Search Results for author: Narges Ahmidi

Found 6 papers, 1 papers with code

Evaluation of Active Feature Acquisition Methods for Static Feature Settings

no code implementations6 Dec 2023 Henrik von Kleist, Alireza Zamanian, Ilya Shpitser, Narges Ahmidi

These estimators can be applied when the missingness in the retrospective dataset follows a missing-at-random (MAR) pattern.

Offline RL reinforcement-learning +1

Evaluation of Active Feature Acquisition Methods for Time-varying Feature Settings

no code implementations3 Dec 2023 Henrik von Kleist, Alireza Zamanian, Ilya Shpitser, Narges Ahmidi

We show that one can apply offline reinforcement learning under the NUC assumption and missing data methods under the NDE assumption.

reinforcement-learning

Path Dependent Structural Equation Models

no code implementations24 Aug 2020 Ranjani Srinivasan, Jaron Lee, Rohit Bhattacharya, Narges Ahmidi, Ilya Shpitser

Causal analyses of longitudinal data generally assume that the qualitative causal structure relating variables remains invariant over time.

Causal Inference

Recognizing Surgical Activities with Recurrent Neural Networks

3 code implementations20 Jun 2016 Robert DiPietro, Colin Lea, Anand Malpani, Narges Ahmidi, S. Swaroop Vedula, Gyusung I. Lee, Mija R. Lee, Gregory D. Hager

In contrast, we work on recognizing both gestures and longer, higher-level activites, or maneuvers, and we model the mapping from kinematics to gestures/maneuvers with recurrent neural networks.

Gesture Recognition

Automated Objective Surgical Skill Assessment in the Operating Room Using Unstructured Tool Motion

no code implementations18 Dec 2014 Piyush Poddar, Narges Ahmidi, S. Swaroop Vedula, Lisa Ishii, Gregory D. Hager, Masaru Ishii

Previous work on surgical skill assessment using intraoperative tool motion in the operating room (OR) has focused on highly-structured surgical tasks such as cholecystectomy.

Descriptive

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