Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"spam detection"”.
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A Spam Transformer Model for SMS Spam Detection
… Message Service (SMS), the increasing number of spam messages has become a serious problem. The need to block spam messages requires us to develop new SMS spam detection technologies. The Transformer, an attention- based sequence to sequence model, has achieved excellent results in multiple …
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An improved framework for content and link-based web spam detection: a combined approach
… search engines (SE) as a tool. However, web spammers misuse the web for financial benefits by ranking the irrelevant and spam web pages higher than relevant pages in the search engine's results pages (SERPs) by using web spamming techniques. Furthermore, those top-ranked unrelated web pages …
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Anomalous Behavior Analysis in Social Networks and Consumer Review Websites
… learn their behaviors, and (2) detecting opinion spam to reduce their effects. We study the behaviors of anomalous users in reviews collected on Yelp, Amazon and social data from Twitter. Using Yelp reviews we explore the temporal behaviors of spammers. Social spammers easily penetrate and are …
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Provable stability defenses for targeted data poisoning
… image classification dataset and the TREC 2007 spam detection dataset that confirms our theoretical findings.
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An email spam filtering proxy using secure authentication and micro-bonds
… email. The innate uncertainty of automatic spam detection creates a tension between the desire to filter 100% of spam, and the need to avoid the loss of legitimate mail. Apuma attempts to solve this problem by combining accept-lists with payment systems and content evaluation. Messages from …
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Performance modeling framework for SLO-driven MapReduce environments
… processing such as personalized advertising, spam detection, and data mining tasks. There is a growing need among MapReduce users to achieve different Service Level Objectives (SLOs). Often, applications need to complete data processing within a certain time deadline. Alternatively, users are …
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Spam Analysis and Detection for User Generated Content in Online Social Networks
… also makes it easy to be polluted andattacked by spammers and malicious users. How users participate in UGCnetworks, especially how users contribute content and share content with theirfriends and other users, is fundamental to spam detection and high qualityknowledge discovery. In this …
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An ensemble-based computational approach for incremental learning in non-stationary environments related to schema- and scaffolding-based human learning
… forgetting prior knowledge, and change/drift detection. The framework is evaluated on a variety of canonical and real-world data streams (weather prediction, electricity price prediction, and spam detection). This study reveals the catastrophic effect of forgetting prior knowledge, supporting …
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Universal outlier hypothesis testing with applications to anomaly detection
… methods. Applied to a real data set for spam detection, the sequential test is shown to outperform the fixed sample size test when the lengths of the sequences exceed a certain value. In addition, the performance of the proposed tests is shown to be superior to that of another …
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Pattern recognition for computer security
Computer Security deals with the detection and mitigation of threats to computer networks, data, and computing hardware. This thesis addresses the following two computer security problems: email spam campaign and malware detection. Email spam campaigns can easily be generated using popular …