2,671 research outputs found
A Semantic Web Annotation Tool for a Web-Based Audio Sequencer
Music and sound have a rich semantic structure which is so clear to the composer and the listener, but that remains mostly hidden to computing machinery. Nevertheless, in recent years, the introduction of software tools for music production have enabled new opportunities for migrating this knowledge from humans to machines. A new generation of these tools may exploit sound samples and semantic information coupling for the creation not only of a musical, but also of a "semantic" composition. In this paper we describe an ontology driven content annotation framework for a web-based audio editing tool. In a supervised approach, during the editing process, the graphical web interface allows the user to annotate any part of the composition with concepts from publicly available ontologies. As a test case, we developed a collaborative web-based audio sequencer that provides users with the functionality to remix the audio samples from the Freesound website and subsequently annotate them. The annotation tool can load any ontology and thus gives users the opportunity to augment the work with annotations on the structure of the composition, the musical materials, and the creator's reasoning and intentions. We believe this approach will provide several novel ways to make not only the final audio product, but also the creative process, first class citizens of the Semantic We
XML to Annotations Mapping Patterns
Configuration languages based on XML and source code annotations are
very popular in the industry. There are situations in which there
are reasons to move configuration languages from one format to the
other, or to support multiple configuration languages. In such cases
mappings between languages based on these formats have to be defined. Mapping can be used to support multiple configuration languages or to seamlessly move configurations from annotations to XML or vice versa. In this paper, we present XML to annotations mapping patterns that can be used to map languages from one format to the other
An Integrated Framework for Treebanks and Multilayer Annotations
Treebank formats and associated software tools are proliferating rapidly,
with little consideration for interoperability. We survey a wide variety of
treebank structures and operations, and show how they can be mapped onto the
annotation graph model, and leading to an integrated framework encompassing
tree and non-tree annotations alike. This development opens up new
possibilities for managing and exploiting multilayer annotations.Comment: 8 page
Rich Counter-Examples for Temporal-Epistemic Logic Model Checking
Model checking verifies that a model of a system satisfies a given property,
and otherwise produces a counter-example explaining the violation. The verified
properties are formally expressed in temporal logics. Some temporal logics,
such as CTL, are branching: they allow to express facts about the whole
computation tree of the model, rather than on each single linear computation.
This branching aspect is even more critical when dealing with multi-modal
logics, i.e. logics expressing facts about systems with several transition
relations. A prominent example is CTLK, a logic that reasons about temporal and
epistemic properties of multi-agent systems. In general, model checkers produce
linear counter-examples for failed properties, composed of a single computation
path of the model. But some branching properties are only poorly and partially
explained by a linear counter-example.
This paper proposes richer counter-example structures called tree-like
annotated counter-examples (TLACEs), for properties in Action-Restricted CTL
(ARCTL), an extension of CTL quantifying paths restricted in terms of actions
labeling transitions of the model. These counter-examples have a branching
structure that supports more complete description of property violations.
Elements of these counter-examples are annotated with parts of the property to
give a better understanding of their structure. Visualization and browsing of
these richer counter-examples become a critical issue, as the number of
branches and states can grow exponentially for deeply-nested properties.
This paper formally defines the structure of TLACEs, characterizes adequate
counter-examples w.r.t. models and failed properties, and gives a generation
algorithm for ARCTL properties. It also illustrates the approach with examples
in CTLK, using a reduction of CTLK to ARCTL. The proposed approach has been
implemented, first by extending the NuSMV model checker to generate and export
branching counter-examples, secondly by providing an interactive graphical
interface to visualize and browse them.Comment: In Proceedings IWIGP 2012, arXiv:1202.422
Version Control in Online Software Repositories
Software version control repositories provide a uniform and stable interface to manage documents and their version histories. Unfortunately, Open Source systems, for example, CVS, Subversion, and GNU Arch are not well suited to highly collaborative environments and fail to track semantic changes in repositories. We introduce document provenance as our Description Logic framework to track the semantic changes in software repositories and draw interesting results about their historic behaviour using a rule-based inference engine. To support the use of this framework, we have developed our own online collaborative tool, leveraging the fluency of the modern WikiWikiWeb
Identification of Design Principles
This report identifies those design principles for a (possibly new) query and transformation
language for the Web supporting inference that are considered essential. Based upon these
design principles an initial strawman is selected. Scenarios for querying the Semantic Web
illustrate the design principles and their reflection in the initial strawman, i.e., a first draft of
the query language to be designed and implemented by the REWERSE working group I4
Version Control in Online Software Repositories
Software version control repositories provide a uniform and stable interface to manage documents and their version histories. Unfortunately, Open Source systems, for example, CVS, Subversion, and GNU Arch are not well suited to highly collaborative environments and fail to track semantic changes in repositories. We introduce document provenance as our Description Logic framework to track the semantic changes in software repositories and draw interesting results about their historic behaviour using a rule-based inference engine. To support the use of this framework, we have developed our own online collaborative tool, leveraging the fluency of the modern WikiWikiWeb
Italian center for Astronomical Archives publishing solution: modular and distributed
The Italian center for Astronomical Archives tries to provide astronomical
data resources as interoperable services based on IVOA standards. Its VO
expertise and knowledge comes from active participation within IVOA and VO at
European and international level, with a double-fold goal: learn from the
collaboration and provide inputs to the community. The first solution to build
an easy to configure and maintain resource publisher conformant to VO standards
proved to be too optimistic. For this reason it has been necessary to re-think
the architecture with a modular system built around the messaging concept,
where each modular component speaks to the other interested parties through a
system of broker-managed queues. The first implemented protocol, the Simple
Cone Search, shows the messaging task architecture connecting the parametric
HTTP interface to the database backend access module, the logging module, and
allows multiple cone search resources to be managed together through a
configuration manager module. Even if relatively young, it already proved the
flexibility required by the overall system when the database backend changed
from MySQL to PostgreSQL+PgSphere. Another implementation test has been made to
leverage task distribution over multiple servers to serve simultaneously: FITS
cubes direct linking, cubes cutout and cubes positional merging. Currently the
implementation of the SIA-2.0 standard protocol is ongoing while for TAP we
will be adapting the TAPlib library. Alongside these tools a first
administration tool (TASMAN) has been developed to ease the build up and
maintenance of TAP_SCHEMA-ta including also ObsCore maintenance capability.
Future work will be devoted at widening the range of VO protocols covered by
the set of available modules, improve the configuration management and develop
specific purpose modules common to all the service components.Comment: SPIE Astronomical Telescopes + Instrumentation 2018, Software and
Cyberinfrastructure for Astronomy V, pre-publishing draft proceeding (reduced
abstract
- …