user modeling for the mars medical assistant
DESCRIPTION
User Modeling for the Mars Medical Assistant. MCS Project By Mihir Kulkarni. The Presentation. User Modeling (UM) The Mars Medical Assistant User Modeling in the context of MMA. User Modeling. Definition: A technique for constructing an explicit representation of the user. Advantages: - PowerPoint PPT PresentationTRANSCRIPT
User Modeling for the Mars User Modeling for the Mars Medical AssistantMedical Assistant
MCS ProjectMCS Project
ByBy
Mihir KulkarniMihir Kulkarni
The PresentationThe Presentation
User Modeling (UM)User Modeling (UM) The Mars Medical AssistantThe Mars Medical Assistant User Modeling in the context of User Modeling in the context of
MMAMMA
User ModelingUser Modeling
Definition:Definition:– A technique for constructing an explicit A technique for constructing an explicit
representation of the user.representation of the user. Advantages:Advantages:
– Allows adaptation of the system Allows adaptation of the system behaviorbehavior
– Improves capabilities to understand and Improves capabilities to understand and process user requests.process user requests.
– Improves usability of the systemImproves usability of the system
Classification of UMClassification of UM
User Models can be classified User Models can be classified based on 3 criteria:based on 3 criteria:– GranularityGranularity– Temporal ExtentTemporal Extent– Representation of user knowledge.Representation of user knowledge.
Tasks involved in UMTasks involved in UM
1.1. Acquisition of User ModelAcquisition of User Model
– Explicitly: specified by the users or Explicitly: specified by the users or the the system designer. system designer.
– Implicitly: inferred on the basis of Implicitly: inferred on the basis of user’s user’s behavior and behavior and interactions with interactions with the system. the system.
Tasks involved in UMTasks involved in UM
2.2. Representation of User ModelRepresentation of User Model• Depends on the type of application Depends on the type of application
being developed.being developed.• Some common representations:Some common representations:
Scalar or parametricScalar or parametric Hierarchical representationsHierarchical representations StereotypesStereotypes
Challenges of user Challenges of user representationrepresentation
Noisy dataNoisy data User changeUser change Dialog reliabilityDialog reliability Current research targeted in Current research targeted in
developing new approachesdeveloping new approaches– E.g.) UMT, BGP-MS etc. E.g.) UMT, BGP-MS etc.
Mars Medical AssistantMars Medical Assistant MMAMMA
– An Adaptive Hypermedia SystemAn Adaptive Hypermedia System– Plays the role of an Assistant in delivery of Plays the role of an Assistant in delivery of
medical informationmedical information GoalGoal
– Facilitate the medical task by providing the Facilitate the medical task by providing the medic access to large amount of medical medic access to large amount of medical informationinformation
Mars Medical AssistantMars Medical Assistant
How is information provided?How is information provided?– Medical information is divided and Medical information is divided and
categorized intocategorized into Semantic contentSemantic content Cognitive characteristics of media typeCognitive characteristics of media type
– Information Components are created based Information Components are created based on the semantic and media typeon the semantic and media type
– Information is provided to the medic through Information is provided to the medic through the appropriate Information Components.the appropriate Information Components.
Mars Medical AssistantMars Medical Assistant
Adaptation in MMA:Adaptation in MMA:– What to show?What to show?
TopicTopic Level of detail Level of detail Point of viewPoint of view
– How to show it?How to show it? Selection of media typeSelection of media type Sorting of IC’sSorting of IC’s Visibility of IC’sVisibility of IC’s
Mars Medical AssistantMars Medical Assistant Conflict Resolution in MMAConflict Resolution in MMA
Content SuggestionsPresentation
suggestions
Information
User Model
Task Model
Situation Model
Browser
Presentation Service
ContentService
Conflict resolutio
n
Negotiation and Conflict resolution
Requests
Conflict resolution
User Modeling in MMAUser Modeling in MMA
MMA used byMMA used by– different users in different situations different users in different situations
to accomplish different tasks.to accomplish different tasks.– supports diverse users with varying supports diverse users with varying
roles, expertise and level of roles, expertise and level of proficiencyproficiency
considering the relevant characteristics considering the relevant characteristics of the user allows for profitable of the user allows for profitable adaptation of the system.adaptation of the system.
