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Papers by Ranjana Chakrasali
International journal of engineering research and technology, 2019
In today’s world, the usage of digitalized text documents has drastically increased. The reason b... more In today’s world, the usage of digitalized text documents has drastically increased. The reason behind this is the growing need for portability of text related files and the greater need to eliminate the dependence on paper. Previously, the task of document classification was handled by very experienced experts who are capable of classifying large text documents into their corresponding category. Overtime, it was realized that this task extremely time consuming. Therefore the need for automatic text document classification came into the big picture. Corresponding research has shown the involvement of various classification algorithms to create an automated text document classification system. The major tasks involved in creating this type of automated system is handling large amount of texts, selecting the features from a wide range of availability and eventually selecting the classification algorithm which is best suited for classification text files. Initially the predefined class...
Social Events are responsible for the major percentage of web search traffic as shown by recent s... more Social Events are responsible for the major percentage of web search traffic as shown by recent studies. This paper is a survey conducted for identifying the various event detection methods which are useful for event mining. While traditional Web sites can only show human-edited events, this Paper suggests a System which automatically detects events from search log data and generate a storyboard where the events are arranged along a timeline. Web search log is considered as a good data resource for event mining, since they reflect people’s interests directly and wide variety of real world events are covered in it. In order to discover events from log data, an approach known as Smooth Nonnegative Matrix Factorization framework (SNMF) is used. Moreover, time factor is considered as an important element for event detection as different events develop at different time. In addition, to provide a visually appealing storyboard, each event is mapped with a set of relevant images arranged a...
International Digital Library, 2017
International Journal of Advance Research, Ideas and Innovations in Technology, 2019
The LZW data compression algorithm is a dictionary-based compression algorithm in which the proce... more The LZW data compression algorithm is a dictionary-based compression algorithm in which the process of searching for a pattern and its corresponding code to compress the data is a time-consuming process. As the file size to be compressed becomes larger the size of the dictionary also increases which increase the time to search a pattern in the dictionary. This paper proposes a novel approach to increase the efficiency of the algorithm with GPU using CUDA. Thus, making the process of searching the dictionary parallel. The result of the proposed system outlines the improved performance of the LZW algorithm
International Journal for Research in Applied Science and Engineering Technology, 2019
In today's world Surveillance system is playing an important role in the field of security. Movin... more In today's world Surveillance system is playing an important role in the field of security. Moving object detection has been widely used in video surveillance system. As well as motion estimation is an important part of surveillance video processing such as video filtering and compression from video frames. Video Surveillance System is a powerful tool used for monitoring people and their activities for public security. The motive of having surveillance system is not only to put cameras in place of human eyes, but also making it capable for recognizing activities automatically.
Computer Science & Information Technology (CS & IT), 2012
Given a simple connected undirected graph ܩ = ሺܸ, ܧሻ with |ܸ| = ݊ and |ܧ| = ݉, the Wiener i... more Given a simple connected undirected graph ܩ = ሺܸ, ܧሻ with |ܸ| = ݊ and |ܧ| = ݉, the Wiener index ܹሺܩሻ of ܩ is defined as half the sum of the distances of the form ݀ሺ,ݑ ݒሻ between all pairs of vertices u, v of ܩ. If ሺ,ܩ ݓ ா ሻ is an edge-weighted graph, then the Wiener index ܹሺ,ܩ ݓ ா ሻ of ሺ,ܩ ݓ ா ሻ is defined as the usual Wiener index but the distances is now computed in ሺ,ܩ ݓ ா ሻ. The paper proposes a new algorithm for computing the Wiener index of a Fibonacci weighted trees with Fibonacci branching in place of the available naive algorithm for the same. It is found that the time complexity of the algorithm is logarithmic.
Lecture Notes in Electrical Engineering, 2020
International journal of engineering research and technology, 2019
In today’s world, the usage of digitalized text documents has drastically increased. The reason b... more In today’s world, the usage of digitalized text documents has drastically increased. The reason behind this is the growing need for portability of text related files and the greater need to eliminate the dependence on paper. Previously, the task of document classification was handled by very experienced experts who are capable of classifying large text documents into their corresponding category. Overtime, it was realized that this task extremely time consuming. Therefore the need for automatic text document classification came into the big picture. Corresponding research has shown the involvement of various classification algorithms to create an automated text document classification system. The major tasks involved in creating this type of automated system is handling large amount of texts, selecting the features from a wide range of availability and eventually selecting the classification algorithm which is best suited for classification text files. Initially the predefined class...
Social Events are responsible for the major percentage of web search traffic as shown by recent s... more Social Events are responsible for the major percentage of web search traffic as shown by recent studies. This paper is a survey conducted for identifying the various event detection methods which are useful for event mining. While traditional Web sites can only show human-edited events, this Paper suggests a System which automatically detects events from search log data and generate a storyboard where the events are arranged along a timeline. Web search log is considered as a good data resource for event mining, since they reflect people’s interests directly and wide variety of real world events are covered in it. In order to discover events from log data, an approach known as Smooth Nonnegative Matrix Factorization framework (SNMF) is used. Moreover, time factor is considered as an important element for event detection as different events develop at different time. In addition, to provide a visually appealing storyboard, each event is mapped with a set of relevant images arranged a...
International Digital Library, 2017
International Journal of Advance Research, Ideas and Innovations in Technology, 2019
The LZW data compression algorithm is a dictionary-based compression algorithm in which the proce... more The LZW data compression algorithm is a dictionary-based compression algorithm in which the process of searching for a pattern and its corresponding code to compress the data is a time-consuming process. As the file size to be compressed becomes larger the size of the dictionary also increases which increase the time to search a pattern in the dictionary. This paper proposes a novel approach to increase the efficiency of the algorithm with GPU using CUDA. Thus, making the process of searching the dictionary parallel. The result of the proposed system outlines the improved performance of the LZW algorithm
International Journal for Research in Applied Science and Engineering Technology, 2019
In today's world Surveillance system is playing an important role in the field of security. Movin... more In today's world Surveillance system is playing an important role in the field of security. Moving object detection has been widely used in video surveillance system. As well as motion estimation is an important part of surveillance video processing such as video filtering and compression from video frames. Video Surveillance System is a powerful tool used for monitoring people and their activities for public security. The motive of having surveillance system is not only to put cameras in place of human eyes, but also making it capable for recognizing activities automatically.
Computer Science & Information Technology (CS & IT), 2012
Given a simple connected undirected graph ܩ = ሺܸ, ܧሻ with |ܸ| = ݊ and |ܧ| = ݉, the Wiener i... more Given a simple connected undirected graph ܩ = ሺܸ, ܧሻ with |ܸ| = ݊ and |ܧ| = ݉, the Wiener index ܹሺܩሻ of ܩ is defined as half the sum of the distances of the form ݀ሺ,ݑ ݒሻ between all pairs of vertices u, v of ܩ. If ሺ,ܩ ݓ ா ሻ is an edge-weighted graph, then the Wiener index ܹሺ,ܩ ݓ ா ሻ of ሺ,ܩ ݓ ா ሻ is defined as the usual Wiener index but the distances is now computed in ሺ,ܩ ݓ ா ሻ. The paper proposes a new algorithm for computing the Wiener index of a Fibonacci weighted trees with Fibonacci branching in place of the available naive algorithm for the same. It is found that the time complexity of the algorithm is logarithmic.
Lecture Notes in Electrical Engineering, 2020