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移动端AI与ML应用开发:基于iOS和Android
book

移动端AI与ML应用开发:基于iOS和Android

by Laurence Moroney
January 2023
Intermediate to advanced
288 pages
6h 6m
Chinese
China Machine Press
Content preview from 移动端AI与ML应用开发:基于iOS和Android
182
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10
包装代码
Android 数据
例如
位图
Android 数据
例如
字符串
元数据
张量 张量模型
10-1
:在
Android
应用程序中使用模型的高级架构
首先,让我们看看模型的输入。它不像输入一个数字然后得到一个数字那么简单。对
于输入,模型需要一个 NumPy 数组,但 NumPy Android 中不可用。值得庆幸的
是,你可以在数组中使用底层基本原始类型,并且在使用 Kotlin 时,解释器可以将
FloatArray
类型解析为浮点数的原始数组。因此,你可以使用此代码,其中
userVal
是输入到模型的值:
var inputVal: FloatArray = floatArrayOf(userVal)
然后,一旦模型提供了推理,它就会将其作为字节流返回。作为 Android 开发人员,你
必须意识到这 4 个字节代表一个浮点数,并且你必须将它们转换为浮点数。请记住,模
型的最原始形式的输出不是浮点数,由你决定将原始字节重新解释为浮点数:
var outputVal: ByteBuffer = ByteBuffer.allocateDirect(4)
outputVal.order(ByteOrder.nativeOrder())
tflite.run(inputVal, outputVal)
outputVal.rewind()
var f:Float = outputVal.getFloat()
因此,在 Android 中使用模型时,你必须考虑这一点,当然对于更复杂的输入数据,如 ...
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Publisher Resources

ISBN: 9787111713081