Gaurav Yengera
Luxembourg, Luxembourg, Luxembourg
961 abonnés
+ de 500 relations
À propos
From a young age I have enjoyed and have been good at solving mathematical puzzles…
Expérience
Formation
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Universität des Saarlandes
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Courses:
Algorithms and Data Structures
Machine Learning
Optimization
Stochastic Processes 2
Database Systems -
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Activités et associations :Tennis Team, Debate Team.
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Publications
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Curriculum Design for Teaching via Demonstrations: Theory and Applications
NeurIPS 2021
We consider the problem of teaching via demonstrations in sequential decision-making settings. In particular, we study how to design a personalized curriculum over demonstrations to speed up the learner's convergence. We provide a unified curriculum strategy for two popular learner models: Maximum Causal Entropy Inverse Reinforcement Learning (MaxEnt-IRL) and Cross-Entropy Behavioral Cloning (CrossEnt-BC). Our unified strategy induces a ranking over demonstrations based on a notion of…
We consider the problem of teaching via demonstrations in sequential decision-making settings. In particular, we study how to design a personalized curriculum over demonstrations to speed up the learner's convergence. We provide a unified curriculum strategy for two popular learner models: Maximum Causal Entropy Inverse Reinforcement Learning (MaxEnt-IRL) and Cross-Entropy Behavioral Cloning (CrossEnt-BC). Our unified strategy induces a ranking over demonstrations based on a notion of difficulty scores computed w.r.t. the teacher's optimal policy and the learner's current policy. Compared to the state of the art, our strategy doesn't require access to the learner's internal dynamics and still enjoys similar convergence guarantees under mild technical conditions. Furthermore, we adapt our curriculum strategy to the setting where no teacher agent is present using task-specific difficulty scores. Experiments on a synthetic car driving environment and navigation-based environments demonstrate the effectiveness of our curriculum strategy.
Autres auteursVoir la publication -
Future-State Predicting LSTM for Early Surgery Type Recognition
IEEE Transactions on Medical Imaging
This work presents a novel approach, based on future prediction, for the early recognition of the type of a laparoscopic surgery from its video.
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RSDNet: Learning to Predict Remaining Surgery Duration from Laparoscopic Videos Without Manual Annotations
IEEE Transactions on Medical Imaging
Designed a deep learning model for prediction of remaining surgery duration from laparoscopic videos. The presented model does not require any manually annotated data during training. An extensive evaluation of model performance and characteristics was performed.
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Less is More: Surgical Phase Recognition with Less Annotations through Self-Supervised Pre-training of CNN-LSTM Networks
ArXiv
Novel method of pre-training CNN-LSTM networks, in an end-to-end manner on complete surgical videos, without relying on manual annotations. Developed approach boosts surgical phase recognition performance and outperforms previous state-of-the-art methods. Beneficial for widespread application of surgical phase recognition algorithms.
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Computation of Extended Robust Kalman Filter for Real-time Attitude and Position Estimation
Brazilian Symposium on Intelligent Automation (SBAI)
Presented a computationally efficient method for the computation of a robust Kalman filter algorithm. Designed a position and attitude reference system for a ground transport vehicle utilizing the proposed filtering algorithm and verified the correctness of the proposed computation method.
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SHREC'15 Track: Driver's Motion Depth Database
Digital Worlds Institute Technical Report
This paper presents the results of the SHREC 2015 Driver's Motion Depth Database Track. The aims of this track were twofold: a) to introduce a new open-access dataset of depth/range image sequences of drivers performing specific maneuvers and b) evaluate how well machine learning algorithms can detect and segment the regions of the left and right arms in each depth frame of the database. Four groups have participated in this track and collectively proposed and tested several variations of a…
This paper presents the results of the SHREC 2015 Driver's Motion Depth Database Track. The aims of this track were twofold: a) to introduce a new open-access dataset of depth/range image sequences of drivers performing specific maneuvers and b) evaluate how well machine learning algorithms can detect and segment the regions of the left and right arms in each depth frame of the database. Four groups have participated in this track and collectively proposed and tested several variations of a supervised learning algorithm based on neural networks. Different 2D and 3D features were employed as well as a post-processing method for detecting the position and orientation of the field of view within the vehicle's cabin. All methods were evaluated using quantitative measures based on a manually defined ground truth test set.
Autres auteurs -
Prix et distinctions
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Gold Medal Recepient
IIT (BHU) Varanasi
Award presented to the student graduating at the top of their class.
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Winning Algorithm for the DMMDB International Competition on 3D Object Recognition
SHREC '15
Developed a neural network for predicting driver's arms in 3D images. Presented the winning algorithm among contestants from various countries including the United States, India, and South Korea.
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IAS Summer Research Fellowship
Indian Academy of Sciences
Recipient of fellowship for conducting research at the Indian Institute of Science.