development of a tv reception navigation system personalized with viewing habits tadashi isobe,...
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Development of a TV Reception Navigation
System Personalized with Viewing Habits
Tadashi Isobe, Masao Fujiwara, Hiroyuki Kaneta,
Toshiya Morita, and Noriyoshi Uratani
bearhsu2005/11/17
IEEE Transactions on Consumer Electronics, Vol. 51, No. 2, MAY 2005
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Index
Introduction TV Watching Situation Today TV Navigation System Evaluation Tests Results & Assessment Conclusion
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Introduction
motivation Investigate viewers’ selection behavior Find out a good selection assisting
method Propose a navigation system for
viewers according to their habits & occasional feelings
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4 Main Facilities
Channel presetting Program Recommendation Program sorting Program retrieval
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Index
Introduction TV Watching Situation Today TV Navigation System Evaluation Tests Results & Assessment Conclusion
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Some Statistics
Since 1974, people watch TV 3.5hrs/day on avg. Recently increase to 4:05/day
Purposely chosen Diversion viewing TV as an environmental furniture
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For a viewing individual
Favorite programs So separate among individuals Hardly explained by sex, age,
occupation… TV navigation system
Detects viewers’ taste from history Handles not only concentrated viewing Casual & diverted ways but also
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Index
Introduction TV Watching Situation Today TV Navigation System Evaluation Tests Results & Assessment Conclusion
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Program selection methods
Concentratedviewing
Viewing while doingSomething else
Diversion viewing
Doing somethingWith TV on
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System ConfigurationGraphic Display
Controller
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Channel Presetting “Usual one please”
CH(service id)
CPS Table(Channel preset Table)
D, t, u
Service id
D:holiday/weekdays
t:time
u:user id
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Program Recommendation “I’ll leave it to you” m= r
ie
F= r1 r2 r3 … r256i1 i2 i3 … i256e1 e2 e3 … e256
g=(g1 g2 g3 … g256) Genre specifying vector
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Program Recommendation (cont)’
RS(t)=mT hu(t) Recommendation Score hu(t)= Ru(t)
Iu(t)Eu(t)
m=Fg RS(t)=mT hu(t)PresentPrograms, g
Top 7 programsat RS
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Program sorting Viewers divided into 8 groups
“Laughter-/stimulation-seeker” “Diversion seeking zapper” “Romance-/fiction-oriented” “Trendconscious TV devotee” “Easy going interest-seeker” “Barely interested” “Wholesome and practical type” “News-/culture-oriented”.
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Program sorting
IS=Gg Interest Score
G=(G1u G2u G3u … G256u)
IS=Gg
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Program retrieval Data in SI words List up keywords
in alphabetical order Viewer chooses 1 keyword from list Enter retrieval algorithm list appropriate programs
most currently broadcasted first Viewer can also use a keyword
registered in PF
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Program retrieval (cont’)
Presentprograms
Segmentinto words
Proposedkeywords
Programretrieval
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Emphasis on personalization
Recommendation A low RS program chosenhu(t) updated
Program sorting IGF table updated Once the IGF table is changed, it’s more
personalized to viewer Retrieval
Update both hu(t) & IGF table
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Index
Introduction TV Watching Situation Today TV Navigation System Evaluation Tests Results & Assessment Conclusion
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Program data & Evaluators
Tokyo, 13 days in 2004 1 Navigation system/ 1 Evaluator 38 evaluators in total
Older, avg.64 Younger, avg.29
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Some discoveries
Mainly 2 kinds of viewing types News-/culture-oriented Diversion-seeking zapper
In the morning, Information’s needed
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Test procedures/ result
General evaluation Program recommendation Program sorting Evaluators’ impression
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General evaluation
morning afternoon evening
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Some discoveries
“Channel presetting” is more needed in the morning
“Retrieve” Afternoon / evening
“Recommendation” & “Sorting” On a medium necessity
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recommendation
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Some discoveries
Morning P better than A
Afternoon & evening Older
P better than A Younger
No significant difference
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Program sorting
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Some discoveries
Personalizing effect Still make some effect But less than “Recommendation”
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Evaluators’ impression
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Efficient vs. Rich/Enjoyable
R: Recommend A: all 4 S: Sorting
Y: younger O: older
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Index
Introduction TV Watching Situation Today TV Navigation System Evaluation Tests Results & Assessment Conclusion
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Results & Assessment
None of the methods was unnecessary “Channel presetting” => morning “Program retrieval” => evening “informative” is needed more
In the morning Older => efficient Younger => efficient & Rich/Enjoyable
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Index
Introduction TV Watching Situation Today TV Navigation System Evaluation Tests Results & Assessment Conclusion
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conclusion Developed a TV reception navigation
system easy to use for all generations of viewers
Cope with diversion viewing NOWADAYS Incorporates recommending facility None of the 4 facilities is unimportant
Further more… Optimization of these algorithms would be a
more important task
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The End~