Agents Overview
Great write-up on Agents by Chip.
Here are my takeaways:
🤖 Agents Overview
An AI agent is made up of both the environment it operates in (e.g., a game, the internet, or computer system) and the set of actions it can perform through its available tools. This dual definition is fundamental to understanding how agents work.
👨💻 Agent Example
The figure shows an example of an agent built on top of GPT-4. The environment is the computer which has access to a terminal and filesystem. The set of action include navigate, searching files, viewing files, etc.
🧰 Importance of Tools
Tools allow agents to both perceive their environment (through read actions) and modify it (through write actions). Adding appropriate tools can dramatically expand what an agent can do, from performing calculations to accessing real-time information.
💡 Tool Selection
More tools give agents more capabilities but also make it harder for them to use them effectively. Finding the right tool inventory requires careful experimentation and analysis of usage patterns.
🧩 Planning
Effective agents require robust planning capabilities to break down complex tasks into manageable steps. This planning should ideally be decoupled from execution to allow for validation before running potentially costly or time-consuming operations.
📍 Foundation Models Can Act as Planners
While there's debate about whether LLMs can truly plan, they can be effective components of planning systems, especially when augmented with appropriate tools and reflection capabilities.
⛓️ Multi-Agent Systems
Most practical agent implementations are multi-agent systems, with different components handling plan generation, validation, and execution. This separation of concerns allows for better specialization and error handling.
🎛️ Control Flows
Agent plans can involve various control flows beyond simple sequential execution, including parallel execution, conditional statements, and loops. However, more complex control flows are harder to generate and execute correctly.
💭 Reflection and Error Correction
While not strictly required, reflection capabilities (the ability to evaluate progress and correct mistakes) significantly improve agent performance. This can be implemented through self-critique or separate evaluation components.
❌ Failure Modes
Agents can fail in multiple ways, including planning failures (invalid tools or parameters), tool execution failures (incorrect outputs), and efficiency failures (taking too long or using too many resources).
📈 Evaluation
Proper agent evaluation needs to consider multiple metrics, including success rate, efficiency, cost, and time taken. This should be done across different tasks and compared against appropriate baselines.
Full blog post: https://lnkd.in/egwCKD3J
If you want to take it a step further, I would highly recommend my new course on AI agents: https://lnkd.in/e5-c6f45