15,736 research outputs found
Spoken content retrieval: A survey of techniques and technologies
Speech media, that is, digital audio and video containing spoken content, has blossomed in recent years. Large collections are accruing on the Internet as well as in private and enterprise settings. This growth has motivated extensive research on techniques and technologies that facilitate reliable indexing and retrieval. Spoken content retrieval (SCR) requires the combination of audio and speech processing technologies with methods from information retrieval (IR). SCR research initially investigated planned speech structured in document-like units, but has subsequently shifted focus to more informal spoken content produced spontaneously, outside of the studio and in conversational settings. This survey provides an overview of the field of SCR encompassing component technologies, the relationship of SCR to text IR and automatic speech recognition and user interaction issues. It is aimed at researchers with backgrounds in speech technology or IR who are seeking deeper insight on how these fields are integrated to support research and development, thus addressing the core challenges of SCR
Access to recorded interviews: A research agenda
Recorded interviews form a rich basis for scholarly inquiry. Examples include oral histories, community memory projects, and interviews conducted for broadcast media. Emerging technologies offer the potential to radically transform the way in which recorded interviews are made accessible, but this vision will demand substantial investments from a broad range of research communities. This article reviews the present state of practice for making recorded interviews available and the state-of-the-art for key component technologies. A large number of important research issues are identified, and from that set of issues, a coherent research agenda is proposed
User evaluation outside the lab: the trial of FĂschlĂĄr-News
A user study of FĂschlĂĄr-News system was conducted in Spring 2004 with 16 users, each user using the system for a 1-month period. FĂschlĂĄr-News is an experimental online news archive that incorporates various automatic content-based video indexing techniques and a news story recommender algorithm to process and index the daily 9 oâclock broadcast news from TV and allows its users to browse, search, be recommended, and play news stories on a conventional web browser. Pre and post-trial questionnaires, interaction logging and incident diary methods collected both qualitative and quantitative usage data during the trial period. While the details of the findings from this evaluation is reported elsewhere, in this paper we report the details of the methodology taken and our experience of conducting this evaluation
CHORUS Deliverable 2.1: State of the Art on Multimedia Search Engines
Based on the information provided by European projects and national initiatives related to multimedia search as well as domains experts that participated in the CHORUS Think-thanks and workshops, this document reports on the state of the art related to multimedia content search from, a technical, and socio-economic perspective.
The technical perspective includes an up to date view on content based indexing and retrieval technologies, multimedia search in the context of mobile devices and peer-to-peer networks, and an overview of current evaluation and benchmark inititiatives to measure the performance of multimedia search engines.
From a socio-economic perspective we inventorize the impact and legal consequences of these technical advances and point out future directions of research
Technology-Based Family Education In ASL/English Bilingual Schools For The Deaf
More research on how ASL/English bilingual schools for the deaf educate hearing families to apply bilingual education methodology at home is warranted. Given the rising use of technology in schools, its role within these family education programs was the primary focus. Thirty-two participants from 22 different schools completed an online, researcher-developed survey. Follow-up, online interviews were conducted with 7 participants, and artifacts were collected from 10 schools. Qualitative and quantitative descriptions express the studyâs results based on technology used as an informational and influential tool, counseling and coping tool, diversity tool, and program evaluation tool. Schools are using multiple forms of technology to connect, educate, and support hearing families of deaf children. Email, websites, text messaging, and electronic versions of books / booklets / flyers / brochures are widely used. Social media, online videos, and videophones grant families and educators additional avenues for collaboration. Video messaging, DVDâs, CDâs, podcasts, and online trainings and meetings are less often applied in family programming. This study provides findings to support the continued improvement of family education programming for hearing families of deaf children. Deaf children, their families, service providers, schools for the deaf, and deaf education service provider training programs stand to benefit from the studyâs descriptive information
The design and evaluation of non-visual information systems for blind users
This research was motivated by the sudden increase of hypermedia information (such as
that found on CD-ROMs and on the World Wide Web), which was not initially accessible
to blind people, although offered significant advantages over traditional braille and audiotape
information. Existing non-visual information systems for blind people had very
different designs and functionality, but none of them provided what was required according
to user requirements studies: an easy-to-use non-visual interface to hypermedia material
with a range of input devices for blind students. Furthermore, there was no single suitable
design and evaluation methodology which could be used for the development of non-visual
information systems. The aims of this research were therefore: (1) to develop a generic,
iterative design and evaluation methodology consisting of a number of techniques suitable
for formative evaluation of non-visual interfaces; (2) to explore non-visual interaction
possibilities for a multimodal hypermedia browser for blind students based on user
requirements; and (3) to apply the evaluation methodology to non-visual information
systems at different stages of their development.
The methodology developed and recommended consists of a range of complementary
design and evaluation techniques, and successfully allowed the systematic development of
prototype non-visual interfaces for blind users by identifying usability problems and
developing solutions. Three prototype interfaces are described: the design and evaluation
of two versions of a hypermedia browser; and an evaluation of a digital talking book.
Recommendations made from the evaluations for an effective non-visual interface include
the provision of a consistent multimodal interface, non-speech sounds for information and
feedback, a range of simple and consistent commands for reading, navigation, orientation
and output control, and support features. This research will inform developers of similar
systems for blind users, and in addition, the methodology and design ideas are considered
sufficiently generic, but also sufficiently detailed, that the findings could be applied
successfully to the development of non-visual interfaces of any type
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