Infobox-to-text Generation with Tree-like Planning based Attention Network

We study the problem of infobox-to-text generation that aims to generate a textual description from a key-value table. Representing the input infobox as a sequence, previous neural methods using end-to-end models without order-planning suffer from the problems of incoherence and inadaptability to disordered input. Recent planning-based models only implement static order-planning to guide the generation, which may cause error propagation between planning and generation. To address these issues, we propose a Tree-like PLanning based Attention Network (Tree-PLAN) which leverages both static order-planning and dynamic tuning to guide the generation. A novel tree-like tuning encoder is designed to dynamically tune the static order-plan for better planning by merging the most relevant attributes together layer by layer. Experiments conducted on two datasets show that our model outperforms previous methods on both automatic and human evaluation, and demonstrate that our model has better adaptability to disordered input.

Migrant labour as space: Rhythmanalysing the agri-food industry

The UK agri-food industry is heavily dependent on migrant labour and, as result, the position and experiences of migrant workers have remained topics of research interest for over a decade. To date, a prolific body of research in the organisation studies literature has addressed the subordinate and exploited position of migrants against a backdrop of precarious terms and conditions of work. Studies have also extolled the scope for worker mobility and resistance, as well as explored the intersectional and non-reductive complexity of migrant life. Although offering valuable insights, these literatures present a disembedded portrayal of the agri-food industry, studying its regulatory provisions, everyday routines and work patterns in abstraction from the spaces within which they occur. Existing research has failed to recognise these processes as modes of space production, in line with Henri Lefebvre’s trialectic framework. This issue of Organization enables us to bring empirical and theoretical insights into this often neglected area, pertaining both to the study of migrant labour spaces and the identification of the rhythms through which these spaces are produced. Accordingly, our study combines Rudolf Laban’s ‘ontology of rhythm’ and Henri Lefebvre’s ‘rhythmanalysis’ methodology. Aided by our own positionality as former agri-food workers, we show how regulating, connecting and ‘dressage’ rhythms intersect agri-food space in a process of relational and multifaceted ‘ordering’, rather than static order. We contribute to the organisation studies literature by conceptualising the missing, spatial dimension in the agri-food migrant industry and demonstrating the value of rhythmanalysis as an underutilised methodology for its continued study.

Ultrafast time-resolved x-ray scattering reveals diffusive charge order dynamics in La2–xBaxCuO4

Charge order is universal among high-Tc cuprates, but its relation to superconductivity is unclear. While static order competes with superconductivity, dynamic order may be favorable and even contribute to Cooper pairing. Using time-resolved resonant soft x-ray scattering at a free-electron laser, we show that the charge order in prototypical La2−xBaxCuO4 exhibits transverse fluctuations at picosecond time scales. These sub–millielectron volt excitations propagate by Brownian-like diffusion and have an energy scale remarkably close to the superconducting Tc. At sub–millielectron volt energy scales, the dynamics are governed by universal scaling laws defined by the propagation of topological defects. Our results show that charge order in La2−xBaxCuO4 exhibits dynamics favorable to the in-plane superconducting tunneling and establish time-resolved x-rays as a means to study excitations at energy scales inaccessible to conventional scattering techniques.

HQET form factors for Bs → Klv decays beyond leading order

We compute semi-leptonic Bs decay form factors using Heavy Quark Effective Theory on the lattice. To obtain good control of the 1 /mb expansion, one has to take into account not only the leading static order but also the terms arising at O (1/mb): kinetic, spin and current insertions. We show results for these terms calculated through the ratio method, using our prior results for the static order. After combining them with non-perturbative HQET parameters they can be continuum-extrapolated to give the QCD form factor correct up to O (1/[see formula in PDF]) corrections and without O (αs(mb)n) corrections.

TYPICAL-MEDIUM THEORY OF MOTT–ANDERSON LOCALIZATION

The Mott and the Anderson routes to localization have long been recognized as the two basic processes that can drive the metal–insulator transition (MIT). Theories separately describing each of these mechanisms were discussed long ago, but an accepted approach that can include both has remained elusive. The lack of any obvious static symmetry distinguishing the metal from the insulator poses another fundamental problem, since an appropriate static order parameter cannot be easily found. More recent work, however, has revisited the original arguments of Anderson and Mott, which stressed that the key diference between the metal end the insulator lies in the dynamics of the electron. This physical picture has suggested that the "typical" (geometrically averaged) escape rate [Formula: see text] from a given lattice site should be regarded as the proper dynamical order parameter for the MIT, one that can naturally describe both the Anderson and the Mott mechanism for localization. This article provides an overview of the recent results obtained from the corresponding Typical-Medium Theory, which provided new insight into the the two-fluid character of the Mott–Anderson transition.