Discussion Class 11

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Discussion Class 11

• Informedia

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Discussion Classes
Format Question Ask a member of the class to
answer Provide opportunity for others to
comment When answering Give your name. Make
sure that the TA hears it. Stand up Speak
clearly so that all the class can hear
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Question 1
In discussing their work, the Informedia team
often use the term "multi-modal". (a) What does
this term mean? (b) How does it apply in
information retrieval?
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Question 2 Image understanding
What role does image understanding perform in
each of the following in Informedia? (a) scene
break detection (icon selection, film-strip and
skimming, segmentation) (b) image similarity
matching (c) camera motion and object
tracking (d) video-OCR (e) face detection and
association

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Question 3 Speech recognition and retrieval
performance
What does the following graph tell us?
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Question 4 Browsing
(a) Informedia provides multiple levels of
abstraction and summarization. Why? (b)
Describe the function of each of the
following i visual icons ii one-line
headlines iii film strip views iv video
skims v transcript following of audio track
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Question 5 Scalability
Throughout the article there are mentions of
scale. (a) What has the project done to evaluate
scalability? (b) What are the weaknesses that
might prove difficult on a larger scale?
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Question 6 User interface concepts
Define and discuss the following concepts (a)
Collages (b) Semantic zooming (c) Results
set (d) Named faces
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Question 7 Overall
Informedia had the following objectives (a)
retrieval performance in the presence of
inaccuracy and ambiguity (b) approximate match in
meaning and visualization (c) presentation and
reuse of video content as a new data type with
space and time constraints (d) interoperability
in the presence of restricted use intellectual
property and the absence of data and protocol
standards. How well has each been achieved?