Abstract. Especially, during last few years, a wide range of information in Indian regional languages like Hindi, Urdu, Bengali, Tamil and Telugu has been made available on web in the form of e-data. But the access to these data repositories is very low because the efficient search engines/retrieval systems supporting these languages are very limited. Hence automatic information processing and retrieval is become an urgent requirement. This paper presents an unsupervised approach for the development of an Urdu stemmer. To train the system a training dataset, taken from CRULP [22], consists of 111,887 words is used. For generating suffix rules two different approaches, namely, frequency based stripping and length based stripping have been proposed. The evaluation has been made on 1200 words extracted from the Emille corpus. The experiment results shows that these are very efficient algorithms having accuracy of 85.36% and 79.76%.
Security is an indispensable concern in Wireless Sensor Network (WSN) due to the presence of potential adversaries. For secure communication in infrastructure less sensor nodes various key pre distribution have been proposed. In this paper we have
evaluated various existing deterministic, probabilistic and hybrid type of key pre distribution and dynamic key generation algorithms for distributing pair-wise, group-wise and network-wise keys and we have propose a key pre distribution scheme using deterministic approach based on combinatorial design and traversal design which will improve the resiliency and achieve sufficient level of security in the network. This design can be used where large number of nodes are to be deployed in the WSN.
Wireless Mesh Network is an emerging technology that allow users to access information and services electronically using service discovery protocol. The seamless connectivity and mobility feature of WMN motivated us in the design of efficient and scalable service discovery scheme that assures certain level of quality of service. The proposed model uses routing clients which communicate with Service Caches to register for services. The gateway nodes discovers quality services by using backbone based distributed directory structure. The proposed model is scalable and reduces discovery overhead, duplicate information dissemination, and energy consumption.
Grid modernization is a transformation from a more centralized and monolithic electric grid to one that is modular and agile—changing from central generation and radial transmission to a combined centralized and distributed generation with intelligent load control. The grid's current configuration is not easily adaptable to infrastructure changes, such as the addition of distributed energy resources (DERs) or new loads, and has even exhibited some failures. To address this need for grid resiliency and accommodate the dynamic build of the new grid, grid modernization provides the capability for automation, reliability, and real‐time responsiveness sought by grid operators.
Security is an indispensable concern in Wireless Sensor Network (WSN) due to the presence of potential adversaries. For secure communication in infrastructureless sensor nodes various key predistribution have been proposed. In this paper we have evaluated various existing deterministic, probabilistic and hybrid type of key pre-distribution and dynamic key generation algorithms for distributing pair-wise, group-wise and network-wise keys and we have propose a key predistribution scheme using deterministic approach based on combinatorial design and traversal design which will improve the resiliency and achieve sufficient level of security in the network.This design can be used where large number of nodes are to be deployed in the WSN.
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