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ISCApad #147 |
| Sunday, September 12, 2010 by Chris Wellekens |
5-2-3 LDC News (August 2010)
In this newsletter: - Fall 2010 LDC Data Scholarship Program - New publications: LDC2010S05 LDC2010T14 LDC2010V02
Fall 2010 LDC Data Scholarship Program Applications are now being accepted through September 15, 2010 for the Fall 2010 LDC Data Scholarship program! The LDC Data Scholarship program provides university students with access to LDC data at no-cost. Data scholarships are offered twice a year to correspond to the Fall and Spring semesters, beginning with the Fall 2010 semester (September - December 2010). Several students can be awarded scholarships during each program cycle. This program is open to students pursuing both undergraduate and graduate studies in an accredited college or university. LDC Data Scholarships are not restricted to any particular field of study; however, students must demonstrate a well-developed research agenda and a bona fide inability to pay. (1) Data Use Proposal. Applicants must submit a proposal describing their intended use of the data. The proposal must contain the applicant's name, university, and field of study. The proposal should state which data the student plans to use and contain a description of their research project. Students are advised to consult the LDC Corpus Catalog for a complete list of data distributed by LDC. Due to certain restrictions, a handful of LDC corpora are restricted to members of the Consortium. (2) Letter of Support. Applicants must submit one letter of support from their thesis advisor or department chair. The letter must verify the student's need for data and confirm that the department or university lacks the funding to pay the full Non-member Fee for the data. For further information on application materials and program rules, please visit the LDC Data Scholarship page. Students can email their applications to the LDC Data Scholarship program. Decisions will be sent by email from the same address. The deadline for the Fall 2010 program cycle is September 15, 2010. Track the LDC Data Scholarship program at WikiCFP! [ top ] New Providing Guidelines LDC is pleased to announce that our Providing page has been recently updated and enhanced to reflect detailed guidelines for submitting corpora and other resources for publication by LDC. The new Providing page describes the entire process of sharing data through LDC from the initial publication inquiry to delivery of the data for publication. LDC's preferred submission formats for video, audio, and text data and directory structure, and best practices for file naming conventions are covered in depth. The page also includes information on providing adequate metadata and documentation of your data set. Why share your data through LDC? Resources distributed by LDC reach a global audience. All published resources appear in LDC’s online Catalog, which is accessed daily by users worldwide. LDC’s monthly newsletter keeps the community abreast of all new publications, and its reach ensures the attention of interested researchers. LDC members receive copies of the corpora as part of their membership benefits. LDC’s Membership structure therefore guarantees your data greater exposure to major organizations working in human language technologies and related fields. [ top ] New Publications (1) Asian Elephant Vocalizations consists of 57.5 hours of audio recordings of vocalizations by Asian Elephants (Elephas maximus) in the Uda Walawe National Park, Sri Lanka, of which 31.25 hours have been annotated. The collection and annotation of the recordings was conducted and overseen by Shermin de Silva, of the University of Pennsylvania Department of Biology; voice recording field notes are of Shermin de Silva and Ashoka Ranjeewa. The recordings primarily feature adult female and juvenile elephants. Existing knowledge of acoustic communication in elephants is based primarily on African species (Loxodonta africana and Loxodonta cyclotis). There has been comparatively less study of communication in Asian elephants. This corpus is intended to enable researchers in acoustic communication to evaluate acoustic features and repertoire diversity of the recorded population. Of particular interest is whether there may be regional dialects that differ among Asian elephant populations in the wild and in captivity. A second interest is in whether structural commonalities exist between this and other species that shed light on underlying social and ecological factors shaping communication systems. Data were collected from May, 2006 to December, 2007. Observations were performed by vehicle during park hours from 0600 to 1830 h. Most recordings of vocalizations were made using an Earthworks QTC50 microphone shock-mounted inside a Rycote Zeppelin windshield, via a Fostex FR-2 field recorder (24-bit sample size, sampling rate 48 kHz). Recordings were initiated at the start of a call with a 10-s pre-record buffer so that the entire call was captured and loss of rare vocalizations minimized. This was made possible with the 'pre-record' feature of the Fostex, which records continuously, but only saves the file with a 10-second lead once the 'record' button is depressed. Certain audio files were manually annotated, to the extent possible, with call type, caller id, and miscellaneous notes. For call type annotation, there are three main categories of vocalizations: those that show clear fundamental frequencies (periodic), those that do not (a-periodic), and those that show periodic and a-periodic regions as at least two distinct segments. Calls were identified as belonging to one of 14 categories. Annotations were made using the Praat TextGrid Editor, which allows spectral analysis and annotation of audio files with overlapping events. Annotations were based on written and audio-recorded field notes, and in some cases video recordings. Miscellaneous notes are free-form, and include such information as distance from source, caller identity certainty, and accompanying behavior. Asian Elephant Vocalizations is distributed on six DVD-ROM. [ top ] * (2) NIST 2005 Open Machine Translation (OpenMT) Evaluation is a package containing source data, reference translations, and scoring software used in the NIST 2005 OpenMT evaluation. It is designed to help evaluate the effectiveness of machine translation systems. The package was compiled and scoring software was developed by researchers at NIST, making use of newswire source data and reference translations collected and developed by LDC. The objective of the NIST OpenMT evaluation series is to support research in, and help advance the state of the art of, machine translation (MT) technologies -- technologies that translate text between human languages. Input may include all forms of text. The goal is for the output to be an adequate and fluent translation of the original. The 2004 task was to evaluate translation from Chinese to English and from Arabic to English. Additional information about these evaluations may be found at the NIST Open Machine Translation (OpenMT) Evaluation web site. For each language, the test set consists of two files: a source and a reference file. Each reference file contains four independent translations of the data set. The evaluation year, source language, test set, version of the data, and source vs. reference file are reflected in the file name. [ top ] (3) TRECVID 2006 Keyframes was developed as a collaborative effort between researchers at LDC, NIST, LIMSI-CNRS, and Dublin City University TREC Video Retrieval Evaluation (TRECVID) is sponsored by the National Institute of Standards and Technology (NIST) to promote progress in content-based retrieval from digital video via open, metrics-based evaluation. The keyframes in this release were extracted for use in the NIST TRECVID 2006 Evaluation. TRECVID is a laboratory-style evaluation that attempts to model real world situations or significant component tasks involved in such situations. In 2006 TRECVID completed a 2-year cycle on English, Arabic, and Chinese news video. There weree three system tasks and associated tests:
For a detailed description of the TRECVID Evaluation Tasks, please refer to the NIST TRECVID 2006 Evaluation Description. The video stills that compose this corpus are drawn from approximately 158.6 hours of English, Arabic, and Chinese language video data collected by LDC from NBC, CNN, MSNBC, New Tang Dynasty TV, Phoenix TV, Lebanese Broadcasting Corp., and China Central TV. Shots are fundamental units of video, useful for higher-level processing. To create the master list of shots, the video was segmented. The results of this pass are called subshots. Because the master shot reference is designed for use in manual assessment, a second pass over the segmentation was made to create the master shots of at least 2 seconds in length. These master shots are the ones used in submitting results for the feature and search tasks in the evaluation. In the second pass, starting at the beginning of each file, the subshots were aggregated, if necessary, until the current shot was at least 2 seconds in duration, at which point the aggregation began anew with the next subshot. TRECVID 2006 Keyframes is distributed on one DVD-ROM. |
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