• Proceedings of the Korea Information Processing Society Conference
• /
• 2011.11a
• /
• pp.1234-1237
• /
• 2011

본 논문은 시맨틱 기술을 활용한 OpenAPI 조합가능 서비스 검색 기법 개발을 위해 관련 연구들을 분석하여 적용방안을 도출하였다. OpenAPI 조합가능 서비스 검색이란 선택된 서비스의 출력과 매칭이 되는 입력을 가진 서비스나 선택된 서비스의 입력과 매칭되는 출력을 가진 서비스를 찾는 것이다. 본 논문에서는 기존의 키워드 기반의 조합 가능 서비스 검색 기법의 한계를 시맨틱 기술을 활용하여 해결하기 위한 관련연구로 SAWSDL-MX2와 LOG4SWS.KOM에 관한 논문들을 분석했다. SAWSDL-MX2에서는 세가지 매칭 기법과 이에 따른 유사도 분석 기법을 제시하였고, LOG4SWS.KOM에서는 두가지 매칭 기법과 이에 따른 유사도 분석 방법을 제시하였다. 관련 연구들에서 분석된 내용을 바탕으로 OpenAPI 조합 가능 서비스에 대한 매칭 기법의 정의, 유사도 분석 기법의 정의가 추후 진행되어야 한다.

• International journal of advanced smart convergence
• /
• v.11 no.1
• /
• pp.11-18
• /
• 2022

Securities and investment services have and use large data. Investors started to invest through their own analysis methods. There are 22 major securities and investment companies in Korea and only 6 companies support open API. Python is effective for requesting and receiving, analyzing text data from open API. Daishin Securities Co. is the only open API that officially supports Python, and eBest Investment & Securities Co. unofficially supports Python. There are two important differences between CYBOS plus of Daishin Securities Co. and xingAPI of eBest Investment & Securities Co. First, we must log in to CYBOS plus to access the server of Daishin Securities Co. And the python program does not require a logon. However, to receive data using xingAPI, users log on in an individual Python program. Second, CYBOS plus receives data in a Request/Reply method, and zingAPI receives data through events. It can be thought that these points will show a difference in response time. Response time is important to users who use open APIs. Data were measured from August 5, 2021, to February 3, 2022. For each measurement, 15 repeated measurements were taken to obtain 420 measurements. To increase the accuracy of the study, both APIs were measured alternately under same conditions. A paired t-test was performed to test the hypothesis that the null hypothesis is there was no difference in means. The p-value is 0.2961, we do not reject null hypothesis. Therefore, we can see that there is no significant difference between means. From the boxplot, we can see that the distribution of the response time of eBest is more spread out than that of Cybos, and the position of the center is slightly lower. CYBOS plus has no restrictions on Python programming, but xingAPI has some limits because it indirectly supports Python programming. For example, there is a limit to receiving more than one current price.

• Proceedings of the Korean Information Science Society Conference
• /
• 2004.10c
• /
• pp.388-390
• /
• 2004

통신환경이 개방형 네트워크로 새로운 통신네트워크의 변화를 가져오게 되면서 third-party업체들이 애플리케이션을 제공할 수 있게 되었다. 이런 광대역통합망의 서비스 제공을 위하여 third-party에게 Open API를 통하여 하부 전달망 특성을 개방한다. Parlay API는 대표적인 Open API이며 Parlay API와 웹 서비스를 접목시키고 한 단계 더 추상화한 Parlay X API가 있다. Parlay X API는 웹 서비스의 장점을 가지고 있지만 QoS제공을 위한 방법이 제시되어 있지 않다. 본 논문에서는 Messaging Sever를 추가하여 QoS를 제공하기위한 방법에 대하여 제시한다.

• 한국정보통신설비학회:학술대회논문집
• /
• 2008.08a
• /
• pp.521-524
• /
• 2008

기존 지능망 서비스들이 포화 상태에 이르게 됨에 따라 수익이 나는 새로운 서비스를 개발하는 것이 점점 더 어려워지고 있다. 요즈음 전통적인 전화망과 인터넷의 결합이 새로운 경향으로 나타나고 있다. PC와 같은 인터넷 단말은 전화망의 전통적인 단말보다 저장 장치 및 유저 인터페이스 면에서 더욱 더 강력한 능력을 가지고 있다. IT 개발자들은 전화 분야의 전문 지식을 갖고 있지 않아도 Parlay API를 사용하면 새로운 통신 서비스를 쉽게 만들수 있다. HTTP 상의 SOAP을 사용하여 쉽게 두 컴퓨터 노드간의 통신이 가능하게 할 수 있더라도 일반적인 개발자는 현란한 XML 포맷 때문에 SOAP 메시지를 처리하는데 어려움을 느낀다. REST 기반 API는 이러한 것의 좋은 대체재가 될 수 있는데, 추가적인 프로토콜 층이 없이 HTTP 층만 있기 때문이다. 본 논문에서는 통화 및 메시징 서비스를 만들기 위한 REST 기반의 Open APl 를 소개한다. 제안되는 API는 클릭투콜, 미니 컨퍼런스, 통화 녹음, 주문형 오디오 재생, 단문 메시징 및 음성 메시징 기능을 제공한다. 제안되는 API 특징은 전화망과 인터넷의 컨버전스의 강력함을 보여준다.

