Οπτικοποίηση αποτελεσμάτων αλγορίθμων εξόρυξης γνώσης από δεδομένα κίνησης

Πλεμένος, Ανάργυρος Ν.

Master Thesis

Author

Πλεμένος, Ανάργυρος Ν.

Date

2011-10

Abstract

With the widespread availability of GPS and RFID devices, it is possible to record the movement of people or objects on a large scale. All these data contain important information which can be exploited by the analysts. Nevertheless, a framework that represents moving data on a map is not adequate to support completely the analysis of information but it needs novel interactive interfaces that are friendly for users and facilitating the mining of knowledge through the use of visual analytic tools which allow the evaluation of the results. In this MSc thesis, the goal is to present a visual analytic tool that the user either is a simple or an expert, has the ability to retrieve, analyze and store the knowledge of moving data using various interactive techniques. Specifically, the work is divided into two major sections. As regards the first section, a mechanism of progressive querying and mining is the target for the extraction and analysis of knowledge step by step where at each level the user moves in greater depth and more detail. The progressive querying and mining enables the end user to use and combine several data mining algorithms together as well as the queries of the HERMES. Concerning the second section, the presented platform uses mining techniques that preserve the privacy of data. In more detail, the platform includes two important engines, (a) a simple query mechanism for both managing mobility data and preserving personal data, and (b) data anonymization algorithms that can be evaluated through various data mining techniques. This platform presents a complete set of the state of the art data anonymization algorithms such as NWA and W4M and data mining techniques which have been integrated with a query engine and a privacy query engine. Finally, I describe the technical steps that a developer follows to integrate a new algorithm as well as I depict the process of system calls by running a query to visualizing the output in a 3D globe.

Postgraduate Studies Programme

Ψηφιακά Συστήματα και Υπηρεσίες

Department

Σχολή Τεχνολογιών Πληροφορικής και Επικοινωνιών. Τμήμα Πληροφορικής

Number of pages

Language

Greek

URI

https://dione.lib.unipi.gr/xmlui/handle/unipi/7751

Collections

Τμήμα Πληροφορικής

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