W.W.Y. Hsu

W.W.Y. Hsu
National Taiwan Ocean University | ntou · Department of Computer Science

Doctor of Philosophy

About

43
Publications
6,478
Reads
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182
Citations
Citations since 2017
13 Research Items
115 Citations
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201720182019202020212022202305101520

Publications

Publications (43)
Article
Full-text available
Backgrounds An increasing incidence of Acute Myeloid Leukaemia (AML) has been reported in several Western countries. However, the epidemiology of AML in Asia is very limited. According to the National Comprehensive Cancer Network (NCCN) guideline of AML, a range of conventional therapy options is available to AML patients. Nevertheless, different t...
Conference Paper
Full-text available
Illegal, unregulated, unreported, and overfishing have become a major problem when fishing becomes commercialized in many parts of the world. One of the critical activities in IUU research is to monitor the fishing activities of fishing boats by looking at their fishing gear and trying to estimate the catch amount of a specific fishing boat. Moreov...
Article
Full-text available
Mixed fisheries refer to fishing activities that catch more than one species simultaneously, and a species may be fished using different gear. A trawl fishery shares these features to exploit multiple species simultaneously, with diverse fishing gear and strategies. The situation becomes more complex when interactions among fleet dynamics, fishing...
Conference Paper
Flag of convenience (FOC) vessels is a common practice in which vessel owners register their ship in another country other than the ship owners. This policy creates difficulties in enforcing regulations from the owner’s company. Mainly, FOC vessels are usually a part of the dark fleet. These vessels are typically invisible to the authorities becaus...
Conference Paper
Full-text available
The size overseas fisheries fleet of Taiwan ranks second in the world. Following the development of the DeepSea 9 (DS9), which is installed and operating at the Fisheries Monitoring Control (FMC) center at the Fisheries Agency, Council of Agriculture of Taiwan, overseas fisheries monitoring system has helped in preventing illegal, unreported, and u...
Conference Paper
Full-text available
Tracking fishing activities is a measure to understand the distribution of marine biology, the abundance of resources, and the living conditions of fishers. This research uses experiences from the voyage data recorder (VDR) project of Taiwan to map the distribution of marine resources of Timor-Leste, an island at the southern end of Maritime Southe...
Conference Paper
Full-text available
This paper will focus on developing and designing a portable fisheries assistant system (FAS), a micro fisheries activity assistant system which integrates operation zone detections, i.e., marine protected zones and closed fishing season areas, online digital crew declaration system, emergency distress calls, and trajectory recording. FAS combines...
Article
Full-text available
Objective Although there is accumulating evidence regarding multimorbidity in Western countries, this information is very limited in Asian countries. This study aimed to estimate population-based, age-specific and gender-specific prevalence and trends of multimorbidity in the Taiwanese population. Design This was a cross-sectional study based on c...
Conference Paper
Full-text available
This paper designs a portable fisheries assistant system, capable of detecting operation zone within marine protected areas and recording trajectory. The microdevice used to deploy this system has enough computational powers to achieve the above tasks and can integrate with external modules, i.e., GSM transmitter and receivers, GPS receivers, and e...
Conference Paper
We develop an intelligent credit rating system that can provide debtors' rating information without involving credit rating agencies. Several models are used for credit scoring in our work, including the Duffie's model, logistic regression, and random forest. We compare the performance of these models and build an in-depth understanding of the eval...
Article
Background: This population-based cohort study was to compare the risks of incident cancer in osteoporosis patients who used bisphosphonates, calcitonin or selective estrogen receptor modulators (SERMs). Methods: We identified 9995 patients who were diagnosed with osteoporosis and prescribed osteoporosis drugs (bisphosphonate (n = 4675), calcito...
Conference Paper
Full-text available
Marine activity management is difficult due to the inability to surveil entities operating on the open water as if was on land. Large vessels operating at deep seas, far seas, and high seas are equipped with VMS which can be monitored. However, small fishing boats operating coastal and offshore do not have this mechanism for monitoring. Taiwan gove...
Conference Paper
Data security and privacy is a major concern for the users while using software services on the cloud. When users want to compute on a cloud service, traditional encryption schemes can be applied to encrypt and transfer the data to the cloud service. However, the service provider must decrypt the data for input into their computational model and th...
Article
Full-text available
Managing and maintaining fishing ports is crucial for fishing activities. With the lack of budget and labor force, some fishing ports face the brink of being shut down. A first choice for demolishing would be fishing ports with low utilization, but this does not mean the port is totally useless. When severe weather condition, i.e., typhoons, is in...
Conference Paper
Managing and maintaining fishing ports is crucial for fishing activities. With the lack of budget and labor force, some fishing ports face the brink of being shut down. A first choice for demolishing would be fishing ports with low utilization, but this does not mean the port is totally useless. When severe weather condition, i.e., typhoons, is in...
Conference Paper
Full-text available
Life insurances are important financial instruments that exists in our daily life. In Taiwan, this importance is supported by government statistic numbers in which each person holds 2.3 life insurance policies on average. Life insurance have many aspects, including whole life insurances, termed life insurances, and annuities. This research focus on...
Conference Paper
Full-text available
Voyage data recorders are devices kept on vessels to track their trajec-tories when overseas. It receives signals from global positioning satellites to compute its current location on Earth and records the current speed, course, and bearing within its internal memory. The information is downloaded and recorded each time the fishing vessel docks for...
