V IEEE International Power Electronics Congress Technical Proceedings, CIEP 96, 1996
In induction heating applications, the heating coils may have different types for different loads... more In induction heating applications, the heating coils may have different types for different loads. A suitable control method is often needed to let the power electronic circuit working in most fittable condition to supply power to the load. In this paper, a simple novel control strategy for induction heating is described. The most outstanding advantage of this method is a
Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries - JCDL '05, 2005
Constructing a Chinese digital library, especially for a historical article archiving, is often b... more Constructing a Chinese digital library, especially for a historical article archiving, is often bothered by the small character sets supported by the current computer systems. This paper is aimed at resolving the unencoded character problem with a practical and composite approach for Chinese digital libraries. The proposed approach consists of the glyph expression model, the glyph structure database, and supporting tools. With this approach, the following problems can be resolved. First, the extensibility of Chinese characters can be preserved. Second, it would be as easy to generate, input, display, and search unencoded characters as existing ones. Third, it is compatible with existing encoding schemes that most computers use. This approach has been utilized by organizations and projects in various application domains including archeology, linguistics, ancient texts, calligraphy and paintings, and stone and bronze rubbings. For example, in Academia Sinica, a very large full-text database of ancient texts called Scripta Sinica has been created using this approach. The Union Catalog of National Digital Archives Project (NDAP) dealt with the unencoded characters encountered when merging the metadata of 12 different thematic domains from various organizations. Also, in Bronze Inscriptions Research Team (BIRT) of Academia Sinica, 3,459 Bronze Inscriptions were added, which is very helpful to the education and research in historic linguistics.
In many digital archive programs that store content, like Buddhist documents or Chinese ancient b... more In many digital archive programs that store content, like Buddhist documents or Chinese ancient books, that contain Hanzi characters, the missing character problem is always a serious issue. Although certain solutions have been proposed to solve this problem, when it comes to Web publishing, these solutions do not comprehensively address this issue. This paper focuses on the technical approaches to display, input and search using missing charac- ters on Web interface and use the Intelligent Character System as a example. Using these approaches, we have successfully created a system that solves the missing character problem. The interchangeability and standardization of the diverse approaches to glyph expression is beyond the scope of this paper.
Personal communication service (PCS) networks offer mobile users diverse telecommunication applic... more Personal communication service (PCS) networks offer mobile users diverse telecommunication applications, such as voice, data, and image, with different bandwidth and quality-of-service (QoS) requirements. This paper proposes an analytical model to investigate the performance of an integrated voice/data mobile network with finite data buffer in terms of voice-call blocking probability, data loss probability, and mean data delay. The model is based on the movable-boundary scheme that dynamically adjusts the number of channels for voice and data traffic. With the movable-boundary scheme, the bandwidth can be utilized efficiently while satisfying the QoS requirements for voice and data traffic. Using our model, the impact of hot-spot traffic in the heterogeneous PCS networks, in which the parameters (e.g., number of channels, voice, and data arrival rates) of cells can be varied, can be effectively analyzed. In addition, an iterative algorithm based on our model is proposed to determine the handoff traffic, which computes the system performance in polynomial-bounded time. The analytical model is validated by simulation. He is an Associate Editor of the IEEE TRANSACTIONS ON MULTIMEDIA. His research interests include internet computing, real-time operating systems, real-time networking, real-time multimedia applications, e.g., video conference and video on demand, computational geometry, combinatorial optimization, VLSI design algorithms, and implementation and testing of VLSI algorithms on real designs. He and his team members have developed several system prototypes including a multimedia digital library, ASIS MDL.
The amounts of available resources such as memory buffer and network bandwidth are limited and va... more The amounts of available resources such as memory buffer and network bandwidth are limited and varied for different multimedia systems. When a request is coming, the system needs to decide on request's admission based on available resources for providing guaranteed QoS. Assume that there are m smoothing-servers on the transmission path. Conventional approaches need O(m*n) time, where n is the number of frames, to measure the minimal amounts of resources required. Since n is large, these approaches are not acceptable for real systems that require fast responses. In this paper, an off-line computation scheme is introduced to pre-characterize the function of resource tradeoff for delivery of the requested video. Based on the pre-computed resource tradeoff, system resources required to serve different users can be easily measured by table hashing. This tool can highly reduce the waiting time spent for admission of multimedia applications.
