Probing the Topological Properties of Complex Networks Modeling Short Written Texts

In recent years, graph theory has been widely employed to probe several language properties. More specifically, the so-called word adjacency model has been proven useful for tackling several practical problems, especially those relying on textual stylistic analysis. The most common approach to treat texts as networks has simply considered either large pieces of texts or entire books. This approach has certainly worked well—many informative discoveries have been made this way—but it raises an uncomfortable question: could there be important topological patterns in small pieces of texts? To address this problem, the topological properties of subtexts sampled from entire books was probed. Statistical analyses performed on a dataset comprising 50 novels revealed that most of the traditional topological measurements are stable for short subtexts. When the performance of the authorship recognition task was analyzed, it was found that a proper sampling yields a discriminability similar to the one found with full texts. Surprisingly, the support vector machine classification based on the characterization of short texts outperformed the one performed with entire books. These findings suggest that a local topological analysis of large documents might improve its global characterization. Most importantly, it was verified, as a proof of principle, that short texts can be analyzed with the methods and concepts of complex networks. As a consequence, the techniques described here can be extended in a straightforward fashion to analyze texts as time-varying complex networks.     

Applying the SOM model to text classification according to register and stylistic content

We report on the application of the Self-Organizing Map (SOM) classification method to the task of categorizing texts according to their register and the style of their author. The SOM has been selected as its performance in various data-mining applications has been found to be highly successful. Here, the method is evaluated against the task of clustering textual data which are corpora of texts written in the Greek language; the parameters used depict linguistically important structural properties of the texts. The experiments reported indicate that the SOM results are equivalent to those generated by statistical methods.     

Quantitative Analysis of Single Particle Trajectories: Mean Maximal Excursion Method

An increasing number of experimental studies employ single particle tracking to probe the physical environment in complex systems. We here propose and discuss what we believe are new methods to analyze the time series of the particle traces, in particular, for subdiffusion phenomena. We discuss the statistical properties of mean maximal excursions (MMEs), i.e., the maximal distance covered by a test particle up to time t. Compared to traditional methods focusing on the mean-squared displacement we show that the MME analysis performs better in the determination of the anomalous diffusion exponent. We also demonstrate that combination of regular moments with moments of the MME method provides additional criteria to determine the exact physical nature of the underlying stochastic subdiffusion processes. We put the methods to test using experimental data as well as simulated time series from different models for normal and anomalous dynamics such as diffusion on fractals, continuous time random walks, and fractional Brownian motion.     

Moments of Hierarchy: Constructing Social Stratification by Means of Language, Food, Space, and the Body in Pohnpei, Micronesia

In this paper I examine relationships between multiple semiotic modes used to construct hierarchy, and I show the importance of going beyond our traditional notion of language to look at how social actors employ a range of semiotic resources in organizing and interpreting social relations. Using examples from Pohnpei, Micronesia, I show how notions of superior and inferior are compounded through several sign systems—spatial relations, food sharing, the body, and language. These systems act oppositionally as well as cooperatively to produce situated ideas of social inequality, ideas built out of disequilibrium of bodies in space, of referents in language, and distribution of resources, as well as contradictions in the interactions of these signs. The compounding of signs not only recruits multiple sensory modes and perspectives in the exposition of hierarchical relations, but entails a notion of the contradictory nature of status relations. Using examples from a Pohnpeian feast, I explore the creative interplay of sign systems in the construction of "moments" of hierarchy in a large, public setting and discuss how through the practice of title-giving, which virtually every adult member of the society participates in, a particular idea of social inequality, built out of multiple sign systems, is mapped onto each body, [language, interaction, politics, Oceania, social stratification, hierarchy]     

TLINKAGE-IMPRINT: a model-based approach to performing two-locus genetic imprinting analysis

OBJECTIVES: Imprinting refers to the expression of only one copy of a gene pair, which is determined by the parental origin of the copy. Imprinted genes play a role in the development of several complex diseases, including cancers and mental disorders. In certain situations, two-trait-loci models are shown to be more powerful than one-trait-locus models. However, no current methods use pedigree structure efficiently and perform two-locus imprinting analyses. In this paper, we apply the Elston-Stewart algorithm to the parametric two-trait-loci imprinting model used by Strauch et al. [2000] to obtain a method for qualitative trait linkage analyses that explicitly models imprinting and can be applied to large pedigrees. METHODS: We considered a parametric approach based on 4 x 4 penetrance matrix to account for imprinting and modified TLINKAGE software to implement this approach. We performed simulation studies using a small and a large pedigree under dominant and imprinted and dominant or imprinted scenarios. Furthermore, we developed a likelihood ratio-based test for imprinting that compares the logarithm of odds (LOD) score obtained using the two-locus imprinting model with that obtained using the standard two-locus model that does not allow for imprinting. RESULTS: In simulation studies of three scenarios where the true mode of inheritance included imprinting, accurate modeling through the proposed approach yielded higher LOD scores and better recombination fraction estimates than the traditional two-locus model that does not allow for imprinting. CONCLUSIONS: This imprinting model will be useful in identifying the genes responsible for several complex disorders that are potentially caused by a combination of imprinted and non-imprinted genes.     

Textual self‐authorization

This article examines some of the pragmatic strategies by which certain texts render themselves and are rendered so authoritative as to legitimate representations of reality and the stolidity of the reality that lies behind them. My primary focus is on what I call indexical dramas (i.e. the pragmatic and meta‐pragmatic play) that support such self‐arrogating texts, particularly Scripture, as read by American Fundamentalists, and, to a lesser extent, the American Declaration of Independence and the United States Constitution. I argue that performatives and their uptake, including self‐arrogation, are dramatic events and that the attention given to their denouement – the performative utterance itself — masks the complex, at times contradictory, play of indexicals that constitute, or at least highlight, the very felicity conditions on which their success depends. In other words, the fragility of performatives is deflected by their denouement. Some of the defensive strategies that mask the fragility of textual self‐arrogation are: the establishment of the authority of the author of the performative; legitimation of sources of textual cohesiveness and hermeneutic practices; citationalism; its temporality; and perlocutionary effacement – the forgetting or ignoring, except in moments of crisis, of the fragility of performative acts and their uptake. I ask whether that forgetting enhances the illocutionary force of the target text over its history. I further suggest that Fundamentalists’ insistence on making their lives as biblical as possible gives performative force to their reading of Scripture.     

Transnational Identities and the Subversion of the Italian Language in Geneviève Makaping, Christiana de Caldas Brito, and Jarmila Očkayová

In this article I analyze literary works written in the Italian language by three women authors: Geneviève Makaping (who migrated to Italy from Cameroon), Christiana de Caldas Brito (from Brazil) and Jarmila Očkayová (from Slovakia). In these texts migration is not only a biographical experience, it is an existential condition: a kind of critical consciousness where knowledge and behaviour are not taken for granted. The article focuses on the different strategies adopted by the three migrant writers to subvert the normativity of language in order to represent their experience of crossing different physical and/or metaphorical borders. According to them, this experience transforms their subjectivity in a space open to multiple belongings, turning the fragmentation of their identity into a source of empowerment.