{"title":"Attention Mechanism Driven YOLOv3 on FPGA Acceleration for Efficient Vision Based Defect Inspection","authors":"Longzhen Yu, Qian Zhao, Zhixian Wang","doi":"10.1145/3487075.3487165","DOIUrl":"https://doi.org/10.1145/3487075.3487165","url":null,"abstract":"In this study, an efficient vision-based industry defect inspection system using attention mechanism driven YOLOv3 on FPGA acceleration is proposed. First, an attention mechanism is employed to improve YOLOv3 for the target defect inspection application. Image preprocessing named CZS (Cut, Zoom, and Splice) operation is used to reconstruct product images for selectively concentrating on the pre-defined detection regions. Then we optimize the backbone network of YOLOv3 according to defect size in images. Second, we use the PYNQ-Z2 FPGA board to deploy the proposed defect inspection system. The optimized YOLOv3 is deployed on the programmable logic through Xilinx DNNDK, which is a low-latency, low-cost, and low-power consumption hardware platform for industrial defect inspection. Experimental results showed that the achieved defect inspection accuracy was 99.2% with a processing speed of 1.54 FPS.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124677359","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Community-Based Routing in Vehicular Social Networks","authors":"Zifeng Hao, Xiaolan Tang, Qun Wang, Wenlong Chen, Yongting Zhang","doi":"10.1145/3487075.3487183","DOIUrl":"https://doi.org/10.1145/3487075.3487183","url":null,"abstract":"Considering the social features of drivers and passengers on vehicles, different communities may have different levels of demand for each packet. In order to represent this difference, we design a significance value for each packet. Furthermore, a community-based routing protocol in vehicular social networks is proposed, named CRP. When selecting relays, the forwarding priority is calculated by combing the direct and indirect forwarding contributions. The direct forwarding contribution is computed based on the number of neighbor nodes in each community as well as its significance value, while the indirect forwarding contribution indicates the delivery ability in future by using the contact probabilities between communities. Then according to the forwarding priorities and the number of replicas, the new relays are selected and the number of replicas are distributed among new relays. Finally, experiments using real road map and well-designed routes for three communities in Beijing show that CRP outperforms other protocols in terms of the community delivery ratio, while keeping a short delay.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124687835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on TextCNN-based Evaluation of Rationality of Narrative Text Structure","authors":"Jincheng Wang, Jie Liu","doi":"10.1145/3487075.3487160","DOIUrl":"https://doi.org/10.1145/3487075.3487160","url":null,"abstract":"Automatic Essay Scoring refers to the use of computers to score composition by some technologies. This process does not require human intervention. Rational text structure analysis is an important part of automatic essay scoring. However, the study of text structure is still in its infancy, ignoring its importance to the evaluation. Existing research lacks a corpus for the evaluation of text structure. The recognition of text components mostly uses artificial experience for feature selection, and evaluation model is established based on them. To figure out these problems, this paper refers to the curriculum standards, works with experts to build text structure standard and labeling method, and formulate corresponding labeling specifications. Finally build a corpus of a certain scale. TextCNN are used to build a model for the text structure. Model treats each article as a whole for training, and realizes the use of deep learning algorithms to make the model automatically evaluate. The results in test set show that in the constructed narrative composition corpus for grades 5-9, the accuracy of the model can reach 72.4%.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125171875","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Overlapping Routing Tree Transmission Model Based on Segment Identification: OTSI Model","authors":"Sushu Guo, Wenlong Chen, Jiacheng Wang","doi":"10.1145/3487075.3487108","DOIUrl":"https://doi.org/10.1145/3487075.3487108","url":null,"abstract":"In the Internet of Things (IOT) based on IPv6. For large-scale multi-gateway WSN, the sensor device has its own certain limitations, and the processing capability of the node is very limited. Due to the limitations of the traditional WSN routing transmission protocol, this paper proposes an overlapping routing tree transmission model (OTSI) based on segment identifiers and a method to generate the model. We design a segment identifier based on the model, specifying transmission gateways and service demands for nodes in different manifestations of segment identifiers. We also designed a data transmission model of the OTSI in different scenarios. Through the OMNeT simulation experiment, it's found that the model can effectively specify the transmission gateway for the node according to the service demand, and achieve the balance of traffic transmission.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127097384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Machine Learning-based Prediction of Postoperative 30-days Mortality","authors":"Linna Wang, Linji Li, T. Zhu, Congli Ma, Li Lu","doi":"10.1145/3487075.3487130","DOIUrl":"https://doi.org/10.1145/3487075.3487130","url":null,"abstract":"Surgical patients aged 65 and over are facing a 2-10 times higher risk of death after surgery. Early prediction of postoperative mortality is essential, as timely and appropriate treatment can improve survival outcomes. With the development of medical and computer technology, numerous available health-related data can be recorded for research. Among various patient indicators which may affect the accuracy of prediction, it is necessary to find highly relevant and efficient features. The aims of this study were to use machine learning algorithms, specifically Bagging and Boosting Algorithms (e.g. Random Forest, eXtreme Gradient Boosting), to predict the postoperative 30-days mortality in surgical patients aged over 65, and to identify the optimal features using genetic algorithm(GA). This prospective study was developed and validated on the cohort from electronic health records (EHRs) of West China Hospital, Sichuan University, which contained 7467 surgical patients (0.924% mortality rate) who underwent surgery between July 1, 2019 and October 31, 2020. Compared with models like the traditional logistic regression model and the baseline ASA physical status, We found that XGBoost with hyper-parameters had best performance based solely on the automatically obtained features (area under the curve [AUC] of 0.9318, 95% confidence interval [CI] 0.9041 - 