DSpace Repository :: Browsing by Author "Agbele, Kehinde K."

Browsing by Author "Agbele, Kehinde K."

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AGENT-BASED CONTEXT-AWARE HEALTHCARE INFORMATION RETRIEVAL USING DROPT APPROACH
(IJIR International Science Press, 2012-12) Agbele, Kehinde K.; Adesina, Ademola; Daniel, Ekong; Dele, Seluwa
As the volume of information available on the Web information systems is growing continuously, browsing this content becomes a tedious task given the presentation of data that does meet user's aims and needs. In this paper, to satisfy user needs, an agent-based paradigm is an appropriate solution which gives outputs suitable to the user in the form of highly ranked documents. Conversely, patient care and a health condition commonly require collaboration between healthcare providers. The emergence of agent's technology motivates radical changes of how information is obtained. This paper addresses this problem by proposing a novel DROPT (Document Ranking OPTimization) measure for information retrieval results to validate the effectiveness of the information management tasks. We propose information retrieval system architecture, which main components are contextaware agent’s technology to meet users' information needs.
Algorithm for information retrieval optimization
(IEEE, 2016-10-13) Agbele, Kehinde K.; Ayetiran, Eniafe F.; Aruleba, Kehinde D.; Ekong, Daniel O.
When using Information Retrieval (IR) systems, users often present search queries made of ad-hoc keywords. It is then up to the information retrieval systems (IRS) to obtain a precise representation of the user's information need and the context (preferences) of the information. To address this problem, we investigate optimization of IRS to individual information needs in order of relevance. The goal of this article is to develop algorithms that optimize the ranking of documents retrieved from IRS according to user search context. In particular, the ranking task that led the user to engage in information-seeking behaviour during search tasks. This article discusses and describes a Document Ranking Optimization (DROPT) algorithm for IR in an Internet-based or designated databases environment. Conversely, as the volume of information available online and in designated databases is growing continuously, ranking algorithms can play a major role in the context of search results. In this article, a DROPT technique for documents retrieved from a corpus is developed with respect to document index keywords and the query vectors. This is based on calculating the weight (w ij ) of keywords in the document index vector, calculated as a function of the frequency of a keyword k j across a document. The purpose of the DROPT technique is to reflect how human users can judge the context changes in IR result rankings according to information relevance. This article shows that it is possible for the DROPT technique to overcome some of the limitations of existing traditional (tf × idf) algorithms via adaptation. The empirical evaluation using metrics measures on the DROPT technique carried out through human user interaction shows improvement over the traditional relevance feedback technique to demonstrate improving IR effectiveness.
A Context-Adaptive Ranking Model for Effective Information Retrieval System
(International Journal of Information Science, 2018) Agbele, Kehinde K.; Ayetiran, Eniafe; Babalola, Olusola
Abstract When using Information Retrieval (IR) systems, users often present search queries made of ad-hoc keywords. It is then up to information retrieval systems (IRS) to obtain a precise representation of user’s information need, and the context of the information. Context-aware ranking techniques have been constantly used over the past years to improve user interaction in their search activities for improved relevance of retrieved documents. Though, there have been major advances in context-adaptive systems, there is still a lack of technique that models and implements context-adaptive application. The paper addresses this problem using DROPT technique. The DROPT technique ranks individual user information needs according to relevance weights. Our proposed predictive document ranking model is computed as measures of individual user search in their domain of knowledge. The context of a query determines retrieved information relevance. Thus, relevant context aspects should be incorporated in a way that supports the knowledge domain representing users’ interests. We demonstrate the ranking task using metric measures and ANOVA, and argue that it can help an IRS adapted to a user's interaction behaviour, using context to improve the IR effectiveness.
Context-Aware Stemming Algorithm for Semantically Related Root Words
(IEEE, 2012-06) Agbele, Kehinde K.; Adesina, A. O.; Azeez, N. A.; Abidoye, A. P.
