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Ramakrishna Mission Vivekananda Educational and Research Institute

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Research library9linked papers
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Selected work

Representative Papers

A HamNoSys-Guided Dataset and Baselines for Fine-Grained Isolated Handshape Recognition in Sign Language

Aug 11, 2026

This study addresses the lack of large-scale, language-agnostic, fine-grained visual datasets for sign language recognition that support signer-aware evaluation. To bridge this gap, the authors construct a balanced dataset based on the Hamburg Notation System (HamNoSys 4), comprising 144,000 RGB images contributed by 15 signers across 160 handshape classes. They introduce, for the first time, a dual evaluation protocol incorporating both signer-dependent and leave-one-signer-out (LOSO) settings, and establish reproducible benchmarks using diverse models—including ResNet-18, ViT-B/16, graph convolutional networks, and XGBoost. Experiments on the ASL Fingerspelling Dataset A achieve Top-1 accuracy of 82.20%–87.40% under the LOSO protocol, while also revealing a significant performance drop in cross-signer generalization, highlighting a critical challenge in real-world deployment.

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A Word-Level Digital Reader of the Prasthanatrayi with Sankara's Bhasya: Corpus, Method, and an Open, Offline Reading Aid for the Advaita Vedanta Canon

Jul 08, 2026

This study addresses word-level readability barriers in the *Triple Canon* and Śaṅkara’s commentary—arising from sandhi, compound formation, and dense scholarly prose—by presenting the first offline, open-source, word-level interactive reading system covering the complete text. The system integrates a rule-based sandhi splitter, an inflectional lexicon, corpus-based lookup tables, and a large language model, enhanced by an adversarial two-pass validation protocol and a human-in-the-loop correction mechanism. It encompasses 13 commentary units, 36,881 root-text tokens, and 95,587 surface forms from the commentary, achieving over 99% agreement with authoritative dictionaries at high-confidence analysis levels. This substantially enhances the readability and searchability of Sanskrit philosophical texts.

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The Multipath Blind Spot: $K$-Agnostic Robust Calibration for Sparse-Anchor Metric Depth from Frozen Foundations

Jul 04, 2026

This work addresses the significant performance degradation of existing sparse anchor calibration methods under real-world sensor anomalies—particularly multipath interference—where anchors are present but corrupted by erroneous values. The authors propose MRAC, a training-free, inference-time calibration framework that, for the first time, exposes a structural blind spot in the widely used VI-Depth method under such conditions. MRAC introduces a robust, parameter- and K-value-agnostic mechanism that leverages the base model’s internal consistency to identify reliable anchors, followed by Theil–Sen estimation combined with Median Absolute Deviation (MAD) testing. The entire calibration process completes in approximately 50 microseconds on a CPU and supports arbitrary numbers of anchors. Evaluated on a 320-instance benchmark, MRAC achieves an 84% win rate and reduces AbsRel error by 3.2× (from 0.489 to 0.151) on KITTI multipath scenarios—all without requiring model retraining.

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Recent publications

Latest Papers

A HamNoSys-Guided Dataset and Baselines for Fine-Grained Isolated Handshape Recognition in Sign Language

Aug 11, 2026

This study addresses the lack of large-scale, language-agnostic, fine-grained visual datasets for sign language recognition that support signer-aware evaluation. To bridge this gap, the authors construct a balanced dataset based on the Hamburg Notation System (HamNoSys 4), comprising 144,000 RGB images contributed by 15 signers across 160 handshape classes. They introduce, for the first time, a dual evaluation protocol incorporating both signer-dependent and leave-one-signer-out (LOSO) settings, and establish reproducible benchmarks using diverse models—including ResNet-18, ViT-B/16, graph convolutional networks, and XGBoost. Experiments on the ASL Fingerspelling Dataset A achieve Top-1 accuracy of 82.20%–87.40% under the LOSO protocol, while also revealing a significant performance drop in cross-signer generalization, highlighting a critical challenge in real-world deployment.

0 citationsRead paper

A Word-Level Digital Reader of the Prasthanatrayi with Sankara's Bhasya: Corpus, Method, and an Open, Offline Reading Aid for the Advaita Vedanta Canon

Jul 08, 2026

This study addresses word-level readability barriers in the *Triple Canon* and Śaṅkara’s commentary—arising from sandhi, compound formation, and dense scholarly prose—by presenting the first offline, open-source, word-level interactive reading system covering the complete text. The system integrates a rule-based sandhi splitter, an inflectional lexicon, corpus-based lookup tables, and a large language model, enhanced by an adversarial two-pass validation protocol and a human-in-the-loop correction mechanism. It encompasses 13 commentary units, 36,881 root-text tokens, and 95,587 surface forms from the commentary, achieving over 99% agreement with authoritative dictionaries at high-confidence analysis levels. This substantially enhances the readability and searchability of Sanskrit philosophical texts.

0 citationsRead paper

The Multipath Blind Spot: $K$-Agnostic Robust Calibration for Sparse-Anchor Metric Depth from Frozen Foundations

Jul 04, 2026

This work addresses the significant performance degradation of existing sparse anchor calibration methods under real-world sensor anomalies—particularly multipath interference—where anchors are present but corrupted by erroneous values. The authors propose MRAC, a training-free, inference-time calibration framework that, for the first time, exposes a structural blind spot in the widely used VI-Depth method under such conditions. MRAC introduces a robust, parameter- and K-value-agnostic mechanism that leverages the base model’s internal consistency to identify reliable anchors, followed by Theil–Sen estimation combined with Median Absolute Deviation (MAD) testing. The entire calibration process completes in approximately 50 microseconds on a CPU and supports arbitrary numbers of anchors. Evaluated on a 320-instance benchmark, MRAC achieves an 84% win rate and reduces AbsRel error by 3.2× (from 0.489 to 0.151) on KITTI multipath scenarios—all without requiring model retraining.

0 citationsRead paper