• KIPS Transactions on Computer and Communication Systems
• /
• v.6 no.4
• /
• pp.169-178
• /
• 2017

Recently, as the interest rate and necessity for security is growing, the demands for a visitor recognition system are being increased. In order to recognize a visitor in visitor recognition systems, the various biometric methods are used. In this paper, we propose a visitor recognition system based on face recognition. The visitor recognition system improves the face recognition performance by integrating several open APIs as a single algorithm and by performing the ensemble of the recognition results. For the performance evaluation, we collected the face data for about five months and measured the performance of the visitor recognition system. As the results of the performance measurement, the visitor recognition system shows a higher face recognition rate than using a single face recognition API, meeting the requirements on performance.

• Journal of Digital Convergence
• /
• v.9 no.2
• /
• pp.131-140
• /
• 2011

As the recent advances in network and wireless communications and semiconductor design and process technologies, our computing platform is rapidly shifting from desktop PCs to mobile devices such as UMPC (Ultra Mobile PC), Tablet PC, and Smartphone. Especially, wide-spreading Smartphones allow a new field of application based on location based services available with an user interface called augmented reality (AR). Therefore, this paper introduces an implementation of AR using various OpenAPls on Android Smartphones. In order to utilize enrich user data in real time, the system integrates with location based social network services also with OpenAPI. These APIs enable third-party developers to make use of rich contents of many portal web sites. The prototype was implemented on the real Android phone, Sky Sirius, and the result shows that it can provide an efficient location based service using AR technology without any constraints on mobile devices; in addition, it connects SNS to AR for sharing user data including photos, videos, and messages based on a specific location.

• The KIPS Transactions:PartC
• /
• v.12C no.6 s.102
• /
• pp.773-780
• /
• 2005

Recently, the telecommunication network is in a transition toward the BcN (Broadband convergence Networks) that integrates the Internet, the telecommunication and the broadcasting. The BcN makes it possible to provide of 4he third-party application by using the Open API The Parlay X API is an example of the Open API and the Parlay X API is grafted in the Web Service and is abstracted from the Parlay API. So, the Parlay X API does not only have advantages of a Web Service, but also disadvantages of the Web Service. The main disadvantage of the Web Service is that it does not support the any QoS mechanism. In this paper, we propose the architecture that solves the reliability among the QoS issues for the Web Service. The proposed mechanism adopts the Asynchronous architecture for the reliable Web Service and improves the performance of the retransmission between the client and the server using the expected response time. We perform the performance evaluation through the simulation in older to compare with the existing mechanism. Consequently, we can confirm that the performance of the proposed mechanism performs better than the existing mechanism.

• Journal of the Korea Society of Computer and Information
• /
• v.17 no.5
• /
• pp.93-101
• /
• 2012

In the field of urban planning and disaster prevention, various geographical information systems (GIS) and design softwares have been in use. Recently urban planners and disaster managing officials face new challenges, as three dimensional GIS, web environment, and smart phone app are rapidly developed. Technical progress in open API and mashup opens a possibility of making the citizen participation-based smart phone applications in the field of urban planning and disaster prevention. Our suggested smart phone applications will have technical, economic, and administrative impacts on the society in general; and play an effective role in developing U-City, U-health, and disaster prevention.

• Proceedings of the Korea Information Processing Society Conference
• /
• 2012.04a
• /
• pp.91-93
• /
• 2012

Open API는 기존 웹 서비스를 결합하여 새로운 서비스를 개발하는 최신의 방법이다. 본 논문에서는 RESTful 웹 서비스를 Open APT화 하여 그것을 이용한 모니터링 시스템 개발을 보인다. 본문의 개발 방법을 이용하는 경우 모니터링 시스템의 통합을 손쉽게 해결할 수 있으며, 차후 다른 시스템에 쉽게 결합시킬 수 있는 장점이 있다. 또한 축소된 호출 메시지 크기료 인해 서비스 제공 속도와 네트워크 대역 사용량에도 이점이 있다.

• Proceedings of the Korean Institute of Information and Commucation Sciences Conference
• /
• 2021.10a
• /
• pp.388-390
• /
• 2021

This paper introduces a system that can help visually impaired people to board a bus using an embedded board with keypad, dot matrix, lidar sensor, NFC reader, a public data portal Open API system, and deep learning algorithm (YOLOv5). The user inputs the desired bus number through the NFC reader and keypad, and then obtains the location and expected arrival time information of the bus through the Open API real-time data through the voice output entered into the system. In addition, by displaying the bus number as the dot matrix, it can help the bus driver to wait for the visually impaired, and at the same time, a deep learning algorithm (YOLOv5) recognizes the bus number that stops in real time and detects the distance to the bus with a distance detection sensor such as lidar sensor.