Index Terms: Object-oriented databases, indexing, nested object hierarchy, index interaction.
Citations begin in mid-1960s and index terms are from the Chicano thesarus and are built into the system.
Although Web pages may have "content-tag" index terms, not all do, nor are there yet accepted standards for their use.
In the Boolean or vector space models of IR, matching is done in a formally defined but semantically imprecise calculus of index terms.
As main index terms, including analogs and derivatives, we used the names of specific dermatoses of pregnancy.
In such instances, the index terms related to the topic "Energy" are not added to the list of index terms.
The topics together with carefully selected index terms are presented in Table 2.
We searched the databases using a combination of MeSH (Medical subject Headings) and relevant index terms.
The CAplus publication records contain index terms (ITs, keywords carefully selected and assigned by the database producer CAS).
To identify prospective studies, we used the following index terms: "cohort studies", "risk", "group", or "incidence".
These searches included a mixture of free text and index terms to maximize the retrieval of potentially relevant articles.
