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Karl Aberer

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Publications associées (297)

Performance Analysis of Data Processing Architectures for the Smart Grid

Karl Aberer, Matteo Vasirani

2014

B-hist: Entity-centric search over personal web browsing history

Philippe Cudré-Mauroux, Karl Aberer, Michele Catasta, Jean-Eudes Marie Ranvier

Web Search is increasingly entity centric; as a large fraction of common queries target specific entities, search results get progressively augmented with semi-structured and multimedia information about those entities. However, search over personal web br ...

Elsevier2014

Decentralized Planning of Energy Demand for the Management of Robustness and Discomfort

Karl Aberer, Matteo Vasirani

The robustness of smart grids is challenged by unpredictable power peaks or temporal demand oscillations that can cause blackouts and increase supply costs. Planning of demand can mitigate these effects and increase robustness. However, the impact on consu ...

Institute of Electrical and Electronics Engineers2014

System and Method for Optimizing Data Storage in a Distributed Data Storage Environment

Nicolas Bonvin, Karl Aberer, Athanasios Papaioannou

A growing amount of data is produced daily resulting in a growing demand for storage solutions. While cloud storage providers offer a virtually infinite storage capacity, data owners seek geographical and provider diversity in data placement, in order to a ...

2014

Memo-it: Don’t write your diary, Sense it

Karl Aberer, Zhixian Yan, Michele Catasta, Mathieu Monney, Horia Radu, Jean-Eudes Marie Ranvier, Ivan Gavrilovic, Georgios Christodoulou, Matteo Vasirani, Abdessalam Ouaazki, Filip Hrisafov, Boris Perovic

2014

Privacy Enhanced Demand Response with Reputation-based Incentive Distribution

Karl Aberer, Georgios Liassas, Tri Kurniawan Wijaya, Matteo Vasirani

Demand response (DR) is a Smart Grid application that aims at managing consumption of electricity in response to supply-side signals. The exchange of sensitive information (i.e., electricity consumption data) between the consumers and the DR provider is ne ...

2014

A Cost-Benefit Analysis of Data Processing Architectures for the Smart Grid

Karl Aberer, Matteo Vasirani

2014

Measuring and Controlling Unfairness in Decentralized Planning of Energy Demand

Karl Aberer, Matteo Vasirani

2014

Semantic and Sensitivity Aware Location-Privacy Protection for the Internet of Things

Karl Aberer, Jean Paul Calbimonte Perez, Berker Agir

2014

Using Identity Premium for Honesty Enforcement and Whitewashing Prevention

Karl Aberer, Jie Zhang

One fundamental issue with existing reputation systems, particularly those implemented in open and decentralized environments, is whitewashing attacks by opportunistic participants. If identities are cheap, it is beneficial for a rational provider to simpl ...

Wiley-Blackwell2014

Completeness and Ambiguity of Schema Cover

Karl Aberer, Quoc Viet Hung Nguyen, Zoltán Miklós

Given a schema and a set of concepts, representative of entities in the domain of discourse, schema cover deﬁnes correspondences between concepts and parts of the schema. Schema cover aims at interpreting the schema in terms of concepts and thus, vastly si ...

2013

Sustainable Energy Consumption Monitoring in Residential Settings

Karl Aberer, Dipanjan Chakraborty

The continuous growth of energy needs and the fact that unpredictable energy demand is mostly served by unsustainable (i.e. fossil-fuel) power generators have given rise to the development of Demand Response (DR) mechanisms for flattening energy demand. Bu ...

2013

Model-View Sensor Data Management in the Cloud

Karl Aberer, Tian Guo

Infinite nature of sensor data poses a serious challenge for query processing even in a cloud infrastructure. Model-based sensor data approximation reduces the amount of data for query processing, but all modeled segments need to be scanned, in the worst c ...

2013

Energy-Efficient Opportunistic Collaborative Sensing

Karl Aberer, Julien Eberle, Zhixian Yan

This paper studies mobile sensing in a complete distributed and opportunistic scheme. We present a novel sensing strategy for sensing nodes without movement constraints. This strategy offers information sharing and sensor scheduling that maximizes the bene ...

IEEE2013

Web Credibility: Features Exploration and Credibility Prediction

Karl Aberer, Alexandra Olteanu, Stanislav Peshterliev, Xin Liu

2013

Utility-driven Data Acquisition in Participatory Sensing

Karl Aberer, Mehdi Riahi, Immanuel Trummer

Participatory sensing (PS) is becoming a popular data acquisition means for interesting emerging applications. However, as data queries from these applications increase, the sustainability of this platform for multiple concurrent applications is at stake. ...

2013

Semantic Trajectories: Mobility Data Computation and Annotation

Stefano Spaccapietra, Christine Parent, Karl Aberer, Zhixian Yan, Dipanjan Chakraborty

With the large-scale adoption of GPS equipped mobile sensing devices, positional data generated by moving objects (e.g., vehicles, people, animals) are being easily collected. Such data are typically modeled as streams of spatio-temporal (x,y,t) points, ca ...

Assoc Computing Machinery2013

An Evaluation of Model-Based Approaches to Sensor Data Compression

Karl Aberer, Quoc Viet Hung Nguyen, Ho Young Jeung

As the volumes of sensor data being accumulated are likely to soar, data compression has become essential in a wide range of sensor-data applications. This has led to a plethora of data compression techniques for sensor data, in particular model-based appr ...

Institute of Electrical and Electronics Engineers2013

Entity Disambiguation in Tweets leveraging User Social Profiles

Karl Aberer, Surender Reddy Yerva, Michele Catasta

2013

An exploration with online complex activity recognition using cellphone accelerometer

Karl Aberer, Zhixian Yan, Dipanjan Chakraborty, Sumit Mittal

We investigate the problem of online detection of complex activities (such as cooking, lunch, work at desk), i.e., recognizing them while the activities are being performed using parts of the sensor data. In contrast to prior work, where complex activity r ...

ACM2013

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