Search results for "information retrieval"
showing 10 items of 924 documents
Assisted labeling for spam account detection on twitter
2019
Online Social Networks (OSNs) have become increasingly popular both because of their ease of use and their availability through almost any smart device. Unfortunately, these characteristics make OSNs also target of users interested in performing malicious activities, such as spreading malware and performing phishing attacks. In this paper we address the problem of spam detection on Twitter providing a novel method to support the creation of large-scale annotated datasets. More specifically, URL inspection and tweet clustering are performed in order to detect some common behaviors of spammers and legitimate users. Finally, the manual annotation effort is further reduced by grouping similar u…
How do journals of different rank instruct peer reviewers? Reviewer guidelines in the field of management
2020
Current knowledge on peer review consists of general formulations of its goals and micro level accounts of its practice, while journals’ attempts to guide and shape peer review have hardly been investigated so far. This article addresses this gap by studying the content of the reviewer guidelines (RG) of 46 journals in the field of management, as editors may use guidelines to nudge reviewers considering all relevant criteria, properly, and consistently with the needs of the journal. The analysis reveals remarkable differences between the instructions for reviewers of journals of different rank. Average and low rank journals mostly use evaluation forms, they emphasize the empirical contribut…
Visibilidad, impacto y transferencia del conocimiento en revistas científicas de educación : la experiencia de Aula Magna 2.0
2020
Título, resumen y palabras clave en español e inglés Resumen basado en el de la publicación Disponible la versión en inglés Monográfico con el título: "Edición científica: 25 años de Relieve" El valor de la ciencia para la sociedad es indiscutible, pero para generar un impacto social y educativo, es indispensable saber transferir el conocimiento científico. Se analiza la relevancia y el impacto de la difusión de un artículo científico en el proceso de construcción de la ciencia y su transferencia a la sociedad. Se valora la irrupción de nuevos canales de difusión para el aumento de la visibilidad y la transferencia de los avances científicos, y se exploran las analíticas del blog académico …
ValWorkBench: an open source Java library for cluster validation, with applications to microarray data analysis.
2015
Background: Cluster analysis is one of the most well known activities in scientific investigation and the object of research in many disciplines, ranging from statistics to computer science. It is central to the life sciences due to the advent of high throughput technologies, e.g., classification of tumors. In particular, in cluster analysis, it is of relevance to assess cluster quality and to predict the number of clusters in a dataset, if any. This latter task is usually performed via internal validation measures. Despite their potentially important role, both the use of classic internal validation measures and the design of new ones, specific for microarray data, do not seem to have grea…
PyCellBase
2019
Python package for easy retrieval of biological data from heterogeneous sources.
VIRES: A distributed open architecture for pictorial database
2006
In this paper we describe VIRES (Visual Information Retrieval Extendible System) an open distributed pictorial database for image retrieval. The retrieval methods, pictorial indexing and data are distributed over the network. VIRES has been designed as an open architecture. The system is based on the concept of distributed model via dictionary in order to reach a good versatility without changing the kernel of VIRES.
Los trabajos sobre negociación colectiva publicados en revistas españolas antes de 1995 e incluidos en la base de datos ISOC. Acercamiento biliométri…
1997
Legal literature is one of the areas most neglected by bibliometric studies, both in Spa in and abroad. Within this context, the general aim of this note is to check the utility of national databases in the retrieval and overview of the legal literature published in Spanish journals. 447 papers on collective bargaining and allied subjects published before 1995 and included in ISOC database have been retrieved. Using a computer file of these papers, the distributions by years, number of authors per paper, institutions of origin, journals and specific subjects was analysed from a bibliometric approach. As a case study, distributions of the publications which have been used in a research paper…
Integration of Spatial processing and knowledge Processing through the Semantic Web Stack
2011
International audience; This paper presents the integration process of spatial technologies and Semantic Web technologies and its associated tool. The result of this work is a spatial query and rule engine of spatial. To do so, existing ontology with spatial elements is adjusted in order to process the spatial knowledge through spatial technologies. This paper outlines the methods and the processes of these adjustments and how results are returned by our tool. The SWRL and the SPARQL language are extended for spatial purpose and the existing OWL ontology wine is used as an application example.
Alignment-Free Sequence Comparison over Hadoop for Computational Biology
2015
Sequence comparison i.e., The assessment of how similar two biological sequences are to each other, is a fundamental and routine task in Computational Biology and Bioinformatics. Classically, alignment methods are the de facto standard for such an assessment. In fact, considerable research efforts for the development of efficient algorithms, both on classic and parallel architectures, has been carried out in the past 50 years. Due to the growing amount of sequence data being produced, a new class of methods has emerged: Alignment-free methods. Research in this ares has become very intense in the past few years, stimulated by the advent of Next Generation Sequencing technologies, since those…
Grover’s Search with Faults on Some Marked Elements
2016
Grover's algorithm is a quantum query algorithm solving the unstructured search problem of size N using $$O\sqrt{N}$$ queries. It provides a significant speed-up over any classical algorithm [2]. The running time of the algorithm, however, is very sensitive to errors in queries. Multiple authors have analysed the algorithm using different models of query errors and showed the loss of quantum speed-up [1, 4]. We study the behavior of Grover's algorithm in the model where the search space contains both faulty and non-faulty marked elements. We show that in this setting it is indeed possible to find one of marked elements in $$O\sqrt{N}$$ queries.