multimodal AI models work
The World of Tokens Humans read sentences as words and meanings. Consider it like breaking down a sentence into manageable bits, which the AI then knows how to turn into numbers. “AI is amazing” might turn into tokens: → [“AI”, “ is”, “ amazing”] Or sometimes even smaller: [“A”, “I”, “ is”, “ ama”,Read more
The World of Tokens
- Humans read sentences as words and meanings.
- Consider it like breaking down a sentence into manageable bits, which the AI then knows how to turn into numbers.
- “AI is amazing” might turn into tokens: → [“AI”, “ is”, “ amazing”]
- Or sometimes even smaller: [“A”, “I”, “ is”, “ ama”, “zing”]
- Thus, each token is a small unit of meaning: either a word, part of a word, or even punctuation, depending on how the tokenizer was trained.
- Similarly, LLMs can’t understand sentences until they first convert text into numerical form because AI models only work with numbers, that is, mathematical vectors.
Each token gets a unique ID number, and these numbers are turned into embeddings, or mathematical representations of meaning.
But There’s a Problem Order Matters!
Let’s say we have two sentences:
- “The dog chased the cat.”
- “The cat chased the dog.”
They use the same words, but the order completely changes the meaning!
A regular bag of tokens doesn’t tell the AI which word came first or last.
That would be like giving somebody pieces of the puzzle and not indicating how to lay them out; they’d never see the picture.
So, how does the AI discern the word order?
An Easy Analogy: Music Notes
Imagine a song.
Each of them, separately, is just a sound.
Now, imagine if you played them out of order the music would make no sense!
Positional encoding is like the sheet music, which tells the AI where each note (token) belongs in the rhythm of the sentence.
Position Selection – How the Model Uses These Positions
Once tokens are labeled with their positions, the model combines both:
- What the word means – token embedding
- Where the word appears – positional encoding
These two signals together permit the AI to:
- Recognize relations between words: “who did what to whom”.
- Predict the next word, based on both meaning and position.
Why This Is Crucial for Understanding and Creativity
- Without tokenization, the model couldn’t read or understand words.
- Without positional encoding, the model couldn’t understand context or meaning.
Put together, they represent the basis for how LLMs understand and generate human-like language.
In stories,
- they help the AI track who said what and when.
- In poetry or dialogue, they serve to provide rhythm, tone, and even logic.
This is why models like GPT or Gemini can write essays, summarize books, translate languages, and even generate code-because they “see” text as an organized pattern of meaning and order, not just random strings of words.
How Modern LLMs Improve on This
Earlier models had fixed positional encodings meaning they could handle only limited context (like 512 or 1024 tokens).
But newer models (like GPT-4, Claude 3, Gemini 2.0, etc.) use rotary or relative positional embeddings, which allow them to process tens of thousands of tokens entire books or multi-page documents while still understanding how each sentence relates to the others.
That’s why you can now paste a 100-page report or a long conversation, and the model still “remembers” what came before.
Bringing It All Together
- A Simple Story Tokenization is teaching it what words are, like: “These are letters, this is a word, this group means something.”
- Positional encoding teaches it how to follow the order, “This comes first, this comes next, and that’s the conclusion.”
- Now it’s able to read a book, understand the story, and write one back to you-not because it feels emotions.
but because it knows how meaning changes with position and context.
Final Thoughts
If you think of an LLM as a brain, then:
- Tokenization is like its eyes and ears, how it perceives words and converts them into signals.
- Positional encoding is to the transformer like its sense of time and sequence how it knows what came first, next, and last.
Together, they make language models capable of something almost magical understanding human thought patterns through math and structure.
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How Multi-Modal AI Models Function On a higher level, multimodal AI systems function on three integrated levels: 1. Modality-S First, every type of input, whether it is text, image, audio, or video, is passed through a unique encoder: Text is represented in numerical form to convey grammar and meaniRead more
How Multi-Modal AI Models Function
On a higher level, multimodal AI systems function on three integrated levels:
1. Modality-S
First, every type of input, whether it is text, image, audio, or video, is passed through a unique encoder:
These are the types of encoders that take unprocessed data and turn it into mathematical representations that the model can process.
2. Shared
After encoding, the information from the various modalities is then projected or mapped to a common representation space. The model is able to connect concepts across representations.
For instance:
Such a shared space is essential to the model, as it allows the model to make connections between the meaning of different data types rather than simply handling them as separate inputs.
3. Cross-Modal Reasoning and Generation
The last stage of the process is cross-modal reasoning on the part of the model; hence, it uses multiple inputs to come up with outputs or decisions. It may involve:
Instead, state-of-the-art multi-modal models utilize sophisticated attention mechanisms that highlight the relevant areas of the inputs during the process of reasoning.
Importance of Multimodal AI Models
1. They Reflect Real-World Complexity
“The real world is multimodal.” This is because health and medical informatics, travel, and even human communication are all multimodal. This makes it easier for AI to handle information in such a way that it is processed in a way that human beings also do.
2. Increased Accuracy and Contextual Understanding
A single data source may be restrictive or inaccurate. Multimodal models utilize multiple inputs, making it less ambiguous and accurate than relying on one data source. For example, analyzing images and text information together is more accurate than analyzing only images or text information while diagnosing.
3. More Natural Human AI Interaction
Multimodal AIs allow more intuitive ways of communication, like talking while pointing at an object, as well as uploading an image file and then posing questions about it. As a result, AIs become more inclusive, user-friendly, and accessible, even to people who are not technologically savvy.
4. Wider Industry Applications
Multimodal models are creating a paradigm shift in the following:
5. Foundation for Advanced AI Capabilities
Multimodal AI is only a stepping stone towards more complex models, such as autonomous agents, and decision-making systems in real time. Models which possess the ability to see, listen, read, and reason simultaneously are far closer to full-fledged intelligence as opposed to models based on single modalities.
Issues and Concerns
Although they promise much, multimodal models of AI remain difficult to develop and resource-heavy. They demand extensive data and alignment of the modalities, and robust protection against problems of bias and trust. Nevertheless, work continues to increase efficiency and trustworthiness.
Conclusion
Multimodal AI models are a major milestone in the field of artificial intelligence. Through the incorporation of various forms of knowledge in a single concept, these models bring AI a step closer to human-style perception and cognition. While the relevance of these models mostly revolves around their effectiveness, they play a crucial part in making AI systems more relevant and real-world.
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