Search Results for author: Lambert Schomaker

Found 32 papers, 7 papers with code

Self-Supervised Versus Supervised Training for Segmentation of Organoid Images

no code implementations19 Nov 2023 Asmaa Haja, Eric Brouwer, Lambert Schomaker

When trained on only 114 images for the main task, the self-supervised learning approach outperforms the supervised method achieving an F1-score of 0. 85, with higher stability, in contrast to an F1=0. 78 scored by the supervised method.

Image Segmentation Self-Supervised Learning +2

MultiSChuBERT: Effective Multimodal Fusion for Scholarly Document Quality Prediction

no code implementations15 Aug 2023 Gideon Maillette de Buy Wenniger, Thomas van Dongen, Lambert Schomaker

Using BERT$_{\textrm{BASE}}$ embeddings, on the (log) number of citations prediction task with the ACL-BiblioMetry dataset, our MultiSChuBERT (text+visual) model obtains an $R^{2}$ score of 0. 454 compared to 0. 432 for the SChuBERT (text only) model.

Chunking

Writer adaptation for offline text recognition: An exploration of neural network-based methods

1 code implementation11 Jul 2023 Tobias van der Werff, Maruf A. Dhali, Lambert Schomaker

In this paper, we explore how HTR models can be made writer adaptive by using only a handful of examples from a new writer (e. g., 16 examples) for adaptation.

Automatic Speech Recognition Handwriting Recognition +6

Reinforcement Learning in Robotic Motion Planning by Combined Experience-based Planning and Self-Imitation Learning

no code implementations11 Jun 2023 Sha Luo, Lambert Schomaker

High-quality and representative data is essential for both Imitation Learning (IL)- and Reinforcement Learning (RL)-based motion planning tasks.

Imitation Learning Motion Planning +1

Fusion-S2iGan: An Efficient and Effective Single-Stage Framework for Speech-to-Image Generation

no code implementations17 May 2023 Zhenxing Zhang, Lambert Schomaker

The goal of a speech-to-image transform is to produce a photo-realistic picture directly from a speech signal.

Image Generation

The Effects of Character-Level Data Augmentation on Style-Based Dating of Historical Manuscripts

1 code implementation15 Dec 2022 Lisa Koopmans, Maruf A. Dhali, Lambert Schomaker

Identifying the production dates of historical manuscripts is one of the main goals for paleographers when studying ancient documents.

Data Augmentation

Optimized latent-code selection for explainable conditional text-to-image GANs

no code implementations27 Apr 2022 Zhenxing Zhang, Lambert Schomaker

In this paper, we present a variety of techniques to take a deep look into the latent space and semantic space of the conditional text-to-image GANs model.

Text-to-Image Generation

Image-based material analysis of ancient historical documents

no code implementations2 Mar 2022 Thomas Reynolds, Maruf A. Dhali, Lambert Schomaker

Researchers continually perform corroborative tests to classify ancient historical documents based on the physical materials of their writing surfaces.

Binary Classification Classification

DiverGAN: An Efficient and Effective Single-Stage Framework for Diverse Text-to-Image Generation

no code implementations17 Nov 2021 Zhenxing Zhang, Lambert Schomaker

In this paper, we present an efficient and effective single-stage framework (DiverGAN) to generate diverse, plausible and semantically consistent images according to a natural-language description.

Sentence Sentence Embedding +2

GR-RNN: Global-Context Residual Recurrent Neural Networks for Writer Identification

1 code implementation11 Apr 2021 Sheng He, Lambert Schomaker

The spatial relationship between the sequence of fragments is modeled by the recurrent neural network (RNN) to strengthen the discriminative ability of the local fragment features.

Self-Imitation Learning by Planning

no code implementations25 Mar 2021 Sha Luo, Hamidreza Kasaei, Lambert Schomaker

Imitation learning (IL) enables robots to acquire skills quickly by transferring expert knowledge, which is widely adopted in reinforcement learning (RL) to initialize exploration.

Imitation Learning Motion Planning +2

DTGAN: Dual Attention Generative Adversarial Networks for Text-to-Image Generation

no code implementations5 Nov 2020 Zhenxing Zhang, Lambert Schomaker

Most existing text-to-image generation methods adopt a multi-stage modular architecture which has three significant problems: 1) Training multiple networks increases the run time and affects the convergence and stability of the generative model; 2) These approaches ignore the quality of early-stage generator images; 3) Many discriminators need to be trained.

