Showing all 4 Tech Reports linked to Nikolaos Nanas

Nootropia: a Self-Organising Agent for Adaptive Document Filtering

This paper presents Nootropia, a self-organising information agent, capable of evaluating documents according to a user's multiple and changing interests. In Nootropia, a hierarchical term network that takes into account term dependencies is used to represent a user's multiple topics of interest. Non-linear document evaluation is established on that network based on a directed spreading activation model. We then introduce a process for adjusting the network in response to changes in user...read more

ID: kmi-04-02

Date: 2004

Author(s): Nikolaos Nanas, Victoria Uren, Anne de Roeck, John Domingue

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A Comparative Study of Term Weighting Methods for Information Filtering

The users of an information filtering system can only be expected to provide a small amount of information to initialize their user profile. Therefore, term weighting methods for information filtering have somewhat different requirements to those for information retrieval and text categorization. We present a comparative evaluation of term weighting methods, including one novel method, relative document frequency, designed specifically for information filtering. The best weighting methods...read more

ID: kmi-03-04

Date: 2003

Author(s): Nikolaos Nanas, Victoria Uren, Anne De Roeck

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Research Proposal: An Adaptive, Evolutionary User Profile for Knowledge Management.

In order to provide the knowledge worker with potentially useful information, we propose an architecture for the development of an adaptive, evolutionary user profile. The profile has the ability to adapt to modest, frequent changes to the individual's information needs and in addition to evolve, in order to adjust to more radical but less frequent changes. In order to descrive the architecture, we discuss the profile's initialization, its evolutionary mechanism, the way it evaluates documents...read more

ID: kmi-01-17

Date: 2001

Author(s): Nikolaos Nanas

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Literature Review: Information Filtering for Knowledge Management

It is already realized that we have entered the knowledge era: A time when the economic value of knowledge has become greater than the value of physical products. In this context, Knowledge Management (KM), i.e. the combination of management principles and technology that seeks to improve the performance of individuals and organizations by maintaining and leveraging the value of knowledge assets, has emerged into a managerial megatrend. We present the foundational concepts of Knowledge...read more

ID: kmi-01-16

Date: 2001

Author(s): Nikolaos Nanas

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Research Asst / Assoc for Blockchain Learning Verification

Knowledge Media Institute (KMi)
29,799 - 38,833 (Grade AC1 / AC2)
Based in Milton Keynes
Temporary contract for 18 months

The Knowledge Media Institute (KMi) is a distinct research unit within the Faculty of Science, Technology, Engineering and Mathematics (STEM) at the Open University. KMi is looking for a Research Assistant or a Research Associate to work on the IoC project & how blockchains can be used to store student accreditation and lifelong learning records in order to enhance employability. The Open University leads the IoC's first theme on university learning, which aims to influence computer science...

Research Asst / Assoc for Mainstreaming Learning Analytics

Knowledge Media Institute (KMi)
29,799 - 38,833 (Grade AC1 / AC2)
Based in Milton Keynes
Temporary contract until 31st March 2021

The Knowledge Media Institute (KMi) is a distinct research unit within the Faculty of Science, Technology, Engineering and Mathematics (STEM) at the Open University. KMi is looking for a Research Assistant or a Research Associate to work on the IoC project & how we can adapt, deploy and mainstream our learning analytics tool across a number of educational establishments nationally. The Open University leads the IoC's first theme on university learning, which aims to influence computer...

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