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DATA MODELING IN IPTV AND OTT RECOMMENDER SYSTEMS –
INFORMATION FLOW FROM INTERACTION TO PERSONALIZED
RECOMMENDATIONS
Dávid Zibriczky, ImpressTV
Neo4j Meetup 2016-02-18
2
Introduction
3
Who we are?
• Acquisition of IPTV, OTT and media business line of Gravity R&D (July 2014)
• Technical Centre in Budapest, sales and management from the UK
What we are doing?
• Providing personalized recommendations, data analytics, targeted advertising and audience measurement for corporate clients
• Main domains: Video-On-Demand, Linear TV, OTT, Advertisements
About ImpressTV
4
• More time spent watching media contents than ever
• Hundreds of channels, ten thousands of movies, millions of user uploaded videos
• Heterogeneous mixture of devices and items
• Massive consumption information
• Cloudization and centralization
Then and Now
5
Source: http://bigscreenglobal.com/
6
What is a Recommender System?
7
• For the consumers
› Content discovery (relevance, time, information filtering)
› Exploring new preferences (habits, engagement)
• For the business
› Improving KPIs, balancing consumption (long tail contents)
› Promotions, targeting, campaign, analytics, reporting
• For the recommender system vendors
› Data integration/modeling, insights, data science, optimization, research
› Technology challenges, deployment, maintenance
What does a Recommender System mean in TV business?
8
Data modeling
9
Data sources
• Interactions:
› Sources: Remote controller + interface, touchpad, mouse, keyboard
› Explicit / implicit feedbacks: Rating, like, (click) / buy, watch, record, subscribe, channel switch
› Context: Time, date, device, duration, price
• Item catalog:
› Sources: TV provider, external sources (Freebase, DBPedia, IMDb, …)
› Metadata: Descriptive (title, synopsis), technical (schedule, resolution, item type), commercial (price)
• User catalog:
› Sources: Internal, social network
› Metadata: Gender, age group, location
• Recommendation request: user id, item ids, device, location, time, session id
10
Let’s build some graphs…!
Consumers
(Mary)
(Mark)
(John)
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
Inception(HD)
VOD/SVOD
Linear (EPG items)
CatchUp
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
BBC HD
Inception(HD)
TV Channels
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
BBC HD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
InceptionTVOD
($11.99)
($9.99)
($2.99)
VOD/SVOD/Channel products
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
($11.99)
($9.99)
($2.99)
InceptionTVOD
Interface
BBC HD
Devices(remote controller, mouse, touch pad)
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
($11.99)
($9.99)
($2.99)
InceptionTVOD
(19:25; 1136s)
(19:00)
(16:13; 3715s)
(20:10; 1135s)
Interface
BBC HD
(21:11; 3651s; 5*)
Implicit/Explicit feedbacks + context
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
($11.99)
($9.99)
($2.99)
InceptionTVOD
(19:25; 1136s)
(19:00)
(21:11; 3651s; 5*)
(16:13; 3715s)
(20:10; 1135s)
Interface
TV provider related space
BBC HD
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
($11.99)
($9.99)
($2.99)
InceptionTVOD
(19:25; 1136s)
(19:00)
(21:11; 3651s; 5*)
(16:13; 3715s)
(20:10; 1135s)
Interface
TV provider related space
TopGear S01
Friends S01
Friends S02
Collections
BBC HD
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
($11.99)
($9.99)
($2.99)
InceptionTVOD
(19:25; 1136s)
(19:00)
(21:11; 3651s; 5*)
(16:13; 3715s)
(20:10; 1135s)
Interface
TV provider related space
TopGear S01
Friends S01
Friends S02
Collections
Movies
Series
Shows
Domains
Domain dependent contents
BBC HD
Friends S01E01
Friends S02E05
Consumers
Friends S01E02
News 2016-02-18 07:00
(Mary)
(John)
(Mark)
Contents
Star Wars IV. VOD (SD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
NewsBBC HD 07:00
Items
HBO SD
HBO 2 SD
Friends Series
MovieChannels
Products
Inception(HD)
Star WarsPackage
($11.99)
($9.99)
($2.99)
InceptionTVOD
(19:25; 1136s)
(19:00)
(21:11; 3651s; 5*)
(16:13; 3715s)
(20:10; 1135s)
Interface
TV provider related space
TopGear S01
Friends S01
Friends S02
Collections
Movies
Series
Shows
Domains
