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Use of subword tokenization for domain generation algorithm classification

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Cybersecurity 2024年第2期7卷 1-12页

作者： Sea Ran Cleon Liew ngai Fong law University of Waterloo WaterlooCanada Department of Electrical and Electronic Engineering The Hong Kong Polytechnic UniversityKowloonHong Kong

Domain name generation algorithm(DGA)classification is an essential but challenging *** feature-extract-ing machine learning(ML)methods and deep learning(DL)models such as convolutional neural networks and long short-term memory have been ***,the performance of these approaches varies with different types of *** features in the ML methods can characterize random-looking DGAs better than Word-looking *** improve the classification performance on word-looking DGAs,subword tokenization is employed for the DL *** experimental results proved that the subword tokenization can provide excellent classification performance on the word-looking *** then propose an integrated scheme that chooses an appropriate method for DGA classification depending on the nature of the *** show that the integrated scheme outperformed existing ML and DL methods,and also the subword DL methods.

关键词： Botnet detection Domain names Network security Machine learning-based botnet detection

A Novel Patch-based Image Denoising Algorithm using Finite Radon Transform for Good VisualQ uality

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A Novel Patch-based Image Denoising Algorithm using Finite R...

2011年亚太信号与信息处理协会年会

作者： ngai-Fong law Wan-Chi Siu The Hong Kong Polytechnic University Kowloon Hong Kong

Patch-based denoising methods have recently emerged due to its good denoising performance. In this paper, based on analysis of the optimal over-complete patch aggregation, we highlight the importance of a local transform for good image features representation. A finite Radon transform （FRAT） based two-stage over-complete image denoising algorithm is then proposed for obtaining good visual quality of denoised images. Experimental results demonstrate good performance in that the denoised images obtained by the proposed method are less influenced by artifacts.

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来源： cnki会议评论

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Energy Management

Journal of Energy and Power Engineering 2024年第1期18卷 29-33页

作者： Khaled(moh’d Khalaf)Soleiman Alnobani Department of Chemical Engineering Jordan University of Science and TechnologyIrbid 22110Jordan

A new revised energy concept is proposed from relativistic approach using different kinds of *** is not always feasible to implement a project for saving *** is not merely heating a stream and cooling another *** study includes other considerations.A total feasibility study should be *** cost and the income should be *** this study it is shown how to perform such a feasibility study from scratch up to detailed *** is an investment *** are two energy balances:one thermal and the other *** are not separated but they complete each *** decision is upon rigorous energy *** the question where the energy will go shall be answered from 2nd law of thermodynamics.

关键词： Entropy energy feasibility study

The Hong Kong consensus statements on unresectable hepatocellular carcinoma:narrative review and update for 2021

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Hepatobiliary Surgery and Nutrition 2023年第3期12卷 366-385页

作者： Tan-To Cheung Simon Chun-Ho Yu Stephen L.Chan Ronnie T.P.Poon Philip Kwok Ann-Shing Lee Anna Tai Derek Tam Chin-Cheung Cheung Tak-Wing Lai Nam-Hung Chia Ada law Tracy Shum Yim-Kwan Lam Vince Lau Victor Lee Charing Chong Chung-ngai Tang Thomas Yau Department of Surgery Queen Mary HospitalThe University of Hong KongHong KongChina Department of Imaging&Interventional Radiology Prince of Wales HospitalThe Chinese University of Hong KongHong KongChina State Key Laboratory of Translational Oncology and Department of Clinical Oncology Sir YK Pao Centre for CancerPrince of Wales HospitalThe Chinese University of Hong KongHong KongChina Department of Radiology and Imaging Queen Elizabeth HospitalHong KongChina Department of Clinical Oncology Tuen Mun HospitalHong KongChina Department of Clinical Oncology Queen Elizabeth HospitalHong KongChina Department of Surgery United Christian HospitalHong KongChina Department of Surgery Tuen Mun HospitalHong KongChina Department of Surgery Princess Margaret HospitalHong KongChina Department of Surgery Queen Elizabeth HospitalHong KongChina Department of Clinical Oncology Pamela Youde Nethersole Eastern HospitalHong KongChina Department of Clinical Oncology Princess Margaret HospitalHong KongChina Department of Medicine and Geriatrics United Christian HospitalHong KongChina Department of Radiology Queen Mary HospitalHong KongChina Department of Clinical Oncology Queen Mary HospitalThe University of Hong KongHong KongChina Department of Surgery Prince of Wales HospitalThe Chinese University of Hong KongHong KongChina Department of Surgery Pamela Youde Nethersole Eastern HospitalHong KongChina Department of Medicine Queen Mary HospitalThe University of Hong KongHong KongChina

