Departmental Conferences

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Browsing Departmental Conferences by Faculty "IT"

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    AIEPmora an NLP Knowledge Representation and Retrieval Platform
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) Maha Arachchi, AI; Attanayake, AMSSAUB; Phillips, GLL; Vithanagama, S; Nanayakkara, V; Gunasinghe, UP
    This paper discusses AIEPmora; a natural language processing system designed to maintain a conversation with a human user. The architecture is much similar to an automated chat bots with several overhauls to integrate vary ing knowledge bases. The system is designed to consume plain text so that knowledge can be added without worrying about its structure or organization. It does not require link to be present in the text and can manage various type of wh questions plus human like expressions like “hi” , “good morning”. This paper presents a high level architecture of AIEPmora and how its component integrates to create a human like chat bot.
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    A faster image registration and stitching algorithm
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) Senarathne, N; Ransiri, S; Balasooriya, A; Arangala, P; De Silva, CR; Nanayakkara, V; Gunasinghe, UP
    This paper presents a new algorithm for Image Registration and Stitching. The algorithm is designed to be extremely efficient and fast in its execution and is intended for use in stitching images extracted from a video stream of a camera. This algorithm is not universally applicable to all the image registration and stitching problems. It is customized to be used to generate single images of surfaces such as a conveyor belt or undercarriage of vehicles, which cannot be captured by a single photo. The algorithm works by extracting edges of the two images to be registered. Then it selects a reference section from the first image and search in the second image where it finds the best match for that section. The best match is the least difference score. The section in the second image which gives the least difference score is then identified as the registration point between the two images. The speed of the algorithm is improved by using heuristics to restrict the search space in the second image. We present full details of how the extraction of the heuristic is done from the inputs and how it drastically reduces the execution time of the algorithm. The implementation of the algorithm was done in MATLAB and the details of the MATLAB functions are listed in the paper. The paper also contains a full section on comparing our algorithm with a set of existing algorithms. Our algorithm outperforms the existing ones for all the common image sizes.
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    Impacts oflatest developments in mobile communications on Socioeconomicsystem in Sri Lanka
    (2014-12-10) Dharmakeerthy, EG
    This study was undertaken to evaluate variables that contribute to the full satisfaction of mobile phone users (customers) by analyzing business management models used by present service providing companies (operators) in Sri Lanka and study on the impact of latest developments of mobile communication industry on the socioeconomic system in Sri Lanka. OchenShiller at e. argues that mobile communications industry is still under-researched here he refers to technical and engineering research and on value added services to the customer, and therefore this research is particularly important because it focuses on mobile phone user satisfaction in depth( specially in the socio-economic and demography perspective) as opposed to customer satisfaction in general. According to Teye and leclerk (1998) satisfaction is vital for ensuring sustainability of the industry. It is argued that operators should offer exceptional and satisfying products and services taking socioeconomic and demographic data into consideration seriously in strategic business plan modeling. It was found when learning of present models.
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    Multi agent system for energy management
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) Fernando, WDN; Kodikara, KDDL; Piyasena, TTS; Randana, GAR; Wimelawame, KADNK; Nanayakkara, V; Gunasinghe, UP
    Multi Agent Systems is an evolving field of Computer Science which is yet to be explored and widely being explored due to its fascinating capabilities. On the other hands, Electrical energy is one of the most widely used sources of energy in the world today. Its uses are highly diverse ranging from the high speed railways of France to the common everyday heaters. Thus, it becomes more than a need to utilize it in an efficient and economic manner. Despite its heavy usage, we can find pattern in the domestic usage of electricity where extreme high usages occur for short durations. Our attempt is a combination of the above two topics where we try to use a Multi Agent Network to manage the electrical appliances in such a way that the high peaks are flattened out through the time which brings many economic benefits. This document clearly indicates our approach and how we integrated the above systems to attain the desired goal. We are highly grateful for the effort and commitment by Maheendra Piraveenan* in helping us throughout the project in giving us advice and guidance regarding all issues.
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    Optimizing web services security processing models
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) Suriarachchi, IE; Mihindukulasooriya, NS; Nanayakkara, V; Gunasinghe, UP
    Security is a major concern of today’s enterprise web services due to its message oriented nature. Web services messages containing confidential information can be transmitted on unsecured networks thus should have proper mechanisms to protect them possible attacks. To cater those requirements, Web Services Security specification defines enhancements to SOAP messaging providing authentication, message integrity and confidentiality without losing the interoperability. Security requirements and capabilities of web services are expressed using Security Policy language. Thus security policy processing plays a vital role in any web service security engine. Security processing model should be efficient and invincible to possible attacks. In this paper, we evaluate the current web service security processing models and discuss their weaknesses. We propose an improved security processing model for web services security which is more efficient and less vulnerable to attacks such as denial of service attacks.
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    Proceedings of the CS&ES Conference 2009 [Pre Text]
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) Nanayakkara, V; Gunasinghe, UP
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    Programmatic implementation of the karmarkar’s algorithm for vacation package synthesis process optimization
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) Ganepola, H; Padukka, J; Prasad, R; Samarakoon, L; Wimalawame, K; Nanayakkara, V; Gunasinghe, UP
    Vacation Packages are a basic component of the modern travel industry. Putting together a set of vacation packages, which can generate the highest revenue to the tour operator, is a hectic task which will need a lot of man hours. In this paper, we present a linear programming approach which ensures the maximum revenue to the tour operator, where all the contract constraints are satisfied. From LP model formulation to the solving algorithm and its results will be presented in this paper. Karmarkar’s Projective Scaling algorithm, which is the solving algorithm will be explained in the process, with its implementation approach
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    Strategic factors enabling effective offshore relationships; a model from the vendor perspective
    (Computer Science & Engineering Society c/o Department of Computer Science and Engineering, University of Moratuwa., 2009-07) De Zoysa, DPM; Gunawardena, ND; Nanayakkara, V; Gunasinghe, UP
    Outsourcing is one of the emerging and most profitable business activities in the global market. It is with that interest this research is focused on identifying strategic factors facilitating effective offshore relationships. The research analyzed the complexities of these factors using a hybrid research methodology (mainly qualitative and use of quantitative techniques) and resulted factors are categorized into primary and supportive strategic factors. The primary factors include; professional values, strategic drives, supply & delivery management, service marketing capabilities, valuecreation approaches, innovation management, client segmentation & alignment, personal relationships, dealing with management theories, and sustainable development. The supportive factors are; business nature, planning & control, knowledge management, CSF offshore effectiveness, team PEST factors, risk awareness, management, governance, awareness, and Sri Lankan offer/branding. These factors are then used to craft an effective offshore relationship model while introducing Offshore Relationship Index followed by 3-Step policy undertaking process to support strategic offshore relationship management.