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| 1 | WAF-Based Chinese Character Recognition for Spam Image Filtering显示文摘We address the problem of filtering image spam, a kind of rapidly spread spam in which the text is embedded into images to defeat text-based spam filter.Particularly, we focus on image spam with Chinese text as 'spam' which is a more challenging task. A popular way to detect image spam is by Optical character recognition(OCR) system, which detects and recognizes the embedded text, then followed by a text classifier that discriminate spam from ham. However, spammers start to obscure image text to prevent OCR system discovering the spam text. To compensate for the shortcomings of OCR system, a novel method which essentially is a keyword reconstruction algorithm based on Word activation force(WAF) model is proposed. It is effective on discovering keywords, hence is benefit for the later classification stage and notably improve the performance of image spam filtering. The experimental results on a personal data set of spam images(publicly available) validate the effectiveness of our approach that outperforms the original OCR system in practical usage with complex background in image spam. | LI Siyuan LI Ruiguang XU Yuan ZHOU Hao YAN Hanbing XU Bin ZHANG Honggang | 2018 | Chinese Journal of Electronics2018，27，5： | 3 |
| 2 | A FREE-BOUNDARY PROBLEM TO DYNAMIC SYSTEM FOR PURE FOREST显示文摘A free-boundary model of nonlinear dynamic system for pure forest is presented, in which the felling rate is unbounded nearby the free boundary. The effiect of unbounded function on a priori estimate and analysis of regularity is overcome, and the existence and uniqueness of the global classical solution to this system are proved. | Longfeng Xu, Hanbing Wu (Anhui University of Technology, Maanshan 243002, Anhui, ) | 2010 | Annals of Differential Equations2010，26，2： | 3 |
| 3 | Filtering Chinese Image Spam Using Pseudo-OCR显示文摘For image spam filtering, the Optical character recognition(OCR) based methods often achieve a better performance due to the more complex structure of recognizing corresponding text. However, applying traditional OCR techniques usually introduced shortcomings like the expensive computational cost, vulnerability to image noises and artificial interferences, especially for Chinese image spam filtering. So, by optimizing recognition procedure of traditional OCR, we propose the idea of pseudo-OCR more suitable for Chinese image spam filtering. During which discriminating the potential image spam character features from ham ones is sufficient, instead of recognizing them. What's more, a novel Chinese key-point based character feature specific for pseudo-OCR is also devised and extracted using a carefully designed algorithm, which outperforms classic corner detection methods in finding such key-points. Experiment results show that our proposed system usually has a better performance than traditional OCR based method while maintaining a low false positive rate. | XU Bin LI Ruiguang LIU Yashu YAN Hanbing LI Siyuan ZHANG Honggang | 2015 | Chinese Journal of Electronics2015，24，1： | 2 |
| 4 | Degassing of molten aluminum A356 alloy using ultrasonic vibration显示文摘 | Hanbing Xu Xiaogang Jian Thomas T. Meek Qingyou Han | 2004 | Materials Letters2004，，29： | 2 |
| 5 | Effects of ultrasonic field and vacuum on degassing of molten aluminum alloy 显示文摘 | Xu Hanbing Meek Thomas T Han Qingyou | 2007 | Materials Letters2007，61，4： | 1 |
| 6 | Effects of ultrasonic vibration on degassing of aluminum alloys显示文摘 | XU Hanbing HAN Qingyou THOMAS T M | 2008 | Materials Science and Engineering2008，473，： | 1 |
| 7 | Degassing of molten aluminum A356 alloy using ultrasonic vibration 显示文摘 | Xu Hanbing Jian Xiaogang Thomas T | 2004 | Materials Letters2004，58，29： | 1 |
| 8 | Effects of ultrasonic field and vacuum on degassing of molten aluminum alloy显示文摘 | XU Hanbing THOMAS T M HAN Qingyou | 2007 | Materials Letters2007，61，： | 1 |
| 9 | Degassing of molten aluminum A356 Alloy using ultrasonic vibration显示文摘 | XU Hanbing JIAN Xiaogang THOMAS T M | 2004 | Materials Letters2004，58，： | 1 |
| 10 | Degassing ofmolten aluminum A356 alloy using ultrasonic vibration显示文摘 | Xu Hanbing Jian Xiaogang Thomas T M | 2004 | Materials Letters2004，58，： | 1 |
| 11 | Effects of ultrasonic vibration on degassing of aluminum alloys显示文摘 | Xu Hanbing Han Qingyou Meek T T | | 0，，1： | 1 |
| 12 | Fluidity of alloys under high pressure die casting conditions显示文摘 | Han Qingyou Xu Hanbing | 2005 | Scr Mater2005，53，： | 1 |
| 13 | Self-aligned Cu–Si core–shell nanowire array as a high-performance anode for Li-ion batteries显示文摘 | Jun Qu Huaqing Li John J. Henry Surendra K. Martha Nancy J. Dudney Hanbing Xu Miaofang Chi Michael J. Lance Shannon M. Mahurin Theodore M. Besmann Sheng Dai | 2011 | Journal of Power Sources2011，，： | 1 |
| 14 | Degassing of Molten Aluminum A356 Alloy Using Ultrasonic Vibration 显示文摘 | Xu Hanbing Jian Xiaogang Meek Thomas T | 2004 | Materials Letters2004，58，： | 1 |
| 15 | Effects of ultrasonic field and vacuum on degassing of molten aluminum alloy显示文摘 | Hanbing Xu Thomas T. Meek Qingyou Han | 2006 | Materials Letters2006，，4： | 1 |
| 16 | Effects of ultrasonic field and vacuum on degassing of molten aluminum alloy 显示文摘 | Xu Hanbing Meek Thomas T Han Qingyou | 2007 | Materials Letters2007，，61： | 1 |
| 17 | Friction and wear behavior of polytetrafluoroethene composites filled with Ti3SiC2显示文摘 | Xu Jianguang Yan Hanbing Gu Daguo | 2014 | Materials and Design2014，61，： | 1 |
| 18 | Degassing of molten aluminum A356 alloy using ultrasonic vibration 显示文摘 | Xu Hanbing Jian Xiaogang Meek Thomas T | 2004 | Materials Letters2004，58，： | 1 |
| 19 | The design of duplexer with TE08 mode dielectric resonator 显示文摘 | Xu Meng Li Hanbing Wang Zhiyong | 2012 | IEEE Global Symposium on Millimeter Waves2012，，2730： | 1 |
| 20 | Degas- sing of aluminum alloys using ultrasonic vibration显示文摘 | Xu Hanbing Jian Xiaogang Han Qingyou | 2004 | Mater Lett2004，58，29： | 1 |
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