Search Results for author: Jaydip Sen

Found 44 papers, 2 papers with code

Boosting Digital Safeguards: Blending Cryptography and Steganography

no code implementations9 Apr 2024 Anamitra Maiti, Subham Laha, Rishav Upadhaya, Soumyajit Biswas, Vikas Chaudhary, Biplab Kar, Nikhil Kumar, Jaydip Sen

In today's digital age, the internet is essential for communication and the sharing of information, creating a critical need for sophisticated data security measures to prevent unauthorized access and exploitation.

Semantic Stealth: Adversarial Text Attacks on NLP Using Several Methods

no code implementations8 Apr 2024 Roopkatha Dey, Aivy Debnath, Sayak Kumar Dutta, Kaustav Ghosh, Arijit Mitra, Arghya Roy Chowdhury, Jaydip Sen

In various real-world applications such as machine translation, sentiment analysis, and question answering, a pivotal role is played by NLP models, facilitating efficient communication and decision-making processes in domains ranging from healthcare to finance.

Adversarial Text Machine Translation +6

Generative AI-Based Text Generation Methods Using Pre-Trained GPT-2 Model

no code implementations2 Apr 2024 Rohit Pandey, Hetvi Waghela, Sneha Rakshit, Aparna Rangari, Anjali Singh, Rahul Kumar, Ratnadeep Ghosal, Jaydip Sen

This work delved into the realm of automatic text generation, exploring a variety of techniques ranging from traditional deterministic approaches to more modern stochastic methods.

Text Generation

Information Security and Privacy in the Digital World: Some Selected Topics

no code implementations30 Mar 2024 Jaydip Sen, Joceli Mayer, Subhasis Dasgupta, Subrata Nandi, Srinivasan Krishnaswamy, Pinaki Mitra, Mahendra Pratap Singh, Naga Prasanthi Kundeti, Chandra Sekhara Rao MVP, Sudha Sree Chekuri, Seshu Babu Pallapothu, Preethi Nanjundan, Jossy P. George, Abdelhadi El Allahi, Ilham Morino, Salma AIT Oussous, Siham Beloualid, Ahmed Tamtaoui, Abderrahim Bajit

In the era of generative artificial intelligence and the Internet of Things, while there is explosive growth in the volume of data and the associated need for processing, analysis, and storage, several new challenges are faced in identifying spurious and fake information and protecting the privacy of sensitive data.

A Modified Word Saliency-Based Adversarial Attack on Text Classification Models

no code implementations17 Mar 2024 Hetvi Waghela, Sneha Rakshit, Jaydip Sen

This paper introduces a novel adversarial attack method targeting text classification models, termed the Modified Word Saliency-based Adversarial At-tack (MWSAA).

Adversarial Attack Decision Making +5

Adversarial Attacks on Image Classification Models: Analysis and Defense

no code implementations28 Dec 2023 Jaydip Sen, Abhiraj Sen, Ananda Chatterjee

The notion of adversarial attacks on image classification models based on convolutional neural networks (CNN) is introduced in this work.

Adversarial Attack Classification +1

A Comparative Study of Portfolio Optimization Methods for the Indian Stock Market

no code implementations23 Oct 2023 Jaydip Sen, Arup Dasgupta, Partha Pratim Sengupta, Sayantani Roy Choudhury

The top stocks of each cluster are identified based on their free-float market capitalization from the report of the NSE published on July 1, 2022 (NSE Website).

Portfolio Optimization

A Portfolio Rebalancing Approach for the Indian Stock Market

no code implementations15 Oct 2023 Jaydip Sen, Arup Dasgupta, Subhasis Dasgupta, Sayantani Roychoudhury

The portfolios are designed based on the training data from January 4, 2021 to June 30, 2022.

Performance Evaluation of Equal-Weight Portfolio and Optimum Risk Portfolio on Indian Stocks

no code implementations24 Sep 2023 Abhiraj Sen, Jaydip Sen

Three portfolios are designed following the above approaches choosing the top ten stocks from each sector based on their free-float market capitalization.

Portfolio Optimization: A Comparative Study

no code implementations11 Jul 2023 Jaydip Sen, Subhasis Dasgupta

These three approaches to portfolio design are applied to the historical prices of stocks chosen from ten thematic sectors listed on the National Stock Exchange (NSE) of India.

Portfolio Optimization

Adversarial Attacks on Image Classification Models: FGSM and Patch Attacks and their Impact

no code implementations5 Jul 2023 Jaydip Sen, Subhasis Dasgupta

However, very powerful and pre-trained CNN models working very accurately on image datasets for image classification tasks may perform disastrously when the networks are under adversarial attacks.

