Publications
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Optimization of acquisition and post processing strategies for deconvolution-based perfusion quantification of breast tumorsusing T1-weighted DCE MRI Vrije Universiteit Brussel
Introduction:
MR derived Tumor Blood Flow (TBF) has the potential to become a noninvasive angiogenic marker that could also be explored in the context of anti-angiogenic therapies for which in vivo biomarkers are currently lacking [1]. Thus, an accurate assessment of TBF can become crucial in deciding the best management for breast cancer patients. We have recently shown the feasibility of quantifying perfusion parameters in human breast ...
MR derived Tumor Blood Flow (TBF) has the potential to become a noninvasive angiogenic marker that could also be explored in the context of anti-angiogenic therapies for which in vivo biomarkers are currently lacking [1]. Thus, an accurate assessment of TBF can become crucial in deciding the best management for breast cancer patients. We have recently shown the feasibility of quantifying perfusion parameters in human breast ...
Modelling Language Acquisition through Syntactico-Semantic Pattern Finding KU Leuven
Usage-based theories of language acquisition have extensively documented the processes by which children acquire language through communicative interaction. Notably, Tomasello (2003) distinguishes two main cognitive capacities that underlie human language acquisition: intention reading and pattern finding. Intention reading is the process by which children try to continuously reconstruct the intended meaning of their interlocutors. Pattern ...
Brain of words. The impact of form- and meaning-focused instruction on L2 lexical acquisition as measured by behavioral and neurocognitive indices KU Leuven
A fundamental question in research on instructed second language (L2) acquisition concerns the impact of form- or meaning-focused instruction on L2 learning. While substantial research has addressed the impact of those types of instruction on the acquisition of grammar, far fewer studies have compared their effectiveness for vocabulary acquisition. In addition, those studies have often exclusively assessed student's acquisition of word meaning ...
Lexical category acquisition is facilitated by uncertainty in distributional co-occurrences University of Antwerp
This paper analyzes distributional properties that facilitate the categorization of words into lexical categories. First, word-context co-occurrence counts were collected using corpora of transcribed English child-directed speech. Then, an unsupervised k-nearest neighbor algorithm was used to categorize words into lexical categories. The categorization outcome was regressed over three main distributional predictors computed for each word, ...
METastasis Reporting and Data System for Prostate Cancer: Practical Guidelines for Acquisition, Interpretation, and Reporting of Whole-body Magnetic Resonance Imaging-based Evaluations of Multiorgan Involvement in Advanced Prostate Cancer KU Leuven
CONTEXT: Comparative reviews of whole-body magnetic resonance imaging (WB-MRI) and positron emission tomography/computed tomography (CT; with different radiotracers) have shown that metastasis detection in advanced cancers is more accurate than with currently used CT and bone scans. However, the ability of WB-MRI and positron emission tomography/CT to assess therapeutic benefits has not been comprehensively evaluated. There is also considerable ...
Towards a model of prediction-based syntactic category acquisition University of Antwerp
We present a prototype model, based on a combination of count-based distributional semantics and prediction-based neural word embeddings, which learns about syntactic categories as a function of (1) writing contextual, phonological, and lexical-stress-related information to memory and (2) predicting upcoming context words based on memorized information. The system is a first step towards utilizing recently popular methods from Natural Language ...
Which distributional cues help the most? Unsupervised context selection for lexical category acquisition University of Antwerp
Starting from the distributional bootstrapping hypothesis, we propose an unsupervised model that selects the most useful distributional information according to its salience in the input, incorporating psycholinguistic evidence. With a supervised Parts-of-Speech tagging experiment, we provide preliminary results suggesting that the distributional contexts extracted by our model yield similar performances as compared to current approaches from ...
Watch and Learn?! Five studies into the use and effectiveness of captioned video for L2 listening comprehension and vocabulary acquisition. KU Leuven
This thesis, which is organized around five empirical research studies, aims at investigating how video can be enriched in order to support second language (L2) learners listening comprehension and the cognitive processes that are involved in L2 vocabulary acquisition. In this dissertation, we focus on the use and effectiveness of different types of L2 subtitles or captioning (i.e. both the on-screen text and the video are presented in the L2) ...
Mere intention to perform painful movements elicits fear of movement-related pain: An experimental study on fear acquisition beyond actual movements KU Leuven
UNLABELLED: Fresh empirical evidence supports the notion that fear of movement-related pain can be acquired through associative learning. In the context of these findings, 2 ideas are appealing, yet uninvestigated. The first is that merely the intention to perform a painful movement acts as a covert conditioned stimulus (CS) inducing defensive fear responses (ie, gaining excitatory properties following Pavlovian acquisition). The second idea is ...