• KIPS Transactions on Software and Data Engineering
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• v.2 no.1
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• pp.71-80
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• 2013

Due to the increased use of mobile devices, there is a lot of discussion on mobile accessibility. Mobile accessibility means that everyone, who includes the disabled, the elderly people, can easily use the functions of mobile devices. In this paper, we presented and implemented a mobile interface using a speech I/O APIs to improve the accessibility. The proposed interfaces are implemented on Android platforms and they used speech recognition and text-to-speech APIs supported as built-in services. In addition, to facilitate the internet access for visually impaired or blind people, we also implemented the web browsing application (web reader).

• Journal of the Korea Convergence Society
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• v.10 no.12
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• pp.71-80
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• 2019

DevOps is a combining which means giving a diverse environments for software development and operations through whole software lifecycle. The key value of the proposed DevOps platform is the fast and stable service capability for a software development and operation environment. To do this, the DevOps gives pre-embedded 7 programming languages-Java, C/C++, Python, PHP, Ruby, Node.js, goLang and 7 service frameworks - Korea eGov Framework, Spring, Struts, Django, Laravel, Rails, Express. With the DevOps platform, it is possible to develop a software and also to build and distribute operation packages directly with the Linux containers. In this paper, the performance evaluation for a compile time, a distribution time and a processing capability is will be also proved. Though the performance evaluation, this paper shows capabilities of the proposed DevOps for Cloud services with commercial service level, prospectively.

• Annual Conference of KIPS
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• 2008.11a
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• pp.527-530
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• 2008

SOA는 최근 급부상한 기술로 발전된 웹서비스 기술과 접목되면서 특히 실시간 기업에게 각광받고 있다. 이에 따라 SOA를 위한 민첩성과 빠른 적응력이 충족되는 구체적인 기법 연구가 많은 진행 중에 있다. 이는 SOA에서의 테스트 역시 마찬가지이며, 본 논문에서는 민첩성과 적응력을 높일 수 있는 SOA를 위한 테스트케이스 생성 기법을 제안한다. SOA는 기존의 컴포넌트 기반의 개발과는 관점의 차이 때문에 절차나 기법의 접근 방법이 다를 수 있다. 따라서 본 논문에서는 SOA의 서비스를 하부 계층인 컴포넌트로 분할하여 기존의 연구를 활용한 후, 다시 서비스 단위로 합성하여 서비스의 테스트케이스를 생성한다. 그리고 제시한 기법을 인터넷 뱅킹 시스템의 계좌잔액조회 서비스에 적용함으로써 서비스 단위의 테스트케이스 생성 사례를 보인다. 제안 기법을 통해 서비스 단위의 테스트를 체계적으로 할 수 있으며, 빠른 릴리즈를 실현하여 SOA의 민첩성과 적응력을 높일 수 있다.

• Proceedings of the Acoustical Society of Korea Conference
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• autumn
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• pp.47-48
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• 2004

최근 음성시장은 VoiceXML 을 이용하여 간단히 시나리오를 작성할 수 있어, 보다 쉽게 다양한 어플리케이션을 개발하여 서비스할 수 있게 되었다. HUVOIS-VAD 는 KT가 자체 개발한 음성인식/합성 플랫폼 시스템인 HUVOIS 에 VXML 을 이용하여 시나리오를 구성한 음성인식/합성 VAD 시스템으로, 사내 및 사외 여러 사이트에 설치 운용 중이다. 특히, Web 을 기반으로 운용시스템을 구축하여 운용자는 어느 곳에서나, 운용 DB를 점검하거나, 인식사전을 구성하고, 운용할 수 있으며, 사용자 또한 개인의 DB 를 직접 관리하도록 하고, 회사의 DB 와 연계하여 개인의 VAD로 동시에 사용할 수 있도록 하고 있다. 본 논문에서는 Web 을 기반으로 구성된 HUVOIS-VAD 시스템에 대하여 기술하고자 한다.

• Journal of Sinology and China Studies
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• v.79
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• pp.81-100
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• 2019

Paradoxically, in the age of video like Youtube, audio books are rapidly growing. Audio books are the result of complex influences such as digital detox trends that try to distance themselves from digital devices in the age of smart devices. The biggest advantage of audio books is that they can read books with "mutitasking" while working or driving, unlike video or text. The audio book market has already become the fastest growing industry in the publishing sector in recent years abroad. Various platforms specializing in audio books are also appearing in South Korea and China. We hope that applying these audio books to Chinese literature education will have many effects. In particular, the addition of Chinese sounds to the Chinese-Korean translation text can dramatically enhance students' accessibility. Also, if the Chinese phonetic synthesis technology is applied to web pages and the text and sound of Chinese literature works are served at the same time, the effect will be maximized. In particular, intelligent voice synthesis during the Fourth Industrial Revolution will be an alternative to overcoming the limitations of mechanical speech synthesis by developing a voice engine using the natural sound of the reader.

