Scientific and reasonable utilization of bamboo is strongly related to the radial distribution of the fiber volume fraction. In this paper, the k-means clustering algorithm was applied to set separate thresholds for i...
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Scientific and reasonable utilization of bamboo is strongly related to the radial distribution of the fiber volume fraction. In this paper, the k-means clustering algorithm was applied to set separate thresholds for individual vascular bundles, to solve the problem that the bamboo ring cannot be binarized well. We introduced a layered model based on the WEB coordinate system, programmed via JavaScript, to layer the cross-section within the entire bamboo conveniently and accurately. It allowed uniform layering of sample areas of any thickness, any width, and any number of layers. Furthermore, this research systematically studied the bamboo rings at the breast height of Moso bamboo [Phyllostachys edulis (Carr)H. de Lebaie] grown in 12 major producing areas of China and the 50-internode sections from base to top of one bamboo with the method mentioned above. The results indicated that the thickness of a single layer should not be higher than 0.4 mm while examining the gradient structure of bamboo. The radial distribution of fiber volume fraction from 12 areas all followed the ExpDec1 function, and the mean goodness of fit (R2) was 0.988. The radial distribution of fiber volume fraction in the first 45 sections from the base to the top corresponded to the ExpDec1 function. It provided a theoretical basis for the functional improvement of bamboo and the development of new bamboo-based smart materials.
The study of ancient glass has been intensified in archaeological circles today,but its susceptibility to weathering can affect archaeologists' ability to classify *** order to classify glass artefacts,this paper ...
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The study of ancient glass has been intensified in archaeological circles today,but its susceptibility to weathering can affect archaeologists' ability to classify *** order to classify glass artefacts,this paper establishes a 'subclass classification model based on the sum of the absolute values of relative changes' and uses the k-means clustering algorithm to classify the *** order to identify different classes of glass objects,the chemical composition of the glass is extracted from the centroids of the different subclasses,and the Euclidean distance between the class centres is solved for,and the class represented by the class centre with the lowest Euclidean distance is taken as the class corresponding to the unknown object.
Due to the effects of prolonged burial,freshly unearthed ancient glass is often weathered to varying degrees,and it is difficult to identify the type of *** introduce machine learning into the composition analysis and...
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Due to the effects of prolonged burial,freshly unearthed ancient glass is often weathered to varying degrees,and it is difficult to identify the type of *** introduce machine learning into the composition analysis and type identification of ancient glass *** objective is to build a reliable ancient glass classification model based on decision trees and two different k-meansclustering *** performance of the decision tree is measured by the ROC *** performance of its clusteringalgorithm was evaluated by the Calinski-Harabasz *** results show that the area of AUC in the decision tree is 1 and the highest Calinski-Harabasz index of the two clusteringalgorithms is *** predictive ability of the model was verified well.
In order to solve the problem that the recognition accuracy and recognition speed of the current deep learning target detection algorithm are not compatible, an efficient and accurate object detection algorithm was pr...
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ISBN:
(纸本)9781728143231;9781728143224
In order to solve the problem that the recognition accuracy and recognition speed of the current deep learning target detection algorithm are not compatible, an efficient and accurate object detection algorithm was proposed and applied to the inspection of small-sized body stamping parts of an auto parts enterprise. Firstly, image data sets of 10 small-sized automobile body stampings were produced. The transfer learning method was used to train YOLO V3, YOLO V3-tiny and the model proposed in this paper. Then, three models were used for small-sized body stamping parts detection and recognition experiment. The experimental results show that our model can detect 37 images per second in the same sample and test environment, which is 208.33% higher than the YOLO V3 model;the average detection precision is 96.50%, compared with The YOLO V3-tiny model is improved by 4.40%, and the average detection precision is improved up to 22.58% on a single smaller size object. This study can provide visual navigation support for the small-size body stamping robot automatic sorting system.
With the development of E-commerce, the B2C E-commerce develop rapidly. Customers put forward higher requirements for delivery speed and accitracy. This paper studied the vehicle routing problem with soft time windows...
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ISBN:
(纸本)9781728158556
With the development of E-commerce, the B2C E-commerce develop rapidly. Customers put forward higher requirements for delivery speed and accitracy. This paper studied the vehicle routing problem with soft time windows in B2C environment. It improved the tabu search (TS) algorithm, and used k-means clustering algorithm to determine the initial solution to improve the algorithm's convergence speed. The algorithm was tested by using the data in literature [7]. The computing results were compared with those results in the literature [7] to verify the effectiveness of the algorithm.