Classification Image Classification

A Comparative Analysis of Portfolio Optimization Using Mean-Variance, Hierarchical Risk Parity, and Reinforcement Learning Approaches on the Indian Stock Market

no code implementations27 May 2023 Jaydip Sen, Aditya Jaiswal, Anshuman Pathak, Atish Kumar Majee, Kushagra Kumar, Manas Kumar Sarkar, Soubhik Maji

Three approaches of portfolio optimization that are considered in this work are the mean-variance portfolio (MVP), hierarchical risk parity (HRP) portfolio, and reinforcement learning-based portfolio.

Portfolio Optimization Q-Learning +1

Data Privacy Preservation on the Internet of Things

no code implementations1 Apr 2023 Jaydip Sen, Subhasis Dasgupta

Recent developments in hardware and information technology have enabled the emergence of billions of connected, intelligent devices around the world exchanging information with minimal human involvement.

A Framework of Customer Review Analysis Using the Aspect-Based Opinion Mining Approach

no code implementations20 Dec 2022 Subhasis Dasgupta, Jaydip Sen

Opinion mining is the branch of computation that deals with opinions, appraisals, attitudes, and emotions of people and their different aspects.

Aspect Extraction Opinion Mining +1

Designing Efficient Pair-Trading Strategies Using Cointegration for the Indian Stock Market

no code implementations14 Nov 2022 Jaydip Sen

This paper presents a cointegration-based approach that identifies stocks listed in the five sectors of the National Stock Exchange (NSE) of India for designing efficient pair-trading portfolios.

PAIR TRADING

Design and Analysis of Optimized Portfolios for Selected Sectors of the Indian Stock Market

no code implementations8 Oct 2022 Jaydip Sen, Abhishek Dutta

The evaluation of the portfolios is done based on their cumulative returns over the test period from Jan 1, 2021, to Dec 31, 2021.

Portfolio Optimization

Stock Volatility Prediction using Time Series and Deep Learning Approach

no code implementations5 Oct 2022 Ananda Chatterjee, Hrisav Bhowmick, Jaydip Sen

It has been observed the LSTM performed better in predicting volatility in pharma over banking and IT sectors.

Time Series Time Series Analysis

A Comparative Study of Hierarchical Risk Parity Portfolio and Eigen Portfolio on the NIFTY 50 Stocks

no code implementations3 Oct 2022 Jaydip Sen, Abhishek Dutta

The portfolios are built following the two approaches to historical stock prices from Jan 1, 2016, to Dec 31, 2020.

Portfolio Optimization

Stock Performance Evaluation for Portfolio Design from Different Sectors of the Indian Stock Market

no code implementations1 Jul 2022 Jaydip Sen, Arpit Awad, Aaditya Raj, Gourav Ray, Pusparna Chakraborty, Sanket Das, Subhasmita Mishra

We have built a minimum variance portfolio and optimal risk portfolio for all the six chosen sectors by using the daily stock prices over the past five years as training data and have also conducted back testing to check the performance of the portfolio.

Portfolio Optimization Stock Price Prediction +1

Robust Portfolio Design and Stock Price Prediction Using an Optimized LSTM Model

no code implementations2 Mar 2022 Jaydip Sen, Saikat Mondal, Gourab Nath

Six months after the construction of the portfolios, i. e., on Jul 1, 2021, the actual returns and the LSTM-predicted returns for the portfolios are computed.

Stock Price Prediction

Hierarchical Risk Parity and Minimum Variance Portfolio Design on NIFTY 50 Stocks

no code implementations6 Feb 2022 Jaydip Sen, Sidra Mehtab, Abhishek Dutta, Saikat Mondal

Portfolio design and optimization have been always an area of research that has attracted a lot of attention from researchers from the finance domain.

Portfolio Optimization on NIFTY Thematic Sector Stocks Using an LSTM Model

no code implementations6 Feb 2022 Jaydip Sen, Saikat Mondal, Sidra Mehtab

Optimum risk and eigen portfolios for each sector are designed based on ten critical stocks from the sector.

Portfolio Optimization

Precise Stock Price Prediction for Robust Portfolio Design from Selected Sectors of the Indian Stock Market

no code implementations14 Jan 2022 Jaydip Sen, Ashwin Kumar R S, Geetha Joseph, Kaushik Muthukrishnan, Koushik Tulasi, Praveen Varukolu

In this project, we have built an efficient portfolio and to predict the future asset value by means of individual stock price prediction of the stocks in the portfolio.

Portfolio Optimization Stock Price Prediction

Comprehensive Movie Recommendation System

no code implementations23 Dec 2021 Hrisav Bhowmick, Ananda Chatterjee, Jaydip Sen

A recommender system, also known as a recommendation system, is a type of information filtering system that attempts to forecast a user's rating or preference for an item.

