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    Chapter

    Machine Learning Applications on Box-Office Revenue Forecasting: The Taiwanese Film Market Case Study

    The Random Forest algorithm (RFA) is used to predict the approximate final box-office revenue of a movie in the Taiwanese film market. The results show that the RFA has stable capabilities to predict the final...

    Shih-Hao Lu, Hung-Jen Wang, Anh Tu Nguyen in Optimal Transport Statistics for Economics… (2024)

  2. Article

    Introduction

    Subal C. Kumbhakar, Robin Sickles, Hung-Jen Wang in Empirical Economics (2023)

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    Chapter

    A Hierarchical Panel Data Model for the Estimation of Stochastic Metafrontiers: Computational Issues and an Empirical Application

    In the metafrontier literature, firms are put into groups, generally defined by technology or geography. Each group has its own technological frontier, and the metafrontier is the upper bound of these group fr...

    Christine Amsler, Yi Yi Chen, Peter Schmidt in Advanced Mathematical Methods for Economic… (2023)

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    Article

    A hierarchical panel data stochastic frontier model for the estimation of stochastic metafrontiers

    This paper proposes a stochastic frontier model with three composed errors, and therefore six error components. As in the metafrontier literature, firms belong to groups with a group-specific frontier. A firm ...

    Christine Amsler, Yi Yi Chen, Peter Schmidt, Hung Jen Wang in Empirical Economics (2021)

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    Article

    Gender effect on the oncologic outcomes of upper urinary tract urothelial carcinoma in Taiwan

    Upper urinary tract urothelial carcinoma (UTUC) is a relatively uncommon malignancy in Western countries, affecting more men than women. By contrast, UTUC is relatively common in Taiwan and diagnosed more ofte...

    Yen-Ting Wu, Hao Lun Luo, Hung Jen Wang in International Urology and Nephrology (2020)

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    Article

    The role of intravesical prostatic protrusion in the evaluation of overactive bladder in male patients with LUTS

    To evaluate the association of intravesical prostatic protrusion (IPP) and overactive bladder (OAB) in male patients with lower urinary tract symptoms (LUTS). IPP has been suggested to correlate with storage s...

    Chia-Hung Tsai, Wei-Chia Lee, Yuan-Chi Shen in International Urology and Nephrology (2020)

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    Article

    Long-term functional change of cryoinjury-induced detrusor underactivity and effects of extracorporeal shock wave therapy in a rat model

    To investigate the long-term functional change of cryoinjury-induced detrusor underactivity (DU) and the therapeutic potential of repeated low-energy shock wave therapy (LESW).

    Yao-Chi Chuang, Pradeep Tyagi, H. L. Luo in International Urology and Nephrology (2019)

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    Article

    Efficacy and persistence of low-dose mirabegron (25 mg) in patients with overactive bladder: analysis in a real-world urological practice

    Mirabegron is a relatively new drug to treat overactive bladder (OAB). The therapeutic doses are between 25 and 100 mg in clinical trials. We aimed to evaluate the efficacy and persistence of low-dose mirabegr...

    Yuan Chi Shen, Hung Jen Wang, Yao Chi Chuang in International Urology and Nephrology (2018)

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    Reference Work Entry In depth

    Stochastic Frontier Models

    The stochastic frontier model was first proposed in the context of production function estimation to account for the effect of technical inefficiency. The inefficiency causes actual output to fall below the po...

    Hung-Jen Wang in The New Palgrave Dictionary of Economics (2018)

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    Article

    Nonparametric estimation of the determinants of inefficiency

    We consider the benchmark stochastic frontier model where inefficiency is directly influenced by observable determinants. In this setting, we estimate the stochastic frontier and the conditional mean of ineffi...

    Christopher F. Parmeter, Hung-Jen Wang in Journal of Productivity Analysis (2017)

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    Article

    Nocturia indicates a poor health status and increases mortality in male patients with type 2 diabetes mellitus

    To investigate the association between nocturia and erectile dysfunction, androgen deficiency, overactive bladder and systemic diseases in men with type 2 diabetic mellitus.

