Xabier Laiseca | Universidad de Deusto (original) (raw)

Papers by Xabier Laiseca

Increasingly, more important information is being shared through Twitter. New opportunities arise... more Increasingly, more important information is being shared through Twitter. New opportunities arise to use this tool to detect emergencies and extract crucial information about the scope and nature of that event. A major challenge for the extraction of emergency event information from Twitter is represented by the unstructured and noisy nature of tweets. Within the SABESS project we propose a combined structural and content based analysis approach.

Since Sir Tim Berners-Lee announced the best practices to publish semantic data through the Web, ... more Since Sir Tim Berners-Lee announced the best practices to publish semantic data through the Web, Linked Data principles have been introduced into a wide variety of application domains. This usage of Linked Data eases the enrichment of offered data in a grade that the semantic data that not applies the Linked Data principles never would achieve. In this paper, we present LinkedQR, a tool to improve the collaboration between QR codes and Linked Data; and a case study based on the tourism sector located into an art gallery.

morelab.deusto.es

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Ambient Assisted …, Jan 1, 2011

People's impairments cause a wide range of difficulties in everyday tasks. Particularly, handicap... more People's impairments cause a wide range of difficulties in everyday tasks. Particularly, handicapped people face many challenges both at home, but especially outside it, where their reduced mobility is a burden. Buying in a supermarket can be sometimes troublesome for them and so as to facilitate this task, a product locator application is proposed. This application runs on heterogeneous personal mobile devices keeping the user private information safe on them, and it locates the desired products over each supermarket's map.

… Friendly Technology for …, Jan 1, 2010

This paper describes an AAL-enabling platform which combines OSGi middleware, interactive TV, RFI... more This paper describes an AAL-enabling platform which combines OSGi middleware, interactive TV, RFID and NFC in order to ease the day to day of not only dependant or semi-dependant elderly people (its main focus) but also their care takers and relatives. The end result is an affordable, unobtrusive, evolvable, usable and easily deployable ICT infrastructure which aims to approach the vision of "AAL for All".

… Environments …, Jan 1, 2008

This work describes an OSGi-based middleware platform to enable more scalable, future-proof, cost... more This work describes an OSGi-based middleware platform to enable more scalable, future-proof, cost-efficient and standard-following intelligent environments. It complements OSGi with two main features which make it even more suitable for intelligent environment management: a) dynamic discovery and monitoring of distributed semantic services and b) semantic context modelling and reasoning for intelligent service provision. Furthermore, it evaluates the suitability of applying semantic technologies in the construction of intelligent environment middleware.

morelab.deusto.es

Context in an environment usually suffers from sudden changes; people and devices move from one p... more Context in an environment usually suffers from sudden changes; people and devices move from one place to another, previously unknown objects appear and existing ones disappear. AmI-enhanced environments must be flexible enough to adapt and respond to these changes. This work describes a semantic infrastructure which manages context, reasons over it and, more significantly, it is capable of dynamically enriching the ontology that models context.

Ambient Assisted …, Jan 1, 2011

The increase of life expectancy has arisen new challenges related with the amount of resources re... more The increase of life expectancy has arisen new challenges related with the amount of resources required to attend elderly people with cognitive diseases. These requirements, such as medical staff and financial resources, have been multiplied in the last years, and this tendency will continue in the forthcoming ones. In order to reduce these requirements, the introduction of new technologies will be a key aspect. In this paper we propose a test-question-based memory game that collects the answers given by patients and facilitates access to this information to caregivers and relatives.

3rd Symposium of …, Jan 1, 2009

AmI environments are dynamic. They change rapidly and continuously due to the appearance and disa... more AmI environments are dynamic. They change rapidly and continuously due to the appearance and disappearance of devices, people and changes in their situation. These changes need to be reflected in the context information which is collected and maintained by the Ambient Intelligence applications. In this work we present a semantic infrastructure whose context information can be dynamically enriched and extended by the dynamically discovered objects in the environment, and which enables to reason over it.

Activity Recognition in …, Jan 1, 2011

This paper describes the architecture and components of an AAL-enabling platform, centred around ... more This paper describes the architecture and components of an AAL-enabling platform, centred around interactive TV (iTV), which combines OSGi middleware, RFID and NFC in order to ease the day to day of dependant or semidependant elderly people (its main focus), their care takers and relatives. The end result is an affordable, unobtrusive, evolvable, usable and easily deployable ICT infrastructure which aims to approach the vision of "AAL for All". This is, it seeks a more widespread adoption of AAL and a better QoS on caretaking through the combination of common hardware, OSGi dynamic service and mobile-aided care data management.

