Do these News Videos Portray a News Event from Different Ideological Perspectives? Wei-Hao Lin and Alexander Hauptmann Language Technologies Institute School of Computer Science Carnegie Mellon University International Conference on Semantic Computing, August 6, 2008
News videos of differing views
NBC
LBC
News videos of differing views
NBC
LBC
News videos of differing views
NBC
LBC
Echo Chamber Percentage of Internet users in the United States who seek news sources that challenge their views
Echo Chamber Percentage of Internet users in the United States who seek news sources that challenge their views
20%
Too many channels, too little time
Automatic bias detection system
Automatic bias detection system Warning! Strongly American media bias!
Automatic bias detection system Warning! Strongly American media bias!
See contrasting news from Arabic media
Organize news by ideological views
Organize news by ideological views
Arafat's Death
Arabic View
Tel Aviv Bomb
American View
Chinese View
Goal
Given two news videos, determine if they portray the same news event from different ideological views
Outline
• •
Identify videos of differing ideological views Use selection bias in semantic concepts to identify videos of differing views 1. Extract key frames of news videos 2. Represent visual content as high-level semantic concepts 3. Summarize selection bias in multinomial ß 4. Measure “distance” between ß
•
Evaluation
1. Extract key frames of news videos
• • • •
Segment news videos into stories Segment news stories into camera shots Remove non-news and production shots Select key frames from shots
Two videos from same views: similar ß Two videos from differing views: different ß Two videos on different events: very different ß
v.s.
3. Summarize selection bias in multinomial
• • •
Two videos from same views: similar ß Two videos from differing views: different ß Two videos on different events: very different ß
v.s.
3. Summarize selection bias in multinomial
• • •
Two videos from same views: similar ß Two videos from differing views: different ß Two videos on different events: very different ß
v.s.
4. Measure difference between ß
•
Measure difference between two multinomial distributions of video A and video B using Kullback-Leibler divergence (“distance”)
D(p(β|A)||p(β|B)) =
!
p(β|A) p(β|A) log dβ p(β|B)
Recap proposed method Press_Conference Soldiers
Officiers Outdoor Flags
D(A||B) Soldiers Outdoor Tanks Group Explosion_Fire
1
2
3
4
Outline
• •
Identify videos of differing ideological views
•
Evaluation
•
Use selection bias in semantic concepts to identify videos of differing views
• • •
Experiment data Identify videos of differing views Different views or different production styles?
Conclusions
Experiment Data
•
• •
TRECVID’05 video archive
• • •
~160 hours of broadcast news in late 2004 Arabic, Chinese, American broadcasters individual broadcasters’ biases
10 international news events
•
e.g., Arafat’s death, Powell’s resignation
LSCOM visual concept annotations
•
449 concepts on 61901 shots
Identify videos of differing perspectives Same Event Same Perspective
A
Different Perspective
B
Different Event
Identify videos of differing perspectives Same Event
Different two Event videos from
NTDTV about Powell’s resignation
Same Perspective
A
Different Perspective
B
Identify videos of differing perspectives Same Event Same Perspective
A
Different Perspective
B
Different Event
Identify videos of differing perspectives Same Event Same Perspective
A
Different Perspective
B
Different Event
two videos about Powell’s resignation from LBC and from NBC
Identify videos of differing perspectives Same Event Same Perspective
A
Different Perspective
B
Different Event
Identify videos of differing perspectives Same Event Same Perspective Different Perspective
Different Event
A
B
1000 pairs of videos 10% for testing 10% - 90% for training
Identify videos of differing views 0.70
!
!
!
!
!
!
0.65 0.60
!
0.55
perspective random
0.50
accuracy
!
20
40
60 training data
80
!
Different perspectives or product styles? Same Event
Different Event
Same Perspective (or Production style)
A
Different Perspective (or Product style)
B
Different perspectives or product styles? two videos from NTDTV, one Same about Powell’s Event resignation and one about Arafat’s death
Different Event
Same Perspective (or Production style)
A
Different Perspective (or Product style)
B
Different perspectives or product styles? Same Event
Different Event
Same Perspective (or Production style)
A
Different Perspective (or Product style)
B
Different perspectives or product styles? Same Event
one video from Same Perspective (or NTDTV about Production Powell’s style) resignation, one video from LBC about Arafat’s death Different
Perspective (or Product style)
Different Event
A
B
0.60
0.65
style random
0.55 0.50
accuracy
0.70
0.75
Not simply production styles
!
!
20
!
!
!
40
!
60 training data
!
!
80
!