    Hui-Ying Liu, Min-Shen Chung, Hung-Jen Wang in International Urology and Nephrology (2016)

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    Article

    Evaluation of immunomagnetic separation for the improvement of Salmonella detection in aquatic environment

    This study compares various immunomagnetic separation (IMS) protocols. The average recovery efficiency of IMS for different Salmonella concentrations (between 102 and 105 CFU/ml) was 53.5 ± 12.9 % (n = 24). When ...

    Hsien-Lung Tsai, Bing-Mu Hsu, Tsui-Kang Hsu, Kuan-Hao Huang in Environmental Earth Sciences (2015)

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    Chapter

    Estimation of Technical Inefficiency in Production Frontier Models Using Cross-Sectional Data

    In this paper, we discuss the specification and estimation of technical efficiency in a variety of stochastic frontier production models. The focus is on cross-sectional models. We start from the basic neoclas...

    Subal C. Kumbhakar, Hung-Jen Wang in Benchmarking for Performance Evaluation (2015)

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    Chapter

    Subjective Knowledge Foundation of the Cross-Taiwan Straits International Peace Discourse

    To analyze the short-term prospects for political relations between China and Taiwan, I will review the subjective factors and dimensions affecting those relations and the ways in which the two sides are prese...

    Hung-jen Wang in Interpreting China as a Regional and Global Power (2014)

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    Article

    Semantic real-world image classification for image retrieval with fuzzy-ART neural network

    Image retrieval based on semantic learning has attracted considerable attention in recent years. Analyzing the contents of an image and retrieving corresponding semantics are important in semantic-based image ...

    Hung-Jen Wang, Chuan-Yu Chang in Neural Computing and Applications (2012)

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    Article

    A Bayesian estimator for stochastic frontier models with errors in variables

    A Bayesian estimator is proposed for a stochastic frontier model with errors in variables. The model assumes a truncated-normal distribution for the inefficiency and accommodates exogenous determinants of inef...

    Sheng-Kai Chang, Yi-Yi Chen, Hung-Jen Wang in Journal of Productivity Analysis (2012)

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    Article

    Development of cellular therapy for the treatment of stress urinary incontinence

    Stress urinary incontinence (SUI) is highly prevalent and associated with a reduced quality of life. An intact rhabdosphincter at the mid-urethra is mandatory to maintain urinary continence. Adult stem cell in...

    Hung-Jen Wang, Yao-Chi Chuang, Michael B. Chancellor in International Urogynecology Journal (2011)

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    Article

    Neurotoxin Use for Voiding Dysfunction

    Botulinum neurotoxin injection into the urethral sphincter has been shown to be effective in the treatment of neurogenic and non-neurogenic detrusor-sphincter dyssynergia. In this article, we review the ration...

    Hung-Jen Wang, Yao-Chi Chuang, Michael B. Chancellor in Current Bladder Dysfunction Reports (2011)

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    Article

    Study of Spectroscopy and Microstructure in Nanocrystalline Cr-Doped Fibers Grown by the Drawing-Tower Technique

    The spectroscopy and microstructure of Cr-doped fibers (CDFs) fabricated by the drawing-tower technique are investigated. The spontaneous emission spectrum exhibited broadband emission of 1.2 μm to 1.55 μm. High-...

    Yi-Chung Huang, Yen-Sheng Lin, Jau-Sheng Wang in Journal of Electronic Materials (2011)

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    Reference Work Entry At a glance

    Stochastic Frontier Models

    The stochastic frontier model was first proposed by Aigner, Lovell and Schmidt (1977) and Meeusen and van den Broeck (1977) in the context of production function estimation. The model extends the classical pro...

    Hung-Jen Wang in The New Palgrave Dictionary of Economics (2008)

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