Methods for Automatic Evaluation of Sentence Extract Summaries

This paper describes three novel techniques to automatically evaluate sentence extract summaries. Two of these techniques called FuSE and DeFuSE evaluate the quality of the generated extract summary based on the degree of similarity to the model summary. They use a fuzzy set theoretic basis to generate a match score. DeFuSE is an enhancement to FuSE and uses WordNet based hypernymy structures to detect similarity between sentences at abstracted levels. The third technique focuses on quantifying the quality of an extract summary based on the difficulty in generating such a summary. Advantages of these techniques are described with examples.

Efficient Key Management and Distribution for MANET

Ad hoc networks are being used in applications ranging from disaster recovery to distributed collaborative entertainment applications. Ad hoc networks have become one of the most attractive solution for rapid deployment of interconnecting large number of mobile personal devices. The user community of mobile personal devices are demanding a variety of value added multimedia entertainment services. The popularity of peer group is increasing and one or some members of the peer group need to send data to some or all members of the peer group. The increasing demand for group oriented value added services is driving for efficient multicast service over ad hoc networks. Access control mechanisms need to be deployed to provide guarantee that the unauthorized users cannot access the multicast content. In this paper, we present a topology aware key management and distribution scheme for secure overlay multicast over MANET to address node mobility related issues for multicast key management. We use overlay approach for key distribution and our objective is to keep communication overhead low for key management and distribution. We also incorporate reliability using explicit acknowledgments with the key distribution scheme. Through simulations we show that the proposed key management scheme has low communication overhead for rekeying and improves the reliability of key distribution.

Modeling of growth and motion of equiaxed dendrites in a convecting melt

A numerical micro-scale model is developed to study the behavior of dendrite growth in presence of melt convection. In this method, an explicit, coupled enthalpy model is used to simulate the growth of an equiaxed dendrite, while a Volume of Fluid (VOF) method is used to track the movement of the dendrite in the convecting melt in a two-dimensional Eulerian framework. Numerical results demonstrate the effectiveness of the enthalpy model in simulating the dendritic growth involving complex shape, and the accuracy of VOF method in conserving mass and preserving the complex dendritic shape during motion. Simulations are performed in presence of uniform melt flow for both fixed and moving dendrites, and the difference in dendrite morphology is shown.

Translation Induction on Indian Language Corpora Using Translingual Themes from Other Languages

Identifying translations from comparable corpora is a well-known problem with several applications, e.g. dictionary creation in resource-scarce languages. Scarcity of high quality corpora, especially in Indian languages, makes this problem hard, e.g. state-of-the-art techniques achieve a mean reciprocal rank (MRR) of 0.66 for English-Italian, and a mere 0.187 for Telugu-Kannada. There exist comparable corpora in many Indian languages with other ``auxiliary'' languages. We observe that translations have many topically related words in common in the auxiliary language. To model this, we define the notion of a translingual theme, a set of topically related words from auxiliary language corpora, and present a probabilistic framework for translation induction. Extensive experiments on 35 comparable corpora using English and French as auxiliary languages show that this approach can yield dramatic improvements in performance (e.g. MRR improves by 124% to 0.419 for Telugu-Kannada). A user study on WikiTSu, a system for cross-lingual Wikipedia title suggestion that uses our approach, shows a 20% improvement in the quality of titles suggested.

Una mirada a Egipto desde la Biblia Hebraica

Resumen: ¿Qué imágenes de Egipto encontramos en la Biblia Hebrea, además del éxodo? Los textos bíblicos miran a su vecina Egipto como país de refugio (del hambre o la persecución). Pero por ser grande y fuerte, Egipto es también proveedor de armamento militar. Puede tornarse una falsa seguridad para un pueblo que debe confiar solo en Yavé. La literatura sapiencial es más benévola. En la descripción de la cama lujosa a la que una mujer descarada atrae a su amante, Proverbios 7 ofrece un homenaje indirecto a la riqueza egipcia.

Lo patronal, lo estatal y lo parental en la autobiografía de Ankhtifi de Mo'alla

Resumen: Entre las principales contribuciones académicas de Alicia Daneri, sobresale un estudio monográfico sobre el Primer Período Intermedio (Las Dinastías VII-VIII y el período heracleopolitano en Egipto, 1992). Allí, la Autobiografía de Ankhtifi de Mo‘alla es considerada en el marco de un análisis de la crisis política y socioeconómica que la historiografía ha señalado como el rasgo distintivo de la época. Posteriormente, Jan Assmann (The mind of Egypt, 2002 [1996]) ha abordado esa misma autobiografía, para destacar la emergencia de un nuevo tipo de actor social durante tal período, interpretado en clave de patronazgo. Ciertamente, aquella escena política en crisis facilita la percepción de una lógica social ligada a las prácticas patronales. Sin embargo, tal cosa no implica que otras grandes lógicas de organización social como aquellas que corresponden al ámbito estatal y al del parentesco no continúen gravitando con fuerza. El propósito de este artículo es el de reconsiderar la Autobiografía de Ankhtifi en un intento por vislumbrar el alcance específico de lo patronal, lo estatal y lo parental en el texto, lo que a su vez permite una reflexión más amplia sobre las características de la organización social y política en el valle del Nilo durante el Primer Período Intermedio.