0.9594). The AUC of baseline ASA-PS was 0.6787 (95% CI 0.6471 - 0.7103) using XGBoost. When both ASA-PS and the selected features are included as inputs, XGboost achieved the AUC of 0.9345 (95% CI 0.9076 - 0.9613).","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121224348","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Automatic Thyroid Ultrasound Image Detection and Classification with Priori Knowledge","authors":"Mengdie Shi, Jianrui Ding, Shili Zhao, Zichen Huang","doi":"10.1145/3487075.3487166","DOIUrl":"https://doi.org/10.1145/3487075.3487166","url":null,"abstract":"Medical ultrasonic imaging technology is currently the preferred method to detect and diagnose benign and malignant thyroid nodules, which is widely used because of their low cost and non-invasive damage to patients. But automatic lesion detection and classification on thyroid ultrasound image is quite challenging due to the poor image quality. To solve the problem, based on popular Faster R-CNN network for natural image detection, a ResAt-Faster R-CNN model was proposed in the paper according to the characteristics of thyroid ultrasound image, the residual module and attention mechanism. The medical prior knowledges such as location and distribution information are further introduced to constrain the model to reduce the interference of surrounding tissues. The experimental results demonstrated that our proposed method was effective in the discrimination of thyroid nodules.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122564731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Spatial-Temporal Multi-Head Attention Networks for Traffic Flow Forecasting","authors":"Zhao Zhang, Ming Liu, Wenquan Xu","doi":"10.1145/3487075.3487102","DOIUrl":"https://doi.org/10.1145/3487075.3487102","url":null,"abstract":"Traffic flow forecasting plays an important role in the intelligent traffic system, which is the basis for traffic control and traffic management. However, due to the complex spatial-temporal dependence, traffic flow forecasting has always been a difficulty in the field of intelligent traffic. In order to select a suitable spatial-temporal forecasting method and solve the problem that recurrent neural architecture is not conducive to parallel computing, we construct a spatial-temporal forecasting model by using multi-head attention models. Use graph attention networks with multi-head attention mechanism to capture spatial features, and use the scaled dot product attention with positional encoding like Transformer to capture temporal features. Experimental results on two real-world datasets demonstrate that the forecasting error of our method is lower than baseline methods.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123285684","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Human Activity Recognition from Accelerometer Data: Axis-Wise Versus Axes-Resultant Feature Extraction","authors":"Aiguo Wang, Shenghui Zhao, Guilin Chen","doi":"10.1145/3487075.3487152","DOIUrl":"https://doi.org/10.1145/3487075.3487152","url":null,"abstract":"Benefitting from the development of pervasive computing, recent years have witnessed a variety of meaningful human-centric applications, where automating the recognition of human activities plays a central role in bridging the gap between sensing data and high-level services. Accelerometer-based activity recognizer often remains a priority due to its recognition performance, low costs, and portability, however, few studies systematically investigate how to extract and use features from the time-series sensor data and further compare their discriminant power. To this end, we herein propose two different ways of extracting features and exploring their combinations. Specifically, we take as a resultant axis or separate channels the accelerometer axes and then extract axes-resultant and axis-wise features. Afterwards, we evaluate the cases where the two feature sets are used separately or jointly. Finally, we conduct comparative experiments on two public activity recognition datasets with five different classification models in terms of four performance metrics. Results show that the use of axis-wise features outperforms its competitor in the majority across the datasets and that their joint use generally leads to enhanced accuracy.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"162 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115564038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"An Improved Faster R-CNN for Railway Fastening System Detection","authors":"Xin-Yi Peng, Shuzhen Tong, Xiaobo Lu, Yun Wei","doi":"10.1145/3487075.3487184","DOIUrl":"https://doi.org/10.1145/3487075.3487184","url":null,"abstract":"In the automatic railway anomaly inspection technology based on image processing and deep learning, an effective algorithm used for high-precision detection of the fastening system is very important, especially in turnout sections. It is challenging because the background of the turnout sections is complicated with various types of targets. This paper improved the Faster R-CNN model, used multi-scale feature map fusion for small targets. And modified predefined anchor to generate region proposals, added attention module to make the network focus on meaningful feature. Besides, this paper used cross-entropy function and SmoothL1 loss function for training and labeled 1200 image samples as dataset. Compared with the original Faster R-CNN model, the experimental results (AP) of the improved model in this paper increased from 96.3% to 98.9%, which effectively reduced the fault detection and missed detection and improved the accuracy of location.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130687266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Research on Fuzzing Technology for JavaScript Engines","authors":"Y. Tian, Xiaojun Qin, Shuitao Gan","doi":"10.1145/3487075.3487107","DOIUrl":"https://doi.org/10.1145/3487075.3487107","url":null,"abstract":"JavaScript engine is the core component of web browsers, whose security issues are one of the critical aspects of the overall Web Eco-Security. Fuzzing technology, as an efficient software testing approach, has been widely applied to detecting vulnerabilities in different JavaScript engines, which is a security research hotspot at present. Based on systematical dissection of existing fuzzing methods, this paper reviews the development and technical ideas of JavaScript Engine Fuzzing combined with taxonomy, proposes a general framework of JavaScript Engine Fuzzing and analyzes the key techniques involved. Finally, we discuss the core issues that restrict efficiency in current research and present an outlook on the future trends of JavaScript Engine Fuzzing.","PeriodicalId":354966,"journal":{"name":"Proceedings of the 5th International Conference on Computer Science and Application Engineering","volume":"151 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125322127","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}