A note on the connection between factorial series distribution and zero-truncated power series distribution

Summary

The main purpose of this note is to call attention to the close relationship between the problem of estimating the parameter of a zero-truncated power series distribution and the problem of estimating the parameter of an associated factorial series distribution. We also extend a known recurrence property for the Poisson case to the binomial and negative binomial cases.     

Run length and the predictability of stock price reversals

Survival analysis is used to estimate time‐varying probabilities of price reversals using daily data for the Australian All Ordinaries Price Index. Lagged price changes lead to persistence (shortening) in a price run if they are of the same (opposite) sign as the run. An increase in the number of runs observed in the previous 30 days also increases the probability of price reversal. The predictive accuracy of the models is assessed using a probability scoring rule. Consistent with market efficiency, the estimated models are less accurate than the random walk model in predicting the length of individual price runs out‐of‐sample.     

Nonlinear stochastic effects of substitution — an evolutionary approach

Technological innovations have been investigated by means of substitution and diffusion as well as evolution models, each of them dealing with different aspects of the innovation problem. In this paper we follow the well known research traditions on self-organisation models of complex systems. For the first time in the literature we show the existence of a specific niche effect, which may occur in the first stage of establishment of a new technology. Using a stochastic Master equation approach, we obtain analytical expressions for the survival probabilities of a new technology in smaller or larger ensembles. As a main result we demonstrate how a hyperselection situation might be removed in a stochastic picture and thresholds against the prevailing of a new technology in a step-by-step process can be overcome.     

向美而存的人生——论福柯“生存美学”思想的当代意义

当下单一的生存观,造成了空前的精神危机,个体的生命呈现着心甘情愿的被物质功利奴役的状态,导致了近现代以来个体生命普遍的虚无主义以及伴随一生的焦虑感。福柯的"生存美学"可以让个体重新打量自己的生活心态与世界的关系,以追求个体美的生命体验的心态去生存,则生命会呈现出更辽阔的风景。     

Self-employment of Chinese rural labor force: Subsistence or opportunity?—An empirical study based on nationally representative micro-survey data

Self-employment is an essential form of non-agricultural employment, and its nature has been rarely identified in recent studies. From the perspectives of the human capital, social capital, and family assets of rural laborers, this study focuses on determining self-employment by using the nationally representative data on the rural labor force in China. Through the static comparative analysis between three groups of laborers in self-employment, wage employment, farming, and the dynamic comparative analysis of laborers entering into and exiting from self-employment, the study shows that self-employment of rural laborers in China is almost opportunity-driven or moving toward opportunistic self-employment. Human capital, social capital, and family assets promote rural laborers shifting from wage employment to self-employment and stimulate the establishment of high-value enterprises. The study suggests that local governments should increase the investments in rural education and vocational skills training and strengthen the availability of rural credit to lay a good foundation for self-employment activities in rural areas.     

Survival of full versus partial acquisitions: The moderating role of firm’s internationalization experience,cultural distance,and host country context characteristics

The high divestment rates of acquired foreign units indicate challenges connected to planning and management of foreign acquisitions. In this paper we analyze the moderating effect of internal and external variables on the relationship between acquirers’ ownership strategy and survival of acquired foreign units. We test our hypotheses on a sample of 1275 acquisitions conducted by Finnish firms in various countries during the period 1980–2005. The results indicate that the probability of survival does not differ significantly between full and partial acquisitions. We further find that the likelihood of survival in full, relative to partial acquisitions, is positively associated with the acquisition-specific experience, but inversely related to general international and target country experience. The results also reveal that the positive impact of full acquisitions is stronger if the acquisitions are made in culturally similar countries, in less developed economies, and in markets where the country risk has increased after entry.     

Optimal model averaging forecasting in high-dimensional survival analysis

This article considers ultrahigh-dimensional forecasting problems with survival response variables. We propose a two-step model averaging procedure for improving the forecasting accuracy of the true conditional mean of a survival response variable. The first step is to construct a class of candidate models, each with low-dimensional covariates. For this, a feature screening procedure is developed to separate the active and inactive predictors through a marginal Buckley–James index, and to group covariates with a similar index size together to form regression models with survival response variables. The proposed screening method can select active predictors under covariate-dependent censoring, and enjoys sure screening consistency under mild regularity conditions. The second step is to find the optimal model weights for averaging by adapting a delete-one cross-validation criterion, without the standard constraint that the weights sum to one. The theoretical results show that the delete-one cross-validation criterion achieves the lowest possible forecasting loss asymptotically. Numerical studies demonstrate the superior performance of the proposed variable screening and model averaging procedures over existing methods.     

Behavioral equilibrium and evolutionary dynamics in asset markets

This paper analyzes a dynamic stochastic equilibrium model of an asset market based on behavioral and evolutionary principles. The core of the model is a non-traditional game-theoretic framework combining elements of stochastic dynamic games and evolutionary game theory. Its key characteristic feature is that it relies only on objectively observable market data and does not use hidden individual agents’ characteristics (such as their utilities and beliefs). A central goal of the study is to identify an investment strategy that allows an investor to survive in the market selection process, i.e., to keep with probability one a strictly positive, bounded away from zero share of market wealth over an infinite time horizon, irrespective of the strategies used by the other players. The main results show that under very general assumptions, such a strategy exists, is asymptotically unique and easily computable.     

初创战略导向对新创企业存活率的影响机制

新创企业初创阶段的战略导向对其未来存续具有持久影响,但具体影响机理有待论证。采用STROBE六维划分法,连续4年对D&B数据库中的抽样企业进行调研与“健康检查”,基于523家美国新创企业数据, 剖析6种初创战略导向对新创企业存活率的差异化影响机理。结果表明：竞争企图性战略持续消耗组织资源从而增加失败风险;分析性战略提升组织决策质量从而降低失败风险;防御性战略使组织积极运用科学管理方法与技术工具从而增加生存机会;前瞻性战略对新创企业存续没有显著影响;先动性战略推动组织创新从而开拓更佳发展前景;风险承担性战略使组织不断学习、广泛探索、保持领先,最大幅度地提高新创企业存活机率。     

我国基金投资者存在处置效应吗?——基于国内某大型开放式基金交易的研究

以基金为代表的机构投资者队伍在我国资本市场发挥着日益重要的作用,但有关基金投资者行为的研究还比较缺乏。本文利用国内某大型基金管理公司提供的基金投资者交易数据,运用生存模型研究了我国基金投资者的处置效应。实证结果显示我国基金投资者表现出明显的处置效应,同时,我们还发现男性投资者和投资经验丰富的投资者相对表现出较低程度的处置效应。进一步的研究发现投资者的处置效应是非理性的,它减少了基金投资者的投资收益。