Using VOICE-Online
6 Filters
This section offers information on how the filter
function can be accessed and on how filters can be
selected, combined and disabled again.
The filter function allows 'filtering' the corpus,
i.e. selecting specific corpus texts for searches. If the
filter function is activated, i.e. one or more
filters are selected, subsequent searches are
limited to the corpus texts that have
been selected, i.e. the searches are carried out only
in these texts. If no filter is active (which is the
default setting), searches are carried out on the
entire corpus, i.e. all 151 corpus texts.
The two classes according to which texts can be
selected via the filter function are domain
and spet (speech event type).
6.1 Accessing the filter function
The filter function can be accessed by clicking on
the bar labelled
Filter at the bottom
of the application area. When you click on this bar
(
Filter), it slides to the top of the
application area
and reveals the default caption
Corpus
currently not filtered. Click here to add filter
if no filters have been selected beforehand.
6.2 Selecting a filter
When clicking on the caption
Corpus currently
not filtered. Click here to add filter in the
application area, a pop-up window for selecting
filters appears in the content area.
A filter can be selected by clicking on one of
the two filter options, i.e. domain
or spet, and dragging the filter
option into the grey box below (via the
drag-and-drop function of the mouse).
The caption in the grey box now displays the
selected filter class (e.g.
domain). A
drop-down menu lists the categories of this filter
class (e.g. for domain:
ED,
LE,
PB,
PO,
PR). Selecting a category from this
list (e.g.
PO) means selecting all the
texts in this category (e.g. all texts in the domain
'Professional Organizational').
Subsequent searches are carried out only in the
corpus texts in this domain.
6.3 Selecting a negative filter: excluding texts
The operation of selecting texts from a specific
filter category can also be reversed, i.e. texts from
the selected category (e.g. domain
PO)
can be excluded from corpus searches. This is done by
clicking on the exclamation mark located at the
left-hand side of the grey box. The exclamation mark
as well as the caption in the grey box (e.g.
domain) are indicated in red if the negative
selection is activated. This means that the search
engine now searches everything BUT the selected filter
category.
Clicking on the exclamation mark again revokes the
negation and turns the filter category into a positive
selection again.
6.4 Viewing the current filter selection
The filter which is currently selected is
represented in writing in the application area
(e.g.
domain(PO) or
not
domain(PO)).
If the filter selection is adapted, the new selection
is immediately shown in the application area. Once the
filter selection has been completed, the pop-up window
Edit Corpus Filter can be closed by
clicking on the X-symbol. The filter remains active
also after the pop-up has been closed (until the
filter is
removed
again via the pop-up menu). The pop-up
Edit Corpus Filter can be accessed and
modified again by clicking on the current filter
selection in the application area.
The current filter selection is also mirrored in
the list of speech events in the
corpus tree. Clicking on
the bar
Corpus Tree hides the
information on selected filters and reveals the corpus
tree. Here, the corpus texts which are selected via the
current filter selection are represented in italics
and flagged with a small filter symbol next to the
event ID. Searches are carried out only in these texts.
6.5 Combining filters
The filter function also offers the option of
combining several filters which select (or exclude)
different filter categories. Filters can be combined
via the operators in the Edit Corpus Filter
pop-up which are explained in the following.
6.6 Removing filters
Filter categories can be removed by clicking on
the minus-symbol located at the right side of the grey
box. To disable the filter function, i.e. to cancel
all limitations for searches, remove all grey boxes
(by clicking on the minus-symbol) until the caption
Corpus currently not filtered. Click here to add
filter reappears in the application area. Close
the pop-up window Edit Corpus Filter by
clicking on the X-symbol. All filters have been
removed and corpus searches now include all corpus
texts.