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Sentiment Analysis Applied Advertising & Public Relations Research JOMC 279
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"Listening is the study of naturally occurring conversations, behaviors, and signals—information that may or may not be guided—that brings the voice of people's lives in to a brand."
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Why Do Brands Listen? Insights (wants, unmet needs, challenges) Voice of consumer Redefine relationships Understand shifts in perspectives Understand context & reasons why
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Where Do Brands Listen? Offline – Comment cards – Trade-show notes – CRM / sales mgmt. systems Online – Brand backyard – Customer backyard
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Whom Do Brands Listen To? Customers Prospects Business partners Friends, contacts, followers Others
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How Do Brands Make Sense of What They Hear? Search & Monitoring Text Analytics Full-Service Listening Platforms Private Communities
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Measuring what your customers say about you when they're talking to each other. LISTENING
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Advantages (Online) Unobtrusiveness Immediate / Real-time Natural, rich, unfiltered WOM BIG data
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Disadvantages (Online) Ethics Representativeness / Accuracy WOM Noise BIG data
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Sentiment Analysis aka “opinion mining” Measurement of emotion in texts – Polarity – Strength Human coding vs. NLP Methodological standards / transparency
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Project 2 Results Data set: You were provided with 200 Tweets related to pizza. (2 sets) Code each Tweet as – Positive, Negative, Mixed, or Neutral. When coded as Positive, Negative, or Mixed, identify the portion of the Tweet that resulted in that decision. Evaluate the difficulty of the coding decision.
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Natural Language Processing SocialRadar vs. SentiStrength Observed agreement =.315 – Both data sets Why would computing kappa be inappropriate in this situation?
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OAkappa Sentistrength0.6800.502 Sentistrength0.6000.424 Sentistrength0.5850.374 Sentistrength0.5100.314 Sentistrength0.5000.309 Sentistrength0.4850.307 Sentistrength0.4150.150 Social Radar0.4600.211 Social Radar0.4500.151 Social Radar0.4450.203 Social Radar0.4000.207 Social Radar0.3800.184 Social Radar0.3650.188 Social Radar0.3200.172
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“After coding these tweets, it is easy to see why computers might not be the most effective way for a brand or company to decipher customers’ tweets about a product or service.”
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“I have come to admire people who are professional coders.” But are humans better?
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OAkappa 0.6600.487 0.5550.295 0.5250.310 0.8100.712 0.7000.556 0.6700.519 0.6650.513 0.6650.526 0.6650.512
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Difficulty correlations 0.397 0.381 0.358 0.344 0.338 0.238 0.229 0.160 0.078
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