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/home/cluster1/data/bu01/1121861/html/toolset/Handout Overview of NLE toolset.doc
ࡱ > ^ ` ] !` O1 bjbj\\ ;L > > )) % 8 > D $ 6 " 6 6 6 6 6 6 6 $ T7 h 9 C6 C6 X6 6 6 1 4 @?1 E3 6 n6 0 6 ]3 \ ^: ^: 0 4 4 ^: 4 P 0 " & B C6 C6 X 6 $ Nahuatl Learning Environment Toolset for Language Processing and Presentation (developed or in development with funding from Department of Education and National Science Foundation) (prepared for Interagency Language Roundtable, Arlington, Virginia, 23 June 2006) for more information, please contact jonathan.amith@yale.edu JLex Tool Set: Creates an online searchable lexicon with a customized search engine; permits data cleansing to ensure that all intralexicon links are valid Converts lexical databases in XML developed by field linguists and lexicographers to a relational MySQL database Interprets the schema from the XML file and uses this to create the various MySQL tables Automatically elaborates a modifiable search engine based on the lexical database structure Converts search results to XML, which can then be easily transformed (through XSLT) to HTML or other presentation formats Plug-ins Permits user to reorder the fields of an XML database (either manually or by schema) Permits user to ensure that all embedded links are operational Permits user to search by XPath for any given child nodes My Dictionary: From a large documentation lexicon, allows students to create personalized learners dictionaries for individually paced learning; content of My Dictionary can be plugged into Books on Demand. As students advance they select from a lexicon with a high number of entries (e.g, 10,000+) those words they wish to compile into their My Dictionary learners set Teachers may add what they feel is a basic lexicon (e.g., a weekly word list, or lemmas based on a frequency count) to any students or group of students My Dictionary learners set Particularly useful in that it accommodates variation of student learning speed and aptitude within a single classroom Content of a My Dictionary learners set can be used to help create reading material that is glossed in accord with a students level (e.g., a given text can be processed so that all new words are glossed but those words that a student should knowi.e., those words contained in his or her My Dictionary setare not glossed) Conversely, as students read a text and electronically look up words (see below) they can elect to store these looked-up words in their My Dictionary learners set. Or, a default could be set so that words looked up by a student more than twice would be automatically added to his/her My Dictionary learners set. Morphological Text Annotation Tool (being developed at the Linguistic Data Consortium): Allows for the annotation of texts using a language specific morphological analyzer. Texts so processed may then be used in reading assessment tests and plugged inot the Books on Demand module (see below) A language-specific lexicon and morphological transducer (for Nahuatl, Mike Maxwell, CASL, is constructing this with the Xerox Finite State Toolkit) is created for the language to be processed An annotation tool processes texts with the goal of creating a three-line interlinear presentation surface forms parse (underlying forms) gloss (bound morphemes and stems) An expert in the language corrects any errors or ambiguities in the machine-produced analysis tagging the correct parse if more than one is offered for any given word if the correct parse is not generated, the expert inserts the correct parse and tag the type of error of words that were not parsed (or parsed incorrectly). There are three basic ways of tagging incorrect parses: As misspelled in text. If this is the only problem then the orthography is remedied As the result of a deficient transducer. If the spelling is correct and the stem is in the dictionary the absence of a correct parse is assigned to parser error/deficiency. The word is tagged to provide material for the enhancement/correction of the transducer (morphological analysis) As the result of a deficient lexicon. If the word is correct and no apparent errors in morphological analysis can be determined it is likely that the word is absence from the lexicon. The stem is then tagged and the lexicon is enhanced with the new lemma (facilitating lexical enrichment from an extensive corpus) Processed text can be placed online to be read by students assisted by the Books on Demand tool Plug-ins A result of morphological annotation is the creation of a series of tables that can be used to produce concordances for learning of lexicon in context Frequency count of lemmas in analyzed corpus can orient language learning strategies (e.g., obligatory content of My Dictionary for each proficiency level) Lexicon enrichment: morphological analysis of corpus can reveal those lemmas that not in lexicon and tag them for inclusion Grammar correction: an executable morphological grammar (one that operationalizes a written grammar) when applied against a corpus will reveal errors in analysis that would not be apparent without such electronic testing. Difficulty assessment: It might be possible eventually for texts to be ranked according to lexical difficulty by looking at the relative occurrence in a given text