5,626 research outputs found
Deep Investigation of Cross-Language Plagiarism Detection Methods
This paper is a deep investigation of cross-language plagiarism detection
methods on a new recently introduced open dataset, which contains parallel and
comparable collections of documents with multiple characteristics (different
genres, languages and sizes of texts). We investigate cross-language plagiarism
detection methods for 6 language pairs on 2 granularities of text units in
order to draw robust conclusions on the best methods while deeply analyzing
correlations across document styles and languages.Comment: Accepted to BUCC (10th Workshop on Building and Using Comparable
Corpora) colocated with ACL 201
CompiLIG at SemEval-2017 Task 1: Cross-Language Plagiarism Detection Methods for Semantic Textual Similarity
We present our submitted systems for Semantic Textual Similarity (STS) Track
4 at SemEval-2017. Given a pair of Spanish-English sentences, each system must
estimate their semantic similarity by a score between 0 and 5. In our
submission, we use syntax-based, dictionary-based, context-based, and MT-based
methods. We also combine these methods in unsupervised and supervised way. Our
best run ranked 1st on track 4a with a correlation of 83.02% with human
annotations
Investigations on the performances of the electrical generator of a rim-driven marine current turbine”
In this paper, the electrical generator of a rim-driven horizontal-axis current turbine is modeled in detail. Its main characteristics and performances are evaluated (efficiency, mass, cost, etc). This generator is of permanent magnet direct-driven synchronous type and is connected to a variable speed power electronics drive. It is then compared to a more traditional technology (a pod generator) in terms of mass and cost for a common set of specification. In addition, due to the specific geometry of the machine, the use of low-cost ferrite magnets is investigated in place of NdFeB magnets
Community-based management of cultivated biodiversity - A French initiative on forage crops to design agro-ecological systems
The over-simplification of modern intensive agro-ecosystems in terms of cultivated biodiversity had dramatically increased their vulnerability to stresses and perturbations. In order to create and use a higher specific and genetic diversity several community management seed systems (or “Seed Houses”) are being currently set up in France. In this country where most farmers are used to buying commercial seeds, these initiatives are considered innovative. They also raise several issues such as: how to obtain, improve and conserve adapted plant genetic resources? How farmers’ communities can organise themselves to produce and exchange seeds amongst their members? Which procedures, which quality thresholds, which skills and which tools must be developed? With the aim to finding solutions the participatory research project entitled “ProABiodiv” involving farmers, extension services and researchers in genetics, sociology and economy was set up in 2011 on forage crops. It is a good illustration of how we can bridge the gap between scientific knowledge and the know-how of practitioners. Solutions must be locally developed as they are connected to a specific background, producing outputs that guide practitioners in raising the relevant questions rather than providing recipes
Dynamic deployment of context-aware access control policies for constrained security devices
Securing the access to a server, guaranteeing a certain level of protection over an encrypted communication channel, executing particular counter measures when attacks are detected are examples of security requirements. Such requirements are identi ed based on organizational purposes and expectations in terms of resource access and availability and also on system vulnerabilities and threats. All these requirements belong to the so-called security policy. Deploying the policy means enforcing, i.e., con guring, those security components and mechanisms so that the system behavior be nally the one speci ed by the policy. The deployment issue becomes more di cult as the growing organizational requirements and expectations generally leave behind the integration of new security functionalities in the information system: the information system will not always embed the necessary security functionalities for the proper deployment of contextual security requirements. To overcome this issue, our solution is based on a central entity approach which takes in charge unmanaged contextual requirements and dynamically redeploys the policy when context changes are detected by this central entity. We also present an improvement over the OrBAC (Organization-Based Access Control) model. Up to now, a controller based on a contextual OrBAC policy is passive, in the sense that it assumes policy evaluation triggered by access requests. Therefore, it does not allow reasoning about policy state evolution when actions occur. The modi cations introduced by our work overcome this limitation and provide a proactive version of the model by integrating concepts from action speci cation languages
A coupled electromagnetic / hydrodynamic model for the design of an integrated rim - driven naval propulsion system
This paper presents an analytical multi-physic modeling tool for the design optimization of a new kind of naval propulsion system. This innovative technology consists in an electrical permanent magnet motor that is integrated into a duct and surrounds a propeller. Compared with more conventional systems such as pods, the electrical machine and the propeller have the same diameter. Thus, their geometries, in addition to speed and torque, are closely related and a multidisciplinary design approach is relevant. Two disciplines are considered in this analytical model: electromagnetism and hydrodynamics. An example of systematic design for a typical application (a rim-driven thruster for a patrol boat) is then presented for a set of different design objectives (efficiency, mass, etc). The effects of each model are commente
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