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Adaptive computation is of great importance in numerical simulations. The ideas for adaptive computations can be dated back to adaptive finite element methods in 1970s. In this talk, we shall first review some recent development for adaptive methods with some application. Then, we will propose a deep adaptive sampling method for solving PDEs where deep neural networks are utilized to approximate the solutions. In particular, we propose the failure informed PINNs (FI-PINNs), which can adaptively refine the training set with the goal of reducing the failure probability. Compared with the neural network approximation obtained with uniformly distributed collocation points, the proposed algorithms can significantly improve the accuracy, especially for low regularity and high-dimensional problems.
Event date: 18/10/2022
Speaker: Prof. Tao Tang (Beijing Normal University-Hong Kong Baptist University United International College)
Hosted by: Department of Applied Mathematics
- Subjects:
- Mathematics and Statistics
- Keywords:
- Sampling (Statistics) Differential equations Partial -- Numerical solutions Mathematical models Adaptive computing systems
- Resource Type:
- Video
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Video
Geospatial information science is a discipline that focuses on using geospatial information technology to understand people, places, nature and processes of the earth. IoT refers to Internet of things, the combination of sensors, software and other technologies to connect and exchange data with other devices and systems over the Internet. The era of IoT brings us opportunities and challenges for geospatial information science. In the keynote, five characteristics and three scientific issues of geo-spatial information science in the era of IoT are summarised.
Even date: 6/9/2022
Speaker: Prof. Daren Li
Moderator: Prof. Christopher Chao (Hong Kong Polytechnic University)
Panel members: Prof. Qingyan Chen, Prof. Qinhao Chen (Hong Kong Polytechnic University)
Hosted by: PolyU Academy for Interdisciplinary Research
- Subjects:
- Land Surveying and Geo-Informatics
- Keywords:
- Internet of things Geospatial data Spatial data mining
- Resource Type:
- Video
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Video
Before the advent of computers around 1950, optimization centered either on small-dimensional problems solved by looking at zeroes of first derivatives and signs of second derivatives, or on infinite-dimensional problems about curves and surfaces. In both cases, "variations" were employed to understand how a local solution might be characterized. Computers changed the picture by opening the possibility of solving large-scale problems involving inequalities, instead of only equations. Inequalities had to be recognized as important because the decisions to be optimized were constrained by the need to respect many upper or lower bounds on their feasibility. A new kind of mathematical analysis, beyond traditional calculus, had to be developed to address these needs. It built first on appealing to the convexity of sets and functions, but went on to amazingly broad and successful concepts of variational geometry, subgradients, subderivatives, and variational convergence beyond just that. This talk will explain these revolutionary developments and why there were essential.
Event date: 1/11/2022
Speaker: Prof. Terry Rockafellar (University of Washington)
Hosted by: Department of Applied Mathematics
- Subjects:
- Mathematics and Statistics
- Keywords:
- Convex functions Convex sets Mathematical optimization Computer science -- Mathematics
- Resource Type:
- Video
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Video
【PolyU 85th Anniversary Interview Series】 Prof. Poon Chung-kwong led PolyU for 18 years. During his tenure as President, PolyU assumed full university status and started a new chapter in its history. In this video, you will learn about how Prof. Poon positioned PolyU in unique roles, helping the University to excel in various aspects and laying a strong foundation for its long-term development.
【理大八十五周年訪談系列】 潘宗光教授帶領理大18年，出任校長期間，理大正式取得大學地位，開展了理大歷史新的一頁。潘教授任內爲理大發展確立獨特的定位，並取得驕人成績，爲理大長遠發展奠定堅實的基礎。立即看片。
- Keywords:
- College presidents History Hong Kong Polytechnic University Interviews Education Higher China -- Hong Kong Universities colleges
- Resource Type:
- Video
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Video
【PolyU 85th Anniversary Interview Series】 Dr Sir Gordon Wu Ying-sheung assumed Chairmanship of the PolyU Council in 1997. Under his leadership of over six years, Sir Gordon guided a number of key PolyU campus development projects. He valued the positive impact hostel life brought to students and took part in the design of the PolyU’s first student hostel located in Hung Hom Bay. In this video, you will learn about Sir Wu’s views regarding education and whole person development as well as his wise words for young people.
【理大八十五周年訪談系列】 胡應湘爵士1997年出任理大校董會主席，在任六年領導理大校園多項重要發展，更親自參與理大第一所位於紅磡灣學生宿舍的設計，非常重視宿舍生活對大學生的成長。想知道胡爵士對學生全人教育的看法以及對年輕人的勸勉？立即看片。
- Keywords:
- History Hong Kong Polytechnic University Interviews Education Higher China -- Hong Kong Universities colleges College buildings
- Resource Type:
- Video
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Video
【PolyU 85th Anniversary Interview Series】 During his Chairmanship of the PolyU Council, Dr the Hon. Victor Lo Chung-wing invited the internationally renowned architect Dame Zaha Hadid to design the Jockey Club Innovation Tower, showcasing PolyU as a vibrant and innovative campus. In this interview, Dr Lo shares that he witnessed the development of another important building at PolyU. Do you know what it is?
