Papers by Emanuele Della Valle
Semantic service discovery and matchmaking has received increased attention within the last years... more Semantic service discovery and matchmaking has received increased attention within the last years. Various approaches have been proposed but agreed upon criteria or common use and test cases to objectively evaluate such approaches are widely lacking. In this paper we present an in-depth comparison of the solutions to the discovery problems defined by the SWS-Challenge 2006. By means of this common and independently developed scenario we can develop a much better understanding for the applied technologies in general, but also and in particular for the trade-offs involved in the different approaches.
IEEE Internet Computing, 2014
The authors' Continuous Predictive Social Media Analytics system operates in real time on social ... more The authors' Continuous Predictive Social Media Analytics system operates in real time on social media streams and graphs to recommend venues to visitors of geo-and temporally bounded city-scale events. By combining deductive and inductive stream reasoning techniques with visitor-modeling functionalities, this system semantically analyzes and links visitors' social network activities to produce high-quality link predictions when information about preferences is sparse. The authors demonstrate their system's quality with experiments on real-world data.
Lecture Notes in Business Information Processing, 2008
The agreement is a crucial part of our living together. Important opportunities for sharing resou... more The agreement is a crucial part of our living together. Important opportunities for sharing resources, integrating systems and collaborating depend on our ability to agree. While we are interested in methods and technologies that support shared agreement, we somehow tend to forget the disagreement; indeed, it is also a part of reality. In the Semantic Web field, most of research activities investigate ontology agreement and its formalization, rather than the disagreement and the best practices about its extended use. We claim that the industrial uptake of the Semantic Web is severely limited by the fact that, in the real world, shared agreements are difficult to reach and maintain and that "agreeing while disagreeing" is a common practice. In this paper we illustrate a best practice, which we learned from practical experience, that makes use of an (almost) unexplored potentiality of the Semantic Web to express disagreement, and we describe its use in the e-employment sector.
Lecture Notes in Computer Science, 2012
Consider an urban environment and its semi-public realms (e.g., shops, bars, visitors attractions... more Consider an urban environment and its semi-public realms (e.g., shops, bars, visitors attractions, means of transportation). Who is the maven of a district? How fast and how broad can such maven influence the opinions of others? These are just few of the questions BOTTARI (our Location-based Social Media Analysis mobile app) is getting ready to answer. In this position paper, we recap our investigation on deductive and inductive stream reasoning for social media analysis, and we show how the results of this research form the underpinning of BOTTARI.
Lecture Notes in Business Information Processing, 2009
... Our long-time experience in the Semantic Web field made us build a lot of prototypes and demo... more ... Our long-time experience in the Semantic Web field made us build a lot of prototypes and demo applications to demonstrate the applicability and the use ... on the definition of a set of primitives that are familiar to the data manager as well (and not only to the Web expert), that we ...
Web Information Retrieval, 2013
During the last 20 years a number of techniques to publish data on the Web have emerged. They ran... more During the last 20 years a number of techniques to publish data on the Web have emerged. They range from the inexpensive approach of setting up a Web form to query a database, to the costly one of publishing Linked Data. So far none of these techniques has emerged as the preferable one, but search engine rich snippets are rapidly changing this game. Search engine optimization is becoming the driving business model for data publishing. This chapter surveys, in chronological order, the different techniques data owners have been using to publish data on the Web, provides a mean to comparatively evaluate them, and presents an outlook on the near future of Web data publishing.
ACM SIGMOD Record, 2010
Continuous SPARQL (C-SPARQL) is a new language for continuous queries over streams of RDF data. C... more Continuous SPARQL (C-SPARQL) is a new language for continuous queries over streams of RDF data. CSPARQL queries consider windows, i.e., the most recent triples of such streams, observed while data is continuously flowing. Supporting streams in RDF format guarantees interoperability and opens up important applications, in which reasoners can deal with knowledge evolving over time. Examples of such application domains include real-time reasoning over sensors, urban computing, and social semantic data. In this paper, we present the C-SPARQL language extensions in terms of both syntax and examples. Finally, we discuss existing applications that already use C-SPARQL and give an outlook on future research opportunities.
2008 Sixth European Conference on Web Services, 2008
The increasing availability of Web Services asked for in-vestigating ways to automate the discove... more The increasing availability of Web Services asked for in-vestigating ways to automate the discovery process. Dis-covery processes enhanced with semantics can be recog-nize to be general, but often they lack the flexibility needed in specific domains. In this paper, we propose the ...
Glue 1 [1] is a WSMO compliant discovery engine [2][3] that aims at developing an efficient syste... more Glue 1 [1] is a WSMO compliant discovery engine [2][3] that aims at developing an efficient system for the management of semantically described Web Services and their discovery. In this document we provide a use case of mediator centric Discovery for eHealth we have developed in the COCOON project 2 [4] and we deployed both in COCOON project and in Nomadic Media project 3 .
