Unleashing the creative power of machines: Exploring generative AI, large language models and the future of content creation
Written by Viktoria Koleva | 7th of June 2023
At this point, almost everyone has heard of, read, or watched something about Generative AI, OpenAI, and ChatGPT. Did you ever feel overwhelmed by the numerous blog articles and videos on what generative AI is? That’s because you have started your AI itinerary from a later stop and missed some important milestones that will give context to your journey. So, let’s take a step back and dive into artificial intelligence and machine learning first.
Artificial intelligence (AI) is a discipline in computer science that focuses on developing intelligent agents – systems capable of autonomous reasoning, learning, and action. AI is all about building computer systems that think and act like humans. Machine learning (ML), on the other hand, is a subfield of artificial intelligence that focuses on the development and use of self-learning algorithms that derive knowledge from data to predict outcomes. ML algorithms enable computers to automatically learn and improve from experience or data without explicit instructions for each specific task. Instead, they can recognize patterns and make inferences based on the input data they receive.
Two of the most common classes of ML learning models are supervised and unsupervised ML models. Supervised learning uses labeled datasets to train algorithms to classify and predict outcomes. Labeled data comes with a tag like a name, type, or number. In supervised learning, the algorithm uses past examples to predict future values. Based on the input values, the model outputs a prediction and compares that prediction (predicted output) to the training data used for this model (expected output). If the predicted data values and the training data values are far from each other, an error occurs. The model thus tries to reduce the error until the predicted and expected (actual vs. desired) outcomes are achieved. Unsupervised learning, as the name suggests, uses unlabeled datasets and is all about working with raw data and discovering whether it naturally falls into groups or classes with common features. A third type of ML learning model is reinforcement machine learning. Reinforcement machine learning is similar to supervised learning, but the algorithm isn’t trained using sample data. Instead, this model learns through trial and error, meaning that feedback (error occurrence) is not provided after every comparison (predicted vs. expected) but after reaching the goal state.
Generative AI is a subset of deep learning using artificial neural networks processing both labeled and unlabeled data while using supervised, unsupervised, and semi-supervised learning methods. Simply put, Generative AI is a class of algorithms designed to generate new content (statistically probable outputs) based on the raw data they have been trained on.
Generative AI has grown tremendously in recent years. Three fundamental algorithms have shaped Generative AI into what we witness today.
a) Generative Adversarial Networks (GANs) are a type of generative model trained to create new data instances that resemble the training data. GANs have two components – the generator and the discriminator. The generator creates new data samples that become a negative example for the discriminator, which learns to distinguish the generated fake data from the real data. The discriminator penalizes the generator for producing dubious results, and so the model learns.
b) Variational Autoencoders (VAEs) are a type of generative model capable of learning compact representations of input data. VAEs consist of two main elements – encoder and decoder. Let’s define encoder as the process that produces a new data representation from the old data representation. Decoder is the reverse process. Another important term here is dimensionality reduction which is to be interpreted as data compression, where the encoder compresses the data (from the initial space to the encoded space, also called latent space), while the decoder decompresses it. Depending on the initial data distribution, the encoder definition, and the latent space, some information can be lost, and its recovery might not be possible. Once trained, VAEs can generate new data samples by randomly sampling points from the learned latent space distribution and decoding them using the decoder network. This property makes VAEs useful for tasks such as data synthesis, anomaly detection, and dimensionality reduction.
c) Transformer networks are a type of neural network that can work with sequential data, such as natural language. Their key innovative component is their self-attention mechanism. While traditional neural networks process input data sequentially, transformers can process data in parallel. The self-attention mechanism allows the model to determine the importance of different input elements (words or tokens) when making predictions while considering their relationship within the context.
Generative AI models are built using various models and frameworks such as Deep Learning Frameworks, Markov Chain Monte Carlo (MCMC), Reinforcement Learning, and Large Language Models (read more on that in the next section).
To summarize, Generative AI is a subfield of deep learning that focuses on creating new content, such as text, images, audio, and video, using different algorithms that are trained on a specific dataset. The algorithms then use that knowledge to generate new, unseen before samples that are not identical to but have the same characteristics as the input data.
Large Language Models are a subset of deep learning. LLMs refer to large, general-purpose language models designed to process vast amounts of text data and, by using advanced neural network architectures, learn from the patterns and relationships between words, phrases, and sentences in natural language. Large Language Models are trained for general purposes to solve routine language problems such as text classification, question answering, document summary, and text generation. The models can then be fine-tuned to solve specific problems in different areas using small datasets.
