The Process
The following procedures show what the system does at each
step of the search and post-search processes.
Phase one: Pre-Search Processing
Before anything can happen, you must
start the search by answering the question posed by the
system:
The Gateway displays a question: What is your problem?
The user types in a response: Driver problem.
The Knowledge Gateway analyzes the query and the Pre-Search
process begins. This process is designed to analyze a query
before it is sent to the information source, which in this
case is assumed to be Microsoft Site Server or Lotus Notes.
The words in the query are passed through a series of filters
that refine them before being routed to the appropriate
gateway. The following procedure describes the steps the
system goes through before executing the query.
Figure 2 shows the steps the system
performs in the pre-search phase.
Phase two: Dynamic conceptual grouping
—
Applying the semantic filters
When the system executes a query, Site
Server or Lotus Notes receives it and returns a ranked set
of documents. The set of documents invokes a secondary process
that begins by extracting words and phrases that relate
to one another. This is called dynamic conceptual grouping.
Dynamic conceptual grouping represents
a significant improvement in the way documents are organized
after their return from an information source. The Knowledge
Gateway achieves this improvement by refining the search
results with a semantics process that is sensitive to the
words found in the documents.
- The system examines each document for words, phrases,
or synonyms that match the words or phrases contained
in a concept taxonomy, integrated into the system.
- The system extracts the matching words or phrases and
sorts them according to how frequently they appear, discarding
the most and the least frequently appearing words.
- The system then segregates the documents into groups,
according to the words in the documents that share a concept.
For example, documents involving Linux driver problems
match the word Linux in the taxonomy.
- The document groups assume the name of the concept they
share, which in the case of the example is Linux.
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