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.

AI Fundamentals Part 2 : Introduction to NLP (Natural Language Processing)


What is Natural Language Processing (NLP)?


Natural Language Processing (NLP) is a branch of Artificial Intelligence (AI) that helps computers understand, interpret and manipulate human language.

NLP involves the application of computational techniques to the analysis and synthesis of natural language and speech.

To analyze natural language and determine the true meaning of text or audio data, it combines machine learning, statistical, and deep learning models with computational linguistics—ruled-based modeling of natural language. It even comprehends the sentiment and intention of the writer or speaker.

NLP processes text and voice data, extracts meaning, determines intent and sentiment, and forms an input or response using computational linguistics, artificial intelligence, and machine learning. Since humans communicate in binary (1 and 0), computers are unable to comprehend or interpret text or words in the same way. As a result, NLP gives computers the ability to comprehend, mimic, and react to people intelligently.

Why is Natural Language Processing important?

Natural language processing is crucial because it aids in the analysis and interpretation of enormous amounts of data. It assists in processing both text and voice data, comprehends intents and feelings, and even aids in the extraction of important insights from the data.

The significance of natural language processing (NLP) lies in its ability to organize unstructured data and lessen ambiguity in natural language. It even assists companies in better organizing their data for their own benefit.

How does Natural Language Processing (NLP) work?

NLP tools use text vectorization to turn text into a machine-readable format. Machine learning algorithms are then fed training data and predicted outputs (tags) to teach machines to associate a given input with its associated output. Machines utilize statistical analysis techniques to create their own "knowledge bank" and identify which qualities best describe the texts before predicting outcomes for unknown data.

NLP software carries out three primary tasks:
- It starts by dissecting the language (text or voice) into its basic components.
- It then attempts to determine the relationships between these pieces of information.
- Lastly, it tries to explain these relationships.

Each of these operations, of course, involves a great deal more stages. Language proficiency is necessary, as well as expertise in algorithms, statistics, and programming.

What are the applications of Natural Language Processing?


- Sentiment analysis is the use of NLP techniques to extract subjective information from text, often to determine the attitude of a speaker or writer.
- Machine translation involves the use of software to translate text or speech from one language to another.
- Chatbots are AI programs that can conduct conversations with human users through text or voice interfaces, often using NLP.

Wednesday 10 January 2024

AI Fundamentals Part 1: Introduction to AI


What is AI?

Artificial Intelligence (AI) refers to the simulation of human intelligence in machines that are programmed to think and learn like humans.

History of AI

The concept of artificial intelligence dates back to ancient civilizations, but the term "AI" was formally coined in 1956 at the Dartmouth Conference.
AI can throw around some intimidating terms, so let’s break down a few key jargon :

Types of AI

AI can be categorized into Narrow AI (or Weak AI), which is designed for specific tasks, and General AI (or Strong AI), with human-like cognitive abilities.
Note: Chat-GPT is not classified as ASI or Strong AI. A sophisticated illustration of Narrow or Weak AI is GPT-4. Please feel free to get this confirmed from ChatGPT directly.

Now, What is Machine Learning?


Machine Learning is a subset of AI that involves the use of data and algorithms to imitate the way humans learn, gradually improving accuracy.

Types of ML

There are three main types of machine learning: supervised, unsupervised, and reinforcement learning.

Supervised Learning

Supervised learning involves learning a function that maps an input to an output based on example input-output pairs. It's like “Teach me what to learn”.

Unsupervised Learning

Unsupervised learning involves learning patterns from untagged data, used for clustering, association, and dimensionality reduction tasks. It's like “I will find what to learn”.

Reinforcement Learning

Reinforcement Learning is a technique that teaches computer programs to make decisions in order to produce the best possible outcomes. It's like “I’ll learn from my mistakes at every step (Hit & Trial!)”.

Now, What is Deep Learning?


Deep Learning is a subset of machine learning that uses neural networks with many layers (deep nets) to learn from data.

Neural Networks

Neural networks are computing systems vaguely inspired by the biological neural networks that constitute animal brains.

Convolutional Neural Networks (CNNs)

CNNs are deep neural networks used primarily to classify images, cluster them by similarity, and perform object recognition within scenes.

Recurrent Neural Networks (RNNs)

RNNs are networks with loops in them, allowing information to persist, making them ideal for sequence prediction tasks.

AI vs. ML vs. DL