User Profile Acquisition Approaches

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There are various types of user profile acquisition approaches, which are classified into five groups: (1) data mining, (2) statistics and network analysis, (3) Information retrieval, (4) machine Learning and (5) Cognitive. Most of the methods are dealing with static Websites except a couple of methods that can be applied on dynamic Websites (Nasraoui & Rojas, 2003).

The method employs data mining techniques such as a frequent pattern and reference mining found from (Holland et al., 2003; KieBling & Kostler, 2002) and (Ivancy & Vajk, 2006). Frequent and reference mining is a heavily research area in data mining with wide range applications for discovering a pattern from Web log data to obtain information about navigational behavior of the users. The frequent and reference patterns from their research can be classified into page sets, page sequences and page graphs.

The used of descriptive statistics to extract knowledge from Web log has been introduced by Srivastava, Deshpende & Phang (2000), by analyzing the session files and perform statistics of user interaction such as frequency, mean, and median on variables i.e. page views, viewing time and length of a navigational path. Additionally, Web logs file analysis using statistical approach proposed by Stermsek et al.(2007) allow for a broader perception of user behavior and potential to improve user profiling. Their approach includes several methods such as statistical inference, graph analysis and profile generation: (1) Statistical inference is from pre-processed web log data, (2) structure analysis for selecting a certain structure on the website (e.g., soccer news), then perform structure of the Website related to user’s interest on soccer news and (3) Graph analysis o...

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... of Web Personalization to customize services (e.g. content and items) to the needs and prefer user or group of users. This is clear in the adaptive Web, where acceptance is to meet the needs of users (Agrawal, 1999; Mobasher et.al., 2000).

There are different approaches for representing user profiles. For example, Mobasher et.al. (1999) and Kang et.al. (2001) analyze URLs to get the user’s preference from Web logs. Additionally, Mobasher et.al. (1999) combined Web usage mining and content mining for effective personalization. Shokry and Ajinanth (2006) used clustering techniques to obtain user’s preference.

From literature review, the method of representing UP can be classified in three methods: (1) graph representation, (2) tree, (3) XML, and (4) RDF. The following briefly described method of UP representation in Web personalization, as presents in Table 8.

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