TV
Domain dependent contents
Musics
BooksBBC HD
Movies
Series
Shows
Friends S01E01
Friends S02E05
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Male
Action
InceptionHBO 20:00
Domain dependent contents
Collections Contents Items Products Interface Consumers
TV
Friends S01E02
Domains
TV provider related space
News 2016-02-18 07:00
News
NewsBBC HD 07:00
Harrison Ford
Female
ComedyHBO SD
HBO 2 SD
HD
SD
Friends Series
Star WarsPackage
TopGear S01
Friends S01
Friends S02
Musics
(19:25; 1136s)
(19:00)
(16:13; 3715s)
($11.99)
MovieChannels
($9.99)
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
(20:10; 1135s)
InceptionTVOD
($2.99)
(21:11; 3651s; 5*)
BBC HD
Meta data
Books
Movies
Series
Shows
Friends S01E01
Friends S02E05
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Male
Action
InceptionHBO 20:00
Domain dependent contents
Collections Contents Items Products Interface Consumers
TV
Friends S01E02
Domains
TV provider related space
News 2016-02-18 07:00
News
NewsBBC HD 07:00
Harrison Ford
Female
ComedyHBO SD
HBO 2 SD
HD
SD
Friends Series
Star WarsPackage
TopGear S01
Friends S01
Friends S02
Musics
(19:25; 1136s)
(19:00)
(16:13; 3715s)
($11.99)
MovieChannels
($9.99)
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
(20:10; 1135s)
InceptionTVOD
($2.99)
(21:11; 3651s; 5*)
BBC HD
Meta data
Books
24
Graph representation
Nodes
• Entities: Users, items, contents, product, collections
• Metadata: Genres, actors, category tree nodes, gender, age group
• Node properties: Auxiliary meta data (e.g. descriptions)
Edges
• Interactions: Implicit/explicit feedbacks
• Metadata containment, relations
• Edge properties: Context, direction
25
Unification challenges
PVR
LiveTV
CatchUp
SVOD
TVOD
ADs
Devices
Social Networks
Metadata sources
TV items (providers)
26
Recommendations
27
Evolution of the Recommender Problem
Source: http://www.slideshare.net/xamat/recsys-2014-tutorial-the-recommender-problem-revisited
28
29
Collaborative Filtering
Movies
Series
Shows
Friends S01E01
Friends S02E05
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Male
Action
InceptionHBO 20:00
Domain dependent contents
Collections Contents Items Products Interface Consumers
TV
Friends S01E02
Domains
TV provider related space
News 2016-02-18 07:00
News
NewsBBC HD 07:00
Harrison Ford
Female
ComedyHBO SD
HBO 2 SD
HD
SD
Friends Series
Star WarsPackage
TopGear S01
Friends S01
Friends S02
Musics
(19:25; 1136s)
(19:00)
(16:13; 3715s)
($11.99)
MovieChannels
($9.99)
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
(20:10; 1135s)
InceptionTVOD
($2.99)
(21:11; 3651s; 5*)
BBC HD
Meta data
Books
Movies
Series
Shows
Friends S01E01
Friends S02E05
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Male
Action
InceptionHBO 20:00
Domain dependent contents
Collections Contents Items Products Interface Consumers
TV
Friends S01E02
Domains
TV provider related space
News 2016-02-18 07:00
News
NewsBBC HD 07:00
Harrison Ford
Female
ComedyHBO SD
HBO 2 SD
HD
SD
Friends Series
Star WarsPackage
TopGear S01
Friends S01
Friends S02
Musics
(19:25; 1136s)
(19:00)
(16:13; 3715s)
($11.99)
MovieChannels
($9.99)
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
(20:10; 1135s)
InceptionTVOD
($2.99)
(21:11; 3651s; 5*)
BBC HD
Meta data
Books
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
Items Products Interface Consumers
NewsBBC HD 07:00
HBO SD
HBO 2 SD
Friends Series
Star WarsPackage
(19:25; 1136s)
(19:00)
(16:13; 3715s)
($11.99)
MovieChannels
($9.99)
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
(20:10; 1135s)
InceptionTVOD
($2.99)
(21:11; 3651s; 5*)
BBC HD
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
InceptionHBO 20:00
Items Consumers
NewsBBC HD 07:00
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
34
Collaborative Filtering / Graph representation
The Matrix
The Matrix 2
The Matrix 3
Twilight
35
Collaborative Filtering / Matrix representation
The Matrix
The Matrix 2
The Matrix 3
Twilight
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 1 ? ?
User 2 1 1 0 0
User 3 1 0 1 1
User 4 1 0 0 1
?
?
36
Collaborative Filtering / Binary preference matrix
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 1 ? ?
