up

2021-04-17T22:31:09Z

2019-04-09T13:43:41Z

‎Examples of implemented Apertium transfer systems

2019-04-09T13:43:06Z

‎Examples of implemented Apertium transfer systems

2019-04-09T13:39:08Z

‎WER and PER

2019-04-09T04:16:25Z

‎The assignment

2019-03-21T03:06:43Z

‎The assignment: some updates (still not done)

2019-03-19T20:23:39Z

‎The assignment

2018-04-12T15:57:49Z

‎The assignment

2018-04-12T15:57:37Z

‎The assignment

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 Plenty of examples are available:
 * [https://github.com/jonorthwash/apertium-kir-eng eng-kir] transfer that covers the example above and basically nothing else.
 * [https://github.swarthmore.edu/Ling073-sp19/ling073-eng-spa eng-spa (in-class)]: a basic example from class showing how to transfer adjective+noun from English to Spanish ("big houses → casas largas": number and gender agreement and reordering) using chunking (chunker+interchunk).
 * [https://github.com/apertium/apertium-eng-spa eng-spa (apertium)]: a mature translation pair with well developed structural transfer for English-Spanish and Spanish-English translation.
 ==== Writing rules ====

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 Plenty of examples are available:
 * [https://github.com/jonorthwash/apertium-kir-eng eng-kir] transfer that covers the example above and basically nothing else.
 * And lots in between.
-* [https://github.swarthmore.edu/Ling073-sp17/ling073-eng-spa eng-spa]: a basic example from class showing how to transfer adjective+noun from English to Spanish ("large cats → gatos largos": number and gender agreement and reordering) using chunking (chunker+interchunk).
+* [https://github.swarthmore.edu/Ling073-sp19/ling073-eng-spa eng-spa (in-class)]: a basic example from class showing how to transfer adjective+noun from English to Spanish ("big houses → casas largas": number and gender agreement and reordering) using chunking (chunker+interchunk).
 ==== Writing rules ====

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 '''WER''' or '''[[:wikipedia:word error rate|word error rate]]''' is a measure of how different two texts are.  You will want to know how different the translation your translation pair performs (the "test translation") is from the known good translation of phrases in your parallel corpus (the "reference translation").
-'''PER''' ('''position-independent error rate''') is the same measurement, just not sensitive to position in a phrase.  I.e., a correct translation of every word but in an entirely wrong word order will give you low WER but high PER.
+'''PER''' ('''position-independent error rate''') is the same measurement, just not sensitive to position in a phrase.  I.e., a correct translation of every word but in an entirely wrong word order will give you high (bad) WER but low (good) PER.
 To test WER and PER:
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 # The following command should then give you WER and PER measures and some other useful numbers:
 #* <code>apertium-eval-translator -r abc.tests.txt -t xyz-abc.tests.txt</code>
 == The assignment ==

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 == The assignment ==
-This assignment is due at the end of week 12 (this semester, '''noon on Friday, April 7, 2017''').
+This assignment is early in week 13 (this semester, '''noon on Wednesday, April 17, 2019''').
 === Getting set up ===

← Older revision	Revision as of 22:31, 17 April 2021
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 == The assignment ==
 This assignment is due at the end of week 12 (this semester, '''noon on Friday, April 7, 2017''').
 # Add a page to the wiki called <code>Language1_and_Language2/Structural_transfer</code>, linking to it from the main page on the language pair.
-#* Put the page in the category [[:Category:Sp17_StructuralTransfer]].
+#* Put the page in the category [[:Category:Sp19_StructuralTransfer]] and the categories for the two languages.
-#* Perform WER, PER, and coverage tests on your short sentences corpus, and add this in to a pre-evaluation section.
+#* Perform WER, PER, and coverage tests on your short sentences corpus, and add this in to a <code>pre-evaluation</code> section.
 # Implement at least one item from your contrastive grammar.
 #* Each person in each group should implement at least one item for the direction that translates into the language that they have been primarily working with.  The same item does not need to be used for each direction.
 #* If the contrastive grammar item only involves relabelling or reordering tags within the same form, then please do at least two items.
 # Add to your structural transfer wiki page:
 #* Add at least one example sentence for each item you implement.  Show the outputs of the following modes for your translation system: tagger, biltrans, chunker, interchunk, postchunk, and the pair itself (abc-xyz).

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 * [[:apertium:A long introduction to transfer rules|A long introduction to transfer rules]]
 * [http://xixona.dlsi.ua.es/~fran/apertium2-documentation.pdf Full apertium documentation] (section 3.5 covers the transfer module)
 == The assignment ==