Conclusions
• • • •
Automatically identifying news videos conveying differing viewpoints with high accuracy Key Ideas: Represent visual content as semantic concepts Encode selection bias in multinomial ß Identify differing views using distance b/w ß Selection bias widely observed in written and spoken documents, folksonomy in web videos Joint Topic and Perspective Model for capturing selection bias and classifying individual views
Do these News Videos Portray a News Event from ...
International Conference on Semantic Computing, August 6, 2008 ... Percentage of Internet users in the United States who seek news sources ... Two videos from differing views: different Ã. ⢠Two videos on different events: very different Ã. v.s. ...
threat to a democratic society [15]. We aim to develop a computer system ..... idiosyncratic production styles (e.g., adding station logo in the corner, unique studio ...
Oct 24, 2009 - We take the definition of ideology as. âa set of ... Composition rules define what ... and display them in text clouds in Figure 3 (American news.
Oct 24, 2009 - School of Computer Science ..... ideological weights simultaneously from data. ..... politics have too little video data in the collection) and in-.
Oct 24, 2009 - interviews with the general public and the funeral. We consider a .... and display them in text clouds in Figure 3 (American news broadcasters) and ... to reflect a broadcaster's ideological perspective (American view vs. Arabic view)
Sep 10, 2009 - over the last two decades, and draws upon data presented in the annual Social Security .... http://ssa.gov/OACT/solvency/provisions/index.html.
As Scarborough Education Foundation enters its 5th year, we look to celebrate and build on the success stories of past grant recipients. SEF's focus continues to be the recognition and awarding of grants to those educators who have creative and innov
Department of Computer Science. University of Massachusetts. Amherst, MA ...... [10] Yiming Yang, Jaime Carbonell, Ralf Brown, Thomas Pierce,. Brian T.
Jun 23, 2016 - "That's the good thing." Larimer County ..... The dedication ceremony included the posting of the colors, the singing and playing of the National ...
Jun 23, 2016 - Multiple boaters called 911 to report the blaze at the popular reservoir west of Fort Collins, with the first call .... right now, sh are not in their usual locations. ... Citizen Information Center, Larimer County Courthouse Offices,
Oct 10, 2017 - Training certificate. If a copy of their Youth Protection. Training certificate is not included, their application cannot be accepted. There will no longer be a 30 day .... online at http://www.gtcbsa.org/council-event-information. If
Oct 10, 2017 - The college is modeled after college courses and degrees. A commissioner has the opportunity to earn a Bachelor, Master and Doctorate degree by attending ..... [email protected]. Commissioner. Ed Martin. 330-350-1290 [email protected]
Jun 23, 2016 - POSTED: 06/16/2016 04:26:25 PM MDT. (/portlet/article/html/imageDisplay.jsp?contentItemRelationshipId=7605350). Larimer County and Fort ...
Sep 8, 2016 - understand the evolution of individuals' accounts as they work through their careers. 1100 13th St. NW ⢠Suite 878 ⢠Washington, DC 20005.
Aug 30, 2016 - affect the use of health care services and spending: Do lower-paid workers defer ... The work of EBRI is made possible by funding from its.
Nov 19, 2014 - workers will not see major changes to their ... not lobby and does not take policy positions. The work of EBRI is made possible by funding from its members and ... EBRI-pg. 3. EBRI on Twitter: @EBRI or http://twitter.com/EBRI.
May 25, 2017 - does not take policy positions. The work of EBRI is made possible by funding from its members and sponsors, which include a broad range of ... or www.asec.org. PR 1191. EBRI on Twitter: @EBRI or http://twitter.com/EBRI.
Sep 17, 2015 - individual data for almost 26 ... It provides data for ... driving an overall increase allocated to equities in each these groups from 2010â2013.
Jan 28, 2015 - News from EBRI ... In contrast, the EBRI also found positive news in that certain other debt measures ... Blog: https://ebriorg.wordpress.com/.
Aug 31, 2017 - ... rates may have been affected by the ACA, the Great Recession of 2007â2009, and the subsequent economic recovery. The data come from.
Mar 26, 2015 - surveys monitoring trends in health ... Health Care Survey, and examine the availability of HRAs and HSA-eligible plans, as well as employer.
Jan 21, 2016 - Apple devices and Google Play for Android devices. The Employee Benefit Research Institute is a private, nonpartisan, nonprofit research ...
May 25, 2017 - insured adults were enrolled in a CDHPâa health plan associated with ... conducts objective research and education to inform plan design and ...
Dec 17, 2015 - knowledgeable about their work place benefits, and prefer life ... EBRI's publications can also be accessed through mobile device apps, available in the Apple store for. Apple devices and Google Play for Android devices.