User 2 1 1 0 0
User 3 1 0 1 1
User 4 1 0 0 1
37
Collaborative Filtering / Implicit MF
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1
User 2 𝒓𝑢𝑖
User 3
User 4
Q 𝒒𝑖
PT
𝒑𝑢𝑇
𝑹𝑵𝒙𝑴: preference matrix
𝑷𝑵𝒙𝑲: user feature matrix
𝑸𝑴𝒙𝑲: item feature matrix
𝑵: #users
𝑴: #items
𝑲: #features
𝑲 ≪ 𝑴 , 𝑲 ≪ 𝑵
𝑹~𝑷𝐓𝑸 𝑟𝑢𝑖 = 𝒑𝑢T𝒒𝑖
38
Collaborative Filtering / Implicit MF / Weighted Sum of Squared Errors
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 1 ? ?
User 2 1 1 0 0
User 3 1 0 1 1
User 4 1 0 0 1
CThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 c11 c12 1 1
User 2 c21 c22 1 1
User 3 c31 1 c33 c34
User 4 c41 1 1 1
𝒇 𝑷,𝑸 = 𝑾𝑺𝑺𝑬 =
(𝒖,𝒊)
𝒄𝒖𝒊 𝒓𝒖𝒊− 𝒓𝒖𝒊𝟐• Objective Function:
39
Collaborative Filtering / Implicit MF / Alternating Least Squares
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1
User 2
User 3
User 4
Q
0.1 -0.4 0.8 0.3
0.6 0.7 -0.1 0.8
PT
-0.2 0.6
0.6 0.4
0.7 -0.2
0.5 -0.2
𝑹~𝑷𝐓𝑸 𝑟𝑢𝑖 = 𝒑𝑢T𝒒𝑖
Ridge Regression
• 𝑝𝑢 = 𝑄𝐶𝑢𝑄T −1𝑄𝐶𝑢𝑅𝑟 𝑢
• 𝑞𝑖 = 𝑃𝐶𝑖𝑃T −1𝑃𝐶𝑖𝑅𝑐 𝑖
40
Collaborative Filtering / Implicit MF / Alternating Least Squares
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1
User 2
User 3
User 4
Q
0.3 -0.3 0.6 0.2
0.7 0.8 0.2 0.7
PT
-0.2 0.6
0.6 0.4
0.7 -0.2
0.5 -0.2
Ridge Regression
• 𝑝𝑢 = 𝑄𝐶𝑢𝑄T −1𝑄𝐶𝑢𝑅𝑟 𝑢
• 𝑞𝑖 = 𝑃𝐶𝑖𝑃T −1𝑃𝐶𝑖𝑅𝑐 𝑖
𝑹~𝑷𝐓𝑸 𝑟𝑢𝑖 = 𝒑𝑢T𝒒𝑖
41
Collaborative Filtering / Implicit MF / Alternating Least Squares
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1
User 2
User 3
User 4
Q
0.3 -0.3 0.6 0.2
0.7 0.8 0.2 0.7
PT
-0.2 0.7
0.6 0.5
0.8 -0.2
0.6 -0.2
Ridge Regression
• 𝑝𝑢 = 𝑄𝐶𝑢𝑄T −1𝑄𝐶𝑢𝑅𝑟 𝑢
• 𝑞𝑖 = 𝑃𝐶𝑖𝑃T −1𝑃𝐶𝑖𝑅𝑐 𝑖
𝑹~𝑷𝐓𝑸 𝑟𝑢𝑖 = 𝒑𝑢T𝒒𝑖
42
Collaborative Filtering / Implicit MF / Alternating Least Squares
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 0.02 0.45
User 2
User 3
User 4
Q
0.3 -0.3 0.6 0.2
0.7 0.8 0.2 0.7
PT
-0.2 0.7
0.6 0.5
0.8 -0.2
0.6 -0.2
𝑹~𝑷𝐓𝑸 𝑟𝑢𝑖 = 𝒑𝑢T𝒒𝑖
43
Content-based Filtering
Movies
Series
Shows
Friends S01E01
Friends S02E05
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Male
Action
InceptionHBO 20:00
Domain dependent contents
Collections Contents Items Products Interface Consumers
TV
Friends S01E02
Domains
TV provider related space
News 2016-02-18 07:00
News
NewsBBC HD 07:00
Harrison Ford
Female
ComedyHBO SD
HBO 2 SD
HD
SD
Friends Series
Star WarsPackage
TopGear S01
Friends S01
Friends S02
Musics
(19:25; 1136s)
(19:00)
(16:13; 3715s)
($11.99)
MovieChannels
($9.99)
(8880s; 20:00-22:28)
(Mary)
(John)
(Mark)
(20:10; 1135s)
InceptionTVOD
($2.99)
(21:11; 3651s; 5*)
BBC HD
Meta data
Books
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Action
InceptionHBO 20:00
Contents Items Products Interface Consumers
News
NewsBBC HD 07:00
Harrison Ford
ComedyHBO SD
HBO 2 SD
HD
SD
Friends Series
Star WarsPackage
(16:13; 3715s)
MovieChannels
(8880s; 20:00-22:28)
(John)
(20:10; 1135s)
InceptionTVOD
BBC HD
Star Wars IV. VOD (SD)
Inception(HD)
Star Wars VII. VOD (HD)
InceptionCatchUp feb 17
InceptionHBO2 22:00
Friends S01E01 SVOD
InceptionPVR 20:00
Action
InceptionHBO 20:00
Contents Items Products Consumers
News
NewsBBC HD 07:00
Harrison Ford
Comedy
HD
SD
(8880s; 20:00-22:28)
(John)
47
Content-based Filtering / Cosine Similarity (1/6)
Sci-Fi RomanceAdventure
The Matrix
The Matrix 2
The Matrix 3
Twilight
48
Content-based Filtering / Cosine Similarity (2/6)
Sci-Fi RomanceAdventure
The Matrix
The Matrix 2
The Matrix 3
Twilight
?
