References of "Ittoo, Ashwin"
     in
Bookmark and Share    
Full Text
See detailStyle coverage in Institutional Media
Gillain, Cédric ULiege; Ittoo, Ashwin ULiege; Lambert, Marie ULiege

Poster (2020, January 17)

Since 2017, the number of listed indices has exceeded the number of listed firms in the US markets. Exchange traded funds have grown in popularity and represent a liquid way to get exposure to equity ... [more ▼]

Since 2017, the number of listed indices has exceeded the number of listed firms in the US markets. Exchange traded funds have grown in popularity and represent a liquid way to get exposure to equity style investing. This situation raises some concerns regarding investors’ limitations in processing information. Whereas investors benefit from financial research for individual listed firms, no channel of information covers style or factor investing. We examine the informational role of financial media targeting institutional investors with regard to style investing. We extract equity style coverage and sentiment from news targeting institutional investors. We further investigate news style coverage implication on mutual fund managers trading behavior and holdings. Our work extends the literature on investor attention to news with a special emphasis to equity style investments. [less ▲]

Detailed reference viewed: 52 (1 ULiège)
Full Text
See detailNews-induced style seasonality
Gillain, Cédric ULiege; Ittoo, Ashwin ULiege; Lambert, Marie ULiege

Conference (2019, June 17)

This paper posits a new methodological approach to test how specialized media could influence the information transmission channels towards investors. We contribute to the literature on the role of media ... [more ▼]

This paper posits a new methodological approach to test how specialized media could influence the information transmission channels towards investors. We contribute to the literature on the role of media on investor limited attention, on seasonal effects in market anomalies and on the impact of news on market anomalies. Our approach is somewhat different from the current literature as we determine whether we can detect any seasonality in the news coverage of recommendations, analyses or opinions on investment styles provided by specialized press to institutional investors. Our paper not only contributes to the literature on market anomalies and seasonality effects in financial markets but also aligns itself with a new strand of research involving the application of text mining in finance. First, our text corpus gathers articles from specialized press targeting institutional investors. Such a corpus is unique and has never been investigated. Second, we build our own dictionaries from several statistical methods to extract style information from news flow. The method is innovative and our study is the first to investigate the seasonality in the underlying information channel. At this stage, the paper is mainly methodological and centered on small and large styles. Results will be extended to other investment styles in the near future and completed with statistical test of cyclicality and trend analysis. [less ▲]

Detailed reference viewed: 28 (1 ULiège)
Full Text
Peer Reviewed
See detailThe Q-codes: Metadata, Research data, and desiderata, oh my! Improving access to grey literature in family medicine
Resnick, Melissa P.; Ittoo, Ashwin ULiege; Jamoulle, Marc ULiege et al

in Farace, D.; Frantzen (Eds.) GL20 Proceedings Twentieth International Conference on Grey Literature “Research Data Fuels and Sustains Grey Literature”. (2019, February)

Abstract: Problem/Goal: In GL19’s “Indexing grey literature in General Practice: Family Medicine in the Eraof Semantic Web,” Jamoulle and colleagues(Jamoulle et al., 2018) propose the use of a relatively ... [more ▼]

