Patrice C. Roy

@inproceedings{nokey,

title = {Assessing Knee Osteoarthritis Severity and Biomechanical Changes After Total Knee Arthroplasty Using Self-Organizing Maps},

author = {Kathryn Young-Shand and Patrice C. Roy and Michael Dunbar and Syed Sibte Raza Abidi and J. Wilson},

year  = {2022},

date = {2022-06-14},

urldate = {2022-06-14},

booktitle = {20th International Conference on Artificial Intelligence in Medicine (AIME 2022), June 14-17, 2022, Halifax},

publisher = {Springer},

keywords = {Self-Organizing Maps, Total knee arthroplasty},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Abidi2019,

title = {AI-Driven Pathology Laboratory Utilization Management via Data- and Knowledge-Based Analytics},

author = {Syed Sibte Raza Abidi and Jaber Rad and Ashraf Abusharekh and Patrice C. Roy and William Van Woensel and Samina Raza Abidi and Calvino Cheng and Bryan D. Crocker and Manal O. Elnenaei},

url = {https://link.springer.com/chapter/10.1007/978-3-030-21642-9_30},

doi = {10.1007/978-3-030-21642-9_30},

isbn = {978-3-030-21642-9},

year  = {2019},

date = {2019-06-26},

booktitle = {17th Conf. on Artificial Intelligence in Medicine (AIME2019), June 26-29},

pages = {241--251},

publisher = {Springer International Publishing},

address = {Poznan, Poland},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2019,

title = {Mobile Indoor Localization with Bluetooth Beacons in a Pediatric Emergency Department Using Clustering, Rule-based Classification and High-level Heuristics},

author = {Patrice C. Roy and William Van Woensel and Andy Wilcox and Syed Sibte Raza Abidi},

url = {https://link.springer.com/chapter/10.1007/978-3-030-21642-9_27},

doi = {10.1007/978-3-030-21642-9_27},

isbn = {978-3-030-21642-9},

year  = {2019},

date = {2019-06-26},

booktitle = {17th Conf. on Artificial Intelligence in Medicine (AIME2019), June 26-29},

pages = {216--226},

publisher = {Springer International Publishing},

address = {Poznan, Poland},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Young-Shand2019b,

title = {Clinical and Biomechanical Cluster Classification Before TKA Impacts Functional Outcome},

author = {Kathryn Young-Shand and Patrice C. Roy and Syed Sibte Raza Abidi and Michael Dunbar and Janie Astephen Wilson},

year  = {2019},

date = {2019-06-19},

booktitle = {2nd International Combined Meeting of Orthopaedic Research Societies, June 19-22, 2019, Montreal, Canada},

abstract = {Purpose:

Identifying knee osteoarthritis (OA) patient phenotypes is relevant to assessing treatment efficacy, yet biomechanical variability has not been applied to phenotyping. This study aimed to identify demographic and gait related groups (clusters) among total knee arthroplasty (TKA) candidates, and examine inter-cluster differences in gait feature improvement post-TKA.



 





Method:

Knee OA patients scheduled for TKA underwent three-dimensional gait analysis one-week pre and one-year post-TKA, capturing lower-limb external ground reaction forces and kinematics using a force platform and optoelectronic motion capture. Principal component analysis was applied to frontal and sagittal knee angle and moment waveforms (n=135 pre-TKA, n=106 post-TKA), resulting in a new uncorrelated dataset of subject PCscores and PC vectors, describing major modes of variability throughout one gait cycle (0-100%). Demographics (age, gender, body mass index (BMI), gait speed), and gait angle and moment PCscores were standardized and assessed for outliers. One patient exceeding Tukey’s outer (3*IQR) fence was removed. Two-dimensional multidimensional scaling followed by k-medoids clustering was applied to scaled demographics and pre-TKA PCscores [134x15]. Number of clusters (k=2:10) were assessed by silhouette coefficients, s, and stability by Adjusted Rand Indices (ARI) of 100 data subsets. Clusters were validated by examining inter-cluster differences at baseline, and inter-cluster gait changes (PostPCscore–PrePCscore, n=105) by k-way ANOVA and Tukey's honestly significant difference (HSD) criterion.





