8,710 research outputs found
Building Domain Specific Languages for Voice Recognition Applications
This paper presents a method of implementing the voice recognition for the control of software applications. The solutions proposed are based on transforming a subset of the natural language in commands recognized by the application using a formal language defined by the means of a context free grammar. At the end of the paper is presented the modality of integration of voice recognition and of voice synthesis for the Romanian language in Windows applications.voice recognition, formal languages, context free grammars, text to speech
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Generation of multi-modal dialogue for a net environment
In this paper an architecture and special purpose markup language for simulated affective face-to-face communication is presented. In systems based on this architecture, users will be able to watch embodied conversational agents interact with each other in virtual locations on the internet. The markup language, or Rich Representation Language (RRL), has been designed to provide an integrated representation of speech, gesture, posture and facial animation
Theory and Practice of Data Citation
Citations are the cornerstone of knowledge propagation and the primary means
of assessing the quality of research, as well as directing investments in
science. Science is increasingly becoming "data-intensive", where large volumes
of data are collected and analyzed to discover complex patterns through
simulations and experiments, and most scientific reference works have been
replaced by online curated datasets. Yet, given a dataset, there is no
quantitative, consistent and established way of knowing how it has been used
over time, who contributed to its curation, what results have been yielded or
what value it has.
The development of a theory and practice of data citation is fundamental for
considering data as first-class research objects with the same relevance and
centrality of traditional scientific products. Many works in recent years have
discussed data citation from different viewpoints: illustrating why data
citation is needed, defining the principles and outlining recommendations for
data citation systems, and providing computational methods for addressing
specific issues of data citation.
The current panorama is many-faceted and an overall view that brings together
diverse aspects of this topic is still missing. Therefore, this paper aims to
describe the lay of the land for data citation, both from the theoretical (the
why and what) and the practical (the how) angle.Comment: 24 pages, 2 tables, pre-print accepted in Journal of the Association
for Information Science and Technology (JASIST), 201
Horn Binary Serialization Analysis
A bit layout is a sequence of fields of certain bit lengths that specifies
how to interpret a serial stream, e.g., the MP3 audio format. A layout with
variable length fields needs to include meta-information to help the parser
interpret unambiguously the rest of the stream; e.g. a field providing the
length of a following variable length field. If no such information is
available, then the layout is ambiguous. I present a linear-time algorithm to
determine whether a layout is ambiguous or not by modelling the behaviour of a
serial parser reading the stream as forward chaining reasoning on a collection
of Horn clauses.Comment: In Proceedings HCVS2016, arXiv:1607.0403
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The National Transport Data Framework
Report by Professor Peter Landshoff (Cambridge University) and
Professor John Polak (Imperial College London) on a project for
the Department for Transport.
emails: [email protected] [email protected] NTDF is designed to be a resource for data owners to deposit descriptions
into a central catalogue, so that people can search for data and find data
and understand their characteristics. The value of this is to individuals, to
commercial organizations, and to public bodies. For example, services that
provide better information to travellers will help to make their journey
less stressful and persuade them to make more use of public transport.
Transport operators need very diverse information to help them
plan developments to their services: demographic, geographical, economic etc.
And policy makers need a similar range of information to help them decide
how to divide their budget and afterwards to evaluate how valuable it has
been.This work was supported by the Department for Transport (DfT)
Analysis on Using Synthesized Singing Techniques in Assistive Interfaces for Visually Impaired to Study Music
Tactile and auditory senses are the basic types of methods that visually impaired people sense the world. Their interaction with assistive technologies also focuses mainly on tactile and auditory interfaces. This research paper discuss about the validity of using most appropriate singing synthesizing techniques as a mediator in assistive technologies specifically built to address their music learning needs engaged with music scores and lyrics. Music scores with notations and lyrics are considered as the main mediators in musical communication channel which lies between a composer and a performer. Visually impaired music lovers have less opportunity to access this main mediator since most of them are in visual format. If we consider a music score, the vocal performerâs melody is married to all the pleasant sound producible in the form of singing. Singing best fits for a format in temporal domain compared to a tactile format in spatial domain. Therefore, conversion of existing visual format to a singing output will be the most appropriate nonlossy transition as proved by the initial research on adaptive music score trainer for visually impaired [1]. In order to extend the paths of this initial research, this study seek on existing singing synthesizing techniques and researches on auditory interfaces
Output constraints in multimedia database systems
Zusammenfassung
Semantische Fehler treten bei jeder Art von Datenverwaltung auf. HerkĂśmmliche
Datenbanksysteme verwenden eine Integritätskontrolle, um semantische Fehler zu
vermeiden. Um die Integrität der Daten zu gewährleisten werden Integritätsregeln
benutzt. Diese Regeln kĂśnnen allerdings nur die Konsistenz einfach
strukturierter Daten ĂźberprĂźfen.
