• 제목/요약/키워드: Wired Internet Service

검색결과 133건 처리시간 0.02초

VoIP와 음석인식에 기반한 통합솔루션 서비스 동향 (The Trend of Integrated Solution Service Based on VoIP and Voice Recognition)

  • 오재삼;윤용근
    • 한국IT서비스학회지
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    • 제1권1호
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    • pp.57-66
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    • 2002
  • 지금까지 VoIP에 음성인식을 접목했을 때 만들 수 있는 서비스를 동향에 맞춰 살펴보았다. 최근 들어 음성인식 기술을 이용한 서비스나 상품들이 홍수처럼 쏟아져 나오고 있으며, 이제는 음성인식 기술이 GUI나 일반 DTMF를 이용하는 사용자 인터페이스(User Interfaces)를 대신할 수 있을 정도로 발전되었고 또 앞으로도 지속적인 발전이 있을 것이라 예상되므로 이제 시작된 VoIP와 음성인식의 접목은 수많은 다양한 종류의 새로운 서비스를 창출해낼 것으로 예상된다. 본 논문의 그림들에서 유선전화, 무선전화, 무선 인터넷 등 세 종류의 서비스가 계속 등장한다. 이렇게 세 종류의 서비스를 유지하는 이유는 현재 유무선 전화 및 인터넷 서비스 사업자에 관련되어 각각 다른 비즈니스 모델이 다음과 같이 형성될 수 있기 때문이다. 유선 전화망을 통한 인터넷 서비스는 유선망과 인터넷망을 연동시켜 주는 하드웨어를 개발하는 제조업체와 인터넷 정보를 제공해 주는 정보제공 업자 및 서비스를 제공하는 통신사업자가 협력하여 부를 창출하는 비즈니스 형태이다. 무선 전화망을 통한 인터넷 서비스는 무선 전화 사업자들이 이미 무선 인터넷이라는 이름으로 다양한 정보 제공 서비스를 지속해왔다는 점에서 인터넷 정보를 제공해 주는 정보제공업자 및 무선전 화 사업자 그리고 서비스 제공업자가 협력하여 매 출을 올라는 비즈니스 형태이다. 무선 인터넷 서비스는 일반 인터넷 서비스와의 차이는 없으며, 특별히 이동성을 강조한 서비스를 제공한다면 일반적인 인터넷 기반 정보제공자보다 경쟁력을 가질 수 있다. VoIP는 단독으로 쓰이기보다는 다른 다양한 기술과 서비스와 합쳐졌을 때 그 효과가 커진다. 이 제 음성처리기술, 특히 음성인식기술과 함께 사용되는 VoIP 기술의 응용 범위가 어디까지 확대될지 사뭇 기대되는 바이다.

U-마켓에서의 사용자 정보보호를 위한 매장 추천방법 (A Store Recommendation Procedure in Ubiquitous Market for User Privacy)

