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台灣地區中型速克達機車市場供需模型之分析:狀態空間卡曼過濾器之應用

An Application of the State Space Model by Using Kalman Filter: The Analysis of the Demand and Supply Model of Medium-size Scooter Market in Taiwan

摘要


本文以狀態空間模型,估計中型速克達機車市場的外生變數(包括供給、需求面)與內生變數(銷售量及平均銷售價格)的動態關係;首先探討中型速克達機車市場的供需模型,並將該市場的供需模型予以特定化,再經由還原式(reduced form)與狀態空間模型的結合,成功的將狀態空間模型應用在中型速克達機車的市場上。本研究利用經濟部統計處所編算之中華民國台灣地區工業生產統計月報資料及廠商提供之資料進行測試,發現以狀態空間模型估計的結果相當優異,比傳統的還原式更能表現出中型速克達機車市場的外生變數與內生變數之間的關係。 在研究的結果中發現,市場上的供給曲線的斜率,隨時間的樊動而不斷的在下降,這與廠商製造技術的進步,使得廠商更適合大規模的生產有關。另外薪資的變動對廠商供給的影響,有愈來愈高的趨勢。

並列摘要


This research investigates relationship between the exogenous variables of supply and demand functions, and endogenous variables of price and quantity, by the state space model (SSM). First, we investigate the demand-supply model of scooter motorcycle market and then identified it. Next, through the combination of the reduced form and the state space model, we successfully apply the SSM on the medium scooter market. We use the monthly data, for the last 12 years, to test the model and find that the estimated result of SSM is better than that of previous research which uses the reduced form alone. This research finds that the slope of the supply function is decreased over time since the technology advancement favors the large production volume. The other finding is that the increasing influence of the wage coefficient on the supply.

被引用紀錄


張秀蓉(2014)。台灣地區機車製造業產業分析及營運績效之研究〔碩士論文,國立中央大學〕。華藝線上圖書館。https://www.airitilibrary.com/Article/Detail?DocID=U0031-0412201512030410

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