There is a fundamental discrepancy between the targeted and actual users of current analytics frameworks. Most systems are designed for the challenges of the Googles and Facebooks of the world— processing petabytes of data distributed across large cloud deployments consisting of thousands of cheap commodity machines. Yet, the vast majority of users analyze relatively small datasets of up to sev...

We present an attempt at a coherent vision of an end-to-end translingual information retrieval system. We begin by presenting a sample of the broad range of possibilities, and the results of some initial work comparing the diierent approaches. We then present an overall workstation architecture, followed by two possible approaches to the actual translingual IR stage presented in detail. Ranking...

We previously proposed a packed graphical representation to succinctly represent a huge number of alternative semantic representations of a given sentence. We also showed that this representation could improve text interpretation accuracy considerably because the system could postpone resolving ambiguity until more evidence accumulates. This paper discusses our plan to build an end-to-end text ...

This paper introduces a new 4D Markov chain model for IEEE 802.15.4 wireless transmission, which corrects and extends an existing 3D model, providing more accurate and comprehensive results. It also introduces an analytical technique for calculating both the pdf and mean of the number of timeslots required to complete all transmissions, when a set of nodes contend for the channel at the beginni...

To utilize the full potential of structured or semi-structured data stored across different information systems, users and applications must not be confronted directly with the individual, heterogeneous data sources, but instead be supplied with a customized integrated view on the data. Traditional information integration is relying on a human-driven process to accomplish this task. While feasi...

Most visualizations today are produced by retrieving data from a database and using a specialized visualization tool to render it. This decoupled approach results in significant duplication of functionality, such as aggregation and filters, and misses tremendous opportunities for cross-layer optimizations. In this paper, we present the case for an integrated Data Visualization Management System...

Most visualizations today are produced by retrieving data from a database and using a specialized visualization tool to render it. This decoupled approach results in significant duplication of functionality, such as aggregation and filters, and misses tremendous opportunities for cross-layer optimizations. In this paper, we present the case for an integrated Data Visualization Management System...

The thesis investigates the reliable transport from one sender to a group of receivers (multicast). It is often stated that network support is required to allow for efficient reliable multicast. This thesis shows that this is not the case. Efficient reliable multicast is possible on a pure end-to-end basis even for a very large number of receivers. In the case of data loss in the network, relia...

Data Aggregation is widely used technique in wireless sensor networks (WSNs). The Security become a major issue, data confidentiality and data integrity in data aggregation. data aggregation should be incorporated in order to save energy. In this paper, the secure data aggregation schemes are categorized into hop by hop aggregation and end to end aggregation, and then the secure data aggregatio...

While the revolutionary cloud computing paradigm offers substantial benefits to businesses, recent data breaches and the lack of dedicated end-to-end security solutions refrain the rapid adoption of this technology. The TREDISEC project aims at increasing trust in cloud computing by designing new security primitives ensuring data security and user privacy and supporting the underlying storage a...