CSCI 587 - Assignment 5 Chart Parsing

Date: Feb 20, 1997
Date Due: Feb 27, 1997

p 78 #8, Chart for "The man is laughing."

Step 1: process "The"

1             2            3             4           5
 ART1

 NP -> art . N

Step 2: process "man"

1             2            3             4           5
 ART1..........Noun1........
 ............NP1............

 ..... S -> NP . V .........
 ..... S -> NP . AUX V .....

Step 3: process "is"

1             2            3             4           5
 ART1......... Noun1 ...... AUX .........
 ............NP1............

 ..... S -> NP . V .........
 ..... S -> NP AUX . V ..................

Step 4: process "laughing"

1             2            3             4           5
 ART1......... Noun1 ...... AUX1 ........ Verb1 ......
 ............NP1............
 .................... S ..............................
 ..... S -> NP . V .........

Implement the CFG in p76-77 #5 in prolog,

s(X) :- np(X,Y), vp(Y,[]).

vp(X,Y) :- v(X,Y).
vp(X,Y) :- v(X,Z), np(Z,Y).
vp(X,Y) :- v(X,Z), pp(Z,Y).

np(X,Y) :- art(X,Z), np2(Z,Y).
np(X,Y) :- np2(Z,Y).

np2(X,Y) :- n(X,Y).
np2(X,Y) :- adj(X,Z), np2(Z,Y).
np2(X,Y) :- np3(X,Z), preps(Z,Y).

np3(X,Y) :- n(X,Y).

preps(X,Y) :- pp(X,Z), preps(Z,Y).
pp(X,Y) :- np(X,Y).

p 79 #11 a,

S -> NP VP
NP -> art  noun
NP -> noun
NP -> NP PP
PP -> prep NP
VP -> VP0 NP
VP0 -> modal VP1 baseverb | VP1
VP1 -> HaveForm VP2 pastParticiple | HaveForm VP2 inf | VP2
VP2 -> BeProg presentParticiple | VP3
VP3 -> BePassive pastParticiple | 
pastParticiple -> had | read | won
BeProg -> is | was
presentParticiple -> reading
VP -> verb
inf -> to baseverb

p 118 #1

1           2           3           4           5           6
 ___________________________________________________________
|   S1  CAT S                                               |
|       INV -                                               |
|       VFORM pres                                          |
|       AGR 3s                                              |
|       1 NP1                                               |
|       2 VP3                                               |
|___________________________________________________________|
|           |   VP3 CAT VP                                  |
|           |       VFORM pres                              |
|           |       AGR 3s                                  |
|           |       1 V1                                    |
|           |       2 VP2                                   |
|           |_______________________________________________|
|                       |   VP2 CAT VP                      |
|                       |       VFORM inf                   |
|                       |       AGR 3s                      |
|                       |       1 TO1                       |
|                       |       2 VP1                       |
|___________            |___________________________________|
|NP1 CAT NP |                       |   VP1 CAT VP          |
|    AGR 3s |                       |       VFORM base      |
|    1 Pro1 |                       |                       |
|           |                       |       1 V2            |
|           |                       |       2 ADJ1          |
|___________|_______________________|_______________________|
|PRO1       |V1 CAT V   |TO1 CAT TO |V2 CAT V   |ADJ1       |
|   CAT PRO |ROOT want  |           |ROOT be    |CAT ADJ    |
|   AGR 3s  |VFORM pres |           |VFORM base |           |
|           |AGR 3s     |           |SUBCAT {   |           |
|           |SUBCAT _np,|           |_adjp,     |           |
|           |_vp:inf,   |           |_adjp_np   |           |
|           |_np_vp:inf}|           |           |           |
|___________|___________|___________|___________|___________|
1           2           3           4           5           6