Browsing by Author "Alemu, Worku (PhD)"

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    The Automatic Extraction of Bibliographic Information from Locally Published Journals in Ethiopia: A Feasibility of Ocr
    (Addis Ababa University, 2000-05) Ytfru, Enchalew; Birro, Getachew (PhD); Alemu, Worku (PhD)
    Research and development communities use journals as mechanisms of communications among themselves. As the size of research output increases idiom time to time, however, it was impossible to access each and every report that appeared in journals. Therefore, journal articles have to be indexed to facilitate access and control. The activity of indexing has to be systematic, so that research outputs remain accessible to the scientific collinearity. To achieve this lofty goal, indexing has to be made on regional/national basis to serve as part of the universal bibliographic control of journals. For document analysis, two levels of segmentation are used. The first level segmentation divides an input text into four zones (first text zone -- consisting of journal title, voluble, issue number, year and page range --, article title, author (s) and author abstract) using white line spacing as the end of a text zone. The second level segmentation degenerates the contents of the first text Holley ill to journal title, voluble, all issue lumber, year ally page range. The results of the two level segmentation algorithms are then considered for field classification (document understanding). Classification of fields is made based on geometric and non geometric features. The geometric feature zone order is lased to label article title, author (s) and author abstract. all the other hand the non-geometric features (different punctuation marks consisting of comma, colon, braces, etc.) serves to label the fields in the first text zone as journal title, volume, issue number, year, and page doing. The system is 85.57 % successful in correctly segmenting and labeling bibliographic fields. The recognized fields are converted to ISO 2709 format to export into Misfortune Windows.
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    Handwritten Amharic text Recognition Applied to the Processing of Bank Cheques
    (Addis Ababa University, 2000-05) Tadesse, Nigussie; Alemayehll, Nega (PhD); Alemu, Worku (PhD)
    The advent and wide application of Information Technology (IT) has brought changes on the way we perform things. One area where IT particularly computers has showed significant improvement in efficiency and effectiveness of activities is by handling routine, repetitive, boring and error prone tasks. Among such tasks bank check reading is the one that can be handled by computers in a stable manner using the OCR technology. In this piece of work an attempt was made to adopt a recognition algorithm for handwritten Amharic text. To achieve this target some preprocessing. segmentation and normalization techniques implemented for other scripts were reviewed. The Feature oj hand printed Amharic text in general and hand printed legal amounts in particular were studied. Based on the identified Features some of the preprocessing. segmentation and normalization algorithms were implemented and tested on a set of hand printed data collected using sample checks. In addition, different feed forward neural networks with back-propagation learning algorithm were implemented and the test results as well as the procedure of the test are recorded. Finally recommendations are forwarded pointing out some points for further consideration.
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    Optical Character Recognition of Typewritten Amharic Text
    (Addis Ababa University, 1999-05) Teferi, Dereje; Fissaha, Sisay (PhD); Alemu, Worku (PhD)
    Optical Character Recognition is an area of research where a system is made to accept a document image and convert it into ASCII code so that it will be easy for storage, retrieval, and filterer processing. OCR helps to convert a bulk of information available on paper to electronically processable format without human intervention -- saving time, money, and labor Recently Optical Character Recognition for the Amharic Script has become an area of research interest. Some developments have been made in recognizing characters with specific type style, font, and font size. All the trials in this regard are on very high quality laser printouts on white papers. In reality, however, most Amharic typewritten documents that need to be converted into machine-readable format are typewritten and on non-white paper III this study an attempt is made to explore the possibilities of developing an OCR system for typewritten Amharic text. To this end, features of the typewritten Amharic characters are thoroughly studied. Some algorithms for noise removal and segmentation are reviewed. These algorithms are implemented to see their performance on typewritten Amharic text. Previous algorithm implemented for recognition of Amharic characters is modified to incorporate the specific features of typewritten Amharic characters. The segmentation and the noise removal algorithms are integrated with this algorithm. The result is tested on typewritten Amharic documents, and test results are presented. Recommendations are also drawn to point out issues to be investigated filterer for the development of typewritten Amharic OCR system with better performance.
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    Promoting the Investment Information Services of the Ethiopian Investment Authority:
    (Addis Ababa University, 1999-05) Atnafu, Asmamaw; Birru, Getachew (PhD); Alemu, Worku (PhD)
    Investment is one of the mechanisms by which countries can move to a higher economic, technological and better way of life. More specifically, investment particularly, the private one contributes a lot in developing the national market, creating wide employment opportunities for the nation, maximizing the i'?flow offoreign capital, accelerating t~e transfer and adoption of needed foreign technology and know-how, saving and generating foreign exchange through import substitution, production or export promotion strategies and in bringing a strong intersectorallinks. Due to these advantages countries place increasing emphasis to attract private investors to make them involved in their economy. Infacilitating this, particularly to attract foreign investors host countries promote the investment opportunities and their resource potential by providing accurate, relevant and timely information. As one of these host countries, Ethiopia is encouraging the private sector participation in all spheres of economic activities. Particularly, to attract foreign investors, the government has setup the Ethiopian Investment Authority (EJA) to_ promote, co-ordinate, and follow-up and '!!-onitor investment proposals. Though the government, in order to increase the participation of private investors, has created favorable conditions in terms of investment policies, procedures, incentives, guarantees and others, the number of projects and the initial investment capital is still not as much as expected. The number offoreign investment projects that started operations are inSignificant, which is less than two percent of the total. In this study, the information needs of investors, the role of investment information promotion to increase the inflow of foreign capital, investment information promotion planning process, strategies of investment information promotional programs and the role of information technology for investment information promotion have been discussed. The study has also assessed the information needs of invest!!rs, the existing investment promotional mechanisms used to attract foreign investors and, the problems in promoting the investment information to foreign investors. Based on the assessment made, the information handling and investment information promotion activity of the EIA is found to be inadequate. The study has also concluded that this inadequate service can be taken as a constraint for the inflow of foreign investment. In order to alleviate the problems sited, the study has recommended measures that must be taken by the EIA. It also demonstrates how to promote investment information on the World Wide Web by developing the Web site of the Ethiopian Investment Authority.