Multimedia Datenbanksystem verwalten neben einfachen alphanumerischen Daten auch
komplexe Mediendaten wie Videos. Um die Konsistenz dieser Daten zu sichern,
bedarf es einer erheblichen Erweiterung des bestehenden Integritätskonzeptes.
Dabei muss besonders auf die konsistente Datenausgabe geachtet werden. Im
Gegensatz zu alphanumerischen Daten kÜnnen Mediendaten während der Ausgabe
verfälscht werden. Dieser Fall kann eintreten, wenn eine geforderte
Datenqualität bei der Ausgabe nicht erreicht werden kann oder wenn
Synchronisationsbedingungen
zwischen Medienobjekten nicht eingehalten werden kĂśnnen. Es besteht daher die
Notwendigkeit, Ouptut Constraints einzufĂźhren. Mit ihrer Hilfe kann definiert
werden, wann die Ausgabe von Mediendaten semantisch korrekt ist. Das
Datenbanksystem kann diese Bedingungen ßberprßfen und so gewährleisten, dass der
Nutzer semantisch einwandfreie Daten erhält.
In dieser Arbeit werden alle Aspekte betrachtet, die notwendig sind, um
Ausgabebedingungen in ein Multimedia Datenbanksystem zu integrieren. Im
einzelnen werden die Modellierung der Bedingungen, deren datenbankinterne
Repräsentation sowie die Bedingungsßberprßfung betrachtet.
FĂźr die Bedingungsmodellierung wird eine Constraint Language auf Basis der
Prädikatenlogik eingefßhrt. Um die Definition von zeitlichen und räumlichen
Synchronisationen zu ermĂśglichen, verwenden wir Allen-Relationen. FĂźr die
effiziente ĂberprĂźfung der Ausgabebedingungen mĂźssen diese aus der
Spezifikationssprache in eine datenbankinterne Darstellung ĂźberfĂźhrt werden.
FĂźr die datenbankinterne Darstellung werden Difference Constraints verwendet.
Diese erlauben eine sehr effiziente BedingungsĂźberprĂźfung. Wir haben Algorithmen
entwickelt, die eine effiziente ĂberprĂźfung von Ausgabebedingungen erlauben und
dies anhand von Experimenten nachgewiesen. Neben der ĂberprĂźfung der Bedingungen
mĂźssen Mediendaten so synchronisiert werden, dass dies den Ausgabebedingungen
entspricht. Wir haben dazu das Konzept des Output Schedules entwickelt. Dieser
wird aufgrund der definierten Ausgabebedingungen generiert.
Durch die Ausgabebedingungen, die in dieser Arbeit eingefĂźhrt werden, werden
semantische Fehler bei der Verwaltung von Mediendaten erheblich reduziert. Die
Arbeit stellt daher einen Beitrag zur qualitativen Verbesserung der Verwaltung
von Mediendaten dar.Semantic errors exist as long as data are managed. Traditional database systems try to prevent this errors by proposing integrity
concepts for stored data. Integrity constraints are used to implement these integrity concepts. However, integrity constraints can only detect semantic errors in elementary data.
Multimedia database systems manage elementary data as well as complex media data, like videos. Considering these media data we need a much wider consistency concept as traditional database systems provide. Especially, data output of media data must be taken into account. In contrast to alphanumeric data the semantics of media data can be falsified during data output if data quality or
synchronization of data are not suitable. Thus, we need a concept for output constraints that allow for preventing semantic errors in case of data output. For integrating output constraints into a multimedia database system we have to consider modelling, representation and checking of output constraints.
For modelling output constraints we have introduced a constraint language which uses the same principles as traditional constraint languages. Our constraint specification language must support temporal and spatial synchronization constraints. However, it is desired to support both kinds of synchronization in almost the same manner. Therefore, we use Allen-Relations for defining temporal
synchronization constraints as well as for defining spatial synchronization constraints.
We need a database internal representation of output constraints that makes efficient constraint checking possible. The Allen-Relations used in the constraint language cannot be checked efficiently. However, difference constraints are a class of constraints that allows an very efficient checking. Therefore, we use difference constraints as database internal representation of output constraints.
As methods for checking consistency of output constraints we use an approach based on graph theory as well as an analytical approach. Both approaches require a constraint graph as data structure. For data output we need an output order that is adequate to the defined output constraints. This output schedule can be produced based on the output constraints.
With output constraints, proposed in this thesis, semantical correctness of media data considering the data output can be supported.Thus, the contribution of this work is an qualitative improvement of managing media data by database systems
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