Background and Objective:Hong Kong,like many parts of Asia,faces a high burden of hepatocellular carcinoma(HCC)caused by high endemic rates of hepatitis B virus *** Kong clinicians have developed a high level of expertise in HCC treatment across surgical,transarterial,ablative,radiotherapeutic and systemic *** publication summarizes the latest evidence-based recommendations on how these modalities should be ***:In two meetings held in 2020,a multidisciplinary panel of surgeons,oncologists and interventional radiologists performed a narrative review of evidence on the management of HCC,with an emphasis on treatment of HCC not amenable to surgical *** attention was paid to new evidence published since the previous version of these statements in *** Content and Findings:The expert panel has formulated 60 consensus statements to guide the staging and treatment of unresectable *** the previous version of these statements,considerable additions have been made to the recommendations on use of targeted therapies and immunotherapies because of the large volume of new ***:Our consensus statements offer guidance on how to select HCC patients for surgical or non-surgical treatment and for choosing among non-surgical modalities for patients who are not candidates for *** particular,there is a need for more evidence to aid physicians in the selection of second-line systemic therapies,as currently most data are limited to patients with disease progression on first-line sorafenib.

关键词： Hepatocellular carcinoma(HCC) Hong Kong guidelines consensus

Simplified Methods for Eigenvalue Assignment

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Advances in Pure Mathematics 2015年第7期5卷 383-389页

作者： Omar moh’d El-Basheer El-Ghezawi Electrical Engineering Department The University of Jordan Amman Jordan

A state feedback method of reduced order for eigenvalue assignment is developed in this paper. It offers immediate assignment of m eigenvalues, with freedom to assign the remaining n-m eigenvalues. The method also enjoys a systematic one-step application in the case where the system has a square submatrix. Further simplification is also possible in certain cases. The method is shown to be applicable to uncontrollable systems, offering the simplest control law when having maximum uncontrollable eigenvalues.

关键词： Eigenvalue Assignment Pole Placement Recursive Methods

传统数学评价之“缺憾”——以一个租船问题为例

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数学教育学报 2006年第3期15卷 8-15页

作者：黄毅英林智中黄家鸣罗浩源孙旭花香港中文大学课程与教学学系

传统评价未能正确地反映数学的本质,传统的数学评价系统希望贴近常模分布.传统的数学评价是“片段”和“缩水”的评价.评价的标准间接规定了学生的问题解决模式,被评价的指标体系影响了学习的发生方式,评价的标准也不断加剧僵化数学观... 详细信息

传统评价未能正确地反映数学的本质,传统的数学评价系统希望贴近常模分布.传统的数学评价是“片段”和“缩水”的评价.评价的标准间接规定了学生的问题解决模式,被评价的指标体系影响了学习的发生方式,评价的标准也不断加剧僵化数学观的塑造.数学开放题为思维方式和过程提供了更多空间.开放题的质化评价弥补了传统的数学评价存在的某些缺陷,但这种评价与传统评价相比,确实耗费更多时间.利用开放题的质化评价是未来数学评价的方向.

关键词：传统数学评价数学开放题调查