Generative Adversarial Network Sentence +1

FragNet: Writer Identification using Deep Fragment Networks

1 code implementation16 Mar 2020 Sheng He, Lambert Schomaker

Writer identification based on a small amount of text is a challenging problem.

"Who is Driving around Me?" Unique Vehicle Instance Classification using Deep Neural Features

no code implementations29 Feb 2020 Tim Oosterhuis, Lambert Schomaker

Feature maps of a pretrained `YOLO' network are used to create 700 deep integrated feature signatures (DIFS) from 20 different images of 35 vehicles from a high resolution dataset and 340 signatures from 20 different images of 17 vehicles of a lower resolution tracking benchmark dataset.

General Classification Object +3

Learning to Grasp 3D Objects using Deep Residual U-Nets

1 code implementation10 Feb 2020 Yikun Li, Lambert Schomaker, S. Hamidreza Kasaei

Affordance detection is one of the challenging tasks in robotics because it must predict the grasp configuration for the object of interest in real-time to enable the robot to interact with the environment.

Robotics

Accelerating Reinforcement Learning for Reaching using Continuous Curriculum Learning

no code implementations7 Feb 2020 Sha Luo, Hamidreza Kasaei, Lambert Schomaker

Reinforcement learning has shown great promise in the training of robot behavior due to the sequential decision making characteristics.

Decision Making reinforcement-learning +1

Lifelong learning for text retrieval and recognition in historical handwritten document collections

no code implementations11 Dec 2019 Lambert Schomaker

This chapter provides an overview of the problems that need to be dealt with when constructing a lifelong-learning retrieval, recognition and indexing engine for large historical document collections in multiple scripts and languages, the Monk system.

Management Retrieval +1

A limited-size ensemble of homogeneous CNN/LSTMs for high-performance word classification

no code implementations6 Dec 2019 Mahya Ameryan, Lambert Schomaker

In this paper, an end-to-end convolutional LSTM Neural Network is used to handle both geometric variation and sequence variability.

Data Augmentation General Classification +1

A large-scale field test on word-image classification in large historical document collections using a traditional and two deep-learning methods

no code implementations17 Apr 2019 Lambert Schomaker

Additional tests using nearest mean on the output of the pre-final layer of an Inception V3 network, for each book, only yielded mediocre results (mean accuracy 49\%), but was not sensitive to high numbers of classes.

General Classification Image Classification

No Padding Please: Efficient Neural Handwriting Recognition

1 code implementation28 Feb 2019 Gideon Maillette de Buy Wenniger, Lambert Schomaker, Andy Way

Neural handwriting recognition (NHR) is the recognition of handwritten text with deep learning models, such as multi-dimensional long short-term memory (MDLSTM) recurrent neural networks.

Handwriting Recognition Handwritten Text Recognition

DeepOtsu: Document Enhancement and Binarization using Iterative Deep Learning

no code implementations18 Jan 2019 Sheng He, Lambert Schomaker

This paper presents a novel iterative deep learning framework and apply it for document enhancement and binarization.

Binarization Document Enhancement

Deep Adaptive Learning for Writer Identification based on Single Handwritten Word Images

no code implementations28 Sep 2018 Sheng He, Lambert Schomaker

Our proposed method transfers the benefits of the learned features of a convolutional neural network from an auxiliary task such as explicit content recognition to the main task of writer identification in a single procedure.

Multi-Task Learning Open-Ended Question Answering

Open Set Chinese Character Recognition using Multi-typed Attributes

no code implementations27 Aug 2018 Sheng He, Lambert Schomaker

Recognition of Off-line Chinese characters is still a challenging problem, especially in historical documents, not only in the number of classes extremely large in comparison to contemporary image retrieval methods, but also new unseen classes can be expected under open learning conditions (even for CNN).

Attribute Few-Shot Learning +4

Caveats on Bayesian and hidden-Markov models (v2.8)

no code implementations18 Aug 2016 Lambert Schomaker

This paper describes a number of fundamental and practical problems in the application of hidden-Markov models and Bayes when applied to cursive-script recognition.

General Classification Handwriting Recognition

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