Social Media Analytics

author: Jure Leskovec, Computer Science Department, Stanford University
published: Sept. 9, 2011,   recorded: August 2011,   views: 7382
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Slides

Slides
0:00 Social Media Analytics: Part 1: Information flow
1:35 Information and Networks
2:37 Social Media: Big change
3:37 Social Media: Opportunities
4:01 Social Media: Value proposition
4:28 Applications: Reputation management
5:30 Applications: Citizen response
6:37 Applications: Real-time citizen journalism
7:12 Applications: Social media marketing
7:57 Applications: Human behaviour analysis
8:34 The tutorial: Social Media
9:33 Tutorial Outline (1)
9:59 Part 1 of the Tutorial: Overview
10:35 Social Media Data: Spinn3r
12:00 Tracing Information Flow
14:02 Tracing information (1): Hyperlinks
14:45 Cascading hyperlinks
15:51 Cascade Shapes
16:59 Tracing sentiment of cascade (1)
18:20 Tracing sentiment of cascade (2)
20:55 Tracing hyperlinks: Pros/Cons
21:09 - Questions
21:42 Tracing hyperlinks: Pros/Cons
22:59 Issue: Cascades and Missing data
23:51 What happens with missing data?
25:24 Problem Statement
25:59 Tracing Information (2): Twitter
26:42 Tracing Information on Twitter (1)
28:37 Tracing Information on Twitter (2)
29:46 Tracing Information on Twitter (3)
30:44 Tracing Information (3): Memes
32:15 Challenge: Quotes Mutate
33:37 Finding Mutational Variants (1)
35:33 Finding Mutational Variants (2)
36:45 Insights: Quotes reveal pulse of media
37:38 Insights: When sites mention quotes?
38:28 Insights: Quotes on Great depression
40:26 Tracing Information
41:10 Tutorial Outline (2)
41:27 Patterns of Information Attention
42:29 Discovering Attention Patterns
42:57 Clustering Temporal Signatures
44:20 Patterns of Attention
46:00 Analysis of Attention Patterns (1)
47:09 Analysis of Attention Patterns (2)
47:39 Predicting Information Attention (1)
49:08 Predicting Information Attention (2)
50:32 Linear Influence Model
51:19 LIM: Strategy
52:43 The Linear Influence Model (1)
53:30 The Linear Influence Model (2)
55:03 Estimating Influence Functions (1)
55:33 LIM: Influence Functions
56:42 LIM as Matrix Equation
57:45 Estimating Influence Functions (2)
58:07 LIM: Performance
58:16 - Questions
58:49 - Questions
59:47 LIM: Performance
61:44 Analysis of Influence Functions
62:40 Analysis of Influence
64:03 Tutorial Outline (3)
64:13 Inferring the Diffusion Network
64:50 Inferring the Diffusion Networks
65:41 Examples and Applications
66:34 The optimization problem
69:07 Information Diffusion Model (1)
70:25 Information Diffusion Model (2)
71:57 Complication: Too many trees
73:09 Optimization problem
75:19 NetInf: Submodularity
77:07 NetInf: The Algorithm
78:07 Experiments: Synthetic Data
79:07 Example: Real Data
79:46 Example: Diffusion Network
80:02 Diffusion Network (small part)
81:43 Detecting information outbreaks
83:03 Two parts to the problem
84:07 CELF: Covering stories
84:33 Blogs: Information Epidemics
85:29 Experimental Results
86:27 Conclusions and Connections
87:12 Further Qs: Opinion Dynamics
87:37 References (1)
87:45 References (2)

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Description

Online social media represent a fundamental shift of how information is being produced, transferred and consumed. The present tutorial investigates techniques for social media modeling, analytics and optimization. First we present methods for collecting large scale social media data and then discuss techniques for coping with and correcting for the effects arising from missing and incomplete data. We proceed by discussing methods for extracting and tracking information as it spreads among the users. Then we examine methods for extracting temporal patterns by which information popularity grows and fades over time. We show how to quantify and maximize the influence of media outlets on the popularity and attention given to particular piece of content, and how to build predictive models of information diffusion and adoption. As the information often spreads through implicit social and information networks we present methods for inferring networks of influence and diffusion. Last, we discuss methods for tracking the flow of sentiment through networks and emergence of polarization.

Visit the tutorial website at http://snap.stanford.edu/proj/socmedia-kdd/.

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