Employment Services are an important topic in the agenda of local governments and in the EU due t... more Employment Services are an important topic in the agenda of local governments and in the EU due to their social implications, such as sustainability, workforce mobility, workers' re-qualification paths, training for fresh graduates and students. Many administrations started their own E-Government projects whose imitations emerge as the demand of workers mobility increases. The SEEMP system presented in this paper overcomes this issue in different ways: starting bilateral communications with near-border similar offices, building a federation of the local employment services, and merging isolate trials. The SEEMP approach relies on a distributed semantic service oriented infrastructure able to federate local projects, in order to create geographically aggregated services for employment by leveraging existing local ones. The social and technical aspects of the SEEMP project are presented, showing how the SEEMP system is integrated with National level systems.
This is an experimental feature that aims at harnessing Wisdoms of the Crowds as done in many Web... more This is an experimental feature that aims at harnessing Wisdoms of the Crowds as done in many Web 2.0 successful approaches (e.g. Amazon recommendations, Netflix movie clusters, Last.fm playlists, etc.
wasp.cs.vu.nl
Abstract. Data Streams - unbounded sequences of time-varying data elements - are pervasive. They ... more Abstract. Data Streams - unbounded sequences of time-varying data elements - are pervasive. They occur in a variety of modern applications including the Web where blogs, feeds, and microblogs are increasingly adopted to distribute and present information in ...
In this paper we present the challenging problem of realizing the Urban Computing vision and in p... more In this paper we present the challenging problem of realizing the Urban Computing vision and in particular we describe the requirements for future mobility management systems. We show that novel multidisciplinary ideas are required to address the Urban Computing challenge and that only partial solutions can be found today. The Urban Computing challenge is open and many efforts are needed to address it.
Proc. SWESW, 2008
Abstract. Today's IT architectures are largely considered the biggest roadblocks that most c... more Abstract. Today's IT architectures are largely considered the biggest roadblocks that most companies face when making strategic business moves. The good news is that the Software Engineering community and the Semantic Web community are bridging their efforts to foster a new generation of design and development tools. In this paper we describe a top-down approach to the design and development of applications employing Semantic Web Services, that combines semantic methods and tools (ie, ontology engineering, semantic service ...
5th International Workshop on Ranking in Databases (DBRANK 2011), 2011
ACM Transactions on Internet Technology, 2007
This article proposes a model-driven methodology to design and develop semantic Web service appli... more This article proposes a model-driven methodology to design and develop semantic Web service applications and their components, described according to the emerging WSMO standard. In particular, we show that business processes and Web engineering models have sufficient expressive power to support the semiautomatic extraction of semantic descriptions (i.e., WSMO ontologies, goals, Web services, and mediators), thus partially hiding the complexity of dealing with semantics. Our method is based on existing models for the specification of business processes (BPMN) combined with Web engineering models for designing and developing semantically rich Web applications (WebML). The proposed approach leads from an abstract view of the business needs to a concrete implementation of the application by means of several design steps; high-level models are transformed into software components. Our framework increases the efficiency of the whole design process, yielding to the construction of semantic...
Semantic Web, 2014
Metastatic melanoma is a highly aggressive malignancy that has traditionally been very diffi cult... more Metastatic melanoma is a highly aggressive malignancy that has traditionally been very diffi cult to treat. However, after decades of basic research into the signal transduction pathways that promote cancer cell survival, chemoresistance, growth, and crosstalk with the immune system, targeted therapies have now been developed that off er improved survival for patients with metastatic melanoma. Some of the most promising therapies that have been developed include ipilimumab, an anti-cytotoxic T lymphocyte antigen 4 antibody that enhances T-cell activity in the tumour, and selective BRAF inhibitors, such as vemurafenib that blocks tumour cell proliferation in patients with activating BRAF mutations. Although these treatments off er substantial hope for patients, they are not without their drawbacks, which include adverse side-eff ects, drug resistance, and eventual relapse. Nanotherapeutics holds signifi cant promise to circumvent these shortcomings and has the additional advantage of potentially functioning as a diagnostic device. We will discuss the scope of the use of such multimodal nanoparticles for melanoma treatment and ask whether such particles can off er patients with metastatic melanoma improved prognoses for the future.
More and more applications require real-time processing of massive, dynamically generated, ordere... more More and more applications require real-time processing of massive, dynamically generated, ordered data; order is an essential factor as it reflects recency or relevance. Semantic technologies risk being unable to meet the needs of such applications, as they are not equipped with the appropriate instruments for answering queries over massive, highly dynamic, ordered data sets. In this vision paper, we argue that some data management techniques should be exported to the context of semantic technologies, by integrating ordering with reasoning, and by using methods which are inspired by stream and rank-aware data management. We systematically explore the problem space, and point both to problems which have been successfully approached and to problems which still need fundamental research, in an attempt to stimulate and guide a paradigm shift in semantic technologies.
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Papers by Emanuele Della Valle