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Machine Learning Meets Media Analysis: From Hype to Reality

You are here: Home » AMEC Member Article » #AMEC25 » Machine Learning Meets Media Analysis: From Hype to Reality

Machine Learning Meets Media Analysis: From Hype to Reality

1st September 2021/in #AMEC25, AMEC Member Article, AMEC Tech Hub SIG, News AMEC Tech Hub, Commetric, Georgi Ivanov/by Julie Wilkinson

There is hardly any industry that has not jumped on the AI and Big Data Analytics bandwagon yet, but one notably lags- Public Relations (PR) and Communication. A possible reason for this is that PR is an inherently difficult discipline to quantify. Another is that the fields of AI which can provide transformational value to PR & Comms – Natural Language Processing (NLP), and Natural Language Understanding in particular, are yet to reach their optimal productivity, and according to Gartner’s Hype Cycle of Natural Language Technologies still have some five to ten years to go till mainstream adoption.

 

 

 

 

 

 

 

 

 

 

 

 

Source: https://behavioralsignals.com/behavioral-signals-a-sample-vendor-for-natural-language-technologies/

The value of Natural Language Understanding (NLU), the part of NLP that deals with computers’ ability to comprehend the structure and meaning of human language, to PR & Communication, lies in its application to automated reasoning, machine translation, news-gathering, text categorisation, and large-scale content analysis.

Despite the challenges in NLP, which we will discuss later in the article, NLU presents significant opportunities for communication professionals and media analytics providers to achieve a granular analysis of textual data faster and more effectively.

For example, using machine learning for harnessing social media data can help identify unarticulated, unprompted, latent consumer needs, uncover platforms for category growth and integrate those with digital activation strategy.

Decoding consumer language on social media: the holy grail of enterprise social media solutions

Taking the example of social media, the key step to generating deep insights from consumer conversations on social media is leveraging NLP to create a business relevant taxonomy. Neither the software as a service (SaaS) NLP solutions nor the commercially available unsupervised deep learning algorithms can deliver this.

What we need is to create a much deeper taxonomy that can ladder-up to the main themes we have identified in the conversation. For example, talking of sports drinks – at a first level, it will be different topics related to consumption (such as health, taste). To uncover insights, we need to go deeper into a multi-layered NLP which is a combination of man and machine. For instance, what are the different sub-topics within health, what is it that consumers are talking about within each of these sub-subtopics of health, are consumers talking of sustaining energy or sensory pleasure, what sports drinks are they using when talking of these actions, what are consumer emotional motivations, what are the feelings (sentiment) associated with these actions, what are the moments consumers are talking of these actions, what are the benefits and concerns consumers share about sports drinks and what are the behavioural changes they are doing as a result of these concerns. All these help to build a detailed taxonomy.

In typical studies like the sports drinks case, taxonomy comprises of 300 – 500 variables. In broader category studies, the taxonomy size can go up to 3,000+ variables.

No matter the category, it is this multi-layered NLP that provides the taxonomy that can be analysed, interpreted and re-constructed upwards to uncover meaningful insights, such as identifying  opportunities for growth in a category. In such cases, the analysis focuses on problems or moments that consumers talk a lot about but are not happy about these moments (they are associated with negative sentiment), i.e. there are unmet needs to be resolved, or niche opportunities which few consumers talk about with strongly positive sentiment.

Thus, one of the key components of NLP for taxonomy creation is uncovering the sentiment at scale, i.e. uncovering the sentiment associated with each individual construct (and not individual conversations) within each conversation.

The process of creating such a granular taxonomy is a combination of supervised and unsupervised machine learning. Though the principles are no different from how survey data is analysed and interpreted, the sheer volume of data (in the range of 200,000 to 60 million+ conversations) and variables (300-3,000+) requires a different skill-set, tools and mind-set.

Once a granular taxonomy and associated sentiment rules have been created using a combination of man and machine, deep learning algorithms can be trained for allocation of future data to business relevant taxonomy and insights. As deep learning algorithms are only as good as the basis on which the deep learning is trained, their specificity makes them more relevant and useful.

NLP’s top challenge and the road ahead

The biggest challenge in natural language processing (NLP) is the shortage of training data. In projects like the one described above, it is rarely the case that more than a few thousand or a few hundred thousand human-labeled training examples can be used. However, modern deep learning-based NLP models see benefits from much larger amounts of data, improving when trained on millions, or billions, of annotated training examples.

To overcome this challenge, researchers have developed a variety of techniques for training general purpose language representation models using the enormous amount of unannotated text on the web (known as pre-training). The pre-trained model can then be fine-tuned on small-data NLP tasks like question answering and sentiment analysis, resulting in substantial accuracy improvements compared to training on these datasets from scratch.

The year 2018 has been an inflection point for machine learning models handling text because it marked the release of BERT,  an event described as marking the beginning of a new era in NLP.

BERT, which stands for Bidirectional Encoder Representations with Transformers, is a Deep Neural Network architecture built upon the idea of learning a representation of language, called a language model (aka the Encoder Representation in its acronym), to predict tokens or sequences given a context.

BERT is a model that broke several records for how well models can handle language-based tasks. Soon after the release of the paper describing the model, the research team at Google also open-sourced the code of the model, and made available for download versions of the model that were already pre-trained on massive datasets. This is a momentous development since it enables anyone building a machine learning model involving language processing to use this powerhouse as a readily-available component – saving the time, energy, knowledge, and resources that would have gone to training a language-processing model from scratch.

As a high level illustration of the way BERT makes sense of human language, we can run a BERT model trained on Wikipedia pages on the first two paragraphs of a Guardian article on the meet industry:

“Both the planet and US politics have heated up in tandem over recent decades, but few sectors have stewed in controversy quite like America’s beef industry. Four super-powered meatpackers control more than 80% of the US beef market, an extraordinary concentration of market power that the Biden administration is not happy about.

A recent executive action signed by the president aims to increase competition in the beef industry, with the White House noting that, over the past five years, “farmers’ share of the price of beef sales has dropped by more than a quarter – from 51.5% to 37.3% – while the price of beef has risen”.”

Below are the resulting IPTC Media Topics BERT identified in the snippet with their respective frequencies

What is powerful about these pre-trained Deep Learning Language Models is that they provide a representation of how a language works and thus alleviates downstream tasks. For instance, we can train a classifier by adding a final layer to our pre-trained language model and fine tune its last layer(s) to this specific task. Thus, we need less annotated data to achieve better results.

Whatever the opportunities, machine learning may not replace the art of communication and strategic media analytics anytime soon. In fact, an algorithm advanced enough to replace the instinct and creativity of humans may very well be the last thing mankind invents.

Author: Georgi Ivanov Director of Global Marketing at Commetric

 

 

 

 

 

Tags: AI, AMEC Tech Hub, Analytics, big data, media analysis
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https://amec.blazedev.co.uk/wp-content/uploads/2021/09/tech_logo-better.png 500 500 Julie Wilkinson https://amec.blazedev.co.uk/wp-content/uploads/2021/01/AMEC-25.png Julie Wilkinson2021-09-01 14:03:302021-09-02 08:25:57Machine Learning Meets Media Analysis: From Hype to Reality

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