There is a growing interest in the use of context-awareness as a technique for developing pervasive computing applications that are flexible and adaptable for users. In this context, however, information retrieval (IR) is often defined in terms of location and delivery of documents to a user to satisfy their information need. In most cases, morphological variants of words have similar semantic interpretations and can be considered as equivalent for the purpose of IR applications. Consequently, document indexing will also be more meaningful if semantically related root words are used instead of stems. The popular Porter’s stemmer was studied with the aim to produce intelligible stems. In this paper, we propose Context-Aware Stemming (CAS) algorithm, which is a modified version of the extensively used Porter’s stemmer. Considering only generated meaningful stemming words as the stemmer output, the results show that the modified algorithm significantly reduces the error rate of Porter’s algorithm from 76.7% to 6.7% without compromising the efficacy of Porter’s algorithm.
A Dependable Model for Attaining Maximum Authentication Security Procedure in a Grid Based Environment
(Trends in Applied Sciences Research, 2012) Agbele, Kehinde K.; Azeez, N. A.; Abidoye, A. P.; Adesina, A. O.
Grid computing is an emergent computing innovation which offers endless access to computing infrastructure across various organizations (academia and industry). Since this technology allows aggregation of various computer systems for usage by different users to run applications, the information stored on it which may be sensitive and private, remains vulnerable. According to related research on the attribute based access control for grid computing there is no adequate and appropriate security mechanism to authorize and authenticate users before accessing information on a grid system. The issue of security in grid technology has not been fully addressed even though it is a precondition for optimizing grid usability. Having realized the paucity of security guarantees, this research work focuses on developing a model for securing data and applications deployed on a grid on the basis of double identity authentication and public key. The implementation of the model has undoubtedly guaranteed the security of sensitive information on a grid vis-a-vis strict adherence to security policies and protocols.
Digital Watermarking: A State-of-the-Art Review
(IST-Africa 2010 Conference Proceedings, 2010) Agbele, Kehinde K.; Adesina, Ademola O.; Nyongesa, Henry O.
Digital watermarking is the art of embedding data, called a watermark, into a multimedia object such that the watermark can be detected or extracted later without impairing the object. Concealment of secret messages inside a natural language, known as steganography, has been in existence as early as the 16th century. However, the increase in electronic/digital information transmission and distribution has resulted in the spread of watermarking from ordinary text to multimedia transmission. In this paper, we review various approaches and methods that have been used to conceal and preserve messages. Examples of real-world applications are also discussed
Engaging ICTs as a “Tool” for eHealth prioritization on human development and poverty reduction in the African region
(Institute of Electrical and Electronics Engineers (IEEE) Inc., 2011) Agbele, Kehinde K.; Adesina, Ademola O.; Ekong, Daniel; Seluwa, Dele
The association connecting information and communication technologies (ICTs) and well-being or poverty remains vague and research today has resulted to divergent conclusions. This paper defines ICTs as “tools” that facilitate communication and the processing and transmission of information and the sharing of knowledge by electronic means. In the African region context, we examine ICTs utilization that aims to improve the provision, access and information management in the health sector. This paper considers access to information as very important benefits that can be achieved in many areas including economic growth, education and healthcare. In healthcare, the roles that ICT plays in ensuring that health information is provided to healthcare providers and consumers to support improving the health of individuals and strengthening health systems, disease detection and prevention are crucial to development and poverty reduction as stated in the UN’s MDGs. For example, access to appropriate information can minimise visits to physicians and periods of hospitalisation for patients suffering from chronic conditions, such as asthma, diabetes, hypertension and HIV/AIDS. This will in turn reduce the cost of healthcare provision. ICTs have the potential to impact almost every aspect of health sector. The paper then proposed how ICTs can be used to reduce poverty and ensure that health information is well administered and reaches the right people, at the right time and in the right form.
Ensuring the security and privacy of information in mobile health-care communication systems
(South African Journal of Science, 2011-09-02) Adesina, Ademola O.; Agbele, Kehinde K.; Februarie, Ronald; Abidoye, Ademola P.; Nyongesa, Henry O.
The sensitivity of health-care information and its accessibility via the Internet and mobile technology systems is a cause for concern in these modern times. The privacy, integrity and confidentiality of a patient’s data are key factors to be considered in the transmission of medical information for use by authorised health-care personnel. Mobile communication has enabled medical consultancy, treatment, drug administration and the provision of laboratory results to take place outside the hospital. With the implementation of electronic patient records and the Internet and Intranets, medical information sharing amongst relevant health-care providers was made possible. But the vital issue in this method of information sharing is security: the patient’s privacy, as well as the confidentiality and integrity of the health-care information system, should not be compromised. We examine various ways of ensuring the security and privacy of a patient’s electronic medical information in order to ensure the integrity and confidentiality of the information.
