Entity Recognition at First Sight: Improving NER with Eye Movement Information

Previous research shows that eye-tracking data contains information about the lexical and syntactic properties of text, which can be used to improve natural language processing models. In this work, we leverage eye movement features from three corpora with recorded gaze information to augment a state-of-the-art neural model for named entity recognition (NER) with gaze embeddings. These corpora were manually annotated with named entity labels. Moreover, we show how gaze features, generalized on word type level, eliminate the need for recorded eye-tracking data at test time. The gaze-augmented models for NER using token-level and type-level features outperform the baselines. We present the benefits of eye-tracking features by evaluating the NER models on both individual datasets as well as in cross-domain settings.Comment: Accepted at NAACL-HLT 201

Characteristics of Foreign R&D Strategies of Swiss Firms: Implications for Policy

The aim of the paper is, firstly, to identify a number of strategies Swiss firms pursue by performing foreign R&D, expecting that firms, in many instances, are driven by a combination of several motives (mixed strategies). Secondly, we ask whether foreign and domestic R&D are substitutes or complements. Thirdly, we draw some policy conclusions based on results for direct and indirect home-country effects of foreign R&D. By applying cluster analysis, we identified four specific patterns of motives of foreign R&D. In a second step, we investigated whether these clusters effectively may be interpreted as specific types of R&D strategies. To this end, the clusters were characterised in terms of a large number of variables, which, according to the OLI paradigm of FDI, determine foreign R&D. We found that the patterns of the four clusters systematically differ with respect to these theory-related variables. Some clusters represent, in terms of motives, broad-based mixed strategies, whereas others are strongly focused. It turns out that foreign R&D strategies that primarily aim at exploiting capabilities of the domestic headquarters dominate, whereas cost-reducing strategies are of very minor importance. In case of the other two strategies knowledge sourcing is a constituent element, in the first one, knowledge sourcing is at the core, in the second case it is an important element in the frame of a broad-based strategy. The relative importance of the four strategies implies that, on balance, foreign and domestic R&D are complements. Notwithstanding this positive result, it is sensible to take policy actions supporting the economy to capitalise even more on outward FDI in R&D. Policy basically should aim at securing the attractiveness of Switzerland as a location for R&D-intensive headquarters of firms performing foreign R&D, and at enhancing knowledge spillovers from headquarter companies to other domestic firms. The five categories of measures we recommend are part of a framework-oriented policy design rather than of a more interventionist concept.Internationalisation of R&D; Motives of foreign R&D; Foreign R&D strategies; Knowledge spillovers; Home-country effects of outward FDI in R&D

The traces of anisotropic dark energy in light of Planck

We study a dark energy model with non-zero anisotropic stress, either linked to the dark energy density or to the dark matter density. We compute approximate solutions that allow to characterise the behaviour of the dark energy model and to assess the stability of the perturbations. We also determine the current limits on such an anisotropic stress from the cosmic microwave background data by the Planck satellite, and derive the corresponding constraints on the modified growth parameters like the growth index, the effective Newton's constant and the gravitational slip.Comment: 29 pages, 10 figures; matches version accepted for publication in JCA

Early dark energy from zero-point quantum fluctuations

We examine a cosmological model with a dark energy density of the form $\rho_{DE}(t)=\rho_X(t)+\rho_Z(t)$, where $\rho_X$ is the component that accelerates the Hubble expansion at late times and $\rho_Z(t)$ is an extra contribution proportional to $H^2(t)$. This form of $\rho_Z(t)$ follows from the recent proposal that the contribution of zero-point fluctuations of quantum fields to the total energy density should be computed by subtracting the Minkowski-space result from that computed in the FRW space-time. We discuss theoretical arguments that support this subtraction. By definition, this eliminates the quartic divergence in the vacuum energy density responsible for the cosmological constant problem. We show that the remaining quadratic divergence can be reabsorbed into a redefinition of Newton's constant only under the assumption that the energy-momentum tensor of vacuum fluctuations is conserved in isolation. However, in the presence of an ultra-light scalar field $X$ with $m_X<H_0$, as typical of some dark energy models, the gravity effective action depends both on the gravitational field and on the $X$ field. In this case general covariance only requires the conservation of the total energy-momentum tensor, including both the classical term $T^X_{\mu\nu}$ and the vacuum expectation value of T_{\mu\nu}. If there is an exchange of energy between these two terms, there are potentially observable consequences. We construct an explicit model with an interaction between $\rho_X$ and $\rho_Z$ and we show that the total dark energy density $\rho_{DE}(t)=\rho_X(t)+\rho_Z(t)$ always remains a finite fraction of the critical density at any time, providing a specific model of early dark energy. We discuss the implication of this result for the coincidence problem and we estimate the model parameters by means of a full likelihood analysis using current CMB, SNe Ia and BAO data.Comment: 7 pages, 3 figures; v3: improved discussion, references adde

Determinants of International Activities: Are SMEs Different?

In this paper we econometrically investigate the factors determining the choice of a specific internationalisation strategy. We distinguish four strategies, ranging from "serving foreign markets through exports only” up to "exporting and locating abroad several business functions such as distribution, production and R & D”. These strategies are evaluated against the reference category "domestic sales only” (multinomial logit model). The analysis, to a large extent, confirms Dunning's well-known OLI paradigm. O-advantages turn out to be the main drivers of internationalisation, irrespective of firm size and internationalisation strategy. However, the knowledge-base on which O-advantages of smaller firms rests is more narrow than that of large companies. Whereas the former rely, in relative terms, primarily on capabilities related to incremental innovations, the latter draw to a higher extent on assets enabling them to be competitive in terms of far-reaching innovations. L-advantages (wages, regulatory framework, etc.) primarily are relevant in case of small firms; but even for this size class, O-advantages are dominan

Reconsidering the risk assessment concept: <br>Standardizing the impact description as a building block for vulnerability assessment

Risk assessments for natural hazards are becoming more widely used and accepted. Using an extended definition of risk, it becomes obvious that performant procedures for vulnerability assessments are vital for the success of the risk concept. However, there are large gaps in knowledge about vulnerability. To alleviate the situation, a conceptual extension of the scope of existing and new models is suggested. The basis of the suggested concept is a stadardization of the output of hazard assessments. This is achieved by defining states of the target objects that depend on the impact and at the same time affect the object's performance characteristics. The possible state variables can be related to a limited set of impact descriptors termed generic impact description interface. The concept suggests that both hazard and vulnerability assessment models are developed according to the specification of this interface, thus facilitating modularized risk assessments. Potential problems related to the application of the concept include acceptance issues and the lacking accuracy of transformation of outputs of existing models. Potential applications and simple examples for adapting existing models are briefly discussed

Theoretical Priors On Modified Growth Parametrisations

Next generation surveys will observe the large-scale structure of the Universe with unprecedented accuracy. This will enable us to test the relationships between matter over-densities, the curvature perturbation and the Newtonian potential. Any large-distance modification of gravity or exotic nature of dark energy modifies these relationships as compared to those predicted in the standard smooth dark energy model based on General Relativity. In linear theory of structure growth such modifications are often parameterised by virtue of two functions of space and time that enter the relation of the curvature perturbation to, first, the matter over-density, and second, the Newtonian potential. We investigate the predictions for these functions in Brans-Dicke theory, clustering dark energy models and interacting dark energy models. We find that each theory has a distinct path in the parameter space of modified growth. Understanding these theoretical priors on the parameterisations of modified growth is essential to reveal the nature of cosmic acceleration with the help of upcoming observations of structure formations.Comment: 10 pages, 5 figure