摘要翻译：
印度各地的茶叶拍卖以在线公开拍卖的方式进行。在拍卖之前，茶叶的样品被发送给潜在的竞拍者和一组品茶者。卖方的底价是品茶师估价的一个保密函数，它也可能作为一个信号给投标人。在这篇论文中，我们利用来自一家茶叶拍卖行J·托马斯的茶尘类别的数据集，在2018-2019年的49周时间跨度内，考虑到以下目标:$\bullet$目标分类不同类别的茶尘(25)，根据来源和等级，将茶尘分类成一个更易于管理和稳健的分类。$\bullet$预测哪些茶批将在拍卖市场上出售，以及一个最终价格的模型。$\bullet$，研究茶叶拍卖拍品的价格分布和比例。$\bullet$对从品茶师估价中获得的信息及其对最终拍卖价格的影响进行详细分析。所使用的模型在交叉验证方面显示了各种有希望的结果。通过对估价与实际价格之间因果关系的分析，确立了估价的重要性。作者希望通过对拍卖过程中各种因素的研究和对其作用的详细分析，对参与拍卖博弈者的决策过程有一定的指导意义，为消除人工干预，实现拍卖过程的自动化铺平道路，提高市场上的茶叶质量。
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英文标题：
《The Information Content of Taster's Valuation in Tea Auctions of India》
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作者：
Abhinandan Dalal, Diganta Mukherjee and Subhrajyoty Roy
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最新提交年份：
2020
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分类信息：

一级分类：Statistics        统计学
二级分类：Applications        应用程序
分类描述：Biology, Education, Epidemiology, Engineering, Environmental Sciences, Medical, Physical Sciences, Quality Control, Social Sciences
生物学，教育学，流行病学，工程学，环境科学，医学，物理科学，质量控制，社会科学
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一级分类：Economics        经济学
二级分类：Econometrics        计量经济学
分类描述：Econometric Theory, Micro-Econometrics, Macro-Econometrics, Empirical Content of Economic Relations discovered via New Methods, Methodological Aspects of the Application of Statistical Inference to Economic Data.
计量经济学理论，微观计量经济学，宏观计量经济学，通过新方法发现的经济关系的实证内容，统计推论应用于经济数据的方法论方面。
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英文摘要：
  Tea auctions across India occur as an ascending open auction, conducted online. Before the auction, a sample of the tea lot is sent to potential bidders and a group of tea tasters. The seller's reserve price is a confidential function of the tea taster's valuation, which also possibly acts as a signal to the bidders.   In this paper, we work with the dataset from a single tea auction house, J Thomas, of tea dust category, on 49 weeks in the time span of 2018-2019, with the following objectives in mind:   $\bullet$ Objective classification of the various categories of tea dust (25) into a more manageable, and robust classification of the tea dust, based on source and grades.   $\bullet$ Predict which tea lots would be sold in the auction market, and a model for the final price conditioned on sale.   $\bullet$ To study the distribution of price and ratio of the sold tea auction lots.   $\bullet$ Make a detailed analysis of the information obtained from the tea taster's valuation and its impact on the final auction price.   The model used has shown various promising results on cross-validation. The importance of valuation is firmly established through analysis of causal relationship between the valuation and the actual price. The authors hope that this study of the properties and the detailed analysis of the role played by the various factors, would be significant in the decision making process for the players of the auction game, pave the way to remove the manual interference in an attempt to automate the auction procedure, and improve tea quality in markets.
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PDF链接：
https://arxiv.org/pdf/2005.02814