of high-, medium-, and low-frequency items. Spell corrector for student writing: Students write short texts and run these through the Morphological Text Annotator Tool to ensure that they have properly written (from an orthographic and morphological perspective) their text Books on Demand: A reading enhancement tool that takes an electronic text that has been processed by a morphological transducer (see Morphological Text Annotator Tool, above) and allows a student to click on any word to see its parse and gloss and, if needed, to automatically look up the word. If desired, a personalized glossary of looked-up words can be produce An electronic text from the corpus is processed (annotated) with the Morphological Text Annotation Tool (see above) that creates a parse and gloss for each word The resultant text is placed online though only the surface forms (transcription) is visible As students read the text they can click on any word to see its parse and gloss If additional help is needed, students can request an automatic look-up of the word in the dictionary Publication module: As words are clicked for look-up, they are marked with progressive superscript numbers. The look-up results (e.g., word and definition) are stored on the server. When reader is done, he or she finalizes and a pdf file of the text is produced, with a numbered glossary that corresponds to the looked-up words. Lexical learning module: Looked-up words are stored in the My Dictionary set of the student reader, enhancing vocabulary study on the basis of reading Reading assessment module: For intermediate to advanced readers with a My Dictionary set all words not in his or her set are automatically glossed or defined for a given text. The student would be given the hard copy of the glossarized text expected to understand the reading without further look-up. Verb Paradigm Generator: Produces the most unmarked verb inflectional paradigm from headword entries and allows students to produce surface forms from a string of glosses A morphological transducer such as the Xerox Finite State Toolkit used here relates surface to underlying forms allowing both parsing and generating. The Verb Paradigm Generator linked to headword entries takes the part of speech category (e.g., intransitive verb, transitive verb, etc.) and produces the most unmarked inflectional forms for each tense, aspect, and mood set An additional graph interface allows students to enter in glosses and a stem to produce surface forms individually Linguistic Cross-Training Tool: Meant to solve a key problem of language learning: variation among dialects or, viewed from another angle, how to allow learners familiar with variant X to apply this knowledge to read, understand, or speak variant Y. This tool requires a properly organized multivariant lexicon and, preferably, a morphological transducer capable of working with variant morphology and phonology within a language. Users can log on to the dictionary and identify the dialect they are familiar with (variant X of a given language) and then produce a lexicon of words (and senses) that are different in another closely related variant, ignoring words that are equivalent in form and meaning (imagine a Portuguese speaker from Portugal producing a dictionary of all lexemes unique to Brazil or for given words, senses that vary from one variant to another). Useful if language workers need to work across variants or in areas with little standardization. With processed (morphologically analyzed) texts, potentially could produce Books on Demand for readers familiar with different variants. That is, if Text A form Variant X can be annotated differently depending upon the variant that the reader is most familiar with. The Linguistic Cross-Training Tool will isolate all those words in the text that a reader of a given variant might find difficult provided that the lexicon includes information on the variants in play. Webscriber: Creates HTML page with line-by-line playback and transcription and language tests for students Takes time-coded transcriptions (produced by Transcriber) and generates a Web page with line-by-line playback of an mp3 file; Web page may be online or bundled and downloaded (in which case the mp3 file is segmented) Allows teacher to set-up display so that transcriptions are hidden from students; students play the segment and transcribe what they hear. They must submit their transcription (which is stored on a server for teacher review) to see the correct written form and proceed to the next line Allows (see below) for students to parse and gloss each line of transcription If teachers have a transcription and a recording but no time-coded version, allows them to merge a text file (*.txt) with a contentless time-code to produce a file that can them be processed as per steps 13 Dictionary Prompter and Log Generator for Headword Recording: This tool pulls up words from a lexical database and creates a prompt screen for the native speaker. A log of the recording session is created and this log is used in assigning file names to the segmented sound files. (Present version runs on Windows with TCL). An interface allows segmented files to be named and these can be linked to the headwords of the online dictionary. 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