Re: JESS: [EXTERNAL] Creating an eLearning system following TekMart example
Thanks,
runQueryStar() needs at least 2 args - query name and a variable of
valuevector type.
I don't want to pass any variable as shown in TekMark example in Jess in
Action
Iterator result = engine.runQuery(all-products, new ValueVector());
When I pass the same blank valuevector(), it doesn't work.
QueryResult result =
engine.runQueryStar(list-courses, new ValueVector());
My query is as follows:
(defquery list-courses
(subject (sub-name ?subname))
(module (parent-subject ?subname) (mod-name ?modname))
(topic (parent-module ?modname) (topic-name ?topicname))
(concept (parent-topic ?topicname) (concept-name ?conceptname))
(learning-object (parent-concept ?conceptname) (lo-name ?LOname))
)
On Wed, Jun 26, 2013 at 7:22 PM, Friedman-Hill, Ernest
ejfr...@sandia.govwrote:
Don’t try to get the Token – hiding that sort of ugliness is the whole
reason run-query* exists. Use a pattern binding instead:
** **
(defquery my-query
(declare (variables ?n))
?f - (room (number ?n)))
** **
(bind ?r (run-query* my-query 100))
(while (?r next)
(bind ?fact (?r getObject f))
;; … now do something with your fact
** **
*From:* owner-jess-us...@sandia.gov [mailto:owner-jess-us...@sandia.gov] *On
Behalf Of *Rejaul Barbhuiya
*Sent:* Wednesday, June 26, 2013 6:22 AM
*To:* jess-users
*Subject:* Re: JESS: [EXTERNAL] Creating an eLearning system following
TekMart example
** **
Thanks Ernest.
** **
In my program, I was using runQuery(arg0, arg1) and storing the result in
a Iterator as shown below. Then I am storing the result in token and from
token to fact.
** **
Iterator sno = engine.runQuery(session-number,new
ValueVector().add(sidValue));
if (sno.hasNext()) {
Token token = (Token) sno.next();
Fact fact = token.fact(1);
** **
Now, I want to use runQueryStar(). But I don't know how to read the Query
Result.
** **
QueryResult sno = engine.runQueryStar(session-number,new
ValueVector().add(sidValue));
if (sno.next()) {
Token token = (Token) sno.**; *what function should I use here?*
Fact fact = token.fact(1);
** **
** **
** **
On Mon, Jun 24, 2013 at 11:06 PM, Friedman-Hill, Ernest
ejfr...@sandia.gov wrote:
You can use a query to easily find your facts; see
http://www.jessrules.com/jess/docs/71/queries.html and in particular,
http://www.jessrules.com/jess/docs/71/queries.html#in_java
To unsubscribe, send the words 'unsubscribe jess-users y...@address.com'
in the BODY of a message to majord...@sandia.gov, NOT to the list
(use your own address!) List problems? Notify owner-jess-us...@sandia.gov
Re: JESS: [EXTERNAL] Creating an eLearning system following TekMart example
I have four *deftemplate*s - Subject, where each subject can have multiple
modules and each module can have multiple topics.
Now I want to create a table of contents (or a tree structure) so that all
topics belonging to same Module can be listed together, while those of
other module will be listed under that module. same will for listing of
Modules.
So my question basically is how should I write the queries and how should I
retrieve them. I have tried following:
(defquery sub-name
(subject (sub-name ?subname)))
(defquery module-name
(subject (sub-name ?subname))
(module (parent-subject ?subname) (mod-name ?modname)))
(defquery topic-name
(module (mod-name ?subname))
(topic (parent-module ?modname) (topic-name ?topicname)))
I am triggering the queries as:
QueryResult subject = engine.runQueryStar(sub-name, new ValueVector());
QueryResult module = engine.runQueryStar(module-name, new ValueVector());
QueryResult topic = engine.runQueryStar(topic-name, new ValueVector());
QueryResult concept = engine.runQueryStar(concept-name, new
ValueVector());
and want to display the tree in for example in Java as :
while(subject.next())
{
print (subject name here)
while(module.next())
{
print (Module name here)
while(topic.next())
{
print (Topic name here)
}
}
}
So kindly suggest me how to control the queries.
Many thanks again,
On Wed, Jun 26, 2013 at 7:22 PM, Friedman-Hill, Ernest
ejfr...@sandia.govwrote:
Don’t try to get the Token – hiding that sort of ugliness is the whole
reason run-query* exists. Use a pattern binding instead:
** **
(defquery my-query
(declare (variables ?n))
?f - (room (number ?n)))
** **
(bind ?r (run-query* my-query 100))
(while (?r next)
(bind ?fact (?r getObject f))
;; … now do something with your fact
** **
*From:* owner-jess-us...@sandia.gov [mailto:owner-jess-us...@sandia.gov] *On
Behalf Of *Rejaul Barbhuiya
*Sent:* Wednesday, June 26, 2013 6:22 AM
*To:* jess-users
*Subject:* Re: JESS: [EXTERNAL] Creating an eLearning system following
TekMart example
** **
Thanks Ernest.
** **
In my program, I was using runQuery(arg0, arg1) and storing the result in
a Iterator as shown below. Then I am storing the result in token and from
token to fact.
** **
Iterator sno = engine.runQuery(session-number,new
ValueVector().add(sidValue));
if (sno.hasNext()) {
Token token = (Token) sno.next();
Fact fact = token.fact(1);
** **
Now, I want to use runQueryStar(). But I don't know how to read the Query
Result.
