TheSneakster
Well-known member
For those of you who imagine that LLM's are some sort of all-knowing, all-seeing infallible oracle of knowledge, I asked ChatGPT, "how does an LLM answer a question ?" and this was the response:
An Large Language Model (LLM) answers a question by predicting the most statistically likely sequence of words (or "tokens") that should follow your prompt. It doesn't "know" facts in the human sense; instead, it uses massive amounts of training data to recognize patterns in how humans structure information. [1, 2, 3, 4, 5]
Here is the step-by-step process of how it generates a response:
1. Tokenization and Embedding
When you ask a question, the model first breaks your text into small pieces called tokens (words or parts of words). These tokens are then converted into vector embeddings—numerical representations that help the model understand the mathematical relationship and "meaning" between different words. [6, 7, 8, 9, 10]
2. Contextual Analysis (The Attention Mechanism)
The model uses a transformer architecture with an attention mechanism to determine which parts of your question are most important. [5, 7]
During its initial training, the LLM read billions of pages of text to learn the "rhythm" of language. It uses this knowledge to calculate a probability distribution for the next token. [3, 5, 8, 11]
Modern LLMs use additional techniques to improve accuracy: [15, 16]
[1] https://www.reddit.com
[2] https://cloudx.com
[3] https://medium.com
[4] https://www.reddit.com
[5] https://autogenai.com
[6] https://www.reddit.com
[7] https://www.lesswrong.com
[8] https://www.youtube.com
[9] https://www.reddit.com
[10] https://quantumobile.com
[11] https://www.onyxgs.com
[12] https://news.ycombinator.com
[13] https://medium.com
[14] https://www.reddit.com
[15] https://www.ibm.com
[16] https://www.linkedin.com
[17] https://medium.com
[18] https://www.youtube.com
An Large Language Model (LLM) answers a question by predicting the most statistically likely sequence of words (or "tokens") that should follow your prompt. It doesn't "know" facts in the human sense; instead, it uses massive amounts of training data to recognize patterns in how humans structure information. [1, 2, 3, 4, 5]
Here is the step-by-step process of how it generates a response:
1. Tokenization and Embedding
When you ask a question, the model first breaks your text into small pieces called tokens (words or parts of words). These tokens are then converted into vector embeddings—numerical representations that help the model understand the mathematical relationship and "meaning" between different words. [6, 7, 8, 9, 10]
2. Contextual Analysis (The Attention Mechanism)
The model uses a transformer architecture with an attention mechanism to determine which parts of your question are most important. [5, 7]
- For example, in the question "What is the capital of France?", the model gives more "attention" to the tokens "capital" and "France" than to "is" or "the".
- This allows it to maintain focus on the core intent of your query. [5]
During its initial training, the LLM read billions of pages of text to learn the "rhythm" of language. It uses this knowledge to calculate a probability distribution for the next token. [3, 5, 8, 11]
- Step-by-Step Generation: It picks the most likely first word of the answer, then uses both your original question and that first word to predict the second word, and so on.
- No Internal "Truth": The model chooses words that frequently appeared together in its training data. If its data says "The capital of France is Paris" thousands of times, "Paris" becomes the mathematically highest-probability response. [1, 8, 12, 13, 14]
Modern LLMs use additional techniques to improve accuracy: [15, 16]
- Instruction Tuning: Models are specifically fine-tuned on question-and-answer pairs to learn that they should respond to a prompt rather than just continuing the text.
- Chain-of-Thought: By "thinking step-by-step," the model generates its own intermediate logic, which then serves as additional context to help it reach the final answer.
- Retrieval-Augmented Generation (RAG): Some systems first search external databases or the web to find relevant documents, then feed that specific information into the model to reduce "hallucinations" (made-up facts). [3, 4, 10, 12, 13, 15, 17, 18]
[1] https://www.reddit.com
[2] https://cloudx.com
[3] https://medium.com
[4] https://www.reddit.com
[5] https://autogenai.com
[6] https://www.reddit.com
[7] https://www.lesswrong.com
[8] https://www.youtube.com
[9] https://www.reddit.com
[10] https://quantumobile.com
[11] https://www.onyxgs.com
[12] https://news.ycombinator.com
[13] https://medium.com
[14] https://www.reddit.com
[15] https://www.ibm.com
[16] https://www.linkedin.com
[17] https://medium.com
[18] https://www.youtube.com

