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Figure 2. Structure of poetry multimedia resource index
Figure 3. Illustrative example of a Chinese poem
The construction of PMRI starts from the vocabulary-indexing thesaurus TYCCL. Since the resources already link to
the poems in the phase of prefetch-based resource information collection, the construction mechanism focuses on the
connection between poems and TYCCL. First, these keywords, except poem titles and authors, are matched to the
thesaurus entries (the Vocabulary level in TYCCL). Those which do not match the entries are unknown words. The
head noun heuristic, such as the one below, is used to deal with this problem.
Heuristic of head noun:
A head noun is the main noun that is modified by other elements (modifiers) in a noun phrase. In Chinese, the
head noun occurs at the end of a noun phrase (Liang & Wu, 2009).
In a noun phrase, the head noun could be the last three-character word, the last two-character word, or the last onecharacter
word. For example, the head noun of an unknown word “abcde” could be “cde,” “de,” or “e.” The longterm
priority is adopted for this heuristic; therefore, the last three-character word is assigned the highest priority.
After using this heuristic, unknown words are tagged with their senses and stored in PMRI.
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