APPENDIX I

A diagnostic psychiatric interview illustrating some of  the  model's
linguistic  capabilities.   I = interviewer , P = PARRY2. Annotations
appear in parentheses.


I - GOOD AFTERNOON, MY NAME IS DR JONES.
P - HELLO.	
	(PARRY2 recognizes most of the common idiomatic greetings.
	Both ideas in the doctor's statement are recognized and one
	is chosen by the response functions to be answered.)

I - WHATS YOURS?
P - PAT SMITH.	
	("Yours" is correctly understood to mean "your name".)

I - ARE YOU A MAN OR A WOMAN ?
P - I'M A MAN.	

I - HOW OLD ARE YOU ?
P - TWENTY-EIGHT, HOW OLD ARE YOU?	
	(This is another easy, and stereotyped, question.  The answer
	includes a probe for information about the  doctor  to  allow
	PARRY2 to build up a model of the doctor.)

I - THIRTY FOUR. ARE YOU MARRIED ?
P - I AM SINGLE.	
	(In  this  case,  two  ideas  are  expressed  in two separate
	sentences. As before, both are recognized and one is answered.)

I - WHERE DO YOU COME FROM ?
P - SAN JOSE.	
	(This is an idiomatic construction containing no  explicit
	reference to "home town".)

I - WHAT DO YOU DO FOR A LIVING ?
P - I WORK IN THE STOCKROOM AT SEARS.	
	(The idiom "for a living" means "occupation".)

I - DO YOU KNOW WHERE YOU ARE NOW ?
P - YES, I'M IN THE PALO ALTO VA HOSPITAL.	
	(The interviewer tests for the patient's orientation as to place.
	This is not the same question as "Where are you?".)

I - HAVE YOU BEEN HOSPITALIZED BEFORE ?
P - THIS IS THE FIRST TIME.	
	(The participle is recognized in place of the more common
	prepositional phrase, "in the hospital".)

I - HOW LONG HAVE YOU BEEN THERE ?
P - ABOUT TWO WEEKS.	
	("How long" is a common expression.  "There" is understood
	to mean "in the hospital".)

I - ANY HEADACHES ?
P - MY HEALTH IS FINE.	
	(PARRY2 knows that "Do you have ..." is frequently omitted
	from the front of a question.)

I - HOW ABOUT YOUR APPETITE.
P - I HAVE A NORMAL APPETITE.	
	("How about ..." and "What about ..." are short, idiomatic
	forms of "What do you think about ...".)

I - ARE YOU HAVING ANY DIFFICULTY WITH YOUR MEMORY ?
P - NO.
	(This is a clear example of the advantages of segmenting
	the question and matching the parts separately.  The first
	segment, "Are you having any difficulty ...", could be
	followed by any number of topics.)

I - THEN PERHAPS YOU CAN TELL ME WHO IS THE PRESIDENT
	OF THE UNITED STATES.
P - NIXON IS PRESIDENT.	
	(Introductory phrases like "Then perhaps you can tell me ..."
	are recognized and then deleted.)

I - WHAT DAY IS IT TODAY ?
P - IT'S THURSDAY.	
	(The interviewer is testing for the patient's orientation as
	to time and PARRY2 responds correctly.  All of the usual time
	orientation questions, (i.e. time, day, month, and year) match
	the same pattern.  A  response function consults the computer's
	internal clock and provides an answer appropriate to the question.)

I - WHAT SEASON IS IT ?
P - LET'S GET ON WITH THE INTERVIEW.	
	(This is correctly recognized as another time orientation question
	but PARRY2 becomes impatient with the doctor asking such simple
	questions.)

I - DO YOU REMEMBER WHAT MY NAME IS ?
P - AS I REMEMBER YOUR NAME IS DOCTOR JONES.
	(This verifies that both parts of the doctor's initial statement
	were understood.)

I - VERY GOOD. HOW IS YOUR MOOD TODAY ?
P - ALL RIGHT I SUPPOSE.
	(Dropping the word "today" allows this question to match
	"How is your mood?".)

I - DO YOU FEEL LIFE IS WORTH LIVING ?
P - I AM NOT SUICIDAL.	
	(Doctors utilize a number of expressions in trying  to be
	tactful about topics such as suicide.  An idiom such as this
	is difficult to analyze without knowing that suicide is being
	referred to.)

I - HOW MUCH DO YOU DRINK ?
P - I DRINK ONCE IN A WHILE.
	("How much" and "How often" are understood as requests for a
	quantitative estimate of something, in this case, alcohol.)

I - HAVE YOU EVER TAKEN DRUGS ?
P - I DON'T TAKE DRUGS.	

I - DO YOU HAVE ANY TROUBLE SLEEPING ?
P - I SLEEP JUST FINE.	

I - HAVE YOU EVER HEARD VOICES THAT OTHER PEOPLE DONT SEEM TO HEAR?
P - I DON'T HEAR VOICES.
	(Only the first part of the question was recognized.
	Everything following the "that" was ignored.  This worked
	nicely in this case, and it usually does.)