  • 김재경;채경희;구자철
    • Asia pacific journal of information systems
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    • 제18권3호
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    • pp.123-145
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    • 2008
  • Recently, as the information communication technology develops, the discussion regarding the ubiquitous environment is occurring in diverse perspectives. Ubiquitous environment is an environment that could transfer data through networks regardless of the physical space, virtual space, time or location. In order to realize the ubiquitous environment, the Pervasive Sensing technology that enables the recognition of users' data without the border between physical and virtual space is required. In addition, the latest and diversified technologies such as Context-Awareness technology are necessary to construct the context around the user by sharing the data accessed through the Pervasive Sensing technology and linkage technology that is to prevent information loss through the wired, wireless networking and database. Especially, Pervasive Sensing technology is taken as an essential technology that enables user oriented services by recognizing the needs of the users even before the users inquire. There are lots of characteristics of ubiquitous environment through the technologies mentioned above such as ubiquity, abundance of data, mutuality, high information density, individualization and customization. Among them, information density directs the accessible amount and quality of the information and it is stored in bulk with ensured quality through Pervasive Sensing technology. Using this, in the companies, the personalized contents(or information) providing became possible for a target customer. Most of all, there are an increasing number of researches with respect to recommender systems that provide what customers need even when the customers do not explicitly ask something for their needs. Recommender systems are well renowned for its affirmative effect that enlarges the selling opportunities and reduces the searching cost of customers since it finds and provides information according to the customers' traits and preference in advance, in a commerce environment. Recommender systems have proved its usability through several methodologies and experiments conducted upon many different fields from the mid-1990s. Most of the researches related with the recommender systems until now take the products or information of internet or mobile context as its object, but there is not enough research concerned with recommending adequate store to customers in a ubiquitous environment. It is possible to track customers' behaviors in a ubiquitous environment, the same way it is implemented in an online market space even when customers are purchasing in an offline marketplace. Unlike existing internet space, in ubiquitous environment, the interest toward the stores is increasing that provides information according to the traffic line of the customers. In other words, the same product can be purchased in several different stores and the preferred store can be different from the customers by personal preference such as traffic line between stores, location, atmosphere, quality, and price. Krulwich(1997) has developed Lifestyle Finder which recommends a product and a store by using the demographical information and purchasing information generated in the internet commerce. Also, Fano(1998) has created a Shopper's Eye which is an information proving system. The information regarding the closest store from the customers' present location is shown when the customer has sent a to-buy list, Sadeh(2003) developed MyCampus that recommends appropriate information and a store in accordance with the schedule saved in a customers' mobile. Moreover, Keegan and O'Hare(2004) came up with EasiShop that provides the suitable tore information including price, after service, and accessibility after analyzing the to-buy list and the current location of customers. However, Krulwich(1997) does not indicate the characteristics of physical space based on the online commerce context and Keegan and O'Hare(2004) only provides information about store related to a product, while Fano(1998) does not fully consider the relationship between the preference toward the stores and the store itself. The most recent research by Sedah(2003), experimented on campus by suggesting recommender systems that reflect situation and preference information besides the characteristics of the physical space. Yet, there is a potential problem since the researches are based on location and preference information of customers which is connected to the invasion of privacy. The primary beginning point of controversy is an invasion of privacy and individual information in a ubiquitous environment according to researches conducted by Al-Muhtadi(2002), Beresford and Stajano(2003), and Ren(2006). Additionally, individuals want to be left anonymous to protect their own personal information, mentioned in Srivastava(2000). Therefore, in this paper, we suggest a methodology to recommend stores in U-market on the basis of ubiquitous environment not using personal information in order to protect individual information and privacy. The main idea behind our suggested methodology is based on Feature Matrices model (FM model, Shahabi and Banaei-Kashani, 2003) that uses clusters of customers' similar transaction data, which is similar to the Collaborative Filtering. However unlike Collaborative Filtering, this methodology overcomes the problems of personal information and privacy since it is not aware of the customer, exactly who they are, The methodology is compared with single trait model(vector model) such as visitor logs, while looking at the actual improvements of the recommendation when the context information is used. It is not easy to find real U-market data, so we experimented with factual data from a real department store with context information. The recommendation procedure of U-market proposed in this paper is divided into four major phases. First phase is collecting and preprocessing data for analysis of shopping patterns of customers. The traits of shopping patterns are expressed as feature matrices of N dimension. On second phase, the similar shopping patterns are grouped into clusters and the representative pattern of each cluster is derived. The distance between shopping patterns is calculated by Projected Pure Euclidean Distance (Shahabi and Banaei-Kashani, 2003). Third phase finds a representative pattern that is similar to a target customer, and at the same time, the shopping information of the customer is traced and saved dynamically. Fourth, the next store is recommended based on the physical distance between stores of representative patterns and the present location of target customer. In this research, we have evaluated the accuracy of recommendation method based on a factual data derived from a department store. There are technological difficulties of tracking on a real-time basis so we extracted purchasing related information and we added on context information on each transaction. As a result, recommendation based on FM model that applies purchasing and context information is more stable and accurate compared to that of vector model. Additionally, we could find more precise recommendation result as more shopping information is accumulated. Realistically, because of the limitation of ubiquitous environment realization, we were not able to reflect on all different kinds of context but more explicit analysis is expected to be attainable in the future after practical system is embodied.

IPv6 이관, IPv6 기반의 OSPFv3 라우팅, IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크: 모델링, 시뮬레이션 (IPv6 Migration, OSPFv3 Routing based on IPv6, and IPv4/IPv6 Dual-Stack Networks and IPv6 Network: Modeling, and Simulation)

  • 김정수
    • 정보처리학회논문지C
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    • 제18C권5호
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    • pp.343-360
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    • 2011
  • 이 논문의 목적은 시뮬레이션 소프트웨어인 OPNET Modeler의 IPv6 Planning and Operations를 이용하여 IPv6 이관, IPv6 기반의 OSPFv3 라우팅 실험, OSPFv3 라우팅에 대한 IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크 Ping 실험을 가상망으로 모델링 후 종단간 라우팅 순환경로 관찰과 Ping 실험을 시뮬레이션하여 그 특성을 분석한 연구이다. 거대한 유무선 통합망을 토대로 한 IPv6 배치는 연구 과제 중 하나이며 이전문헌의 연구자들이 향후 연구로 남겨 놓은 OSPFv3와 EIGRP에 대한 성능 매트릭 분석을 IPv4/IPv6 환경 내에서 수행 계획과 어떻게 하면 종단간 IPv6 성능을 향상할 수 있는지를 탐색할 계획을 들 수 있다. 또한 IPv4 네트워크 상에 연구를 수행했으나 종단간 IPv6 기반의 OSPFv3 가상망 연구 수행은 없었던 점을 들 수 있다. 따라서 우리는 이전문헌의 연구를 이어서 IPv6 이관, IPv6 기반의 OSPFv3 라우팅, IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크에 대한 모델링, 시뮬레이션을 수행하였다. 머지않은 미래에 본격적인 IPv6 활용 이전, IPv6 기반의 가상망을 IPv6 Planning and Operations 이용한 IPv6 이관 여부, 종단간 IPv6 기반의 OSPFv3에 대한 라우팅 순환 경로 탐색, OSPFv3 라우팅에 대한 IPv4/IPv6 듀얼 스택 네트워크와 IPv6 네트워크 Ping 실험으로 앤드유저 관점에 대한 IPv6 망 설계와 배치시 도움을 받을 것이다. 시뮬레이션 결과, 모델링된 종단간 가상망에 대한 최적 경로를 관찰할 수 있었고 인터넷 서비스 품질을 보장하는 VC 서버가 HTTP 서버보다 더 빠른 Ping 응답 시간을 보인 점을 알 수 있었다.