Label placement is very important when we display the electronic map. It will affect the beauty of electronic map. Furthermore, in order to display label placement in real-time, the computational complexity can not be...
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Label placement is very important when we display the electronic map. It will affect the beauty of electronic map. Furthermore, in order to display label placement in real-time, the computational complexity can not be too high. A novel algorithm of label placement is expounded based on the thinking of grid. It first divides the screen simply, then those three objects of points, arcs and polygons will be dealt with. The label configuration is reasonable, and does not result in any overlap. The experimental result indicates this algorithm is simple and effective. It can meet the demand of high quality map dynamic label placement and is successfully applied in commercial GIS.
The type of the leaf vein can be a useful parameter in automatic identification of plant species. Leaf vein extraction is the precondition of discriminating the leaf vein type. In this paper a new method is presented ...
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The type of the leaf vein can be a useful parameter in automatic identification of plant species. Leaf vein extraction is the precondition of discriminating the leaf vein type. In this paper a new method is presented for leaf vein extraction based on mathematical morphology. Firstly, the color image of the plant leaf is transformed to gray image according to the hue and intensity information. Secondly, a combined operation of mathematical morphology is applied to the image to eliminate the color overlap between the whole leaf vein and the whole background. Thirdly, image segmentation is performed with OSTU method. Finally, the leaf vein can be got after some processing on details. Experiments have been conducted with several images and the results show the effectiveness of the method. The basic idea of the method is also applicable to other linear objects extraction.
This paper has surveyed the education evaluation method and technology both at home and abroad, and studied on the question of education evaluation information's mining. In view of the evaluation index system of h...
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ISBN:
(纸本)9781424465392
This paper has surveyed the education evaluation method and technology both at home and abroad, and studied on the question of education evaluation information's mining. In view of the evaluation index system of high and secondary vocational education, on the basis of AHP method it has improved the deficiency of AHP's quantitative analysis. The modified Genetic Algorithm method is used to constructed the data mining model on the basis of AHP method. This paper has taken a scientific quantitative analysis on the evaluation model's weight, and provided a vastitude future of education evaluation index system's quantification.
In machine translation(MT) practice,there is an urgent need for constructing a set of Chinese-to-English aspect transferring rules to define the transferring *** integrated feature set was used to generalize and justi...
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In machine translation(MT) practice,there is an urgent need for constructing a set of Chinese-to-English aspect transferring rules to define the transferring *** integrated feature set was used to generalize and justify the Chinese-to-English transferring rule of the 'ZHE' aspect(ZHE Rule).A ZHE classification model was built in this *** impacts of each set of temporal,lexical aspectual,and syntactic features,and their integrated impacts,on the accuracy of the ZHE Rule were *** 600 misclassified corpus sentences were manually examined.A 10-fold cross-validation was used with a decision tree *** main results are:(1) The ZHE Rule was generalized and justified to have a higher accuracy under the two metrics:the precision rate and the areas under the receiver operating characteristic curve(AUC).(2) The temporal,lexical aspectual,and syntactic feature sets have an integrated contribution to the accuracy of the ZHE *** syntactic and temporal features have an impact on ZHE aspect derivations,while the lexical aspectual features are not predictive of ZHE aspect derivation.(3) While associated with active verbs,the ZHE aspect can denote a perfective *** study suggests that the temporal and syntactic features are the predictive ZHE aspect classification features and that the ZHE Rule with an overall precision rate of 80.1% is accurate enough to be further explored in MT *** machine learning method,decision tree,can be applied to the automatic aspect transferring in MT research and aspectual interpretations in linguistic research.
This paper proposed a method for entity answer extraction, which examined three levels of relevance, including document, passage and entity. The entity answer extraction system and homepage recognition are also descri...
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This paper presents two methods for self-adapting the semantic sensitivities in a recently proposed semantics-based crossover: Semantic Similarity based Crossover (SSC). The first self-adaptation method is inspired by...
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This paper presents two methods for self-adapting the semantic sensitivities in a recently proposed semantics-based crossover: Semantic Similarity based Crossover (SSC). The first self-adaptation method is inspired by a self-adaptive method for controlling mutation step size in Evolutionary Strategies (1/5 rule). The design of the second takes into account more of our previous experimental observations, that SSC works well only when a certain portion of events successfully exchange semantically similar subtrees. These two proposed methods are then tested on a number of real-valued symbolic regression problems, their performance being compared with SSC using predetermined sensitivities and with standard crossover. The results confirm the benefits of the second self-adaption method.
In the present work we studied the fabrication of ferroelectric film as PLZT by the sol-gel technique, and the birefringence optical property induced by the external voltage is measured by the electro-optic modulated ...
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ISBN:
(纸本)9781424455652
In the present work we studied the fabrication of ferroelectric film as PLZT by the sol-gel technique, and the birefringence optical property induced by the external voltage is measured by the electro-optic modulated heterodyne interferometer. The seeding layer as PT is deposited on the ITO glass substrate before the deposition of PLZT film. After the deposition of PLZT film, a conducting layer as SnO2 is then coated on the top of PLZT. Experimental results show that there exists birefringence on this ferroelectric film we made by sol-gel method.
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