The 2013 International Joint Conference on Neural Networks (IJCNN), 2013
ABSTRACT The purpose of this paper is to develop a method to recommend products to customer via m... more ABSTRACT The purpose of this paper is to develop a method to recommend products to customer via mobile devices. Collaborative recommendation is known as an effective way to recommend products. In this paper, we use the concept of collaborative recommendation to develop Mobile-Oriented Catalog (MOC). The proposed method is made from aggregating similar purchasing records to optimize combination of goods on mobile devices. This paper illustrates how to design attractive and collaborative catalog to recommend items by using Latent Dirichlet Allocation (LDA) based self-adaptive genetic algorithm (LDA-SAGA). LDA-SAGA is consisted of topic modeling concept and self-adaptive genetic algorithm. We use LDA as our topic modeling algorithm to construct MOC as a result that it is the simplest topic model. Our experimental evaluation on synthetic and real data shows that using preference as topic concept is effective. LDA-SAGA is especially outstanding with large number of customers and products. Finally, we compare the MOC which is used on mobile application (APP) of Amazon with the one used on Taobao and discuss the characteristics of their design. Different design of user interface on APP can lead to different scope of fitness value which is capable of explaining different market strategies of Taobao and Amazon.
In this paper, we present our design and implementation of ASIS multimedia digital library. Besid... more In this paper, we present our design and implementation of ASIS multimedia digital library. Besides bibliographic information, our service includes an archive of digital audio and video streams, CD titles, and WWW contents. This system not only aims at end customer supports, e.g., searching, streaming, and browsing operations, but it also facilitates admission control, content production, distribution processes, and license
The video content for on-demand services is generally stored and streamed in a compressed format.... more The video content for on-demand services is generally stored and streamed in a compressed format. The compressed video is naturally with the VBR (variable-bit-rate) property and the stream traffic is highly burst. Subject to the QoS-guaranteed playback, the WAN bandwidth needs to allocate the video's peak bit rate if there is no client buffer for regulating the video delivery (7)(8)(9)(10)(11).
2010 13th IEEE International Conference on Computational Science and Engineering, 2010
This study proposes an emotion detection engine for real time Internet chatting applications. We ... more This study proposes an emotion detection engine for real time Internet chatting applications. We adopt a Web scale text mining approach that automates the categorization of affection state of daily events. We first accumulated a huge collection of real-life entities from Web that would participate in events with a user in the chatting room. Based on the common actions between
V IEEE International Power Electronics Congress Technical Proceedings, CIEP 96, 1996
In induction heating applications, the heating coils may have different types for different loads... more In induction heating applications, the heating coils may have different types for different loads. A suitable control method is often needed to let the power electronic circuit working in most fittable condition to supply power to the load. In this paper, a simple novel control strategy for induction heating is described. The most outstanding advantage of this method is a
Proceedings of the 5th ACM/IEEE-CS joint conference on Digital libraries - JCDL '05, 2005
Constructing a Chinese digital library, especially for a historical article archiving, is often b... more Constructing a Chinese digital library, especially for a historical article archiving, is often bothered by the small character sets supported by the current computer systems. This paper is aimed at resolving the unencoded character problem with a practical and composite approach for Chinese digital libraries. The proposed approach consists of the glyph expression model, the glyph structure database, and supporting tools. With this approach, the following problems can be resolved. First, the extensibility of Chinese characters can be preserved. Second, it would be as easy to generate, input, display, and search unencoded characters as existing ones. Third, it is compatible with existing encoding schemes that most computers use. This approach has been utilized by organizations and projects in various application domains including archeology, linguistics, ancient texts, calligraphy and paintings, and stone and bronze rubbings. For example, in Academia Sinica, a very large full-text database of ancient texts called Scripta Sinica has been created using this approach. The Union Catalog of National Digital Archives Project (NDAP) dealt with the unencoded characters encountered when merging the metadata of 12 different thematic domains from various organizations. Also, in Bronze Inscriptions Research Team (BIRT) of Academia Sinica, 3,459 Bronze Inscriptions were added, which is very helpful to the education and research in historic linguistics.
In many digital archive programs that store content, like Buddhist documents or Chinese ancient b... more In many digital archive programs that store content, like Buddhist documents or Chinese ancient books, that contain Hanzi characters, the missing character problem is always a serious issue. Although certain solutions have been proposed to solve this problem, when it comes to Web publishing, these solutions do not comprehensively address this issue. This paper focuses on the technical approaches to display, input and search using missing charac- ters on Web interface and use the Intelligent Character System as a example. Using these approaches, we have successfully created a system that solves the missing character problem. The interchangeability and standardization of the diverse approaches to glyph expression is beyond the scope of this paper.
