Unit 8 Muddiet Point and Reading Notes

Muddist Point：

I am fine with this class.

Reading notes:

The goals to achieve the effective human-computer interface.

The principle to achieve the these goals

The importance of the visualization: icons and color highlighting brushing and linking panning and zooming, focus-plus –context, magic lenses.

The evaluation of the interactive system.

The standard process to describe the interaction cycle.

Search/retrieval analysis/synthesis

Four main types of starting points: lists, overview, examples, automated source selection.

List: Typical online systems such as LEXIS-NEXIS requires users to begin any inquiry with a scan through a long list of source names and guess which ones will be of interest. Usually little information beyond the name of the collection is provided online for these sources. However, when users want to search outside their domains of expertise, a list of familiar sources is not sufficient.

Overview: An overview can show the topic domains represented within the collections, to help users select or eliminate sources from consideration. There are three types of overview: display and navigation of large topical category hierarchies associated with the document of a collection. The second one is automatically derived overview. The third type is that created by applying a citation of co-citation analysis on connection or links between different entities within a collection.

Retrieval by reformulation: the early version is general framework for a query is shown to the user who then modified it to construct a partially complete description of what they want.

Dialog: It attempts to mimic the interaction provided by a human search intermediary.

Common language

Form fillin

Menu selection

Direct manipulation

Natural language

There are many problems on Boolean queries:

1.the “and” “or” problem, serving a massive audience possessing little query-specification experience can solve the problem.

2. They do not rank the retrieved documents according to their degree of match to the query.

3.their strict interpretation tends to yield result sets that are either too large or are empty. A common strategy for dealing with this problem, employed in systems with command-line-based interfaces like DIALOG’s is to create a series of short queries, view the number of documents returned for each queries.

Content:T his includes showing the relationship of the document set to query terms, collection, overviews, descriptive metadata, hyperlink structure ,document structure, and to other documents within the set