Nielsen Technology: How does it work?
-
Upload
television-industry-committee -
Category
Business
-
view
588 -
download
3
description
Transcript of Nielsen Technology: How does it work?
Damien Pilkington-Lewis October 2013
UNITAM SYSTEM OVERVIEW
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
2
UNITAM SYSTEM - OVERVIEW
Meters UNITAM-3 meters in the field capture viewing data from
each TV and upload it to base
UNITAM System Collects data from meters, identifies
channels and viewing activities and produces output for production
system
Production and Reporting
Receives output from UNITAM, performs
weighting, validation and prepares output
for clients
Key Points: • Built on 30+ years of TAM experience, including 12 years of experience
with audio matching • Delivering daily data in over 20 countries around the world • Comprehensive and flexible, meeting the needs of the most
demanding clients • Primary method of channel identification is audio matching • IR hints are used as a secondary method to resolve ties and identify
special activities
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
3
UNITAM – PROCESS FLOW
Collect data from meters in
panel
Met
ers
Collection & Crediting
Collection IR Key Identification
UNITAM Collection and Crediting Function
Match audio signatures against
references to identify channel
Audio Matching
Match IR keys against Global DB
to identify keys pressed
Crediting
Merge data. Apply crediting rules. Identify
special activities. Produce output for production system.
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
4
HH 1
COLLECTION ARCHITECTURE
Inte
rnet
Nielsen WAN
Production HUB 2 - Europe
DMZ
Inte
rnal
FW
Exte
rnal
FW
Production Production
Production Collection
LAN
TV #1
TV #2
HH 2
TV #1
Production HUB 1 - US
DMZ
Inte
rnal
FW
Exte
rnal
FW
Production Production
Production Collection
LAN
IP Based (GPRS) Reliable Secure
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
5
IR KEY IDENTIFICATION
Field & QC Local teams identify unrecognized IR keys using Quality Control tools. Unrecognized
remotes are referenced and sent
to GSC.
Global Support Center
Validates reference data received from
countries. If validation rules are passed then add to
Global DB
Meter IR sensor captures IR,
generates IR signatures for each
key pressed
Collection Collection Facility
collects IR signatures, sends to IR matching process
IR Matching Process
Matches IR signatures from
meter with global IR Database to identify
keys
Output Output is fed into the audio matching and
crediting processes
Matching
Referencing
Global DB Deployment
Updated IR DB is deployed to
countries ready to be used in overnight
processing
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
6
AUDIO MATCHING – INTRODUCTION
Sampled Content (Households)
Reference Content (TV Signals)
Audio Matching Process
Viewing Statements
Matching
Audio Signal
1001010100101001 1010010010010010 0011001010010100 0010010111001001 1110010100011100 0010110101010001 1001010100101001 1010010010010010 0011001010010100 0011001010010100
Digital Stream
10011101
Signature
Signature Generation
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
7
AUDIO MATCHING – CHANNEL IDENTIFICATION
010101010
Household TV set
.
.
.
Ch 35
Ch 1
Ch 2
Ch 3 . . .
Ch N
100100100
101101101
101010101
010101010
011011011
Reference Database Digital
Comparison
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
8
AUDIO MATCHING – CHANNEL IDENTIFICATION
Channel 1 Channel 2
010010010001000010101010 Ch 1
100101010010100101001010 Ch 2
Ch ???
010010010010100101001010
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
9
AUDIO MATCHING – LIVE VIEWING
Meter Signatures
Viewing
Channel 1
References
Channel 2
Channel 3
Channel 4
Channel N
…
10:46:17
Live window (usually +/- 20 seconds)
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
10
AUDIO MATCHING – TSV VIEWING
Meter Signatures
Viewing
Channel 1
References
Channel 2
Channel 3
Channel 4
Channel N
…
10:46:17
+20 Secs / -7 Days
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
11
SIMULCAST RESOLUTION – AUDIO MATCHING
Channel B
010010010001011101001010 Ch A
010010010110100101001010 Ch B
Ch ???
010010010110100101001010
Simulcast
Ch 1 & Ch 2 Same Audio
Simulcast
Ch 1 & Ch 2 Same Audio
Unique
Match Only with Ch 2
When there is simulcast (same audio) between multiple channels, we can identify the channel viewed if there is any piece audio content that is unique to 1 of the channels. The unique piece can be as short as a single commercial.
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
12
SIMULCAST RESOLUTION – UNRESOLVED
A, B or C?
Channel A
Channel
B
Channel C
The future starts here.
Ch ???
X
Z
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
13
SIMULCAST RESOLUTION – USING IR KEYS
A, B or C?
The future starts here.
Ch ???
X
Z
Audio Matching
IR Keys 4 6 +
• Almost all channel changes are made using IR keys with a remote control
• Even if audio is identical, IR keys present at the channel change time can be examined and used to identify the channel
• Nielsen has developed a proprietary algorithm using 9 years of experience of IR crediting to support a wide range of IR activities
Copy
right
©20
12 T
he N
ielse
n Co
mpa
ny. C
onfid
entia
l and
pro
prie
tary
.
14
CREDITING PROCESS
IR Keys IR keys pressed by the Panel Member
Audio Matching Channels
identified by audio matching
process
Statements TV On, Members
etc
Crediting Process
Meter Data Validation
IR, Audio, Statement Data Merge
Zapping Identification (Periods when Panel Member is changing
channels quickly)
Non-Tracked Activity (NTA) Identification (Program Guide Usage, Mute, Standby, Play/Pause/FF/Rew, Non-Broadcast etc)
Teletext Identification (Periods when Panel Member is using a
Teletext service)
Production and Reporting System