Results:

Four (k=4) TKA candidate groups yielded optimum clustering metrics (s=0.4, ARI=0.75). Cluster 1 was all-males (male:female=19:0) who walked with faster gait speeds (1>2,3), larger flexion angle magnitudes and stance-phase angle range (PC1 & PC4 1>2,3,4), and more flexion (PC2 1>2,3,4) and adduction moment (PC2 & PC3 1>2,3) range patterns. Cluster 1 had the most dynamic kinematics and kinetic loading/unloading range amongst the clusters, representing a higher-functioning (less “stiff”) male subset. Cluster 2 captured older (2>1,3) males (31:1) with slower gait speeds (2<1,4), and less flexion moment (PC2 2<1,4) and adduction moment (PC2 2<1,4) range, describing an older, stiff-gait male subset. Cluster 3 was mostly (4:36) females with slower gait speeds (3<1,4), higher BMIs (3>4), and lower flexion angle magnitude (PC1 3<1,2,4) and flexion moment range (PC2 3<1,2,4) features. Cluster 3 showed the “stiffest” gait amongst the clusters, representing a more-obese, stiff-gait female subset. Cluster 4 was mostly (2:41) females with faster gait speeds (4>2,3) and less stiff kinematic and kinetic patterns relative to Clusters 2 and 3, representing a higher-functioning female subset. Radiographic severity did not differ between clusters (Kellgren-Lawrence Grade, p=0.9, n=102), and after removing demographics and re-clustering, gender differences remained (p<0.04). Pre-TKA, higher-functioning clusters (1&4) had more dynamic loading/un-loading kinetic patterns. Post-TKA, high-functioning clusters experienced less gait improvement (flexion angle PC2, 1,4<3, p≥0.004; flexion moment PC2, 4<2,3), with some sagittal range patterns decreasing postoperatively.





Conclusion:

TKA candidates can be characterized by four clusters, differing by demographics and biomechanical severity features. Post-TKA, functional gains were cluster-specific; stiff-gait clusters experienced more improvement, while higher-functioning clusters experienced less gain and showed some decline. Results suggest the presence of cohorts who may not benefit functionally from TKA. Cluster profiling may support triaging and developing targeted OA treatment strategies, meeting individual function needs.},

keywords = {Clustering, Total knee arthroplasty},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Young-Shand2019,

title = {Clinical and Biomechanical Cluster Classification Before TKA Impacts Functional Outcome},

author = {Kathryn Young-Shand and Patrice C. Roy and Syed Sibte Raza Abidi and Michael Dunbar and Janie Astephen Wilson},

year  = {2019},

date = {2019-02-02},

booktitle = {Orthopaedic Research Society Conference (ORS), February 2-5, 2019  Austin, Texas, USA},

note = {Recipient of the American Academy of Orthopaedic Surgeons (AAOS) Women’s Health Advisory Board (WHAB) Award},

keywords = {Clustering, Total knee arthroplasty},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{ADL201,

title = {Achieving Pro-Active Guidance of Patients through ADL via Knowledge-Driven Activity Recognition and Complex Semantic Workflows},

author = {William Van Woensel and Patrice C. Roy and Syed Sibte Raza Abidi},

url = {https://niche.cs.dal.ca/wp-content/uploads/2017/12/paper_camera-ready.pdf},

year  = {2017},

date = {2017-12-06},

booktitle = {10th International Conference on Semantic Web Applications and Tools for Life Sciences},

publisher = {CEUR},

address = {Rome, Italy},

keywords = {Activity Recognition, Ambient Intelligence, Semantic Web reasoning},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2017,

title = {Monitoring Activities Related to Medication Adherence in Ambient Assisted Living Environments},

author = {Patrice C. Roy and Samina Raza Abidi and Syed Sibte Raza Abidi},

editor = {Rebecca Randell and Ronald Cornet and Colin McCowan and Niels Peek and Philip J. Scott},

doi = {10.3233/978-1-61499-753-5-28},

issn = {1879-8365},

year  = {2017},

date = {2017-04-24},

booktitle = {Informatics for Health: Connected Citizen-Led Wellness and Population Health (MIE 2017), Manchester, UK, April 24th-26th 2017},

volume = {235},

pages = {28-32},

publisher = {European Federation for Medical Informatics (EFMI) and IOS Press},

series = {Studies in Health Technology and Informatics},

abstract = {A recent trend in healthcare is to motivate patients to self-manage their health conditions in home-based settings. Medication adherence is an important aspect in disease self-management since sub-optimal medication adherence by the patient can lead to serious healthcare costs and discomfort for the patient. In order to alleviate the limitations of self-reported medication adherence, we can use ambient assistive living (AAL) technologies in smart environments. Activity recognition services allow to retrieve self-management information related to medication adherence in a less intrusive way. By remotely monitor compliance with medication adherence, self-management program’s interventions can be tailored and adapted based on the observed patient’s behaviour. To address this challenge, we present an AAL framework that monitor activities related to medication adherence.},

keywords = {Activity Recognition, Ambient Intelligence, medication adherence},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{DBLP:conf/ruleml/WoenselRA16,

title = {SmartRL: A Context-Sensitive, Ontology-Based Rule Language for Assisted Living in Smart Environments},