Abstract: Problem/Goal: In GL19’s “Indexing grey literature in General Practice: Family Medicine in the Eraof Semantic Web,” Jamoulle and colleagues(Jamoulle et al., 2018) propose the use of a relatively new terminology (3CGP) to allow for the indexing and retrieval of (GP/FM) knowledge which otherwise would be lost, or difficult to locate. Though designed to meet Cimino’s (Cimino, 1998) twelve desiderata for the design of a controlled healthcare vocabulary, Jamoulle and colleagues (Jamoulle et al., 2018) acknowledge that a detailed requirement by requirement evaluation of 3CGP was not performed. The goal of this paper is to evaluate the Q-Codes component of the 3CGP terminology, in detail, with each of Cimino’s twelve desiderata. Research Method/Procedure: In our work, we will focus on qualitative analysis, whereby our taxonomy, the Q-Codes, and in particular, its vocabulary satisfies a standard set of desiderata. Qualitative analysis provides a simple and yet effective way to assess the Q-Codes taxonomy’s quality. We will briefly describe each of the desiderata and discuss how our taxonomy satisfies each one of them (or not). Anticipated Results of the Research: The qualitative evaluation is intended as an initial stage, which focuses on the Q-Codes taxonomy’s contents, namely, its vocabulary (e.g. terms and definitions). Our aim with the qualitative evaluation is to investigate whether our proposed taxonomy, and in particular its vocabulary, satisfies a set of desiderata. This will enable us to determine whether the knowledge acquisition and (part of) the conceptualization steps of our ontology development process have been performed correctly. We consider that validating our vocabulary against a set of well-defined desiderata is paramount before evaluating other aspects of the taxonomy (such as the relations). As a set of desiderata, we chose that proposed by Cimino in his seminal study entitled “Desiderata for controlled medical vocabularies in the twenty-first century” (Cimino, 1998). These desiderata ensure that our taxonomy can be successfully deployed and exploited in actual GM/FM applications / activities, such as indexing grey literature. The desiderata define a set of (desired) characteristics that (ideally all) standard medical vocabularies should satisfy. Thus, these desiderata help in alleviating inter-operability issues, with the use of common standards ensuring the efficient integration of our taxonomy with other medical vocabularies and resources (taxonomies, ontologies). From the results of this study, improvements can be made to the Q-Codes component of, and thus, the 3CGP terminology. This, in turn, improves the ability to index the grey literature with the 3CGP terminology, providing greater access to needed information. Indication of costs related to the project: This project has not been funded. 3CGP is placed under Attribution-Non-Commercial-Share-Alike4.0International(CCBY-NC-SA4.0) license. [less ▲]

Detailed reference viewed: 73 (21 ULiège)
Full Text
Peer Reviewed
See detailLeveraging Resources for Statistical Machine Translation on Asian Low Resource Languages
Trieu, Hai Long; Ittoo, Ashwin ULiege; Nguyen, Le Minh

in ACM Transactions on Asian and Low-Resource Language Information Processing (2019), 18(3),

Detailed reference viewed: 70 (12 ULiège)
See detailAlgorithmic Price Discrimination & Tacit Collusion
Gautier, Axel ULiege; Ittoo, Ashwin ULiege; Petit, Nicolas ULiege

Conference (2018, December 05)

Detailed reference viewed: 74 (7 ULiège)
Full Text
Peer Reviewed
See detailIndexing grey multilingual literature in General Practice: Family Medicine in the Era of Semantic Web
Jamoulle, Marc ULiege; Pizzanelli, Miguel; Cardillo, Elena et al

in Grey Journal (2018), Spring 2018(1),

Problem/Goal: Sharing the results of research with General Practitioners (GPs) is crucial for the survival of the discipline of General Practice / Family Medicine (GP/FM). The production of abstracts in ... [more ▼]

Problem/Goal: Sharing the results of research with General Practitioners (GPs) is crucial for the survival of the discipline of General Practice / Family Medicine (GP/FM). The production of abstracts in GP/FM probably exceeds 15,000 per year worldwide. Each abstract often represents two years of work for its authors and is expressed in local languages. Only 45% of them are published in indexed medical journals. Usual indexing systems like MeSH are not multilingual nor adapted to the particular field of GP/FM. Consequently, these abstracts are lacking bibliographic control and more than half of the research presented by GPs at congresses is lost. Considering the absence of appropriate domain-specific terminologies or classification systems, we propose a new multilingual indexing system. The existing International Classification of Primary Care (ICPC) is currently used for clinical purposes and has now been expanded with a taxonomy related to contextual aspects (called Q-Codes) such as education, research, practice organization, ethics or policy in GP/FM, currently not captured. The set is proposed under the name Core Content Classification in General Practice (3CGP). The aim is to facilitate indexing of GP/FM specific scientific work and to improve performance in information storage and retrieval for research purposes in this field. Research Method/Procedure: Using qualitative analysis, a corpus of 1,702 abstracts from six GP/FM- related European congresses was analyzed to identify main themes discussed by GPs (e.g., continuity, accessibility or medical ethics), handled in a domain-specific taxonomy called Q-Codes and translated in 8 languages. In addition, a methodology for building a lightweight ontology (in OWL-2) was applied to Q-Codes, adding object and datatype properties to the hierarchical relations, including mapping to the MeSH thesaurus, Babelnet (www.babelnet.org) and Dbpedia. Finally, the Q-Codes in 8 languages have been integrated in a healthcare terminology service (www.hetop.eu/q) with a companion website (http://3cgp.docpatient.net). Results of the Research: The creation and the on-line publication of this multilingual terminological resource (see http://3cgp.docpatient.net), for indexing abstracts and for facilitating Medline searches, could reduce loss of knowledge in the domain. The database is available in 12 human languages and in Web Ontology Language (OWL) for computer use. In addition, through better indexing of the grey literature (online database, congress abstracts, master’s and doctoral thesis) of which we show the first results, we hope to enhance the accessibility of research in GP/FM domain and promote the emergence of networks of researchers. Indication of costs related to the project: This project has not been funded. 3CGP is placed under Attribution-Non-Commercial-Share-Alike 4.0 International (CC BY-NC-SA 4.0). ICPC is copyrighted by WONCA. Keywords General practice, Terminology, Electronic publishing, Repository, Grey Literature. [less ▲]