Evaluating SMS Parsing Using Automated Testing Software
(African Journal of Computing & ICT, 2012-06) Agbele, Kehinde K.; Adesina, A. O; Abidoye, A. P; Azeez, N. A
Mobile phones are ubiquitous with millions of users acquiring them every day for personal, business and social usage or communication. Its enormous pervasiveness has created a great advantage for its use as a technological tool applicable to overcome the challenges of information dissemination regarding burning issues, advertisement, and health related matters. Short message services (SMS), an integral functional part of cell phones, can be turned into a major tool for accessing databases of information on HIV/AIDS as appreciable percentage of the youth embrace the technology. The common features by the users of the unique language are the un-grammatical structure, convenience of spelling, homophony of words and alphanumeric mix up of the arrangement of words. This proves it to be difficult to serve as query in the search engine architecture. In this work SMS query was used for information accessing in Frequently Asked Question FAQ system under a specified medical domain. Finally, when the developed system was measured in terms of proximity to the answer retrieved remarkable results were observed.
Evaluation of Full Text Search Retrieval System
(Nigeria Computer Society, 2015) Aruleba, K. D.; Aremu, D. R.; Oriogun, P. K.; Agbele, Kehinde K.; Agho, A. O.
With a number of search engines on the web and each with different indexing and ranking methods and different coverage, finding the one that gives the best results for a query becomes a bit challenging. The main problem however, that existing Search engines have to deal with is how to avoid irrelevant information and to retrieve the relevant ones. This current work presents a new approach for retrieving relevant information on the Web, by adopting breadth-First search algorithm. The implementation result of the retrieval system was analysed using recall and precision model for three departments at Elizade University. By learning from users’ behaviour, the approach can return very high quality search results, with a strongly reduced computing load.
Introducing a model to improve recent Sub Saharan Africa networked readiness index
(Nigeria Computer Society, 2015-07) Agbele, Kehinde K.; Oriogun, P. K.; Aruleba, K. D.; Agho, A. O.
In this paper we specifically address a number of recent recommendations suggested by The Global Information Technology Reports 2013 - 2015 with respect to Sub-Saharan Africa countries slow progress in developing its ICT infrastructure within the current world of Big Data and ICT for inclusive growth; warning that if care is not taking in terms of improving the framework condition for innovation and entrepreneurship there could be a digital divide between the developed and developing economies. In addressing this possible digital divide, we proffered a solution through a model we developed recently at Elizade University for auditing ICT infrastructure projects in a developing economy. We isolated and fully analyzed the sub-Saharan Africa data from the two reports and present our model in this paper. We argue that the model will address the specific shortcomings of the region in terms of strengthening its ICT infrastructure, and will improve the framework for innovation and entrepreneurship
lCT and Information Security Perspectives in E-Health Systems
(Journal of Mobile Communication, 2010) Agbele, Kehinde K.; Nyongesa, Henry; Adesina, Ademola O.
This study examines issues pertinent to the rapidly evolving use of information as a currency of modem economies. Access to information has important benefits that can be achieved in many areas including, social-economic development, education and healthcare. In healthcare, for example, access to appropriate information can minimize visits to physicians and periods of hospitalization for patients suffering from chronic conditions, such as asthma, diabetes, hypertension and HIV/AIDS. This will in turn reduce the cost of healthcare provision. This study examines theoretical and conceptual aspects of E-health as an lCT application area. Various definitions are presented in order to expound concepts associated with E-health. In the study, the links to a successful chain of trust to manage patient health records for E-health deployment are described. These are based on four technology pillars: identity management, asset management, data storage and information security. Practical solutions for integration of E-health with human, material and financial resources are explored.
