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Automatic fare collection (AFC) system archives massive and continuous trip information for each cardholder. Mining the smart card transaction data from AFC system brings new opportunities for travel behavior and demand modeling. This study focuses on detecting the home location and trip purposes for subway passengers (cardholders), based on the internal temporal–spatial relationship within multi-day...
Service composition is becoming a hot research point in recent years, especially in distributed peer-to-peer (P2P) network. However, how to guarantee the high-quality composition service performance becomes the key technology and difficulty in P2P network, which draws lots of attention in computer research field. According to the characteristics of distributed network, an adaptive service composition...
The reclaimed water network differs from the drinking water network in many aspects and this sets a higher requirement for management. According to the practical situation of the reclaimed water network in Tianjin, the urban reclaimed water network management system based on ArcGIS Server is proposed. This system centers on one complete geographical database of reclaimed water network which is designed...
In keyword search over relational databases (KSORD), retrieval of user's initial query is often unsatisfying. User has to reformulate his query and execute the new query, which costs much time and effort. In this paper, a method of automatically reformulating user queries by relevance feedback is introduced, which is named VSM-RF. Aimed at the results of KSORD systems, VSM-RF adopts a ranking method...
Detailed models are required in computer graphics for many applications. However, considering the processing and transporting time, it is often necessary to approximate these models. In this paper we provide an effective simplification method for mesh models, which decreases the size of complex models and keeps visual features. We employ the integral invariant to distinguish the desired features on...
Deep Web has been an important resource on the Web due to its rich and high quality information, leading to emerging a new application area in data mining and information retrieval and integrates. In Web scale deep Web data integration tasks, where there may be hundreds or thousands of data sources providing data of relevance to a particular domain, It must be inefficient to integrate all available...
In diagnosing pulmonary diseases aided by computer, accurate segmentation of the airway tree from the CT images is the basis for subsequent processing and analyzing. It is still a challenging task due to the image noise, partial volume effect and texture similarity of the airway and parenchyma. In order to solve these problems, various algorithms have been proposed, among which the region growing...
The quality real-time monitoring of aluminium alloy resistance spot welding is realized by distributed multiple-sensor synchronous collection system. Displacement signal time-frequency domain wavelet analysis and further Butterworth band-pass filter statistic analysis show that the range of the electrode displacement signal of the expulsion welding spots can reach about 0.5 mm, which far exceeds the...
System-on-Chip is comprehensively applied in the image and signal processing field. With higher demands of customers and increasing complexity of System-on-Chip, System-on-Chip system level design issues become more critical. Hardware/software partitioning is an important step in the system level design. Application feature analysis and early design decision for hardware/software partitioning become...
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