Article
We propose a novel approach, called random traders, to benchmark equity funds' performance. A random trader adopts an all-in-all-out strategy to buy and sell the market index at random timing with capital being negligible as compared with the market size. With the empirical distribution of a random trader's return, each equity fund is scored by the...
Conference Paper
Full-text available
Life insurances have become a necessity in our daily life. The United States government census data shows that insurance premiums totaled approximately 8.18% of the GDP. As for Taiwan, the government statistics data indicates that each person holds 2.23 life insurance policies on average and the money spent in life insurances measure up to 18.19% o...
Conference Paper
The necessity for people to understand the value of the life insurance policy they are holding is crucial. Statistical information of 2012 shows that life insurance has become an inseparable part of our daily life. In the United States, insurance premiums total approximately 8.2% of the GDP. For Taiwan, this value ranks first in the world at 18.2%...
Conference Paper
In the last few years, we have witness many disasters which destroyed communication networks to the outside world. Wireless mesh network (WMN) is one of the best choices for establishing a network during disaster recovery. In most disaster area, the reliability of WMNs decreased rapidly due any unpredictable environment changes. The disruption of s...
Article
Full-text available
This paper proposes novel lattice algorithms to compute tail conditional expectation of European calls and puts in linear time. We incorporate the technique of prefix-sum into tilting, trinomial, and extrapolation algorithms as well as some syntheses of these algorithms. Furthermore, we introduce fractional-step lattices to help reduce interpolatio...
Article
Full-text available
The optimal duration of dual antiplatelet therapy after percutaneous coronary intervention (PCI) remains uncertain. The objective of this study was to examine the association between duration of dual antiplatelet therapy and re-hospitalization for acute coronary syndrome (ACS) in ACS patients who underwent PCI. We identified 975 newly diagnosed ACS...
Article
Using Taiwan's National Health Insurance Research Database, this large population-based study was conducted to explore the incidences and risk factors of post-transplant malignancy in Asian renal transplant recipients. A total of 642 patients who firstly underwent renal transplant between January 1, 2000 and December 31, 2008 were identified from a...
Conference Paper
Predicting prices and risk measures of assets and derivatives and rating of financial products have been studied and widely used by financial institutions and individual investors. In contrast to the centralized and oligopoly nature of the existing financial information services, in this paper, we advocate the notion of a Financial Cloud, i.e., an...
Conference Paper
This paper presents an efficient algorithm for finding the optimal k-cuts of a nondecreasing array of size n that produces the maximum area under the points. The naïve approach uses a dynamic programming algorithm which requires O(kn2) time, where n is the size of the array. This algorithm is time consuming for large n or k and thus inappropriate....
Article
Members of the academic community have increasingly turned to digital libraries to search for the latest work of their peers. On account of their role in the academic community, it is very important that these digital libraries collect citations in a consistent, accurate, and up-to-date manner, yet they do not correctly compile citations for myriad...
Conference Paper
Automatic emotion sensing in textual data is crucial for the development of intelligent interfaces in interactive computer applications. This paper reports a high-precision, domain-independent approach for automatic emotion sensing for "events" embedded in sentences. The proposed approach is based on the common action distribution between the subje...
Conference Paper
Asian barrier options are barrier options whose trigger is based on an average underlying price. They provide the advantages of both Asian options and barrier options. This paper introduces the first quadratic-time lattice algorithm to price European-style Asian barrier options. It is by far the most efficient lattice algorithm with convergence gua...
Article
Asian options are popular path-dependent financial derivatives. This paper uses lattices to price fixed-strike European-style Asian options that are discretely monitored. The algorithm proposed can also be applied to floating-strike Asian options as well because fixed-strike and floating-strike Asian options are related through an equation. The dis...
Conference Paper
This study proposes an emotion detection engine for real time Internet chatting applications. We adopt a Web scale text mining approach that automates the categorization of affection state of daily events. We first accumulated a huge collection of real-life entities from Web that would participate in events with a user in the chatting room. Based o...
Article
This paper proposes novel lattice algorithms to compute tail conditional expectation. To improve the naive approach, we develop tilting, trinomial, and extrapolation algorithms together with some syntheses of these algorithms. Furthermore, we introduce fractional-step lattices to prevent interpolation error in the extrapolation algorithms. A key fi...
Article
Asian options are strongly path-dependent derivatives. Although efficient numerical methods and approximate closed-form formulas are available, most lack convergence guarantees. Asian options can also be priced on the lattice. All efficient lattice algorithms keep only a polynomial number of states and use interpolation to compensate for the less t...
Conference Paper
Using an evolutionary approach for evolving classifiers can simplify the classification task. It requires no domain knowledge of the data to be classified nor the requirement to decide which attribute to select for partitioning. Our method, called the Genetic Evolved Classifier (GEC), uses a simple structured genetic algorithm to evolve classifiers...
Article
Full-text available
The original Genetic Evolved Classifier (GEC) uses an evolutionary approach to evolve a set of rules for solving classification problems. The pitfalls of GEC lies in its method of partitioning continuous attributes which assumes that all data are normally distributed and the formula for evaluating fitness favors the majority classes. In this work,...