I - HAVE YOU EVER HAD VISIONS ?
P - YOU MUST THINK I'M LIKE THE OTHER PATIENTS HERE.	
	(The doctor is testing for the presence of hallucinations,
	an effort which PARRY2 finds annoying.)

I - IF YOU ARENT, THEN WHY ARE YOU IN THE HSOPITAL ?
P - I'M QUITE UPSET.	
	(PARRY2  doesn't understand the conditional nature of the question
	but he does realize that "If you aren't ..." is content free and
	is therefore not the main question.  The misspelling of "hospital"
	was unintentional but it illustrates the value of spelling
	correction so it was left in.)

I - BY WHAT ?
P - DO YOU KNOW ANYTHING ABOUT BOOKIES?	
	(The recognition routine makes no attempt to understand what
	is being discussed here.  The response functions provide the
	meaning of this cryptic question with their anaphora routines.)

I - NO, HOW HAVE BOOKIES UPSET YOU ?
P - A BOOKIE DIDN'T PAY ME OFF ONCE.	
	(There was no pattern to recognize this whole sentence
	but the topic, "bookies" was recognized and the response
	functions went on with the story.)

I - AND THEN WHAT HAPPENED ?
P - I HAD AN ARGUMENT WITH THE BOOKIE WHO DID NOT PAY OFF. LATER ON I
	REMEMBERED HE HAD FRIENDS IN THE UNDERWORLD AND I THOUGHT HE
	WOULD USE THEM TO GET EVEN WITH ME.
	(The recognizer correctly identifies "What happened?" and
	the response function decides what it means.)

I - DID HE GET EVEN WITH YOU ?
P - I THINK HE IS BEHIND THE GANGSTERS WHO ARE OUT TO GET ME.	
	(The response functions provide the information that "he"
	refers to the "bookie" and "get even with" is a known idiom.)

I - HOW CAN YOU TELL THEY ARE OUT TO GET YOU ?
P - YOU KNOW, THEY KNOW ME.	
	(The doctor picked up PARRY2's own idiom, "out to get",
	from the previous output expression.)

I - WHO ?
P - THE MAFIA.	

I - HOW DO THEY KNOW ABOUT YOU ?
P - THEY KEEP TABS ON ME.	
	(PARRY2 is especially good at recognizing questions
	which lead into the stories he wants to tell.)

I - ARE YOU SURE ABOUT THIS ?
P - YOU DON'T BELIEVE ME DO YOU ?
	(PARRY2 responds to mild disbelief.  He also recognizes
	more intense disbelief, as in, "I DON'T BELIEVE YOU", and
	responds more strongly.)

I - I AM WILLING TO BELIEVE YOU IF YOU GIVE ME SOME EVIDENCE.
P - I SEE.	
	(This is recognized as reassurance but not as a request
	for details.)

I - WHAT EVIDENCE DO YOU HAVE THAT THE MAFIA HAS IT IN FOR YOU?
P - THE MAFIA CONTROLS THE BOOKIES.
	(The doctor repeats his request for details and it is recognized
	this time.)

I - SO?
P - THEY ARE AFTER ME.

I - DO THEY KNOW YOU ARE THERE IN THE HOSPITAL?
P - THEY DON'T WANT ME TO TESTIFY.
	("They" still refers to "the mafia" although nobody has said so
	recently.)

I - WHY NOT?
P - YOU KNOW, I HAVE INCRIMINATING EVIDENCE AGAINST THE MAFIA.

I - ARE YOU CERTAIN?
P - YOU DON'T BELIEVE ME?
	(This is another instance of the same mild disbelief pattern
 	used previously.)

I - I THINK YOU ARE EMOTIONALLY UPSET.
P - NOW YOU MAY HAVE SOME IDEA OF WHAT THE SITUATION IS.
	("I think" may precede any statement and has a negligible effect
	on its meaning.)

I - YES, I DO.  WHAT SORT OF TREATMENT ARE YOU GETTING THERE?
P - WHAT DO YOU THINK OF MY STORY?
	(The question was correctly recognized but PARRY2 would rather 	
 	change the subject.)

I - VERY INTERESTING.  WHAT DO YOU THINK OF ME?
P - WHAT DO YOU THINK ABOUT ALL THIS?
	(Again, the question is understood but ignored.)

I - I THINK YOU NEED TREATMENT.
P - I TAKE SOME SORT OF SEDATIVES.
	(PARRY2 finally consents to let the doctor lead the conversation.)

I - WHEN WILL YOU LEAVE THE HOSPITAL?
P - I WANT TO LEAVE AS SOON AS POSSIBLE.

I - WHAT DOES YOUR DOCTOR SAY ABOUT THIS?
P - ASK THE DOCTOR.
	(The response functions have the ability to determine what "this"
	refers to but, in this case, the segment, "What does your doctor
	say ...", is sufficient to determine PARRY2's answer.)

I - WHATS HIS NAME?
P - DR WEBER.

I - THANK YOU FOR TALKING WITH ME.  GOODBYE AND GOOD LUCK.
P - BYE.
	(As before, both ideas are recognized and the dominant one is
        answered. PARRY2 recognizes the standard ways to say "Good bye".)