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Introduction to Large Language Models

Types of Language Models

Language Models

Language models are computer programs designed to understand and generate human language. They are used in a wide variety of applications, including speech recognition, machine translation, and chatbots. There are several types of language models, each with its strengths and weaknesses.

N-gram Model

The simplest type of language model is the n-gram model. This model predicts the probability of the next word in a sentence based on the previous n-1 words. For example, a bigram model would predict the probability of the next word given the previous word. N-gram models are relatively easy to build and work well for simple tasks, but they struggle with long-term dependencies and complex sentence structures.

Recurrent Neural Network (RNN)

A more sophisticated type of language model is the recurrent neural network (RNN). This model uses a neural network to learn patterns in language data and can handle long-term dependencies. RNNs have been used for tasks such as speech recognition and machine translation, but they can be slow to train and require large amounts of data.

Transformer Models

Recently, transformer models have become popular for language modeling. These models use an attention mechanism to allow the model to focus on different parts of the input sequence. This has led to significant improvements in language modeling performance, and transformer-based models such as GPT-3 have set new benchmarks for language generation and understanding.

Overall, the choice of language model depends on the specific application and the available data. A simple n-gram model may be sufficient for some tasks, while a transformer-based model may be necessary for others.

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