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Projects

Projects (3)
Project
This research project will focus on developing and designing i-Fish prototype, a micro fisheries activity assistant system capable of integrating digital crew declaration system, emergency distress calls, and trajectory recording. The microdevice used to deploy i-Fish has enough computational powers to achieve the above tasks and can integrate with external modules, i.e., GSM transmitter and receivers, GPS receivers, and external storages. Microdevices require much less energy than regular computers and can be activated using mobile power banks, which makes it suitable to carry on fishing rafts and sampans which do not have a stable source of electric power. Development of the software will also take account of using operations that consume less power to lengthen the operation time of i-Fish. The development of the current stage will use 4G mobile network to relay information and will be field tested by going outside and on to the seas. To support i-Fish, a central data processing unit will be established to receive, store, process, and integrate the data sent by i-Fish with the fisheries data center. Finally, research and experiments will be done to evaluate the capability of i-Fish integrating with the AIS system.
Project
Designing, implementing, and deploying a next-generation oceanic information system is a key to future fisheries management. This project focuses on creating such a system, providing a basis for future development. Besides being extensible, stable, and easy to use, this system must also contain the following elements. It must use big data storage technologies, which allows sharding, parallelism, load balancing, and data integrity. The final system will integrate existing VDR databases with VMS database, fisheries management database, the Torch system, and report databases. The management component of this system will be designed according to the regulations and requirements of the government. We will also consider to process electronic files such as word and excel files and automatically parse them into the database to lessen human tasks. We will also design the new way or integrate the existing way in which the electronic information is relayed into our system. Cross-references, assertions to input data will be conducted automatically to filter out problems early to conserve time and labor. Future management and research can take benefit from the completeness and speed with the establishment of this system.
Project
Voyage Data Recorder (VDR) has been used for recording and computing vessel operations since 2007. This VDR device has become an important basis for fishery policy maker and fishery researchers to make further studies in understanding fishing activities and marine resources in our country. This project contains four objectives as follows. First, by importing and cleaning raw VDR data into databases, daily and regional queries on vessel activities is possible. In addition, plotting statistics onto geographic information systems will be designed. Second, we will apply big data technology, including sharding, replicating, and clustering to greatly enhance the capabilities of the hardware. Third, we will design algorithms to automatically cluster similar trajectories, which can be used in fisheries management in the future. Last, we will design a system to produce and plot vessel activities on demand.