Repository Interface for Overlaid Journal Archives: costs estimates and sustainability issues

The RIOJA project (http://www.ucl.ac.uk/ls/rioja) investigated the feasibility of an overlay journal model in collaboration with the arXiv and in the scientific domain of astrophysics and cosmology. Scientists in this community are active users of e-prints repositories such as the arXiv. Furthermore, they have the support of Professional Associations and Learned Societies that have been pioneers in adapting to new publishing models and in particular electronic journals. Long term access to information as well as maintaining provision to sustainable systems/services is important to various parties in the scholarly communication system: the creators of information, developers and managers of services, libraries, publishers, funders and also users. Although scientific journals have been in existence since the 18th century (Lawal, 2001), factors such as increased journal subscription prices in the last decades and the emergence of new technologies have triggered discussions on the potential of new business models for publishing research. Furthermore, the advent of the open access movement also contributed to exploration of the issues around free access to information and provision of sustainable services. Exploring aspects of sustainability is something that should be seen over a period of time and whether launching, converting or simply maintaining a new or existing system/service the needs of the community it serves should be taken into account. Scientific journal publishing is a complex process. Besides disseminating scientific knowledge, registration of a claim for new discovery and a quality “stamp” it also facilitates social factors. Besides making research findings available and contributing to the advancement of knowledge, publishing is also a means for measuring quality of the work of scientists, allocating funding, and acknowledging contributions to knowledge. In this report, we will try to provide an overview of a new publishing model, that of the overlay journal. We will discuss the use of the arXiv by scientists in astrophysics and cosmology as well as the role of professional associations and learned societies in the publishing process for this community. We will briefly explain the methods employed to compile this report. We will also briefly present the RIOJA toolkit before we try and identify costs in the publishing process associated with the functions of registration, certification, and awareness and archiving. This report does not aim to provide a comprehensive report of actual journal publishing costings. Despite the fact that there are studies in existence that tried to document costs associated with journal publishing, the information presented there rarely corresponds to the actual costs of individual journal functions. In addition, the interviews with publishers and editors did not reveal any substantial information about costings that have not already been reported in the literature or are available on some publishers' websites. Where appropriate, this report aims to acknowledge studies conducted previously as pointers to further reading and, where applicable, to compare reported findings to observations made during the development and implementation of the RIOJA toolkit (described below). We will conclude this report with some of the issues reported in the literature around sustainability of services and some brief suggestions for further work

Active learning in annotating micro-blogs dealing with e-reputation

Elections unleash strong political views on Twitter, but what do people really think about politics? Opinion and trend mining on micro blogs dealing with politics has recently attracted researchers in several fields including Information Retrieval and Machine Learning (ML). Since the performance of ML and Natural Language Processing (NLP) approaches are limited by the amount and quality of data available, one promising alternative for some tasks is the automatic propagation of expert annotations. This paper intends to develop a so-called active learning process for automatically annotating French language tweets that deal with the image (i.e., representation, web reputation) of politicians. Our main focus is on the methodology followed to build an original annotated dataset expressing opinion from two French politicians over time. We therefore review state of the art NLP-based ML algorithms to automatically annotate tweets using a manual initiation step as bootstrap. This paper focuses on key issues about active learning while building a large annotated data set from noise. This will be introduced by human annotators, abundance of data and the label distribution across data and entities. In turn, we show that Twitter characteristics such as the author's name or hashtags can be considered as the bearing point to not only improve automatic systems for Opinion Mining (OM) and Topic Classification but also to reduce noise in human annotations. However, a later thorough analysis shows that reducing noise might induce the loss of crucial information.Comment: Journal of Interdisciplinary Methodologies and Issues in Science - Vol 3 - Contextualisation digitale - 201

Preface Volume 66, Issue 5

AbstractThis part of the volume contains the papers accepted for presentation at the workshop on Unification in Non-Classical Logics (UNCL), co-located with ICALP 2002, which took place on July 12, 2002 in M\'alaga, Spain.The workshop was concerned with one of the most promising areas of research on non-classical logics and its applications. Unification in non-classical logics, with various approaches to handling generalised terms, has drawn more and more attention in recent years. So far, most popular lines of research include fuzzy unification of (conventional) databases and the use of fuzzy concepts in information retrieval.This workshop was conceived as a forum for the exchange of ideas relevant for the concept of unification in non-classical logics, including, but not limited to, the topics of: •Unification in multiple-valued and fuzzy logic programming.•Unification based on similarities and fuzzy equivalence relations.•Categorical unification.•Practical use of non-classical unification, e.g. in expert systems and information retrieval.The program committee selected six papers after a reviewing process in which each submitted paper received at least two reviews. Considerable effort was devoted for the evaluation of the submissions and to providing the authors with helpful feedback. The criteria for selection were originality, quality, and relevance to the topic of the workshop.Alsinet et al reviewed and compared two models which extend first order possibilistic logic in order to enable fuzzy unification. The extension considers mainly fuzzy constants, and in form of restrictions on existential quantifiers.Banerjee and Bujosa presented a non-classical interpretion of classical unification in terms of geometrical constructions over a suitable R-module M. The main result is that unification of two terms can be seen as the intersection of their corresponding affine varieties on M. This paves the way of using methods from computer algebra in the field of unification.In Eklund et al, substitutions and unifiers appear as constructs in Kleisli categories related to particular composed powerset term monads. It is shown that an often used similarity-based approach to fuzzy unification is compatible with the categorical approach, and can be adequately extended.Kutsia presented a unification procedure for a theory with individual and sequence variables, free fixed and flexible arity function symbols and patterns. These theories have been used in different contexts such as databases, rewriting, programming languages, or theorem proving.Medina et al introduced a formal model for similarity-based fuzzy unification in multi-adjoint logic programs. On this computational model, a similarity-based unification approach which provides a semantic framework for logic programming with different notions of similarity was constructed.Virtanen introduced unification in similarity-based logic programming. One of the crucial points is the definition of similarity degrees between sets, giving rise to [lambda]-interpretations. The selection of so called most significant terms again is one of the cornerstones of the paper.We would like to thank all those who submitted papers for consideration, the authors of accepted papers for their interesting discussions during the workshop, the additional referees for their careful work, and Inma Fortes from the local organising committee for her assistance

Preface

This volume contains the revised version of a selection of papers presented at the B 2011 Workshop, a satellite event of the 17th International Symposium on Formal Methods (FM 2011). It took place in Limerick, Ireland, on 21st June, 2011