【理大八十五周年訪談系列】羅仲榮博士出任理大校董會主席期間，邀請了國際知名的殿堂級建築師Dame Zaha Hadid 女士設計了賽馬會創新樓，為大學的建築群展現了創新形象。羅博士在訪談中更分享了任內見證理大另一重要設施的發展，你知道是甚麼嗎？
- Keywords:
- History Hong Kong Polytechnic University Interviews Education Higher College buildings Universities colleges China -- Hong Kong
- Resource Type:
- Video
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Video
【PolyU 85th Anniversary Interview Series】 Dr Marjorie Yang was the first female Council Chairman of PolyU. During her tenure, she actively promoted the translation of research into practical solutions and collaborations between PolyU and industry partners. In this interview, Dr Yang shares a heart-touching experience during her tenure and her efforts in driving sustainability.
【理大八十五周年訪談系列】楊敏德博士是第一位女士出任理大校董會主席。她任內積極推動大學將科研成果轉化為應用，重視大學與業界伙伴的合作。在訪談中，楊博士回顧了在任期間一次感動的經歷，以及她在推動實踐可持續發展所作的努力。
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Video
【PolyU 85th Anniversary Interview Series】 During his tenure as PolyU President, Prof. Timothy W. Tong faced the challenge of changing the undergraduate curriculum from three years to four years. He led the restructure of the curriculum, enhancing it to focus more on the holistic development of students. In addition, Prof. Tong launched a number of initiatives to foster entrepreneurial abilities as well as cultural and artistic development among students. Watch the video now and learn more about the curriculum restructure in those days!
【理大八十五周年訪談系列】唐偉章教授在任理工大學校長期間，面對大學由三年制改為四年制的挑戰，帶領大學課程的革新，令理大教育更重視學生全人發展。此外，唐教授任內先後推出多項舉措，培育學生創業精神，以及文化和藝術的修養。立即看片，回顧當年改制點滴﹗
- Keywords:
- College presidents Hong Kong Polytechnic University Interviews Education Higher China -- Hong Kong Universities colleges
- Resource Type:
- Video
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Video
University education nowadays focuses more on the promotion of students’ knowledge and professional qualifications, as compared to the cultivation of their morals and values. In fact, all the above are equally crucial to whole-person development. In this PolyU 85th Anniversary Public Lecture, we are honored to have Prof. Poon Chung-kwong share with us the relationship between knowledge and self-cultivation, and how they complement each other to fulfill the ultimate purpose of education.
大學教育近年來較著重提升學生的知識與專業水平，品德培養的比重相對較少。事實上全人教育涵蓋以上各方面，缺一不可。理大八十五周年校慶公開講座特別邀了理大榮休校長潘宗光教授與大家暢談學問與修養的關係。兩者兼備，相輔相成，才是教育的最高目標。
Event Date: 16.09.2022
- Keywords:
- College students -- Attitudes College students -- Conduct of life
- Resource Type:
- Video
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Video
The Palace Museum houses a collection of national treasures, which are not only rare and precious artworks, but also serve as vehicles for Chinese philosophy and culture. Since its establishment, the Palace Museum has taken preserving and carrying the Chinese cultural heritage forward as its core mission. In the past few decades, the Palace Museum has endeavoured to activate its collection and make the museum more connected and relevant to the world beyond the museum walls. As a bridge between the past and the present, China and the world, the Hong Kong Palace Museum is committed to the study and appreciation of Chinese art and culture. With a Hong Kong perspective and a global vision, the Museum interprets the Palace Museum’s collection and its culture and presents the essence of Chinese culture and values to a global audience, while advancing dialogue and mutual learning among world civilizations. In this PolyU 85th Anniversary Public Lecture, we are honored to have Dr Louis Ng Chi-wa, the first Director of Hong Kong Palace Museum, presents a public lecture, A New Vision for Carrying the Traditional Culture Forward. We sincerely invite you to embark on a journey exploring cultural heritage through the lecture.
故宮的文物收藏是國之重寶，不僅是藝術珍玩，還有以器明道的文化意義。故宮博物院自成立以來，一直以傳承中華文化為使命。新時代的故宮致力把文物活起來，從館舍天地走向大千世界。香港故宮繼往開來，定位於連繫古今，融通中外，以香港角度，結合環球視野，詮釋故宮文物和文化。香港故宮並致力走向世界，宣揚中國文化的普世價值，推動文化對話和文明互鑑。理大八十五周年校慶公開講座有幸邀請香港故宮文化博物館館長吳志華博士與大家分享「文化傳承的新視野」，一起展開文化傳承之旅。
Event Date: 22.10.2022
- Keywords:
- Art Chinese Historic preservation Civilization Cultural property
- Resource Type:
- Video