Privacy-Preserving Classification of Data Streams

[[abstract]]Data mining is the information technology that extracts valuable knowledge from large amounts of data. Due to the emergence of data streams as a new type of data, data streams mining has recently become a very important and popular research issue. There have been many studies proposing efficient mining algorithms for data streams. On the other hand, data mining can cause a great threat to data privacy. Privacy-preserving data mining hence has also been studied. In this paper, we propose a method for privacy-preserving classification of data streams, called the PCDS method, which extends the process of data streams classification to achieve privacy preservation. The PCDS method is divided into two stages, which are data streams preprocessing and data streams mining, respectively. The stage of data streams preprocessing uses the data splitting and perturbation algorithm to perturb confidential data. Users can flexibly adjust the data attributes to be perturbed according to the security need. Therefore, threats and risks from releasing data can be effectively reduced. The stage of data streams mining uses the weighted average sliding window algorithm to mine perturbed data streams. When the classification error rate exceeds a predetermined threshold value, the classification model is reconstructed to maintain classification accuracy. Experimental results show that the PCDS method not only can preserve data privacy but also can mine data streams accurately.[[notice]]補正完畢[[incitationindex]]EI[[booktype]]紙

Performance Evaluation of Anonymized Data Stream Classifiers

Data stream is a continuous and changing sequence of data that continuously arrive at a system to store or process. It is vital to find out useful information from large enormous amount of data streams generated from different applications viz. organization record, call center record, sensor data, network traffic, web searches etc. Privacy preserving data mining techniques allow generation of data for mining and preserve the private information of the individuals. In this paper, classification algorithms were applied on original data set as well as privacy preserved data set. Results were compared to evaluate the performance of various classification algorithms on the data streams that had been privacy preserved using anonymization techniques. The paper proposes an effective approach for classification of anonymized data streams. Intensive experiments were performed using appropriate data mining and anonymization tools. Experimental result shows that the proposed approach improves accuracy of classification and increases the utility, i.e. accuracy of classification while minimizing the mean absolute error. The proposed work presents the anonymization technique effective in terms of information loss and the classifiers efficient in terms of response time anddata usability

Combining SOA and BPM Technologies for Cross-System Process Automation

This paper summarizes the results of an industry case study that introduced a cross-system business process automation solution based on a combination of SOA and BPM standard technologies (i.e., BPMN, BPEL, WSDL). Besides discussing major weaknesses of the existing, custom-built, solution and comparing them against experiences with the developed prototype, the paper presents a course of action for transforming the current solution into the proposed solution. This includes a general approach, consisting of four distinct steps, as well as specific action items that are to be performed for every step. The discussion also covers language and tool support and challenges arising from the transformation