Detailed reference viewed: 76 (5 ULiège)
Full Text
See detailBig Data & Competition Law: Price Discrimination vs. Tacit Collusion
Ittoo, Ashwin ULiege

in Big Data & Competition Law: Do New Technologies Require New Approaches to Competition Law? (2018, November)

Detailed reference viewed: 187 (5 ULiège)
Full Text
See detailAssessing and predicting review helpfulness
Hoffait, Anne-Sophie ULiege; Ittoo, Ashwin ULiege

Conference (2018, July)

Online customer reviews represent one of the most popular and accessible source of product/service information. E-commerce platforms enable users to vote for review for their helpfulness, which act as ... [more ▼]

Online customer reviews represent one of the most popular and accessible source of product/service information. E-commerce platforms enable users to vote for review for their helpfulness, which act as indicator of the review’s reliability for other readers. While numerous scientific publications have focused on the topic of predicting review helpfulness, several questions are yet to be addressed. Moreover, the current literature is highly heterogeneous, leading to inconsistent and contradictory results. Our aim with this study is to synthesize and critically assess the state of the art in research on what makes a review helpful and on predicting review helpfulness. Our primary findings reveal the use of highly varying datasets; a huge plethora of distinct features, including some which are counter-intuitive, as the count of n-letters words or of line breaks; the lack of benchmarks for comparing and assessing algorithms’ performance in predicting review helpfulness or the application of machine learning techniques overlooking the statistical characteristics of the data resulting in flawed results. We propose several research directions to overcome these gaps and advance the state of the art, such as a standard features set and algorithms to be used as benchmark for assessing future research. We also propose new approaches based on recent innovations in argumentation mining and deep learning as well as more advanced statistic techniques, such as lasso/ridge regression. [less ▲]

Detailed reference viewed: 160 (5 ULiège)
Full Text
Peer Reviewed
See detailIndexing grey multilingual literature in General Practice: Family medicine in the era of semantic web
Jamoulle, Marc ULiege; Cardillo, Elena; Ittoo, Ashwin ULiege et al

in International Conference Series on Grey Literature (2018), 2017-October

Problem/Goal: Sharing the results of research with General Practitioners (GPs) is crucial for the survival of the discipline of General Practice / Family Medicine (GP/FM). The production of abstracts in ... [more ▼]

Problem/Goal: Sharing the results of research with General Practitioners (GPs) is crucial for the survival of the discipline of General Practice / Family Medicine (GP/FM). The production of abstracts in GP/FM probably exceeds 15,000 per year worldwide. Each abstract often represents two years of work for its authors and is expressed in local languages. Only 45% of them are published in indexed medical journals. Usual indexing systems like MeSH are not multilingual nor adapted to the particular field of GP/FM. Consequently, these abstracts are lacking bibliographic control and more than half of the research presented by GPs at congresses is lost. Considering the absence of appropriate domain-specific terminologies or classification systems, we propose a new multilingual indexing system. The existing International Classification of Primary Care (ICPC) is currently used for clinical purposes and has now been expanded with a taxonomy related to contextual aspects (called Q-Codes) such as education, research, practice organization, ethics or policy in GP/FM, currently not captured. The set is proposed under the name Core Content Classification in General Practice (3CGP). The aim is to facilitate indexing of GP/FM specific scientific work and to improve performance in information storage and retrieval for research purposes in this field. Research Method/Procedure: Using qualitative analysis, a corpus of 1,702 abstracts from six GP/FM- related European congresses was analyzed to identify main themes discussed by GPs (e.g., continuity, accessibility or medical ethics), handled in a domain-specific taxonomy called Q-Codes and translated in 8 languages. In addition, a methodology for building a lightweight ontology (in OWL-2) was applied to Q-Codes, adding object and datatype properties to the hierarchical relations, including mapping to the MeSH thesaurus, Babelnet (www.babelnet.org) and Dbpedia. Finally, the Q-Codes in 8 languages have been integrated healthcare terminology service (www.hetop.eu/q) with a companion website (http://3cgp.docpatient.net). Anticipated Results of the Research: The creation and the on-line publication of this multilingual terminological resource, for indexing abstracts and for facilitating Medline searches, could reduce loss of knowledge in the domain. In addition, through better indexing of the grey literature (congress abstracts, master’s and doctoral thesis), we hope to enhance the accessibility of research results of GP/FM domain and promote the emergence of networks of researchers. First result of experimental implementations of the new indexing system will be presented. Indication of costs related to the project: This project has not been funded. 3CGP is placed under Attribution-Non-Commercial-Share-Alike 4.0 International (CC BY-NC-SA 4.0). ICPC is copyrighted by WONCA. © 2018 Oriental Scientific Publishing Company. All rights reserved. [less ▲]

