Showing papers by "International Institute of Information Technology, Hyderabad published in 2002"
TL;DR: This paper develops a comprehensive analytical cost model for processing of queries on vertically partitioned OODB classes and studies the trade-off between the projection ratio versus selectivity factor vis-a-vis sequential versus index access.
Abstract: Vertical partitioning is a design technique for reducing the number of disk accesses to execute a given set of queries by minimizing the number of irrelevant instance variables accessed. This is accomplished by grouping the frequently accessed instance variables as vertical class fragments. The complexity of object-oriented database models due to subclass hierarchy and class composition hierarchy complicates the definition and representation of vertical partitioning of the classes, which makes the problem of vertical partitioning in OODBs very challenging. In this paper, we develop a comprehensive analytical cost model for processing of queries on vertically partitioned OODB classes. A set of analytical evaluation results is presented to show the effect of vertical partitioning, and to study the trade-off between the projection ratio versus selectivity factor vis-a-vis sequential versus index access. Furthermore, an empirical experimental prototype supporting vertical class partitioning has been implemented on a commercial OODB tool kit to validate our analytical cost model.
19 citations
31 Aug 2002
TL;DR: A dependency based tagging scheme for creating tree banks for Indian languages based on Paninian grammatical model is described, which is comprehensive, easy to use with linear notation and economical in typing effort.
Abstract: This paper describes a dependency based tagging scheme for creating tree banks for Indian languages. The scheme has been so designed that it is comprehensive, easy to use with linear notation and economical in typing effort. It is based on Paninian grammatical model.
9 citations
07 Aug 2002
TL;DR: In this paper, a smart room is designed to prevent the occupant to move out of his room as well as monitor his movement after he's gone to bed, all this needs to be done by a smart responsive system which would be embedded in the patients room.
Abstract: Somnambulism is a sleep disorder characterized by walking or other activity while seemingly still asleep The sleep walking activity may include simply sitting up and appearing awake while actually asleep, getting up and walking around, or complex activities such as moving furniture, going to the bathroom, dressing and undressing, and similar activities Someone might even drive a car while actually asleep For the simplicity and convenience of the project we have restricted our occupants environment to a single room, which we call a "smart room" We consider that the user is an adult who is suffering from somnambulism Our intention is to prevent the occupant to move out of his room as well as monitor his movement after he's gone to bed, if the patient seems to move out then immediately inform the caretaker about it as well as try and wake up the patient from the sleep in a modest way so that it doesn't come up as a shock to him, all this needs to be done by a smart responsive system which would be embedded in the patients room This system is designed to work on the principles of assistive technology (technology used to assist caretakers)
3 citations