A Note on High-Dimensional Linear Regression With Interactions

The problem of interaction selection in high-dimensional data analysis has recently received much attention. This note aims to address and clarify several fundamental issues in interaction selection for linear regression models, especially when the input dimension p is much larger than the sample size n. We first discuss how to give a formal definition of “importance” for main and interaction effects. Then we focus on two-stage methods, which are computationally attractive for high-dimensional data analysis but thus far have been regarded as heuristic. We revisit the counterexample of Turlach and provide new insight to justify two-stage methods from the theoretical perspective. In the end, we suggest new strategies for interaction selection under the marginality principle and provide some simulation results.     

从瑶族历史看边缘的兴起——《另类中国:瑶族及其民族归属政治》评介

美国人类学家李瑞的《另类中国:瑶族及其民族归属政治》从中心-边缘的理论命题出发,关注作为想象中的边缘力量的兴起,探讨了瑶族在民族国家进程中的角色和命运,为从边缘看中心的民族互动和民族认同研究提供了重要借鉴.     

Invariance and factorial models

Two factors having the same set of levels are said to be homologous. This paper aims to extend the domain of factorial models to designs that include homologous factors. In doing so, it is necessary first to identify the characteristic property of those vector spaces that constitute the standard factorial models. We argue here that essentially every interesting statistical model specified by a vector space is necessarily a representation of some algebraic category. Logical consistency of the sort associated with the standard marginality conditions is guaranteed by category representations, but not by group representations. Marginality is thus interpreted as invariance under selection of factor levels ( I -representations), and invariance under replication of levels ( S -representations). For designs in which each factor occurs once, the representations of the product category coincide with the standard factorial models. For designs that include homologous factors, the set of S -representations is a subset of the I -representations. It is shown that symmetry and quasi-symmetry are representations in both senses, but that not all representations include the constant functions (intercept). The beginnings of an extended algebra for constructing general I -representations is described and illustrated by a diallel cross design.     

The Computer Analysis of Factorial Experiments: In Memoriam—Frank Yates

The responses to a recent paper by Dallal in this journal are evaluated by reference to the ideas of Frank Yates. It is concluded that much unnecessary complication has been introduced into the computer analysis of linear models by (1) the imposition of constraints on parameters, (2) neglect of marginality relations in forming hypotheses, and (3) confusion between the form of noncentrality parameters and hypotheses.     

Strange Buddhas and the King of the Monks: Locating History and Community in a Muslim State

In this paper I discuss the way in which ethnic and cultural minorities articulate a sense of community through the production and negotiation of historical agency. The Thai Buddhist villagers of Kelantan live in a predominantly Malay and Muslim state along Malaysia's eastern seaboard. Although possessing few myths of common origin, these villagers use a myriad of autonomous reckonings of the past in constructing a sense of cultural distinctiveness in the modern Malaysian nation state. The past is often spoken of by Thai villagers in the guise of anecdotal stories which encapsulate the dizzying array of relationships the community is enmeshed in. My paper shows how these stories are meaning filled texts by which villagers understand their marginal identity. I conclude by arguing that anthropologists should pay close attention to the minutiae of disjunctured histories that permeate the lives of men and women everywhere as a valuable means of making sense of contemporary social realities.     

Crafting Organization

The recent shift in attention away from organization studies as science has allowed for consideration of new ways of thinking about both organization and organizing and has led to several recent attempts to 'bring down' organizational theorizing. In this paper, we extend calls for organization to be represented as a creative process by considering organization as craft. Organizational craft, we argue, is attractive, accessible, malleable, reproducible, and marketable. It is also a tangible way of considering organization studies with irreverence. We draw on the hierarchy of distinctions among fine art, decorative art, and craft to suggest that understanding the organization of craft assists in complicating our understanding of marginality. We illustrate our argument by drawing on the case of a contemporary Australian craftworks and marketplace known initially as the Meat Market Craft Centre ('MMCC') and then, until its recent closure, as Metro! Stella Minahan was a board member and then the Chief Executive Officer of the Metro! Craft Centre     

Asian adolescent and young adult adoptees' psychological well-being: Examining the mediating role of marginality

Adolescent adoptees from an ethnic minority background different from that of their adoptive parents can face unique challenges to their psychosocial adjustment that may include, for some, a sense of marginality and low self-esteem. Using a web-based survey design with a sample of 100 internationally adopted Asian adolescent and young adults, the present study examined how feelings of marginality mediate the relationship between ethnic and racial socialization and psychological well-being among Asian adoptees. The results showed that (a) supports for racial socialization decreased adoptees' feeling of marginality and thereby, increased their positive sense of self; and (b) ethnic socialization was not related to feelings of marginality and self-esteem. This study illustrates the importance of providing post adoption services addressing racial socialization issues. Further, adoptive parents should teach their children how to deal with racial prejudice and discrimination, and prepare them by helping them to develop positive coping strategies.     

(Un)caring communities: Processes of marginalisation and access to formal and informal care and assistance in rural Russia

The marginality of rural life, understood in structural, economic, political and geographic terms, has been an underlying theme in both historical and contemporary studies of the Russian countryside. Much less attention has been paid to marginality as relational and the moral discourses of (un)belonging and (un)deservingness through which moral centres and peripheries are constructed within rural Russian contexts. This paper explores the ways in which both fixed, structural and constructed, personalised explanations of hardship are employed by rural people and how these relate to processes of integration into or exclusion from ‘caring’ and ‘moral’ communities. Drawing on ethnographic fieldwork conducted in Burla village, western Siberia, in 2008-10, and focusing primarily on the activities of the Centre for Social Assistance to Families and Children located there, the paper discusses the ways in which affiliation with the ‘moral centre’ facilitates access to both formal and informal forms of care and assistance from which those at the ‘moral periphery’ are more often excluded.     

Differentiating,Collaborating, Outdoing: Nordic Identity and Marginality in the Contemporary World

This article compares the interplay between Europe and Scandinavian countries with interactions at other margins, and speculates on the prospects for Nordic identity. It uses an idea of the possibilities inherent in the "marginality" of a society, applying that conception to situations past and present. A summary exposition indicates how Scandinavian countries have negotiated their marginality in a "Nordic posture" of political independence and economic and cultural ties to "more advanced" societies. These interactions with Europe are then compared with other contemporary margins (i.e., ex-colonized societies, ex-soviet bloc countries, EU states, countries experiencing globalization). While similar, Nordic societies are distinctly more successful in exploiting marginality: practiced in cooperating or emulating "Europe" while sometimes finding space to outdo it. This article thus suggests continuing vigor in some version of Nordic distinctiveness. The late 20th century decline of confidence in a separate Nordic identity need not therefore end Scandinavia's advantageous position on the margins.