** **
QueryResult sno = engine.runQueryStar(session-number,new
ValueVector().add(sidValue));
if (sno.next()) {
Token token = (Token) sno.**; *what function should I use here?*
Fact fact = token.fact(1);
** **
** **
** **
On Mon, Jun 24, 2013 at 11:06 PM, Friedman-Hill, Ernest
ejfr...@sandia.gov wrote:
You can use a query to easily find your facts; see
http://www.jessrules.com/jess/docs/71/queries.html and in particular,
http://www.jessrules.com/jess/docs/71/queries.html#in_java
To unsubscribe, send the words 'unsubscribe jess-users y...@address.com'
in the BODY of a message to majord...@sandia.gov, NOT to the list
(use your own address!) List problems? Notify owner-jess-us...@sandia.gov
Re: JESS: [EXTERNAL] Creating an eLearning system following TekMart example
Thanks Ernest.
In my program, I was using runQuery(arg0, arg1) and storing the result in a
Iterator as shown below. Then I am storing the result in token and from
token to fact.
Iterator sno = engine.runQuery(session-number,new
ValueVector().add(sidValue));
if (sno.hasNext()) {
Token token = (Token) sno.next();
Fact fact = token.fact(1);
Now, I want to use runQueryStar(). But I don't know how to read the Query
Result.
QueryResult sno = engine.runQueryStar(session-number,new
ValueVector().add(sidValue));
if (sno.next()) {
Token token = (Token) sno.**; *what function should I use here?*
Fact fact = token.fact(1);
On Mon, Jun 24, 2013 at 11:06 PM, Friedman-Hill, Ernest
ejfr...@sandia.govwrote:
You can use a query to easily find your facts; see
http://www.jessrules.com/jess/docs/71/queries.html and in particular,
http://www.jessrules.com/jess/docs/71/queries.html#in_java
To unsubscribe, send the words 'unsubscribe jess-users y...@address.com'
in the BODY of a message to majord...@sandia.gov, NOT to the list
(use your own address!) List problems? Notify owner-jess-us...@sandia.gov.
--
*Rejaul Karim Barbhuiya*
Senior Research Fellow
Department of Computer Science
Jamia Millia Islamia
New Delhi, India
Phone: +91-9891430568
JESS: [EXTERNAL] Creating an eLearning system following TekMart example
Kindly bear with me as I explain my query... I am developing an Intelligent Tutoring System using Jess + Servlet + Jsp. It will perform following actions (implemented as rules): 1. if student has completed a given task within specified time then give him next task. else jess rules will decide a suitable feedback message for the student (e.g., hurry up!). 2. a student while solving a multiple choice question (maintained as a question fact) can attempt more than once till answers correctly. Here number of attempts will be passes from a JSP page to a servlet page. The servlet will modify the attempt_count SLOT in jess fact and the engine will run and decide next suitable action. a question fact initially is: (deffacts question_objects (question (object-name eaxmple1.html) (type question) (lo-id 10302) (reqd-time 25) (prev-lo-id 10301) (next-lo-id 10303) (diff-level medium) (attempt-count (default 0))) (theory (object-name theory1.html) (type theory) (lo-id 103) (reqd-time 45) (prev-lo-id 102) (next-lo-id 104) (diff-level easy) (status incomplete)) ) Now, dynamically, i want to update the first fact's attempt-count slot value. But I have no clue how to get hold of that particular fact to call modify() from Java? Please let me know if I should be more detailed. Thanking you, -- *Rejaul Karim Barbhuiya* Senior Research Fellow Department of Computer Science Jamia Millia Islamia New Delhi, India Phone: +91-9891430568
JESS: [EXTERNAL] need help on Learning content management for JESS based Tutoring System
Please bear with me as I am explaining in a bit details about my problem status. I am designing an Intelligent Tutoring System using JESS and J2EE. My ITS's teaching cycle is as follows: present learning material - present one/more examples - assess learning outcome through MCQ or fill_in_gap type questions. In between there will be feedbacks to maintain learner's positive motivation level. My domain knowledge will structured hierarchically as domain_subject - module- topic- concept. each concept consists of 3 types of Learning objects (theory, example and question). The jess rules will decide the next learning object, which feedback message to display and when, etc. Below I am giving in brief some of my templates and jess rules in textual format: (deftemplate student (slot stud-id) (multislot stud-name) (slot performance-history) (multislot stud-clas) (slot session-no)) (deftemplate concept (slot parent-topic) (multislot lo-names) (multislot lo-ids) (multislot concept-name) (slot concept-id) (slot status) (slot stud-id) (multislot pre-req-concept) (slot next-concept) (slot prev-concept)) (deftemplate learning-object (slot parent-concept) (multislot lo-name) (slot lo-type) (slot lo-id) (slot reqd-time) (slot elapsed-time) (slot diff-level) (slot status) (slot attempt-count (default 0)) (slot stud-id) (slot prev-lo) (slot next-lo)) Some of the rules in textual form 1. if learner succeeds in a problem of difficulty-level 'EASY', next select a problem of difficulty-level 'MEDIUM' 2. if learner succeeds in a problem of difficulty-level 'MEDIUM', next select a problem of difficulty-level 'TOUGH' 3. if learner fails in a problem of difficulty-level 'MEDIUM', next select a problem of difficulty-level 'EASY' 4. if learner fails in a problem of difficulty-level 'TOUGH', next select a problem of difficulty-level 'MEDIUM' Now given this, I am not sure whether my approach is correct in terms of tool selection or not? Also, how should I represent the learning materials? Thanks, -- *Rejaul Karim Barbhuiya* Senior Research Fellow Department of Computer Science Jamia Millia Islamia New Delhi, India Phone: +91-9891430568