User Modeling in MMAUser Modeling in MMA The User Model includes information The User Model includes information
about an individual’s knowledge about an individual’s knowledge about eachabout each– Medical topicMedical topic– Medical profileMedical profile– PreferencesPreferences
User modeling in MMAUser modeling in MMA
The User Model in MMA consists of The User Model in MMA consists of 3 parts:3 parts:– Medical History ModelMedical History Model– Medical Expertise ModelMedical Expertise Model– Preference ModelPreference Model
User Modeling in MMAUser Modeling in MMA
Medical History ModelMedical History Model– Provides the MMA information related Provides the MMA information related
to the medical history of the user.to the medical history of the user.– Composed of 2 parts:Composed of 2 parts:
Medical ProfileMedical Profile Medical historyMedical history
– API provided to retrieve information API provided to retrieve information from the model based on different from the model based on different parameters.parameters.
User Modeling in MMAUser Modeling in MMA
Medical Expertise ModelMedical Expertise Model– Contains informationContains information
about an user’s expertise in each medical skillabout an user’s expertise in each medical skill training required or nottraining required or not Number of times skill usedNumber of times skill used
– Helps the MMA in adapting the level of Helps the MMA in adapting the level of detail in the information provided to the detail in the information provided to the medic.medic.
– API provided to retrieve information from API provided to retrieve information from the model based on different parameters.the model based on different parameters.
User Modeling in MMAUser Modeling in MMA
Preference ModelPreference Model– Contains information about the preferred Contains information about the preferred
media type and semantic typemedia type and semantic type– The model contains an ordering of the The model contains an ordering of the
preferences for each task in each preferences for each task in each situation for each medical topicsituation for each medical topic
– Helps the MMA in adapting the order and Helps the MMA in adapting the order and visibility of the Information Components.visibility of the Information Components.
User Modeling in MMAUser Modeling in MMA
Adaptation based on Preference ModelAdaptation based on Preference Model– based on the time spent by the user in each based on the time spent by the user in each
media type.media type.– higher Preference given to the media type higher Preference given to the media type
where the user spends the most time.where the user spends the most time. Assumption made by the inference Assumption made by the inference
mechanism :mechanism :– if a user does not think a media type, if a user does not think a media type,
he/she selected to be suitable, he/she would he/she selected to be suitable, he/she would switch to another media type.switch to another media type.
User Modeling in MMAUser Modeling in MMA
Will the assumptions made by the Will the assumptions made by the inference mechanism cause harm ?inference mechanism cause harm ?– Probably not !!!Probably not !!!– Why ? Because the preference order has Why ? Because the preference order has
just been suggested by the systemjust been suggested by the system– The User still retains the right, to override The User still retains the right, to override
the system’s suggested preference order.the system’s suggested preference order.
User Modeling in MMAUser Modeling in MMA
The User Modeling PrototypeThe User Modeling Prototype– a fine-grained model has been a fine-grained model has been
developed for each user.developed for each user.– models have been developed models have been developed
independent from the MMA independent from the MMA application.application.
– an API is provided to store and an API is provided to store and retrieve information.retrieve information.
User Modeling in MMAUser Modeling in MMA
The User Modeling PrototypeThe User Modeling Prototype– developed as a Java application.developed as a Java application.– Uses text files for storing information Uses text files for storing information
about the users in a structured way.about the users in a structured way.
User Modeling in MMAUser Modeling in MMA
Conclusions:Conclusions:
– The User Model developed for the The User Model developed for the MMA emphasizes the importance of MMA emphasizes the importance of User Modeling in the development of User Modeling in the development of Adaptive Interface System.Adaptive Interface System.