We present an approach for on-line recognition of handwritten math symbols using adaptations of off-line features and synthetic data generation. We compare the performance of our approach using four different classifi...
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We present an approach for on-line recognition of handwritten math symbols using adaptations of off-line features and synthetic data generation. We compare the performance of our approach using four different classification methods: AdaBoost. M1 with C4.5 decision trees, Random Forests and Support-Vector Machines with linear and Gaussian kernels. Despite the fact that timing information can be extracted from on-line data, our feature set is based on shape description for greater tolerance to variations of the drawing process. Our main datasets come from the Competition on Recognition of Online Handwritten Mathematical Expressions (CROHME) 2012 and 2013. Class representation bias in CROHME datasets is mitigated by generating samples for underrepresented classes using an elastic distortion model. Our results show that generation of synthetic data for underrepresented classes might lead to improvements of the average per-class accuracy. We also tested our system using the Math Brush dataset achieving a top-1 accuracy of 89.87% which is comparable with the best results of other recently published approaches on the same dataset.
Because of the lack of inland river charts based on the S57 standard, the positive effect of Electronic Chart Display and Information systems(ECDIS) and Electronic Chart system(ECS) are limited. For resolving the defi...
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ISBN:
(纸本)9781784660543
Because of the lack of inland river charts based on the S57 standard, the positive effect of Electronic Chart Display and Information systems(ECDIS) and Electronic Chart system(ECS) are limited. For resolving the deficiency of S57 standard charts in inland waterways and ensuring the safety of ship navigation in those areas, this paper presents the technology for transforming Geographic Information system(GIS) maps to S57 standard charts. First, the vector topologic structures of Map Info universal exchange format and S57 standard format are demonstrated. Then, transformation parameters and the target objects matching between the GIS maps and S57 charts are analysed. Based on the above, some key techniques are designed, including a model of vector data transformation, topological mapping relationships between the target objects of river GIS maps and the feature objects or special objects of S57 standard charts. Furthermore, the implementation process of transformation technology between river GIS maps and S57 charts is developed. The result show that the transformed S57 river charts can work perfectly on the ECDIS and ECS devices, which promotes the application of ECDIS and ECS, whilst ensuring the safety of vessel navigation.
Drug compliance and adverse drug reactions (ADR) are two of the most important issues regarding patient safety throughout the worldwide healthcare sector. ADR prevalence is 6.7 % throughout hospitals worldwide, with a...
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This paper analyses the characteristics of S aaS model system,gives the system architecture of dynamic workflow management and ER graph of system in the S aaS model,and gives the specific design and implementation in ...
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ISBN:
(纸本)9781467349970
This paper analyses the characteristics of S aaS model system,gives the system architecture of dynamic workflow management and ER graph of system in the S aaS model,and gives the specific design and implementation in the light of the system architecture of the tenant configuration,the tenant organization management,process drawing,and process node authority distribution,process node task operation and other major modules,the way of specific design and realization embodies multi-tenant,configurability,scalability,adaptability and other characteristics of S aaS and meets the demand of practical work.
According to the feature of data format in network automatic test system, a database model integrated DBMS and file system is advanced in this paper. Based on the model and java technology, combined with general and c...
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This paper was focused on the discussion about the major nutrients translocation in bleeding sap during muskmelon development and its responses to dissimilar grafting *** experiments with muskmelon（Cucumismelo *** 1...
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This paper was focused on the discussion about the major nutrients translocation in bleeding sap during muskmelon development and its responses to dissimilar grafting *** experiments with muskmelon（Cucumismelo *** 1） as scion and white seed pumpkin（Cucurbita maximaxmoschata *** Strong,Qianwang and Shengzhen 1） as rootstocks have indicated that these dissimilar scion/rootstock combinations will exert different influences on the total volume and major nutrients translocation in bleeding *** increased the total volume of bleeding sap at different developmental stages,and G1（Zhongmi 1/Riben Strong） and G3（Zhongmi 1/Shenzhen 1） enhanced the supply capacity of NO-N,NH-N,phosphorus and potassium to the aboveground parts from the root *** based on the major nutrient supply capacity of root system for comprehensive consideration,G1 and G3 were superior grafting combinations for top quality and high yield potential.
computersystem of college students PE scores management is intended to take the place of teachers in calculating and counting scores of PE courses, and implement information management of scores of PE courses. The sy...
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ISBN:
(纸本)9783642330292
computersystem of college students PE scores management is intended to take the place of teachers in calculating and counting scores of PE courses, and implement information management of scores of PE courses. The system implements PE scores management by B / S mode, this mode solved the drawback that it was essential to enter the specialized laboratories to access the system by C / S mode, it facilitates the storage and query of students' scores. The computersystem has completed tedious calculations and statistics of sports scores automatically, achieved information management of sports scoers, alleviated working pressure of the PE teachers, improved the working efficiency of PE teachers.
DNA computing is a new way of computing in computer research, which is different from the traditional method of calculation. A large number of facts indicate that many complex problems can be solved by using it. Molec...
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DNA computing is a new way of computing in computer research, which is different from the traditional method of calculation. A large number of facts indicate that many complex problems can be solved by using it. Molecular beacon is a biological molecule with similar to hairpin and can detect the target sequences in solution accurately. According to the characteristics of mathematical model for the minimum set covering problem, this paper proposed a new DNA algorithm for solving the minimum set covering problem based on molecular beacon. In this proposed algorithm, the principle of molecular beacon is introduced and the procedure of solving the minimal set covering problem model is analyzed, the corresponding experimental operations were designed and a specific instance is used to verify the correctness of the proposed algorithm. The results show that this proposed algorithm is reliable and easy to be carried out without any catalyst and enzymes. Besides, molecular structures used in experiments are simple.
Time delay is one of the most important aspects of the suspension control performance impact in maglev transportation system(MTS).By using the traditional PID control,the problem is that it is difficult to confirm the...
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Time delay is one of the most important aspects of the suspension control performance impact in maglev transportation system(MTS).By using the traditional PID control,the problem is that it is difficult to confirm the PID parameters and have long settling time,even appear the chaotic ***,using Expert PID(EPID)control method produced over-fitting to initial assignments,local optimum induced easily and slow convergence rate *** on the global optimization feature of PSO algorithm,it has been adopted to optimize the initial values of Expert PID control in this *** intelligent control algorithm for the maglev transportation system was put forward based on Expert PID optimized by Particle Swarm Optimization algorithm(EPID-PSO).The expert rule is that if the absolute value of the error trended to decrease,the PID current control kept its maintenance;if not,then the PID current control applied strong *** this rule,the dynamic error is reduced,and the performance of time delay is *** results by MATLAB proved that the control scheme compared with EPID control and PSO-PID control has good robustness,shorter adjustment time,faster response time,achieving better quality of control.
Since the location-based social networking services emerged,the location privacy issue has gained widespread concerns from consumers and *** the location history plays an important role in knowledge discovery,many peo...
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Since the location-based social networking services emerged,the location privacy issue has gained widespread concerns from consumers and *** the location history plays an important role in knowledge discovery,many people worry that their privacy will be disclosed *** this paper,we introduce a spatial-temporal cloaking model which follows the k-anonymity principle to protect the location *** corresponding algorithm which can find a minimum cloaking 3D box covering the actual location and its temporal information is proposed as ***,the algorithm is able to prevent the modeled records against the continuous attacks which infer the actual location by computing the overlapping spatial *** experimental results show that the proposed algorithm has a high efficiency.
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