27551113
Creating a Large-Scale Digital Library for Georeferenced Information
30023273
MedTextus: an intelligent web-based medical meta-search system
We propose to demonstrate a web-based prototype system that integrates the meta-search approach with existing information analysis and visualization technologies to facilitate concept-based searching behavior over the medical domain. The system distinguishes itself from other meta-search engines through two features. It incorporates the co-occurrence analysis and existing ontology to understand user's query. It also utilizes the self-organizing map (SOM) to categorize and visualize search results.
11070478
elpfulMed: Intelligent searching for medical information over the internet
Medical professionals and researchers need information from reputable sources to accomplish their work. Unfortunately, the Web has a large number of documents that are irrelevant to their work, even those documents that purport to be "medically-related." This paper describes an architecture designed to integrate advanced searching and indexing algorithms, an automatic thesaurus, or "concept space," and Kohonen-based Self-Organizing Map (SOM) technologies to provide searchers with fine-grained results. Initial results indicate that these systems provide complementary retrieval functionalities. HelpfulMed not only allows users to search Web pages and other online databases, but also allows them to build searches through the use of an automatic thesaurus and browse a graphical display of medical-related topics. Evaluation results for each of the different components are included. Our spidering algorithm outperformed both breadth-first search and PageRank spiders on a test collection of 100,000 Web pages. The automatically generated thesaurus performed as well as both MeSH and UMLS--systems which require human mediation for currency. Lastly, a variant of the Kohonen SOM was comparable to MeSH terms in perceived cluster precision and significantly better at perceived cluster recall.
12630328
Creating a large-scale content-based airphoto image digital library
This paper describes a content-based image retrieval digital library that supports geographical image retrieval over a testbed of 800 aerial photographs, each 25 megabytes in size. In addition, this paper also introduces a methodology to evaluate the performance of the algorithms in the prototype system. There are two major contributions: we suggest an approach that incorporates various image processing techniques including Gabor filters, image enhancement and image compression, as well as information analysis techniques such as the self-organizing map (SOM) into an effective large-scale geographical image retrieval system. We present two experiments that evaluate the performance of the Gabor-filter-extracted features along with the corresponding similarity measure against that of human perception, addressing the lack of studies in assessing the consistency between an image representation algorithm or an image categorization method and human mental model.
770502
Visualizing the archive of a computer mediated communication process
The archive of computer-mediated communication (CMC) process contains knowledge shared and information about participants' behavior patterns. However, most CMC systems focus only on organizing the content of discussions. We propose to demo a prototype system that integrates a social visualization technique with existing information analysis technologies to graphically summarize both the content and behavior of a CMC process.
14675043
Using 3D interfaces to facilitate the spatial knowledge retrieval: a geo-referenced knowledge repository system
Retrieving knowledge from a knowledge repository includes both the process of finding information of interest and the process of converting incoming information to a person's own knowledge. This paper explores the application of 3D interfaces in supporting the retrieval of spatial knowledge by presenting the development and the evaluation of a geo-referenced knowledge repository system. As computer screen is crowded with high volume of information available, 3D interface becomes a promising candidate to better use the screen space. A 3D interface is also more similar to the 3D terrain surface it represents than its 2D counterpart. However, almost all previous empirical studies did not find any supportive evidence for the application of 3D interface. Realizing that those studies required users to observe the 3D object from a given perspective by providing one static interface, we developed 3D interfaces with interactive animation, which allows users to control how a visual object should be displayed. The empirical study demonstrated that this is a promising approach to facilitate the spatial knowledge retrieval.
46211650
Data hiding for video-in-video
We introduce a scheme for hiding high bit-rate supplementary data, such as secondary video, into a digital video stream by directly modifying the pixels in the video frames. The technique requires no separate channel or bit interleaving to transmit the extra information. The data is invisibly embedded using a perception-based projection and quantization algorithm. The data hiding algorithm supports user-defined levels of accessibility and security. We illustrate our algorithm using examples of real-time video-in-video and speech-in-video. We also demonstrate the robustness of the data hiding procedure to video degradation and distortion, e.g., those that result from additive noise and compression.
9382607
User-interface Design of Web Application Using Object-Z
A notation is presented for formally describing Web application’s design of a user-interface. The function of a Web application is given using formal specification language Object-Z and then some generic classes, relationships and system actions are defined to specify user-interface design. In user-interface design, UAN annotations are added to Object-Z notation. The extended Object-Z notation expresses the presentation relationship between the design and the specification. This formal specification and design is useful in documenting a user-interface design and enables the analysis of the usability and safety of a Web application. In particular, it can be used to generate test cases automatically. An example of student information management system is used to illustrate the notation. Task efficiency is analyzed with the example.
7138915
A novel visualization technique for network anomaly detection
Visualized information is a technique that can encode large amounts of complex interrelated data, being at the same time easily quantified, manipulated, and processed by a human user. Our aim is to develop a novel graphical technique for network traffic visualization that will easily highlight anomalies that can arise within the network. In our work we are exclusively concerned with all the information that can be extracted at the network layer (e.g., from the TCP/IP datagram). We choose to use the Darpa 1999 database given the fact that all the intrusions are labeled and we can easily observe the visualization behavior while the network is under attack. Although applied to a dataset, the visualization technique can work on-line in a network because it only uses data that can be extracted in a real-time manner. Experiments show our visualization technique to be a good medium when trying to identify possible anomalies of the network such as:DoS types of attacks (e.g.,Smurfand Mailbomb) as well as probing attacks (e.g.,Portsweepand IPsweep).
19034041
Study on Agent-Based Parts Resource Application System for Commercial Design
An effective way of retrieving components is needed in order to make the implementation of product commercial development activity. In this paper, the components resource application method based on the software agent is proposed first. Then, on the base of comparison to the product commercial design components resources application system and the traditional supply chain system, three kind of application patterns based on the present network components resources are analyzed: the on-line purchase pattern, the on-line inquiry pattern and the on-line assign pattern. Then, according to the commercial development characteristic, the concrete structure of software agent suit to the commercialization performance is given. Corresponding, the components coding agent, the solid - commercial mapping and optimizing agent as well as managing agent are designed. From the initial period geometrical modeling, the intermediate stage commercial design as well as the entire process design management, the analysis of these three aspects have been carried on separately. In the end, the research work indicated that, the agent technology is one effective application method used to realizing the magnanimous components data analysis over the network
19870915
Research on Network-Based Collaborative Commodity Development
In this paper, a detailed method is proposed to make the transformation of a product model to a commodity model. A collaborative commodity development theory based on the three properties of physical, energy and information is proposed. An integrated model composed of four sub-models is analyzed: designing sub-model, supplying sub-model, managing sub-model, and profit sub-model. The key techniques in the system development are discussed, including the network-based parts application technology and the commercial model optimization and evaluation technology. For the former, a search engine using the functional agent technology for network-based parts searching is described. A prototype system has been implemented to validate the proposed approach.