A Distributed Denial of Service (DDoS) attack is the biggest threat to Internet-based applications and consumes victim service by sending a massive amount of attack traffic. In the literature, numerous approaches are ...
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A Distributed Denial of Service (DDoS) attack is the biggest threat to Internet-based applications and consumes victim service by sending a massive amount of attack traffic. In the literature, numerous approaches are available to protect the victim from the DDoS attacks. However, the attack incidents are increasing year by year. Further, several issues exist in the traditional framework based detection system such as itself becoming a victim, slow detection, no real-time response, etc. Therefore, the traditional framework based system is not capable of processing live traffic in the big data environment. This paper proposes a novel Spark streaming-based distributed and real-time DDoS detection system called S-DDoS. The proposed S-DDoS system employs the k-means clustering algorithm to recognize the DDoS attack traffic in real-time. The proposed detection model designed on the Apache Hadoop framework using highly scalable H2O sparkling water. The detection model deployed on the Spark framework to classify live traffic flows. The results show that the proposed S-DDoS detection system efficiently detects the DDoS attack from network traffic flows with higher detection accuracy (98%).
Aiming at the problem of unsatisfactory segmentation effect of aerial image of rapeseed flowers in the process of florescence recognition. This paper proposes a method combining k-meansalgorithm and color segmentatio...
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ISBN:
(纸本)9781450362948
Aiming at the problem of unsatisfactory segmentation effect of aerial image of rapeseed flowers in the process of florescence recognition. This paper proposes a method combining k-meansalgorithm and color segmentation algorithm to segment rapeseed image. Firstly, the k-meansalgorithm is used to first process the rapeseed image in Lab space. Then, the clustering results were processed once again in HSV space using color segmentation algorithm. Finally, the segmented rapeseed was subjected to morphological treatment to complete the effective segmentation of rapeseed and rapeseed flowers. Sixty different aerial rapeseed images were selected for segmentation experiments. The results show that this method can not only segment rapeseed well, but also effectively avoid the influence of illumination. The results of this experiment can provide reference for the later study of the flowering period of rapeseed.
We study a mobile edge computing system assisted by multiple unmanned aerial vehicles(UAVs),where the UAVs act as edge servers to provide computing services for Internet of Things *** goal is to minimize the energy co...
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We study a mobile edge computing system assisted by multiple unmanned aerial vehicles(UAVs),where the UAVs act as edge servers to provide computing services for Internet of Things *** goal is to minimize the energy consumption of this system by planning the trajectories of *** problem is difficult to address because when planning the trajectories,we need to consider not only the order of stop points(SPs),but also their deployment(including the number and locations)and the association between UAVs and *** tackle this problem,we present an energy-efficient trajectory planning algorithm(TPA)which comprises three *** the first phase,a differential evolution algorithm with a variable population size is adopted to update the number and locations of SPs at the same *** the second phase,the k-means clustering algorithm is employed to group the given SPs into a set of clusters,where the number of clusters is equal to th at of UAVs and each cluster contains all SPs visited by the same *** the third phase,to quickly generate the trajectories of UAVs,we propose a low-complexity greedy method to construct the order of SPs in each *** with other algorithms,the effectiveness of TPA is verified on a set of instances at different scales.
k-means clustering algorithm is the most widely used algorithm in clustering. It is most popular because of its simplicity. There are a lot of issues faced by k-meansalgorithm such as, low quality of clusters formed,...
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ISBN:
(纸本)9781538644928;9781538644911
k-means clustering algorithm is the most widely used algorithm in clustering. It is most popular because of its simplicity. There are a lot of issues faced by k-meansalgorithm such as, low quality of clusters formed, inability to detect outliers and solutions that can be local optimal solution. In this paper a simple outlier detection algorithm that makes use of Mean and Standard Deviation, is applied on datasets. These datasets are then given as input to an already existing hybrid clusteringalgorithm of k-means and Artificial Bee Colony (ABC) algorithm. By applying the outlier detection algorithm, it ensures that the clusters formed are of better quality.
The traditional k-means clustering algorithm prematurely plunges into a local optimum because of sensitive selection of the initial cluster center. Hierarchical clusteringalgorithm can be used to generate the initial...
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ISBN:
(纸本)9783037853122
The traditional k-means clustering algorithm prematurely plunges into a local optimum because of sensitive selection of the initial cluster center. Hierarchical clusteringalgorithm can be used to generate the initial cluster center of k-means clustering algorithm. The geometric features of input data can achieve a good distribution by means of pretreatment and feature extraction and selection. In the learning of fuzzy neural network, Java language is used to write source code of the algorithm. The experimental results show that new algorithm has improved the clustering quality effectively.
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