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DimensionReducerFunction[…]

表示由 DimensionReduction 生成的函数，将数据投影到低维近似流形.

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DimensionReducerFunction

DimensionReducerFunction[…]

表示由 DimensionReduction 生成的函数，将数据投影到低维近似流形.

更多信息和选项

范例

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基本范例  (3)

从向量列表生成 DimensionReducerFunction：

Wolfram Language code: dr = DimensionReduction[{{1, 2, 3}, {2, 3, 5}, {3, 5, 8}, {4, 5, 8.5}}]

将该降维函数用于新的向量：

Wolfram Language code: dr[{6, 7, 14}]

将该降维函数用于新的向量列表：

Wolfram Language code: dr[{{6, 7, 14}, {5, 6, 11}, {1, 3, 4}}]

向量可以含有缺失值：

Wolfram Language code: dr[{{6, Missing[], 14}, {5, 6, Missing[]}, {Missing[], 3, 4}}]

从向量列表生成 DimensionReducerFunction：

Wolfram Language code: dr = DimensionReduction[{{Missing[], 2, 3}, {2, 3, 5}, {3, Missing[], 8}, {4, 5, 8.5}}]

将该降维函数用于新的向量列表：

Wolfram Language code: newvectors = {{6, 7, 14}, {5, 6, 11}, {1, 3, Missing[]}};
Wolfram Language code: reduced = dr[newvectors]

试着从降维向量重建原始向量：

Wolfram Language code: dr[reduced, "OriginalVectors"]

重建向量可以直接从原始向量获得：

Wolfram Language code: dr[newvectors, "ReconstructedVectors"]

生成混合类型数据集的降维函数：

Wolfram Language code: dr = DimensionReduction[{{1.4, "A"}, {1.5, "A"}, {2.3, "B"}, {5.4, "B"}}]

降低新范例的维数：

Wolfram Language code: dr[{2.4, "A"}]

范围  (1)

从向量列表生成 DimensionReducerFunction：

Wolfram Language code: dr = DimensionReduction[{{1, 2, 3}, {2, 3, 5}, {3, 5, 8}, {4, 5, 8.5}}]

使用该降维函数对其它向量的缺失值进行插补：

Wolfram Language code: newvectors = {{6, 7, Missing[]}, {5, Missing[], 11}};
Wolfram Language code: dr[newvectors, "ImputedVectors"]
Wolfram Research (2015)，DimensionReducerFunction，Wolfram 语言函数，https://reference.wolfram.com/language/ref/DimensionReducerFunction.html （更新于 2018 年）.

文本

Wolfram Research (2015)，DimensionReducerFunction，Wolfram 语言函数，https://reference.wolfram.com/language/ref/DimensionReducerFunction.html （更新于 2018 年）.

CMS

Wolfram 语言. 2015. "DimensionReducerFunction." Wolfram 语言与系统参考资料中心. Wolfram Research. 最新版本 2018. https://reference.wolfram.com/language/ref/DimensionReducerFunction.html.

APA

Wolfram 语言. (2015). DimensionReducerFunction. Wolfram 语言与系统参考资料中心. 追溯自 https://reference.wolfram.com/language/ref/DimensionReducerFunction.html 年

BibTeX

@misc{reference.wolfram_2026_dimensionreducerfunction, author="Wolfram Research", title="{DimensionReducerFunction}", year="2018", howpublished="\url{https://reference.wolfram.com/language/ref/DimensionReducerFunction.html}", note=[Accessed: 04-September-2026]}

BibLaTeX

@online{reference.wolfram_2026_dimensionreducerfunction, organization={Wolfram Research}, title={DimensionReducerFunction}, year={2018}, url={https://reference.wolfram.com/language/ref/DimensionReducerFunction.html}, note=[Accessed: 04-September-2026]}