FI MU, autumn 2011, syntactic formalisms for natural language parsing
Parsing with HPSG Exercises
Task 1: due on October 18th
2011
Deadline: November 15th
2011, 11:50 a.m
A. Unification
1. Calculate the unifications. If the unification is impossible, write fail to unify.
2. Calculate the unifications and compare a and b.
a.
A [B a]
& [C [D [E b]]] =
C [D [B a]]
b.
A 1[B a]
& [C [D [E b]]] =
C [D 1]
FI MU, autumn 2011, syntactic formalisms for natural language parsing
B. ID Schemata
1. Using the head-subject schema and the head-complement schema,
give the HPSG analysis of the given English sentence:
John reads a book.
Main points: a. give the lexical entries for the verb and the nouns;
b. unify these entries by applying the head-subject/complement schema;
c. comment the interacted principles such as HFP, ValP.