A Novel Document Ranking Algorithm That Supports Mobile Healthcare Information Access Effectiveness
(Academic Journals Inc., 2011) Agbele, Kehinde K.; Adesina, Ademola O.; Azeez, Nureni A.; Abidoye, Ademola P.; Febba, Ronald
This study presented DROPT; an acronym for Document ranking Optmization algorithm approach, a new idea for the effectiveness of meaningful retrieval results from the information source. Proposed method extracted the frequency of query keyword terms that appears within the user context of Frequently Asked Questions (FAQ) systems on HIV/AIDS content related-documents. The SMS messages were analyzed and then classified, with the aim of constructing a corpus of SMS related to HIV/AIDS. This study presented a novel framework of Information Retrieval Systems (IRS) based on the proposed algorithm. The developed DROPT procedure was used as an evaluation measure. This “Term Frequency-Inverse Document Frequency (TFIDF)” method was applied to obtain the experimental result that was found promising in ranking documents not only the order in which the relevant documents were retrieved, but also both the terms of the relevant documents in feedback and the terms of the irrelevant documents in feedback might be useful for relevance feedback, especially to define its fitness function (mean weight).
A novel routing algorithm for energy optimization in wireless sensor networks
(Research Journal of Information Technology, 2012) Abidoye, Ademola P.; Azeez, Nureni A.; Adesina, Ademola O.; Agbele, Kehinde K.
Wireless sensor networks (WSNs) have become an interesting area to researchers in recent times due to the low cost of sensor nodes, wide application areas and with low or no cost of maintenance after deployment in a target area. Sensor nodes are expected to remain in operation for a longer time without human intervention. However, due to the small size and cost of these nodes, they have been equipped with small batteries with limited energy source. This has been a major constraint to WSNs, since in most cases sensor nodes are deployed in large number where it may be difficult or impossible to replace the batteries of each node when they run out of supplying power. In this study, a novel Routing Algorithm for Energy Optimization in WSNs (RAEO) has been proposed to reduce communication distance among the nodes by transmitting sensed data through the shortest path from source node to the base station along the neighbouring nodes. The simulation results show that our approach reduces energy consumption during data transmission and increases networks lifetime compared with MECN and SPIN protocols. Finally, the proposed algorithm reduces protocol propagation delay and packets loss during data transmission.
Peer-to-Peer Computing and Grid Computing: Towards a Better Understanding.
(The Pacific Journal of Science and Technology, 2011-05) Agbele, Kehinde K.; Azeez, N. A.; Abidoye, A. P.; Adesina, A. O.; Tiko, Iyamu; Venter, I. M.
Currently, both Peer-to-Peer Computing (P2P) and Grid Computing have remained the most vibrant and useful forms of distributed computing all over the world. Their applications are such that they cut across both academia and industry. It has come to the notice of researchers that there are great misunderstanding and misinterpretation on what these forms of distributed computing actually portend and stand for. In this paper therefore, we take a critical look at comparative study of both computing technologies with aim of making readers understand in a clear cut what each really stands for. To have a good comparison, we start by giving a well referenced definition of Grid Computing as well as Peer-toPeer Computing. Also, we used technical issues and general features in our comparison vis-à-vis the architecture, security issue, data movement, application deployment, and operating system requirement. We also considered the strength of both distributed computing system and finally we considered what could be the future of both technologies
A Query-Based SMS Translation in Information Access System
(International Journal of Soft Computing and Engineering (IJSCE), 2011-11) Agbele, Kehinde K.; Adesina, Ademola O.; Nureni, Azeez A.; Abidoye, Ademola P.
Mobile technology has contributed to the evolution of several media of communication such as chats, emails and short message service (SMS) text. This has significantly influenced the traditional standard way of expressing views from letter writing to a high-tech form of expression known as texting language. In this paper we investigated building a mobile information access system based on SMS queries. The difficulties with SMS communication were explored in terms of the informal communication passage and the associated difficulty in searching and retrieving results from an SMS-based web search engine under its non-standardization. The query is a pre-defined phrase-based translated English version of the SMS. The SMS machine tool normalization algorithm (SCORE) was invented for the query to interface with the best ranked and highly optimized results in the search engine. Our results, when compared with a number of open sources SMS translators gave a better and robust performance of translation of the normalized SMS.
Statistical interpretations of the turnaround time values for a scalable 3-tier grid-based computing architecture statistical interpretations of the turnaround time values for a scalable 3-tier grid-based computing architecture
(GESJ: Computer Science and Telecommunications, 2013) Agbele, Kehinde K.; Azeez, N. A.; Abidoye, A. P.; Adesina, A. O.; Venter, I. M.; Oyewole, A. S.
