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Foundation Model
定義
A foundation model is a large AI model trained on broad, general-purpose data at scale that can be adapted to many downstream tasks — through prompting, retrieval, or fine-tuning — rather than being built for one narrow job.
How it works
Foundation models are pre-trained on enormous, diverse datasets, giving them broad general capabilities. Instead of training a new model for each task, teams adapt one foundation model to many uses — summarization, classification, chat, code — via prompting, RAG, or fine-tuning.
Large language models are the best-known foundation models, but the term also covers multimodal models that handle images, audio, and other data alongside text.
Why it matters for support
Foundation models are the general-purpose engines that AI support tools build on. A support platform typically doesn't train its own model — it adapts a foundation model with your knowledge and tools, so the quality of the underlying model plus how well it's grounded determines the results.
よくある質問
Is a large language model a foundation model?
Yes — an LLM is a foundation model for text. "Foundation model" is the broader term and also includes multimodal models that handle images or audio.
What is the difference between a foundation model and a fine-tuned model?
A foundation model is the broad, general base; a fine-tuned model is that base further trained on task-specific data to specialize its behavior for a particular use.
関連用語
Large Language Model (LLM)
A large language model (LLM) is a neural network trained on vast amounts of text to predict and generate language, enabling it to understand questions, summarize, classify, and write human-like responses..
Fine-Tuning
Fine-tuning is the process of further training a pre-trained language model on a smaller, task-specific dataset so it adapts to a particular domain, style, or behavior — updating the model's weights rather than just its instructions..
Generative AI
Generative AI is a class of AI that creates new content — text, images, code, or audio — by learning patterns from training data, rather than only classifying or predicting from existing inputs..
Transformer Model
A transformer model is a neural network architecture that processes an entire sequence of text at once using an attention mechanism to weigh how much each word relates to every other word, and it's the foundation of nearly every modern large language model..
Machine Learning
Machine learning is a branch of AI in which systems learn patterns from data to make predictions or decisions, rather than following rules a programmer wrote by hand..
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Macha は既に運用中のヘルプデスク (Zendesk、Freshdesk、Front、Intercom、Gorgias) の上に載る AI エージェント層です。
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