• The KIPS Transactions:PartB
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• v.14B no.1 s.111
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• pp.51-58
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• 2007

This paper suggests prototype of dialog system combining VXML(VoiceXML) that is the W3C's standard XML format for specifying interactive voice dialogues between human and computer, and RSS(RDF Site Summary or Really Simple Syndication) that is representative technology of semantic web for syndication and subscription of updated web-contents. Merits of the proposed system are as following: 1) It is a new method that recognize spoken contents using ire and wireless telephone networks and then provide contents to user via STT(Speech-to-Text) and TTS(Text-to-Speech) instead of traditional method using web only. 2) It can apply advantage of RSS that subscription of updated contents is converted to VXML without modifying traditional method to provide RSS service, 3) In terms of users, it can reduce restriction on time-spate in search of contents that is provided by RSS because it uses ire and wireless telephone networks, not internet environment. 4) In terms of information provider, it does not need special component for syndication of the newest contents using speech recognition and synthesis technology. We implemented a news service system using VXML and RSS for performance evaluation of the proposed system. In experiment results, we estimated the response time and the speech recognition rate in subscription and search of actuality contents, and confirmed that the proposed system can provide contents those are provided using RSS Feed.

• Journal of Digital Convergence
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• v.17 no.1
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• pp.123-130
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• 2019

One of the most commonly used methods of web recommendation techniques is collaborative filtering. Many studies on collaborative filtering have suggested ways to improve accuracy. This study proposes a method of movie recommendation using Word2Vec and an ensemble convolutional neural networks. First, in the user, movie, and rating information, construct the user sentences and movie sentences. It inputs user sentences and movie sentences into Word2Vec to obtain user vectors and movie vectors. User vectors are entered into user convolution model and movie vectors are input to movie convolution model. The user and the movie convolution models are linked to a fully connected neural network model. Finally, the output layer of the fully connected neural network outputs forecasts of user movie ratings. Experimentation results showed that the accuracy of the technique proposed in this study accuracy of conventional collaborative filtering techniques was improved compared to those of conventional collaborative filtering technique and the technique using Word2Vec and deep neural networks proposed in a similar study.

• The KIPS Transactions:PartC
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• v.11C no.7 s.96
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• pp.937-950
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• 2004

In this paper, we present the design and implementation of new execution environment named Customizable Architecture for Flexible Execution Environment(CAFEs) that supports the mechanism of protocol customization and service referencing. We introduce a new concept as micro protocols and active services to enhance software reusability. Micro protocol represents a specific algorithm or functionality of existing network protocol and the active service is in charge of binding legacy application and releasing the active network oriented services. The pro-posed active network execution environment is made up of three parts, virtual network system, protocol and service manager, event engine. First, the virtual network system is used to connect each active nodes using virtual network channels which are based on multiple existing protocol layers. Second, the protocol and service manager is responsible for composing micro protocols and active services to develop new network proto-col and service easily. Finally, the event engine is used to detect the automatic transition of system components using event delegation model. To verify the CAFTs, we have an experiment about the delivery of web contents which are suitable for the user's terminals in the wireless Internet environment. As a result. we are able to obtain the availability of developed execution environment.

• 한국HCI학회:학술대회논문집
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• 2009.02a
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• pp.785-790
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• 2009

Widgets are the instrument for representing user's character and embossing the value of blogs. The compound word of the Windows and Gadget the application, widgets are the functional program to displayed on the screen graphical user interface (GUI) tools as a kind of service that user want to see. On the operating system, the Web, and mobile area, widgets offer the delivery of information, convenience and efficiency. However widgets have been never gave satisfaction to user because it focused transmitting information and representing circumstance than fun. This study is for recognized fun elements that user feel interest and categorized fun elements each type of widgets. Fun elements of widget never been defined, we use fun elements on design and product area and emotional word that is representative of affectivity. And we make up an online questionnaire to blog users. The widget selected by popular degree among the domestic widgets and the Japanese widget. And the results of the questionnaire that 5-scales used based on user preferences to identify the elements that are fun.

• Annual Conference on Human and Language Technology
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• 2018.10a
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• pp.367-370
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• 2018

웹 또는 모바일 사용자는 고객 센터에 구축된 자주 묻는 질문을 이용하여 원하는 서비스를 제공받는다. 그러나 자주 묻는 질문은 사용자가 직접 핵심어를 입력하여 검색된 결과 중 필요한 정보를 찾아야 하는 어려움이 있다. 이러한 문제를 해결하기 위해 본 논문에서는 사용자 질의를 입력 받아 질의에 해당하는 클래스를 분류해주는 문장 분류 모델을 제안한다. 제안모델은 웹이나 모바일 환경의 오타나 맞춤법 오류에 대한 강건함을 위해 자소 단위 합성곱 신경망을 사용한다. 그리고 기계 번역 이외에도 자연어 처리 부분에서 큰 성능 향상을 보여주는 주의 집중 방법과 클래스 임베딩을 이용한 문장 분류 시스템을 사용한다. 457개의 클래스 분류와 769개의 클래스 분류에 대한 실험 결과 Micro F1 점수 기준 81.32%, 61.11%의 성능을 보였다.