author = {William Van Woensel and Patrice C. Roy and Syed Sibte Raza Abidi},

url = {http://dx.doi.org/10.1007/978-3-319-42019-6_22},

doi = {10.1007/978-3-319-42019-6_22},

year  = {2016},

date = {2016-01-01},

booktitle = {Rule Technologies. Research, Tools, and Applications - 10th International Symposium, RuleML 2016, Stony Brook, NY, USA, July 6-9, 2016. Proceedings},

pages = {341--349},

crossref = {DBLP:conf/ruleml/2016},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{DBLP:conf/medinfo/WoenselRAA15,

title = {A Mobile and Intelligent Patient Diary for Chronic Disease Self-Management},

author = {William Van Woensel and Patrice C. Roy and Samina Raza Abidi and Syed Sibte Raza Abidi},

url = {http://dx.doi.org/10.3233/978-1-61499-564-7-118},

doi = {10.3233/978-1-61499-564-7-118},

isbn = {978-1-61499-563-0},

year  = {2015},

date = {2015-08-23},

booktitle = {MEDINFO 2015: eHealth-enabled Health - Proceedings of the 15th World Congress on Health and Biomedical Informatics, Sao Paulo, Brazil},

pages = {118--122},

publisher = {IOS Press},

keywords = {Chronic Disease Management, Mobile Health, Patient Diary, Patient Empowerment, Self-Management},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{WIC2014,

title = {A Comparison of Mobile Rule Engines for Reasoning on Semantic Web Based Health Data},

author = { William Van Woensel and Newres Al Haider and Patrice C. Roy and Ahmad Marwan Ahmad and Syed Sibte Raza Abidi},

editor = { Dominik Śl?zak and Hung Son Nguyen and Marek Reformat and Eugene Santos Jr.},

url = {http://web.cs.dal.ca/~woensel/paper/A Comparison of Mobile Rule Engines for Reasoning on Semantic Web Based Health Data.pdf},

year  = {2014},

date = {2014-01-01},

booktitle = {2014 IEEE/WIC/ACM International Conference on Web Intelligence (WI 2014)},

pages = {126--133},

publisher = {IEEE Computer Society Press},

address = {Warsaw, Poland},

keywords = {},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2014,

title = {Towards Guideline Compliant Clinical Decision Support System Integration in Smart and Mobile Environments: Formalizing and Using Clinical Guidelines For Diagnosing Sleep Apnea},

author = { Patrice C. Roy and Newres Al Haider and William Van Woensel and Ahmad Marwan Ahmad and Syed Sibte Raza Abidi},

url = {http://web.cs.dal.ca/~woensel/paper/Towards Guideline Compliant Clinical Decision Support System Integration in Smart and Mobile Environments.pdf},

year  = {2014},

date = {2014-01-01},

booktitle = {AAAI Workshop on Artificial Intelligence Applied to Assistive Technologies and Smart Environments (ATSE 2014)},

publisher = {AAAI Press},

address = {Quebec, Canada},

keywords = {Clinical Decision Support Systems, Clinical Practice Guidelines, Health Informatics},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2012,

title = {Generic Architecture for Ambient Intelligence based on an Organizational Centered Multi-Agent Approach},

author = {Patrice C. Roy and Nicolas Lachiche and Pierre Gançarski and Alban Meffre and Christophe Collet},

editor = {Anind K. Dey and Hao-Hua Chu and Gillian Hayes},

isbn = {978-1-4503-1224-0},

year  = {2012},

date = {2012-09-05},

booktitle = {Proceedings of the 2012 ACM Conference on Ubiquitous Computing (UbiComp'12). Adaptable Service Delivery in Smart Environments Workshop Session.},

pages = {786-789},

publisher = {ACM},

address = {Pittsburgh, PA, USA},

keywords = {Ambient Intelligence, Multi-Agent System, Smart Homes},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2010,

title = {Possibilistic Behavior Recognition in Smart Homes for Cognitive Assistance},

author = {Patrice C. Roy and Sylvain Giroux and Bruno Bouchard and Abdenour Bouzouane and Clifton Phua and Andrei Tolstikov and Jit Biswas},

year  = {2010},

date = {2010-07-11},

booktitle = {AAAI Workshop on Plan, Activity, and Intent Recognition (PAIR) 2010, the Twenty-Fourth AAAI Conference on Artificial Intelligence (AAAI-10)},

pages = {53-60},

publisher = {AAAI Press},

address = {Atlanta, GA, USA},

keywords = {Activity Recognition, Possibility theory, Smart Homes},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2010b,

title = {Possibilistic Activity Recognition},

author = {Patrice C. Roy and Bruno Bouchard and Abdenour Bouzouane and Sylvain Giroux},