Collaborative Filtering Movie Recommendation +2

Analysis of Sectoral Profitability of the Indian Stock Market Using an LSTM Regression Model

no code implementations9 Nov 2021 Jaydip Sen, Saikat Mondal, Sidra Mehtab

This paper presents an optimized predictive model built on long-and-short-term memory (LSTM) architecture for automatically extracting past stock prices from the web over a specified time interval and predicting their future prices for a specified forecast horizon, and forecasts the future stock prices.

regression

Stock Portfolio Optimization Using a Deep Learning LSTM Model

no code implementations8 Nov 2021 Jaydip Sen, Abhishek Dutta, Sidra Mehtab

The predicted and the actual returns of each portfolio are found to be high, indicating the high precision of the LSTM model.

Portfolio Optimization Time Series +1

Machine Learning in Finance-Emerging Trends and Challenges

no code implementations8 Oct 2021 Jaydip Sen, Rajdeep Sen, Abhishek Dutta

The paradigm of machine learning and artificial intelligence has pervaded our everyday life in such a way that it is no longer an area for esoteric academics and scientists putting their effort to solve a challenging research problem.

BIG-bench Machine Learning

Optimum Risk Portfolio and Eigen Portfolio: A Comparative Analysis Using Selected Stocks from the Indian Stock Market

no code implementations23 Jul 2021 Jaydip Sen, Sidra Mehtab

Three portfolios are built for each of the seven sectors chosen for this study, and the portfolios are analyzed on the training data based on several metrics such as annualized return and risk, weights assigned to the constituent stocks, the correlation heatmaps, and the principal components of the Eigen portfolios.

Design and Analysis of Robust Deep Learning Models for Stock Price Prediction

no code implementations17 Jun 2021 Jaydip Sen, Sidra Mehtab

Building predictive models for robust and accurate prediction of stock prices and stock price movement is a challenging research problem to solve.

Stock Price Prediction

Volatility Modeling of Stocks from Selected Sectors of the Indian Economy Using GARCH

no code implementations28 May 2021 Jaydip Sen, Sidra Mehtab, Abhishek Dutta

Volatility clustering is an important characteristic that has a significant effect on the behavior of stock markets.

Clustering

An Algorithm for Recommending Groceries Based on an Item Ranking Method

no code implementations3 May 2021 Gourab Nath, Jaydip Sen

The algorithm is based on the perspective that, since the grocery items are usually bought in bulk, a grocery recommender system should be capable of recommending the items in bulk.

Recommendation Systems

Profitability Analysis in Stock Investment Using an LSTM-Based Deep Learning Model

no code implementations6 Apr 2021 Jaydip Sen, Abhishek Dutta, Sidra Mehtab

Even more challenging is to build a system for constructing an optimum portfolio of stocks based on the forecasted future stock prices.

Accurate Stock Price Forecasting Using Robust and Optimized Deep Learning Models

no code implementations28 Mar 2021 Jaydip Sen, Sidra Mehtab

Designing robust frameworks for precise prediction of future prices of stocks has always been considered a very challenging research problem.

Stock Price Prediction Using CNN and LSTM-Based Deep Learning Models

no code implementations22 Oct 2020 Sidra Mehtab, Jaydip Sen

In this approach, the open values of the NIFTY 50 index are predicted on a time horizon of one week, and once a week is over, the actual index values are included in the training set before the model is trained again, and the forecasts for the next week are made.

Stock Price Prediction

Stock Price Prediction Using Machine Learning and LSTM-Based Deep Learning Models

4 code implementations20 Sep 2020 Sidra Mehtab, Jaydip Sen, Abhishek Dutta

In this work, we propose an approach of hybrid modeling for stock price prediction building different machine learning and deep learning-based models.

BIG-bench Machine Learning regression +2

Machine Learning Applications in Misuse and Anomaly Detection

no code implementations10 Sep 2020 Jaydip Sen, Sidra Mehtab

Machine learning and data mining algorithms play important roles in designing intrusion detection systems.

Anomaly Detection BIG-bench Machine Learning +1

A Time Series Analysis-Based Stock Price Prediction Using Machine Learning and Deep Learning Models

no code implementations17 Apr 2020 Sidra Mehtab, Jaydip Sen

We contend that the agglomerative approach of model building that uses a combination of statistical, machine learning, and deep learning approaches, can very effectively learn from the volatile and random movement patterns in a stock price data.

BIG-bench Machine Learning regression +3

Stock Price Prediction Using Convolutional Neural Networks on a Multivariate Timeseries

no code implementations10 Jan 2020 Sidra Mehtab, Jaydip Sen

Based on the NIFTY data during the said period, we build various predictive models using machine learning approaches, and then use those models to predict the Close value of NIFTY 50 for the year 2019, with a forecast horizon of one week.

BIG-bench Machine Learning regression +1

A Robust Predictive Model for Stock Price Prediction Using Deep Learning and Natural Language Processing

1 code implementation9 Dec 2019 Sidra Mehtab, Jaydip Sen

Based on the data of 2015 to 2017, we build various predictive models using machine learning, and then use those models to predict the closing value of NIFTY 50 for the period January 2018 till June 2019 with a prediction horizon of one week.

BIG-bench Machine Learning Sentiment Analysis +1

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