Monday 22 January 2024

AI Fundamentals Part 4 : Introduction to LLMs(Large Language Models)


What is Large Language Models (LLMs)?


Artificial Intelligence (AI) is the simulation of human intelligence in machines that are programmed to think and learn. Large Language Models (LLMs) are a type of AI that processes, understands, and generates human-like text based on vast datasets.

History of Large Language Models



- LLMs have a fascinating history that dates back to the 1960s with the creation of the first-ever chatbot, Eliza.
- Over the years, several significant innovations have propelled the field of LLMs forward. One such innovation was the introduction of Long Short-Term Memory (LSTM) networks in 1997, which allowed for the creation of deeper and more complex neural networks capable of handling more significant amounts of data.
- Another pivotal moment came with Stanford’s CoreNLP suite, which was introduced in 2010. The suite provided a set of tools and algorithms that helped researchers tackle complex NLP tasks such as sentiment analysis and named entity recognition.
- In 2011, Google Brain was launched, providing researchers with access to powerful computing resources and data sets along with advanced features such as word embeddings, allowing NLP systems to better understand the context of words.
- Google Brain’s work paved the way for massive advancements in the field, such as the introduction of Transformer models in 2017.
- The transformer architecture enabled the creation of larger and more sophisticated LLMs such as OpenAI’s GPT-3 (Generative Pre-Trained Transformer) which served as the foundation for ChatGPT and a legion of other incredible AI-driven applications.

In recent years, solutions such as Hugging Face and BARD have also contributed significantly to the advancement of LLMs by creating user-friendly frameworks and tools that enable researchers and developers to build their own LLMs.

Types of Large Language Models(LLMs)


Three major categories can be used to categorize large language models (LLMs): multimodal, fine-tuning, and pre-training models.
- Pre-training models: with large data sets, such as GPT-3/GPT-3.5, T5, and XLNet, are able to acquire a broad knowledge base of linguistic patterns and structures. These models are quite good at producing grammatically sound and coherent content on a wide range of subjects. They serve as a foundation for additional instruction and task-specific fine-tuning.
- Fine-tuning models: models such as ALBERT, RoBERTa, and BERT are trained beforehand on a big dataset and then adjusted for a particular job on a smaller dataset. For applications such as text classification, question answering, and sentiment analysis, these models work incredibly well. When task-specific language models are required in industrial applications, they are frequently employed.
- Multimodal models: to produce more reliable language models, models such as CLIP and DALL-E mix text with additional modalities like images or video. These models are able to provide text descriptions of images or even produce images from textual descriptions since they are able to comprehend the links between images and words.



Applications of Large Language Models


Large Language Models (LLMs) have demonstrated remarkable performance in a wide range of natural language processing (NLP) tasks like :
- Content Generation: Articles, stories, code.
- Translation: Converting text from one language to another.
- Customer Service: Automated responses and support bots.

Sunday 21 January 2024

AI Fundamentals Part 3 : Generative AI (GenAI)


What is Generative AI?

Generative AI, also referred to as "GenAI" is a technology that lets users enter different kinds of prompts to create new media, including text, photos, movies, sounds, code, and 3D designs.
As generative AI is trained on additional data, it develops. It uses artificial intelligence (AI) models and algorithms that are trained on big, unlabeled data sets, which demand sophisticated mathematics and a lot of processing power to produce. These sets of data teach the AI to forecast results in ways that resemble actions or creations made by humans.

How does generative AI work?

Neural networks are used by generative AI models to find patterns in current data in order to produce new material. Organizations can build foundation models from sizable, unlabeled data sets by training them on unsupervised and semi-supervised learning methodologies. This effectively creates a foundation for AI systems to execute tasks.
Foundation models, which power tools like ChatGPT, DALL-E, and more, include LLMs, GANs, VAEs, and Multimodal. ChatGPT allows users to create stories in response to prompts by utilizing data from GPT-3. Stable Diffusion is another foundation model that lets people create realistic visuals from text input.

How to Evaluate Generative AI Models?

Three essential elements are needed for a generative AI model to be successful:
- Quality: Having high-quality generation outputs is essential, particularly for apps that engage directly with consumers. For instance, low-quality speech is hard to understand when it comes to speech creation. Similar to this, while creating photographs, the intended results should be identical to natural photos in terms of appearance.
- Diversity: Without compromising the quality of its generation, a good generative model captures the minority modes in its data distribution. As a result, the trained models' undesirable biases are lessened.
- Speed: In order to be used in content development workflows, many interactive apps, including real-time image editing, require quick generating.


Generative AI use cases


These use cases could inspire you to think of innovative ways that generative AI can help you and your company after you've determined which AI generator best meets your requirements.
- Writing or refining material by creating a draft copy with a particular length or style.
- Including subtitles or translating movies, TV shows, and other stuff into several languages.
- Writing summaries for term papers, resumes, briefings, and more.
- Getting a generic code to work with and modify.
- Condensing reports, emails, and articles.
- Enhancing videos for explanations or demonstrations.
- Composing in a certain style or tone.