The concept of scalability for the survival and full-scale implementation as well as efficient utilisation of any distributed system, particularly grid computing, cannot be over-emphasised. It is through this security concept that inter-domain and intra-domain resource sharing, distribution and aggregation can be adequately ensured and guaranteed. This paper is an extension of a paper titled “Towards achieving scalability and interoperability in a triple-domain grid-based environment (3DGBE)” presented at the Information Security for South Africa (ISSA), conference, 2012. The objective of this paper is to provide a comprehensive statistical analysis of the values obtained for the turnaround times for the three domains observed against the number of grid nodes when scalability was being evaluated using ANOVA. Further results obtained also give a summary of the statistical analysis of the values obtained with respects to the three domains vis-à-vis the mean ( , standard deviation and the variance using ANOVA. The essence of the statistical interpretation of these values is to affirm and confirm the significance difference in the mean of group of the three domains considered with respect to variation in the number of grid nodes as well as the number of service requesters as presented.
Sub-Saharan Africa ICTs Infrastructure for Inclusive Growth in the World of Big Data: Towards Addressing the Global Information Technology Report 2014-2015 on the Networked Readiness Index
(Researchgate, 2015-06) Agbele, Kehinde K.; Oriogun, Peter K.; Aruleba, Kehinde D.; Agho, Adrian O.
In this paper we specifically address a number of the recommendations suggested by The Global Information Technology Report 2014 & 2015 (GITR 2014 & GITR 2015) with respect to Sub-Saharan Africa countries slow progress in developing its ICT infrastructure within the current world of Big Data and ICT for inclusive growth; warning that if care is not taking in terms of improving the framework condition for innovation and entrepreneurship there could be a digital divide between the developed and developing economies. In addressing this possible digital divide, we proffered a solution through a model we developed recently at Elizade University for auditing ICT infrastructure projects in a developing economy. We isolated and fully analyzed the Sub-Saharan Africa data from the GITR 2014 report, and present our model in this paper. We argue that the model will address the specific shortcomings of the region in terms of strengthening its ICT infrastructure, and will improve the framework for innovation and entrepreneurship.
Text messaging and retrieval techniques for a mobile health information system
(Journal of information Science, 2014) Agbele, Kehinde K.; Adesina, Ademola O.; Abidoye, Ademola P.; Nyongesa, Henry O.
Mobile phones have been identified as one of the technologies that can be used to overcome the challenges of information dissemination regarding serious diseases. Short message services, a much used function of cell phones, for example, can be turned into a major tool for accessing databases. This paper focuses on the design and development of a short message services-based information access algorithm to carefully screen information on human immunodeficiency virus/acquired immune deficiency syndrome within the context of a frequently asked questions system. However, automating the short message services-based information search and retrieval poses significant challenges because of the inherent noise in its communications. The developed algorithm was used to retrieve the best-ranked question–answer pair. Results were evaluated using three metrics: average precision, recall and computational time. The retrieval efficacy was measured and it was confirmed that there was a significant improvement in the results of the proposed algorithm when compared with similar retrieval algorithms.
Text Messaging: a tool in e-Health Services
(Medwell Journals, 2010) Agbele, Kehinde K.; Adesina, Ademola O.; Nyongesa, Henry O.
HIV/AIDS continues to be a menace to the global community, especially in sub-Saharan Africa and South Africa is not an exception. The infection rate is continues to grow, in particular, among the young adults. Cell phones have been identified as one of the tools that can be used to overcome the challenge of information dissemination regarding HIV/AIDS among young adults because of its acceptability within this age group. Access to appropriate information can be a powerful for prevention and management of many chronic illnesses, including hypertension, diabetes and HIV/AIDS. Within the young adults age group information access by use of Short Messaging Services (SMS) becomes particularly appealing. In this regard, it is proposed to provide access to carefully screened information on HIV/AIDS within the context of frequently asked questions (FAQ) system. However, automating SMS-based information search and retrieval poses significant challenges because of the inherent noise in SMS communications. In the paper, a special corpus of SMS messages was collected based on a standardised question-answer collection. The SMS messages were then analysed, transcribed and classified, with the aim of building a dictionary of SMS-speak to English translations, with reference to HIV/AIDS.

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