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Skip to Search Results- 10Zaiane, Osmar
- 5Nascimento, Mario
- 4Nascimento, Mario A.
- 3Oliveira, Stanley
- 2Antonie, Maria-Luiza
- 2El-Hajj, Mohammad
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Content-Based Image Retrieval Using Binary Signatures
2000
Nascimento, Mario, Chitkara, Vishal, Mastaller, Curt
Technical report TR00-18. Significant research has focused on determining efficient methodologies for retrieving images in large image databases. In this paper, we propose two variations of a new image abstraction technique based on signature bit-strings and an appropriate similarity metric. The...
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2010
Renz, Matthias, Kriegel, Hans-Peter, Nascimento, Mario A., Follmann, Anna, Kroeger, Peer, Zuefle, Andreas
Technical report TR10-09. Count queries in wireless sensor networks report the number of sensor nodes for which the measured values satisfy a given query predicate. However, measurements in wireless sensor networks are typically imprecise due to limited accuracy of the sensor hardware or...
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2002
Lee, Chi-Hoon, Foss, Andrew, Zaiane, Osmar, Wang, Weinan
Technical report TR02-03. Clustering is the problem of grouping data based on similarity and consists of maximizing the intra-group similarity while minimizing the iter-group similarity. While this problem has attracted the attention of many researchers for many years, we are witnessing a...
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2010
Niedermayer, Johannes, Nascimento, Mario A., Kroeger, Peer, Kriegel, Hans-Peter, Renz, Matthias
Technical report TR10-03. Top-k queries are a popular type of query in Wireless Sensor Networks. Typical solutions rely on coordinated root-to-nodes and nodes-to-root messages and on maintaining filters at the nodes, aiming at suppressing unnecessary messages, hence saving energy and furthering...
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2001
Lu, Paul, El-Hajj, Mohammad, Zaiane, Osmar
Technical report TR01-12. Searching for frequent patterns in transactional databases is considered one of the most important data mining problems. Most current association mining algorithms, whether sequential or parallel, adopt an apriori-like algorithm that requires full multiple I/O scans of...
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2003
Oliveira, Stanley, Zaiane, Osmar
Technical report TR03-12. Despite its benefit in a wide range of applications, data mining techniques also have raised a number of ethical issues. Some such issues include those of privacy, data security, intellectual property rights, and many others. In this paper, we address the privacy problem...
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2011
Nascimento, Mario A, Ammar, Khaled
Technical report TR11-03. Wireless Sensor Networks (WSNs) are typically used to collect values of some phenomena in a monitored area. In many applications, users are interested in summaries of the observed data, e.g., a histogram reflecting the distribution of the collected values. However,...
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Inverted Matrix: Efficient Discovery of Frequent Items in Large Datasets in the Context of Interactive Mining
Download2003
El-Hajj, Mohammad, Zaiane, Osmar
Technical report TR03-08. Existing association rule mining algorithms suffer from many problems when mining massive transactional datasets. One major problem is the high memory dependency: either the gigantic data structure built is assumed to fit in main memory, or the recursive mining process...
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2012
Kazemeyni, Fatemah, Owe, Olaf, Johnsen, Einar Broch, Balasingham, Ilangko, Nascimento, Mario A.
Technical report TR12-01. Limited energy supply is a chief concern when dealing with wireless sensor networks (WSNs). Thus, among other issues, routing protocols for WSNs should be designed with the goal of being energy efficient in the first place. For static networks this is already a...