基于随机森林算法的叠前流体识别

虽然叠前反演技术能够获得多种流体识别因子,但是仅利用单一的流体识别因子进行储层预测通常会带来多解性问题。目前根据多种流体识别因子对储层进行综合解释已成为一种新的趋势,但大部分方法对专家及其经验存在较强的依赖。鉴于此,将随机森林算法引入储层流体识别。首先基于测井数据优选输入特征(流体识别因子),并分别研究输入特征数量和不同特征组合对算法预测结果的影响;然后利用该算法对输入特征与井中储层信息之间的非线性关系进行学习;最后根据学习结果对储层进行综合判别,实现多种流体识别因子的综合利用。该算法削弱了单一流体识别因子所引起的多解性,提高了储层流体识别的精度与可靠性。应用实例表明,通过随机森林算法对5种流体识别因子与井中储层信息进行综合学习,达到了对含气储层和含水储层进行准确识别的目的。     

Is There Life After the Death of the Computational Theory of Mind?

In this paper, I explore the implications of Fodor’s attacks on the Computational Theory of Mind (CTM), which get their most recent airing in The Mind Doesn’t Work That Way. I argue that if Fodor is right that the CTM founders on the global nature of abductive inference, then several of the philosophical views about the mind that he has championed over the years founder as well. I focus on Fodor’s accounts of mental causation, psychological explanation, and intentionality.     

Action-Based Causal Reasoning

In this paper we present a causal theory based on aninterventionist conception of causality, i.e., a preference toselect causes among a set of actions which an agent has the abilityto perform or not to perform (free will). The most interestingproposals encountered in the literature, in nonmonotonic reasoning,all revolve around the ordered notion of similarity, abnormality,preference etc... but do not provide a full-fledgedsolution to the problem of the concrete definition of this order. Inour approach we relate the notion of action to norms (what isnormally the case when an action is undertaken, what is normally theoutcome of that action) and considering reasonable assumptions, weshow the existence and uniqueness of the set of voluntary causes foran observed effect (explanation problem). Moreover, the approach advocated in this paper handles ramifications correctly.     

人记忆特性在产品设计中应用的研究

在分析人记忆特点的基础上,对影响记忆的因素进行了有利于设计应用的划分,并提出了主观解释在记忆设计中的应用的观点,以及研究记忆设计的目的及其评价.     

A Model for Adapting Explanations to the User's Likely Inferences

In order to generate natural, high quality textual presentations in technical domains, good explanations must not only be adapted to the knowledge attributed to the intended audience, but they must also take into account the inferential capabilities of the addressees. In this paper, we present a model for anticipating contextually-motivated inferences addressees are likely to draw. This model is used to motivate choices in presenting or omitting individual pieces of information; it takes into account the addressees' domain expertise and expectations about logical consequences of purposefully presented information. Several kinds of empirical evidence are incorporated into a text planning process that aims at exploiting conversational implicature, so that a most suitable portion of the plan can be selected for being uttered explicitly. This way, our method adds to discourse planners based on Rhetorical Structure Theory (RST) the ability to omit easily inferable information. Thus, it overcomes one of the main shortcomings of RST. In the course of this process, rules anticipating user inferences are invoked to determine contextually justified derivability of information. In this manner, text variants can be composed on the basis of a text plan entailing annotations about the inferability of pieces of information. Moreover, pragmatically-motivated preference criteria can be used to choose among several plausible variants. The model is formulated in a reasonably domain-independent way, so that the rules expressing aspects of conversational implicature can be incorporated into typical RST-based text planners.     

Explanation in Recommender Systems

There is increasing awareness in recommender systems research of the need to make the recommendation process more transparent to users. Following a brief review of existing approaches to explanation in recommender systems, we focus in this paper on a case-based reasoning (CBR) approach to product recommendation that offers important benefits in terms of the ease with which the recommendation process can be explained and the system’s recommendations can be justified. For example, recommendations based on incomplete queries can be justified on the grounds that the user’s preferences with respect to attributes not mentioned in her query cannot affect the outcome. We also show how the relevance of any question the user is asked can be explained in terms of its ability to discriminate between competing cases, thus giving users a unique insight into the recommendation process.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

无人值班变电站系统调试规范解读

对无人值班变电站系统调试的原则和重点进行了分析,根据不同的调试阶段,对各阶段的核心内容和注意事项进行了明确规定,以不带电顺序控制试验作为实例,对调试的核心内容进行了支撑。     

木门产品标准分析与解读

介绍我国木门产品相关标准及企业如何选择适合本企业的标准,对JG/T 122—2000《建筑木门、木窗》检验项目的部分条款进行了分析与解读。