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Sequence Package Analysis
A New Data Mining Tool to
Speed Up Wiretap Analysis
Amy Neustein, Ph.D.
Linguistic Technology Systems
[email protected]
Sequence Package Analysis: A New Data Mining
Tool to Speed Up Wiretap Analysis
Question: Why do we need a new tool?
Answer:
1) In the real world speakers do not
always use “key” words that can
be spotted in a dialog.
2) In crime or terror related dialog,
speakers will deliberately avoid the
use of key words that can identify
names, places, dates, etc
Sequence Package Analysis
How Does SPA Work?
1) Add rather than Replace
SPA adds a layer of intelligence to
standard dialog systems.
2) Mines audio data
SPA goes beyond a conventional
search for words and word strings.
3) Examines a series of related speaking
turns that are discretely packaged as a
sequence.
WHAT DOES SPA DO?
1) SPA permits the discovery of “key”
words (e.g., the name of a location
where a crucial meeting among
terrorists will take place) that are not
in the preset lexicon.
2) SPA permits rapid and efficient data
mining of large volumes of audio text
by spotting sequence packages in
the dialog.
ADVANTAGES OF SPA
Can be applied to different languages
works by identifying interactional features
of dialog (conversational sequence patterns)
rather a preset glossary of words.
Can perform data mining in real time
permits a human analyst to be brought in
immediately when high alarm content is
being produced in the dialog.
Dialog Example
Speaker “A”: Come to the intersection
near Juniors? (the question mark
shows an upward intonation)
0.2 - 0.5 second pause (speaker then
pauses briefly)
Speaker “B”: 1.2 second pause
Speaker “A”: You know the thoroughfare
with the big traffic light?
Speaker “B”: Juniors, yeah.
THE SEQUENCE PACKAGE
Speaker “A”: Come to the intersection near
Juniors? 0.2-0.5
Speaker “B”: 1.2 seconds of silence
• A noun referent (“Juniors”) with an upward
intonation
• A brief pause, giving the listener the chance to
show recognition or ask for clarification.
• Silence by the listener which indicates lack of
understanding or confusion.
Speaker “A”: You know the thoroughfare with
the big traffic light?
Speaker “B”: Juniors, yeah.
• Clarification of the noun referent
(“You know the thoroughfare with...”)
• Repeat of noun referent (“Juniors”) the source of the recognition trouble
- followed by a recognitional marker
(“Yeah”).
Finding the Sequence Package in the
Dialog Example
Look for a concatenation of these
utterance components:
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noun referent with upward intonation
brief pause
silence
clarification of noun referent
repeat of noun referent that was initial
source of the recognition trouble
• recognitional marker
Private Industry Applications for SPA
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Technical Support Centers
Help desks
Call Centers
Broadcast Media
Depositions
Courtroom Testimony
Corporate Communications
Conference Managers
Sequence Package Analysis
A New Data Mining Tool to
Speed Up Wiretap Analysis
Amy Neustein, Ph.D.
Linguistic Technology Systems
[email protected]