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1.
We introduce two simple empirical approximate Bayes estimators (EABEs)—
and
—for estimating domain scores under binomial and hypergeometric distributions, respectively. Both EABEs (derived from corresponding marginal distributions of observed test scorex without relying on knowledge of prior domain score distributions) have been proven to hold -asymptotic optimality in Robbins' sense of convergence in mean. We found that, where
and
are the monotonized versions of
and
under Van Houwelingen's monotonization method, respectively, the convergence rate of the overall expected loss of Bayes risk in either
or
depends on test length, sample size, and ratio of test length to size of domain items. In terms of conditional Bayes risk,
and
outperform their maximum likelihood counterparts over the middle range of domain scales. In terms of mean-squared error, we also found that: (a) given a unimodal prior distribution of domain scores,
performs better than both
and a linear EBE of the beta-binomial model when domain item size is small or when test items reflect a high degree of heterogeneity; (b)
performs as well as
when prior distribution is bimodal and test items are homogeneous; and (c) the linear EBE is extremely robust when a large pool of homogeneous items plus a unimodal prior distribution exists.The authors are indebted to both anonymous reviewers, especially Reviewer 2, and the Editor for their invaluable comments and suggestions. Thanks are also due to Yuan-Chin Chang and Chin-Fu Hsiao for their help with our simulation and programming work. 相似文献
2.
Kolmogorov's axiomatization of probability includes the familiarratio formula for conditional probability:
0).$$
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Call this the ratio analysis of conditional probability. It has become so entrenched that it is often referred to as the definition of conditional probability.I argue that it is not even an adequate analysis of that concept. I prove what I call the Four Horn theorem, concluding that every probability assignment has uncountably many trouble spots. Trouble spots come in four varieties: assignments of zero togenuine possibilities; assignments of infinitesimals to such possibilities; vague assignments to such possibilities; and no assignment whatsoever to such possibilities. Each sort of trouble spot can create serious problems for the ratio analysis. I marshal manyexamples from scientific and philosophical practice against the ratio analysis. I conclude more positively: we should reverse the traditional direction of analysis. Conditional probability should be taken as the primitive notion, and unconditional probability should be analyzed in terms of it.
I'd probably be famous now If I wasn't such a good waitress.
Jane Siberry, Waitress 相似文献
3.
Dr. John B. Crozier 《Motivation and emotion》1980,4(2):143-148
In reference to recent work in aesthetics from a scientific perspective, Berlyne coined the phrase the new experimental aesthetics. Berlyne's contributions to this research area are discussed in terms of the philosophical, theoretical, and methodological issues central to the current literature. The paper concludes with a consideration of the future prospects for experimental aesthetics.This paper was presented at a symposium in honor of Daniel E. Berlyne at the annual meeting of the American Psychological Association, San Francisco, August 27, 1977. The presentation of this paper was supported by a grant from York University. 相似文献
4.
5.
Richard L. Veech Yoshihiro Kashiwaya M. Todd King 《Integrative psychological & behavioral science》1995,30(4):283-307
Living cells create electric potential force,E, between their various phases by at least three distinct mechanisms. Charge separation,
相似文献
6.
7.
M. C. Corballis 《Psychometrika》1971,36(3):243-249
SupposeD is a data matrix forN persons andn variables, and
is the matrix obtained fromD by expressing the variables in deviation-score form. It is shown that ifD has rankr,
will always have rank (r−1) ifr=N<n, otherwise it will generally have rankr. If
has ranks,D will always have ranks ifs=n, but ifs<n it will generally have rank (s+1). Thus two cases can arise, Case A in whichD has rank one greater than
, and Case B in whichD has rank equal to
. Implications of this distinction for analysis of cross products versus analysis of covariances are briefly indicated. 相似文献
8.
Jarosław Achinger 《Studia Logica》1986,45(3):293-300
Universality of generalized Alexandroff's cube
plays essential role in theory of absolute retracts for the category of , -closure spaces. Alexandroff's cube.
is an , -closure space generated by the family of all complete filters. in a lattice of all subsets of a set of power
.Condition P(, ,
) says that
is a closure space of all , -filters in the lattice (
),
.Assuming that P (, ,
) holds, in the paper [2], there are given sufficient conditions saying when an , -closure space is an absolute retract for the category of , -closure spaces (see Theorems 2.1 and 3.4 in [2]).It seems that, under assumption that P (, ,
) holds, it will be possible to givean uniform characterization of absolute retracts for the category of , -closure-spaces.Except Lemma 3.1 from [1], there is no information when the condition P (, ,
) holds or when it does not hold.The main result of this paper says, that there are examples of cardinal numbers, , ,
such that P (, ,
) is not satisfied.Namely it is proved, using elementary properties of Lebesgue measure on the real line, that the condition P (,
1, 2
) is not satisfied.Moreover it is shown that fulfillment of the condition is essential assumption in, Theorems 2.1 and 3.4 from [1] i.e. it cannot be eliminated. 相似文献
9.
Pierluigi Minari 《Studia Logica》1983,42(4):431-441
We give completeness results — with respect to Kripke's semantic — for the negation-free intermediate predicate calculi:
10.
Michael Levin 《Synthese》1990,85(1):115-138
It is argued that the general thesis of realism is ill-defined, as are various versions of its denial. Only specific theses of the form There areK's make clear sense. It is also argued that various efforts to deny realism always turn out to deny specific existential theses. Thus, it is argued, van Fraassen and Schwartz deny the existence of electrons. 相似文献
11.
Dimitri Ginev 《Human Studies》1998,21(3):259-271
Based on an analysis of double hermeneutics in the human sciences, a distinction between a weak and a strong rhetorical analysis of human-scientific research is introduced, taking account of the self-reflective character of hermeneutic interpretation. The paper argues that there are three hermeneutic topics in the research process for human-scientific experience, which are associated with applying specific rhetorical tools. The three topics are described under the following rubrics: (a) bridging the gap between experience-near and experience-distant concepts; (b) achieving integrity of the cultural objects dispersed in different interpretive strategies; and (c) taking into consideration that an important task of hermeneutic interpretation in human-scientific research is to give an account of the object's immanent narrative coherence. The paper is written in the conviction that a kind of re-methodologization of philosophical hermeneutics which does not rehabilitate epistemological foundationalism can provide a new philosophical identity to the human sciences. 相似文献
12.
J. Michael Dunn 《Studia Logica》1995,55(2):301-317
We give a set of postulates for the minimal normal modal logicK
+ without negation or any kind of implication. The connectives are simply , , , . The postulates (and theorems) are all deducibility statements . The only postulates that might not be obvious are
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