如何在Amazon Personalize中配置超参数启用HPO及解决相关报错

核心疑问 #

是否需要同时在algorithmHyperParameters和algorithmHyperParameterRanges中指定超参数？若是，是否需在algorithmHyperParameters中指定单个字符串值，在algorithmHyperParameterRanges中指定对应范围（如整数型超参数的数值范围）？

报错场景（以Similar-Items配方为例） #

Similar-Items配方包含整数型超参数item_id_hidden_dimension，以下两种配置方式均触发相同报错：

An error occurred (InvalidInputException) when calling the CreateSolution operation: Provide a hyperparameter that is used in the algorithm: arn:aws:personalize:::algorithm/aws-similar-items

场景1：仅配置algorithmHyperParameterRanges

配置代码：

"solution_config": {
    "algorithmHyperParameters": {},
    "hpoConfig": {
        "algorithmHyperParameterRanges": {
            "integerHyperParameterRanges": [
                {
                    "name": "item_id_hidden_dimension",
                    "minValue": 30,
                    "maxValue": 200
                }
            ],
            "categoricalHyperParameterRanges": [],
            "continuousHyperParameterRanges": []
        },
        "hpoResourceConfig": {
            "maxNumberOfTrainingJobs": "4",
            "maxParallelTrainingJobs": "2"
        }
    }
}

场景2：同时配置algorithmHyperParameters和algorithmHyperParameterRanges

配置代码：

"solution_config": {
    "algorithmHyperParameters": {
        "item_id_hidden_dimension": "100"
    },
    "hpoConfig": {
        "algorithmHyperParameterRanges": {
            "integerHyperParameterRanges": [
                {
                    "name": "item_id_hidden_dimension",
                    "minValue": 30,
                    "maxValue": 200
                }
            ],
            "categoricalHyperParameterRanges": [],
            "continuousHyperParameterRanges": []
        },
        "hpoResourceConfig": {
            "maxNumberOfTrainingJobs": "4",
            "maxParallelTrainingJobs": "2"
        }
    }
}

内容的提问来源于stack exchange，提问作者shaila309