Here are some of the main features that define Large Language Models:
a) Size and scale: Large Language Models are trained on a vast amount of text data, encompassing billions of words.
b) Contextual understanding: LLMs use self-attention mechanisms and transformers to identify connections between words and phrases, enabling them to produce contextually relevant responses.
c) General purpose: As the name suggests, LLMs can sufficiently solve routine language problems (see above) due to the commonality in the human language.
d) Pre-training and fine-tuning: After pre-training on a large dataset, LLMs can be further fine-tuned on specific tasks or domains using a smaller dataset. Fine-tuning helps tailor the model’s performance for specific applications, allowing it to produce more accurate and contextually appropriate responses.
While language models are trained on data pulled from various sources such as Wikipedia, web pages, and communities such as Reddit, human capacities are also utilized to fine-tune the data. The training process is similar to how we learn new languages – we need to be guided by teachers and in an environment where we can hear and observe native speakers.
So, what are Large Language Models used for? Use cases include translations, content creation (blog articles, product descriptions, etc), chatbots, summaries of large amounts of text, and many more.
So, now that we have understood what Generative AI and LLMs are, it’s time to deep dive into the different language models out there. Over the course of the past couple of months, almost everyone has heard or read something about ChatGPT. So, what does GPT mean exactly? What is ChatGPT, and what does it have to do with OpenAI?
GPT stands for Generative Pre-trained Transformer – a family of neural network models that use the transformer architecture. By harnessing GPT models, applications can generate text and content that closely resemble human creations (images, audio, video, etc.). Moreover, GPT models empower these applications to engage in conversations and answer questions posed by users. Use cases of GPT include:
– Create marketing content such as social media posts, blog articles, e-books, guidelines, pitch decks, and email marketing campaigns
– Rephrase sentences, change the tonality and styling of paragraphs
– Write and learn code
– Analyze, structure and present data
– Build interactive voice assistants
– Create imagery, audio, and video content
And while ChatGPT has impressed users all over the world with its capabilities and interactiveness, we should all be aware that it may sometimes produce responses that sound plausible but may not always be accurate or factually correct. This is why we should be cautious when using it and always double-check the input it produces.
While GPT has certainly gained much attention over the past couple of months, there are other language models worth looking into. Here is an overview of the most common ones that considers their advantages, disadvantages, and capabilities:
Generative AI has taken the world by storm. It has found its place in the domain that was, up until recently, only reserved for humans – the creative realm. As we marvel at the stunning images that Generative AI created for us at a single prompt, as we read through that blog introduction that we couldn’t quite figure out, as we scroll through the thousands of words of research, we feel thankful for the advancement of technology and its ever-growing capacities. But consumed by instant gratification, we forget to look at the bigger picture. With each disruptive technology comes great risk. Now that the technology exists, we start asking ourselves: How will this technology will be integrated into our daily lives? How does it disrupt behavioral patterns? What new behaviors and habits will result from it? Do we have the capacity to handle this disruption? How is the technology affecting companies, and will certain businesses become obsolete? The thing is, we never realize the effects until they have happened. And we never realize just how dangerous this all could be until we feel that what we most value is threatened – safety.
Generative AI really can boost productivity. Back in the day, when you wanted a beautiful flyer or presentation created, you had to spend hours on it. Now there is a variety of tools powered by AI, giving you the possibility to create visually appealing materials at the click of a button and then fine-tune them as you wish. Why spend time researching and gathering resources when you can simply use Generative AI and have your first draft in minutes?
This is where the danger swoops in. Yes, AI can automate a lot of manual and tedious tasks that weren’t stimulating your brain anyhow. And that’s totally fine. By relying so much on Generative AI’s functionalities, people can become passive. They start accepting mediocre content as long as it helps them get the job done faster. They stop thinking critically and start complying with the mass distribution of information that can be biased and potentially harmful. Because who has time to cross-validate every assertion made by ChatGPT? Given the fact that the data it has been trained on only compiles information and research generated till 2021 and that it’s not providing any scientific sources when making statements, ChatGPT should be used cautiously and always as a supplement, never as the primary vehicle. By relying solely on AI to generate content, we risk becoming passive spectators, we risk dimming our creativity, our curiosity, and our eagerness to create and learn. And isn’t that what being a human is about after all?
From generating captivating stories and composing beautiful music to revolutionizing content creation across industries, the potential of generative AI is extraordinary. However, we must be cautious as we embrace this technology. While the possibilities are vast, we must consider the ethics, biases, and risks associated with relying too heavily on AI-generated content. By finding the right balance between human intelligence and the capabilities of machines, we can shape a future where generative AI becomes a powerful tool, enhancing our creativity and amplifying our capabilities. A future where human ingenuity intersects with machine innovation to build a better world. A future where possibilities are endless and utilized for a harmonious co-existence. A future we would be happy to step into.