morelab.deusto.es

The use of passive HF RFID tags in healthcare environments is by no means new. However, RFID tags... more The use of passive HF RFID tags in healthcare environments is by no means new. However, RFID tags' user-writable data storage capability is often not used in favour of an over-the-network data access approach. Thus, RFID tags are usually relegated to mere remote data identifiers. This paper explores the potential of actually using the storage capability of an RFID tag as a portable database of the latest events in the life of a patient in an AAL-enabled environment; both from a theoretical approach, encompassing studies on the actual data storage capacity on HF RFID tags; as well as a practical one, describing our proposal for an NFC-powered platform that uses the data-ontag paradigm to be used in environments where: a) the mentioned portable patient logs can lead to improvements on patient attention and quality of treatment; and b) a continuous data link approach is not technically or economically feasible.

morelab.deusto.es

As new challenges motivated by the Semantic Web get resolved, the need for getting protected agai... more As new challenges motivated by the Semantic Web get resolved, the need for getting protected against new types of security aws becomes critical. In the Semantic Web the old and well-known vulnerabilities reappear with all the power of the new semantic mechanisms. This semantic mechanisms oer new and dangerous possibilities to malicious users. For this reason it is important for the developers to know and prevent the vulnerabilities in their applications. In this paper we analyze the possibilities of injection attacks in the most used semantic query / update languages (SPARQL/SPARUL).

3rd Symposium of …, Jan 1, 2009

This work describes several infrastructure contributions aimed to simplify the deployment of Ambi... more This work describes several infrastructure contributions aimed to simplify the deployment of Ambient Assisted Living (AAL) environments so that elderly people can maximize the time they live independently, through the help of ICT, at their own homes. Three core contributions are reviewed: a) a multi-layered OSGi-based middleware architecture which enables adding new environment monitoring and actuating devices seamlessly, b) an easy-to-use elderly-accessible front-end to comfortably control from a touch screen environment services together with a custom-built alert bracelet to seek assistance anywhere at any time and c) a rule-based engine which allows the configuration of the reactive behaviour of an environment as a set of rules

3rd Symposium of …, Jan 1, 2009

Wireless sensor networks are a hot topic in Ubiquitous Computing for implementing context-awarene... more Wireless sensor networks are a hot topic in Ubiquitous Computing for implementing context-awareness scenarios. The connection of sensor nodes to the Internet leads to new ways for remote monitoring of human behavior in real-time. In this paper, we introduce Flexeo: a flexible architecture for implementing monitoring solutions based on wireless sensor networks, with distributed intelligence at different layers. In this way, sensor-populated scenarios may communicate with Internet-based facilities enabling the vision of an Internet of Things.

Increasingly, more important information is being shared through Twitter. New opportunities arise... more Increasingly, more important information is being shared through Twitter. New opportunities arise to use this tool to detect emergencies and extract crucial information about the scope and nature of that event. A major challenge for the extraction of emergency event information from Twitter is represented by the unstructured and noisy nature of tweets. Within the SABESS project we propose a combined structural and content based analysis approach.

Since Sir Tim Berners-Lee announced the best practices to publish semantic data through the Web, ... more Since Sir Tim Berners-Lee announced the best practices to publish semantic data through the Web, Linked Data principles have been introduced into a wide variety of application domains. This usage of Linked Data eases the enrichment of offered data in a grade that the semantic data that not applies the Linked Data principles never would achieve. In this paper, we present LinkedQR, a tool to improve the collaboration between QR codes and Linked Data; and a case study based on the tourism sector located into an art gallery.

morelab.deusto.es

Academia.edu helps academics follow the latest research.

Ambient Assisted …, Jan 1, 2011

People's impairments cause a wide range of difficulties in everyday tasks. Particularly, handicap... more People's impairments cause a wide range of difficulties in everyday tasks. Particularly, handicapped people face many challenges both at home, but especially outside it, where their reduced mobility is a burden. Buying in a supermarket can be sometimes troublesome for them and so as to facilitate this task, a product locator application is proposed. This application runs on heterogeneous personal mobile devices keeping the user private information safe on them, and it locates the desired products over each supermarket's map.

… Friendly Technology for …, Jan 1, 2010

This paper describes an AAL-enabling platform which combines OSGi middleware, interactive TV, RFI... more This paper describes an AAL-enabling platform which combines OSGi middleware, interactive TV, RFID and NFC in order to ease the day to day of not only dependant or semi-dependant elderly people (its main focus) but also their care takers and relatives. The end result is an affordable, unobtrusive, evolvable, usable and easily deployable ICT infrastructure which aims to approach the vision of "AAL for All".