?MT Sci-Fi Adventure Romance
The Matrix
1 1 0
The Matrix 2
1 1 0
Twilight 0 1 1
The Matrix 3
1 1 0
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 ? ?
49
Content-based Filtering / Cosine Similarity (3/6)
MT Sci-Fi Adventure Romance
The Matrix
1 1 0
The Matrix 2
1 1 0
Twilight 0 1 1
The Matrix 3
1 1 0
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 ? ?
50
Content-based Filtering / Cosine Similarity (4/6)
M’T Sci-Fi Adventure Romance
The Matrix
1/6 1/8 0
The Matrix 2
1/6 1/8 0
Twilight 0 1/8 1/2
The Matrix 3
1/6 1/8 0
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 ? ?
𝑚′𝑖𝑗 =𝑚𝑖𝑗
𝑘𝑚𝑖𝑘 𝑘𝑚𝑘𝑗
51
Content-based Filtering / Cosine Similarity (5/6)
M’T Sci-Fi Adventure Romance
The Matrix
1/6 1/8 0
The Matrix 2
1/6 1/8 0
Twilight 0 1/8 1/2
The Matrix 3
1/6 1/8 0
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 ? ?
PT Sci-Fi Adventure Romance
User 2/6 2/8 0
𝑃T = 𝑅𝑀′T
52
Content-based Filtering / Cosine Similarity (6/6)
M’T Sci-Fi Adventure Romance
The Matrix
1/6 1/8 0
The Matrix 2
1/6 1/8 0
Twilight 0 1/8 1/2
The Matrix 3
1/6 1/8 0
RThe
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 ? ?
PT Sci-Fi Adventure Romance
User 2/6 2/8 0
𝑹The
MatrixThe
Matrix 2Twilight
The Matrix 3
User 1 1 0.268 1
𝑟𝑢𝑖 = 𝑘𝑚′𝑖𝑘 𝑝𝑢𝑘
𝑘𝑚′𝑖𝑘2 𝑘 𝑝𝑢𝑘
2
𝑃T = 𝑅𝑀′T
53
Challenges and research
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• Who is the front of the TV? (watching behavior pattern recognition)
• Cold-start problem, opt-out users (metadata enrichment, hybrid filtering)
• Noise filtering, lack of explicit data (filtering and weighting method, implicit feedbacks)
• Context-dependency (device, time, mood)
• Cross-domain recommendation, content centralization
• Time-dependent recommendable set (model-based methods)
• Popularity effect (diversification)
• Upselling, subscription (Live VOD)
• Offline vs. Online KPIs
Data Science Challenges
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• Heterogeneous external data sources (data unification)
• Big data (scalable algorithms, distributed databases)
• Latency in data transfer, streaming service
• Responsivity, load, SLA (distributed systems, load balancer)
• Maintenance, service, follow-up
• Open source vs. self-development
• Distributed systems vs. single server
• Software-as-a-service vs. on-site deployment
Technology Challenges
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Presented by:
Contact:
THANK YOU!
www.impresstv.com
David Zibriczky
Head of Data Science
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• Senior Software Engineers (Java, .NET)
• Developer (Java, Python, Node.js)
• Senior Data Mining Engineer
• Pre-sales Technical Consultant
• Data Scientist
• Contact: [email protected]
• Website: www.impresstv.com
We are hiring!