year  = {2010},

date = {2010-01-22},

booktitle = {Proceedings of the International Conference on Agents and Artificial Intelligence 2010 (ICAART'10)},

pages = {1-6},

publisher = {INSTICC},

organization = {Valencia, Spain},

keywords = {Activity Recognition, Possibility theory, Smart Homes},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Phua2009,

title = {Plan Recognition based on Sensor Produced Micro-Context for Eldercare},

author = {Clifton Phua and Jit Biswas and Andrei Tolstikov and Victor Siang Fook Foo and Jayachandra Maniyeri and Aung Phyo Wai Aung and Patrice C. Roy and Hamdi Aloulou and Mohamed Ali Feki and Sylvain Giroux and Abdenour Bouzouane and Bruno Bouchard},

year  = {2009},

date = {2009-09-27},

booktitle = {Proceedings of The First International Workshop on Context-Awareness in Smart Environments: Background, Achievements and Challenges (CASEbac 2009). Co-located event of the 18th IEEE International Symp},

pages = {39-46},

address = {Toyama, Japan},

keywords = {Activity Recognition, Plan Recognition, Smart Homes},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2009b,

title = {A Possibilistic Model for Activity Recognition in Smart Homes},

author = {Patrice C. Roy and Bruno Bouchard and Abdenour Bouzouane and Sylvain Giroux},

year  = {2009},

date = {2009-09-27},

booktitle = {Proceedings of The First International Workshop on Context-Awareness in Smart Environments: Background, Achievements and Challenges (CASEbac 2009). Co-located event of the 18th IEEE International Symp},

pages = {9-16},

address = {Toyama, Japan},

keywords = {Activity Recognition, Possibility theory, Smart Homes},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2009b,

title = {Ambient Activity Recognition: A Possibilistic Approach},

author = {Patrice C. Roy and Bruno Bouchard and Abdenour Bouzouane and Sylvain Giroux},

editor = {António Palma dos Reis},

isbn = {978-972-8924-87-4},

year  = {2009},

date = {2009-06-21},

booktitle = {Proceedings of the IADIS International Conference on Intelligent Systems and Agents (ISA'09)},

pages = {231-235},

publisher = {IADIS},

address = {Algarve, Portugal},

keywords = {Activity Recognition, Possibility theory, Smart Homes},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Bouchard2008,

title = {Towards an Extension of the COACH Task Guidance System: Activity Recognition of Alzheimer's Patients},

author = {Bruno Bouchard and Patrice C. Roy and Abdenour Bouzouane and Sylvain Giroux and Alex Mihailidis},

editor = {Juan Carlos Augusto and Daniel Shapiro and Hamid Aghajan},

year  = {2008},

date = {2008-07-21},

booktitle = {Proceedings of the 3rd Workshop on Artificial Intelligence Techniques for Ambient Intelligence (AITAmI'08), Patras, Greece. 21st-22nd of July 2008. Co-located event of the 18th European Conference on},

pages = {16-20},

address = {Patras, Grece},

keywords = {Activity Recognition, Description Logic, Imprecise Probability, Lattice Theory},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Bouchard2008b,

title = {Recognition Model for Alzheimer's Patients: Extension of the COACH Task Guidance System,},

author = {Bruno Bouchard and Patrice C. Roy and Abdenour Bouzouane and Sylvain Giroux and Alex Mihailidis},

editor = {Malik Ghallab and Constantine D. Spyropoulos and Nikos Fakotakis and Nikos Avouris},

year  = {2008},

date = {2008-07-21},

booktitle = {Proc. of the 18th European Conference on Artificial Intelligence (ECAI'08)},

pages = {811-812},

publisher = {IOS Press},

address = {Patras, Grece},

keywords = {Activity Recognition, Description Logic, Imprecise Probability, Lattice Theory},

pubstate = {published},

tppubtype = {inproceedings}

}

@inproceedings{Roy2007,

title = {A hybrid plan recognition model for Alzheimer's patients: interleaved-erroneous dilemma},

author = {Patrice C. Roy and Bruno Bouchard and Abdenour Bouzouane and Sylvain Giroux},

editor = {Tsau Young Lin and Jeffrey M. Bradshaw and Matthias Klusch and Chengqi Zhang and Andrei Broder and Howard Ho},

isbn = {978-0-7695-3027-7},

year  = {2007},

date = {2007-11-02},

booktitle = {Proc. of the 7th IEEE/WCI/ACM International Conference on Intelligent Agent Technology (IAT'07)},

pages = {131-137},

publisher = {IEEE},

address = {Fremont, CA, USA},

keywords = {Activity Recognition, Alzheimer, Description Logic, Imprecise Probability, Lattice Theory},

pubstate = {published},

tppubtype = {inproceedings}

}