… Environments …, Jan 1, 2008

This work describes an OSGi-based middleware platform to enable more scalable, future-proof, cost... more This work describes an OSGi-based middleware platform to enable more scalable, future-proof, cost-efficient and standard-following intelligent environments. It complements OSGi with two main features which make it even more suitable for intelligent environment management: a) dynamic discovery and monitoring of distributed semantic services and b) semantic context modelling and reasoning for intelligent service provision. Furthermore, it evaluates the suitability of applying semantic technologies in the construction of intelligent environment middleware.

morelab.deusto.es

Context in an environment usually suffers from sudden changes; people and devices move from one p... more Context in an environment usually suffers from sudden changes; people and devices move from one place to another, previously unknown objects appear and existing ones disappear. AmI-enhanced environments must be flexible enough to adapt and respond to these changes. This work describes a semantic infrastructure which manages context, reasons over it and, more significantly, it is capable of dynamically enriching the ontology that models context.

Ambient Assisted …, Jan 1, 2011

The increase of life expectancy has arisen new challenges related with the amount of resources re... more The increase of life expectancy has arisen new challenges related with the amount of resources required to attend elderly people with cognitive diseases. These requirements, such as medical staff and financial resources, have been multiplied in the last years, and this tendency will continue in the forthcoming ones. In order to reduce these requirements, the introduction of new technologies will be a key aspect. In this paper we propose a test-question-based memory game that collects the answers given by patients and facilitates access to this information to caregivers and relatives.

3rd Symposium of …, Jan 1, 2009

AmI environments are dynamic. They change rapidly and continuously due to the appearance and disa... more AmI environments are dynamic. They change rapidly and continuously due to the appearance and disappearance of devices, people and changes in their situation. These changes need to be reflected in the context information which is collected and maintained by the Ambient Intelligence applications. In this work we present a semantic infrastructure whose context information can be dynamically enriched and extended by the dynamically discovered objects in the environment, and which enables to reason over it.

Activity Recognition in …, Jan 1, 2011

This paper describes the architecture and components of an AAL-enabling platform, centred around ... more This paper describes the architecture and components of an AAL-enabling platform, centred around interactive TV (iTV), which combines OSGi middleware, RFID and NFC in order to ease the day to day of dependant or semidependant elderly people (its main focus), their care takers and relatives. The end result is an affordable, unobtrusive, evolvable, usable and easily deployable ICT infrastructure which aims to approach the vision of "AAL for All". This is, it seeks a more widespread adoption of AAL and a better QoS on caretaking through the combination of common hardware, OSGi dynamic service and mobile-aided care data management.

morelab.deusto.es

The use of passive HF RFID tags in healthcare environments is by no means new. However, RFID tags... more The use of passive HF RFID tags in healthcare environments is by no means new. However, RFID tags' user-writable data storage capability is often not used in favour of an over-the-network data access approach. Thus, RFID tags are usually relegated to mere remote data identifiers. This paper explores the potential of actually using the storage capability of an RFID tag as a portable database of the latest events in the life of a patient in an AAL-enabled environment; both from a theoretical approach, encompassing studies on the actual data storage capacity on HF RFID tags; as well as a practical one, describing our proposal for an NFC-powered platform that uses the data-ontag paradigm to be used in environments where: a) the mentioned portable patient logs can lead to improvements on patient attention and quality of treatment; and b) a continuous data link approach is not technically or economically feasible.

morelab.deusto.es

As new challenges motivated by the Semantic Web get resolved, the need for getting protected agai... more As new challenges motivated by the Semantic Web get resolved, the need for getting protected against new types of security aws becomes critical. In the Semantic Web the old and well-known vulnerabilities reappear with all the power of the new semantic mechanisms. This semantic mechanisms oer new and dangerous possibilities to malicious users. For this reason it is important for the developers to know and prevent the vulnerabilities in their applications. In this paper we analyze the possibilities of injection attacks in the most used semantic query / update languages (SPARQL/SPARUL).

3rd Symposium of …, Jan 1, 2009

This work describes several infrastructure contributions aimed to simplify the deployment of Ambi... more This work describes several infrastructure contributions aimed to simplify the deployment of Ambient Assisted Living (AAL) environments so that elderly people can maximize the time they live independently, through the help of ICT, at their own homes. Three core contributions are reviewed: a) a multi-layered OSGi-based middleware architecture which enables adding new environment monitoring and actuating devices seamlessly, b) an easy-to-use elderly-accessible front-end to comfortably control from a touch screen environment services together with a custom-built alert bracelet to seek assistance anywhere at any time and c) a rule-based engine which allows the configuration of the reactive behaviour of an environment as a set of rules

3rd Symposium of …, Jan 1, 2009

Wireless sensor networks are a hot topic in Ubiquitous Computing for implementing context-awarene... more Wireless sensor networks are a hot topic in Ubiquitous Computing for implementing context-awareness scenarios. The connection of sensor nodes to the Internet leads to new ways for remote monitoring of human behavior in real-time. In this paper, we introduce Flexeo: a flexible architecture for implementing monitoring solutions based on wireless sensor networks, with distributed intelligence at different layers. In this way, sensor-populated scenarios may communicate with Internet-based facilities enabling the vision of an Internet of Things.