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Seyed J. Haddadi - IEEE Xplore Author Profile

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Novel NLP techniques have advanced the analysis of user-generated content on digital platforms. This study combines sentiment analysis and topic modeling to analyze customer reviews. Our investigation explores BERT and T5 models for sentiment analysis and BERTopic for topic modelingevaluated in three distinct datasets Amazon, Netflix, and Spotify. Results show that integrating topic modeling enhan...Show More
in the financial system such as the banking sector, customers are valuable, and losing them is very expensive as customer churn is a major challenge facing banks. In this paper, we present a time series Deep Neural Networks (DNNs)-based approach for customer retention, in which a dataset has been collected from retail banking customers in the Republic Islamic of Iran. The dataset consists of real ...Show More
Simultaneous Localization and Mapping (SLAM) is being developed as a hot topic issue in computer vision which nowadays, is the main core of self-localization and autonomous navigation in robotic technology and unmanned vehicles. In this way, Visual-Inertial SLAM algorithm is a popular strategy to attain high accurate 6-DOF state estimation. But such an accurate system is vulnerable to extreme move...Show More
This brief addresses the accuracy of the pose estimation of a Low-Cost Quadrotor using visual SLAM and sensor data fusion for making an autonomous indoor navigation in a known GPS-denied environment. To perform this approach, two kinds of modules are employed. For the former, a Simultaneous Localization and Mapping (SLAM) system is used. This SLAM system uses Oriented Fast and rotated BRIEF (ORB) ...Show More
this paper addresses the development of high order Sliding Mode Control (SMC) of a Quadrotor. This development has been done using Back-Stepping Sliding Mode Control (BSMC). By considering external disturbances and dynamic uncertainties in parameters, this approach guaranties the convergence of system states to their desired values. Based on Lyapunov stability theory, main achievement of this inve...Show More
In this paper, the attitude stabilization problem of an Octorotor with coaxial motors is studied. To this end, the new method of intelligent adaptive control is presented. The designed controller which includes fuzzy and PID controllers, is completed by resistant adaptive function of approximate external disturbance and changing in the dynamic model. In fact, the regulation factor of PID controlle...Show More
In this paper, the full procedure of the mechanical design and electronic subsystems of a new Octorotor flying robot is discussed. The number of motors from four motors is increased to eight motors which all of motors set as coaxial and they are installed two by two. It means that four motors are placed on top of the robot and another four motors are placed on down of the robot coaxially. This str...Show More
This paper introduces a Miniature Aerial Vehicle (MAV) which is Autonomous in outdoor environment. Main contributions of this research are both new trajectory tracking and attitude control scheme in real flight mode. This MAV is based on a traditional quadrotor. For stabilization of the quadrotor's attitude a PID controller is utilized. The proposed controller is designed such that to be able to a...Show More
In this paper, an attitude controller is implemented and studied on an Octorotor flying robot. In this Unmanned Aerial Vehicle (UAV), motors number is extended to eight motors. Also, mechanical and electrical subsystems is designed and performed based on the considered Quadrotor. To this end, the robot stability is obtained using the stated controller. Then, this flying robot is tested under the f...Show More
In this paper, the design and implementation procedure of an attitude controller on an autonomous Octorotor flying robot is studied. In an autonomous Octorotor flying robot, motors number is increased to eight motors which all of motors set as coaxial and they are installed two by two. In fact, two motors are installed on the four-rotorcraft axis and so, they propel coaxially. Also, the design pro...Show More