Detailed reference viewed: 173 (12 ULiège)
Full Text
See detailAssessing and predicting review helpfulness: Critical review, open challenges and research agenda
Hoffait, Anne-Sophie ULiege; Ittoo, Ashwin ULiege; Schyns, Michael ULiege

E-print/Working paper (2018)

The issues of determining what makes a customer review helpful and how to predict review helpfulness have received significant attention in recent years. However, the current literature is highly ... [more ▼]

The issues of determining what makes a customer review helpful and how to predict review helpfulness have received significant attention in recent years. However, the current literature is highly heterogeneous with contradictory findings. We critically synthesize extant literature and identify factors responsible for these contradictions which we classify into four dimensions, viz. datasets, features, approach and review helpfulness operationalization, and clarify the prevailing confusion. We highlight research gaps, and propose novel research directions to bridge them and to advance the state-of-the-art. We provide resources such as synthetic tables, which summarize past research and develop a (future) research roadmap. These resources not only provide a concise overview of current research, but also illustrate its heterogeneity and serve as a valuable basis to ground future research. [less ▲]

Detailed reference viewed: 115 (11 ULiège)
Full Text
Peer Reviewed
See detailGeneration of Parallel Corpus for Low Resource Language Translation
Trieu, Long Hai; Ittoo, Ashwin ULiege

E-print/Working paper (2018)

Detailed reference viewed: 27 (1 ULiège)
Full Text
Peer Reviewed
See detailDevelopment, dissemination, and applications of a new terminological resource the Q-Code taxonomy for professional aspects of General Practice / Family Medicine.
Jamoulle, Marc ULiege; Resnick, Melissa; Grosjean, Julien et al

in European Journal of General Practice (2017), accepted

Abstract of Background Paper: Background: While documentation of clinical aspects of General Practice/Family Medicine (GP/FM) is assured by the International Classification of Primary Care (ICPC), there ... [more ▼]

Abstract of Background Paper: Background: While documentation of clinical aspects of General Practice/Family Medicine (GP/FM) is assured by the International Classification of Primary Care (ICPC), there is no taxonomy for the professional aspects (context and management) of GP/FM. Aim: To present the development, dissemination, applications, and resulting face validity of the Q-Codes taxonomy specifically designed to describe contextual features of GP/FM, proposed as an extension to the ICPC Development: The Q-Codes taxonomy was developed from Lamberts’ seminal idea for indexing contextual content (1987) by a multi-disciplinary team of knowledge engineers, linguists and general practitioners, through a qualitative and iterative analysis of 1702 abstracts from six GP/FM conferences using Atlas.ti software. A total of 182 concepts, called Q-codes, representing professional aspects of GP/FM, were identified and organised in a taxonomy. Dissemination: The taxonomy is published as an on-line terminological resource, using semantic web techniques and Web ontology language (OWL) (www.hetop.eu/Q). Each Q-code is identified with an Unique Resource Identifier (URI), and provided with preferred terms, formal definitions in eight languages (pt, es, en, fr, nl, ko, vi, tr) and search filters for Medline and web searches. Applications. . This taxonomy has already been used to support queries in bibliographic databases (e.g. Medline), to facilitate indexing of grey literature in GP/FM as congress abstracts, master theses, websites and as an educational tool in vocational teaching, Conclusions: The rapidly growing list of practical applications provides face-validity for the usefulness of this freely available new terminological resource. [less ▲]

