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Every agent that has a knowledge base and an inference system is known as a knowledge-based agent. The knowledge base contains all the information the agent has. This information can either be the data that is embedded into the agent in prior while its manufacturing or it can be the knowledge that the agent had gained through the experiences. In the knowledge-based agent, all the decision are taken in accordance with the data present in its knowledge base.

具有知識庫和推理系統的每個代理都稱為基于知識的代理。 知識庫包含代理商擁有的所有信息。 該信息可以是在制造代理之前預先嵌入到代理中的數據，也可以是代理通過經驗獲得的知識。 在基于知識的代理中，所有決策都是根據其知識庫中存在的數據做出的。

知識主體的水平 (Levels of knowledge-based agent)

The knowledge-based agent can be described using three levels. These are:

可以使用三個級別來描述基于知識的代理。 這些是：

Knowledge level

知識水平

Logical level

邏輯層次

Implementation level

實施水平

1)知識水平 (1) Knowledge level)

This is the basic and the most abstract level in a knowledge-based agent. This level describes the agent by what it knows, i.e. through its knowledge base. In this level, the information that the agent has, its goals and the utility are defined.

這是基于知識的代理中的基本和最抽象的級別。 此級別通過其所了解的內容(即通過其知識庫)描述代理。 在此級別，定義了代理具有的信息，其目標和效用。

Example:

例：

A house cleaning agent knows where the mop is and where the floor is and where the cleaning material like the soap and detergents are kept. All this is defined in the knowledge level.

房屋清潔劑知道拖把在哪里，地板在哪里以及清潔材料(如肥皂和清潔劑)的存放位置。 所有這些都在知識級別中定義。

2)邏輯層次 (2) Logical level)

In the logical level, the raw and discrete information which is present in the knowledge level is encoded into sentences. In simple words, the agent in this level derives the logic out of the knowledge base according to the problem. It selects the required blocks of information and combines them meaningfully so as a decision could be made.

在邏輯級別，將知識級別中存在的原始信息和離散信息編碼為句子。 簡而言之，此級別的主體根據問題從知識庫中導出邏輯。 它選擇所需的信息塊并將其有意義地組合在一起，以便做出決定。

Example:

例：

The house cleaning agent on getting all the information then checks and finds the place which is dirty and should be cleaned.

然后，房屋清潔劑將獲取所有信息，然后檢查并找到骯臟的地方并應清潔。

3)實施水平 (3) Implementation level)

This is the final layer of the knowledge-based agent. In the implementation level, the logic which the agent has derived in the logical level is brought to implementation. This layer deals with the physical representation of the sentences.

這是基于知識的代理的最后一層。 在實現級別中，將代理在邏輯級別中派生的邏輯應用于實現。 該層處理句子的物理表示。

Example:

例：

The cleaning agent after finding the place to clean finally takes action and cleans the dirt on the floor and as a result, the agent gets clean floor which is the goal state that the agent is designed to achieve.

找到清潔場所后，清潔劑最終會采取行動并清潔地板上的污垢，結果清潔劑便會清潔地板，這是清潔劑旨在達到的目標狀態。

翻譯自: https://www.includehelp.com/ml-ai/knowledge-based-agent-levels-in-artificial-intelligence.aspx

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