Personal communication service (PCS) networks offer mobile users diverse telecommunication applic... more Personal communication service (PCS) networks offer mobile users diverse telecommunication applications, such as voice, data, and image, with different bandwidth and quality-of-service (QoS) requirements. This paper proposes an analytical model to investigate the performance of an integrated voice/data mobile network with finite data buffer in terms of voice-call blocking probability, data loss probability, and mean data delay. The model is based on the movable-boundary scheme that dynamically adjusts the number of channels for voice and data traffic. With the movable-boundary scheme, the bandwidth can be utilized efficiently while satisfying the QoS requirements for voice and data traffic. Using our model, the impact of hot-spot traffic in the heterogeneous PCS networks, in which the parameters (e.g., number of channels, voice, and data arrival rates) of cells can be varied, can be effectively analyzed. In addition, an iterative algorithm based on our model is proposed to determine the handoff traffic, which computes the system performance in polynomial-bounded time. The analytical model is validated by simulation. He is an Associate Editor of the IEEE TRANSACTIONS ON MULTIMEDIA. His research interests include internet computing, real-time operating systems, real-time networking, real-time multimedia applications, e.g., video conference and video on demand, computational geometry, combinatorial optimization, VLSI design algorithms, and implementation and testing of VLSI algorithms on real designs. He and his team members have developed several system prototypes including a multimedia digital library, ASIS MDL.
The amounts of available resources such as memory buffer and network bandwidth are limited and va... more The amounts of available resources such as memory buffer and network bandwidth are limited and varied for different multimedia systems. When a request is coming, the system needs to decide on request's admission based on available resources for providing guaranteed QoS. Assume that there are m smoothing-servers on the transmission path. Conventional approaches need O(m*n) time, where n is the number of frames, to measure the minimal amounts of resources required. Since n is large, these approaches are not acceptable for real systems that require fast responses. In this paper, an off-line computation scheme is introduced to pre-characterize the function of resource tradeoff for delivery of the requested video. Based on the pre-computed resource tradeoff, system resources required to serve different users can be easily measured by table hashing. This tool can highly reduce the waiting time spent for admission of multimedia applications.
The 2013 International Joint Conference on Neural Networks (IJCNN), 2013
ABSTRACT The purpose of this paper is to develop a method to recommend products to customer via m... more ABSTRACT The purpose of this paper is to develop a method to recommend products to customer via mobile devices. Collaborative recommendation is known as an effective way to recommend products. In this paper, we use the concept of collaborative recommendation to develop Mobile-Oriented Catalog (MOC). The proposed method is made from aggregating similar purchasing records to optimize combination of goods on mobile devices. This paper illustrates how to design attractive and collaborative catalog to recommend items by using Latent Dirichlet Allocation (LDA) based self-adaptive genetic algorithm (LDA-SAGA). LDA-SAGA is consisted of topic modeling concept and self-adaptive genetic algorithm. We use LDA as our topic modeling algorithm to construct MOC as a result that it is the simplest topic model. Our experimental evaluation on synthetic and real data shows that using preference as topic concept is effective. LDA-SAGA is especially outstanding with large number of customers and products. Finally, we compare the MOC which is used on mobile application (APP) of Amazon with the one used on Taobao and discuss the characteristics of their design. Different design of user interface on APP can lead to different scope of fitness value which is capable of explaining different market strategies of Taobao and Amazon.
In this paper, we present our design and implementation of ASIS multimedia digital library. Besid... more In this paper, we present our design and implementation of ASIS multimedia digital library. Besides bibliographic information, our service includes an archive of digital audio and video streams, CD titles, and WWW contents. This system not only aims at end customer supports, e.g., searching, streaming, and browsing operations, but it also facilitates admission control, content production, distribution processes, and license
The video content for on-demand services is generally stored and streamed in a compressed format.... more The video content for on-demand services is generally stored and streamed in a compressed format. The compressed video is naturally with the VBR (variable-bit-rate) property and the stream traffic is highly burst. Subject to the QoS-guaranteed playback, the WAN bandwidth needs to allocate the video's peak bit rate if there is no client buffer for regulating the video delivery (7)(8)(9)(10)(11).
2010 13th IEEE International Conference on Computational Science and Engineering, 2010
This study proposes an emotion detection engine for real time Internet chatting applications. We ... more This study proposes an emotion detection engine for real time Internet chatting applications. We adopt a Web scale text mining approach that automates the categorization of affection state of daily events. We first accumulated a huge collection of real-life entities from Web that would participate in events with a user in the chatting room. Based on the common actions between
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