Detailed reference viewed: 266 (12 ULiège)
Full Text
Peer Reviewed
See detailAlgorithmic Pricing Agents and Tacit Collusion: A Technological Perspective
Ittoo, Ashwin ULiege; Petit, Nicolas

in IO: Regulation, Antitrust & Privatization SSRN (2017)

Detailed reference viewed: 187 (7 ULiège)
Full Text
Peer Reviewed
See detailAnalysis of definitions of General Practice/Family Medicine and Primary Health Care
Jamoulle, Marc ULiege; Resnick, Melissa; Ittoo, Ashwin ULiege et al

in British Journal of General Practice (2017), 0050

Abstract Background There are numerous definitions of General Practice and Family Medicine (GP/FM) and Primary Health Care (PHC), but the distinction between the two concepts is unclear. Aim To conduct a ... [more ▼]

Abstract Background There are numerous definitions of General Practice and Family Medicine (GP/FM) and Primary Health Care (PHC), but the distinction between the two concepts is unclear. Aim To conduct a terminological analysis of a set of definitions of GP/FM and of PHC, to clarify what binds and what distinguishes these two concepts. Design The terms of 20 definitions were collected in two bags of words (one for GP/FM and one for PHC terms). A terminological analysis of these two bags of words was performed to prioritize the terms and analyze their world of reference. Methods The two collected bags of words were extracted with Vocabgrabber®, configured in two term butts using Wordle®, and further explored for similarities using Tropes®. The prioritized terms were analyzed using the Aristotelian approach to categorization of things. Results Although continuity of care (with person-centered approach and shared decision making) is the central issue of the two sets, the two sets of definitions differ greatly in content. The prioritized terms specific to GP/FM (community, medicine, responsibility, individual, problem, needs, ...) are different from prioritized terms specific to PHC (home, team, promotion, collaborator, engagement, neighborhood, medical center…). Conclusion Terminological analysis of the definitions for GP/FM and PHC shows two entities which are overlapping but distinct, necessitating a different taxonomic approach and different bibliographic search strategies. [less ▲]

Detailed reference viewed: 405 (15 ULiège)
Full Text
See detailNatural Language Processing and Information Systems
Frasincar, Flavius; Ittoo, Ashwin ULiege; Nguyen, Le Minh et al

Book published by Springer (2017)

Detailed reference viewed: 214 (4 ULiège)
Full Text
Peer Reviewed
See detailA terminology in General Practice / Family Medicine to represent non-clinical aspects for various usages
Jamoulle, Marc ULiege; Grosjean, Julien; Ittoo, Ashwin ULiege et al

in R. Randell et al. (Ed.) Informatics for Health: Connected Citizen-Led Wellness and Population Health (2017, April 24)

Abstract. The hereby proposed terminology called “Q-Codes” can be defined as an extension of the International Classification of Primary Care (ICPC-2). It deals with non-clinical concepts that are ... [more ▼]

Abstract. The hereby proposed terminology called “Q-Codes” can be defined as an extension of the International Classification of Primary Care (ICPC-2). It deals with non-clinical concepts that are relevant in General Practice/Family Medicine (GP/FM). This terminology is a good way to put an emphasis on underestimated topics such as Teaching, Patient issues or Ethics. It aims at indexing GP/FM documents such as congress abstracts and theses to get a more comprehensive view about the GP/FM domain. The 182 identified Q-Codes have been very precisely defined by a college of experts (physicians and terminologists) from twelve countries. The result is available on the Health Terminology/Ontology Portal (http://www.hetop.org/Q) and formatted in OWL-2 for further semantic considerations and will be used to index the 2016 WONCA World congress communications. [less ▲]

Detailed reference viewed: 156 (21 ULiège)
Full Text
Peer Reviewed
See detailText analytics in industry: Challenges, desiderata and trends
Ittoo, Ashwin ULiege; Nguyen, Le Minh; van den Bosch, Antal

in Computers in Industry (2016), (78),

Detailed reference viewed: 151 (25 ULiège)
Full Text
Peer Reviewed
See detailSpecial issue on natural language processing and text analytics in industry
Ittoo, Ashwin ULiege; Nguyen, Le Minh; van den Bosch, Antal

in Computers in Industry (2016), 78

Detailed reference viewed: 78 (8 ULiège)
Full Text
Peer Reviewed
See detailEditorial: Special issue on natural language processing and text analytics in industry
Ittoo, Ashwin ULiege; Nguyen, Le Min; van den Bosch, Antal

in Computers in Industry (2016)

Detailed reference viewed: 223 (19 ULiège)