问题描述
我需要帮助解决以下问题。 我正在尝试将我的 csv 数据提供给我的第一层,即卷积 1d,但它显示
输入 0 与层 conv1d_Conv1D1 不兼容:预期 ndim=3,发现 ndim=2
这是我的代码
//move the tfjs_binding.node file in build-tmp-napi-v7/Release folder to build-tmp-napi-v7 folder will solve the problem.
const dfd = require("danfojs-node");
const tf = require("@tensorflow/tfjs-node");
var petData;
const TIME_STEPS = (24 * 60) / 60;
console.log("start");
var model = tf.sequential();
model.add(
tf.layers.conv1d({
filters: 3,kernelSize: 3,inputShape:[1]
})
);
// model.add(tf.layers.dropout({ rate: 0.2 }));
// model.add(
// tf.layers.conv1d({
// filters: 16,// kernelSize: 7,// padding: "same",// strides: 2,// activation: "relu",// })
// );
// model.add(
// tf.layers.conv1d({
// filters: 16,// })
// );
// model.add(tf.layers.dropout({ rate: 0.2 }));
// model.add(
// tf.layers.conv1d({
// filters: 32,// })
// );
// model.add(
// tf.layers.conv1d({
// filters: 1,// })
// );
model.compile({
optimizer: tf.train.adam((learningRate = 0.001)),loss: tf.losses.meanSquaredError,});
model.summary();
console.log("model created.");
dfd
.read_csv("./petTempData.csv",(chunk = 10000))
.then((df) => {
let encoder = new dfd.LabelEncoder();
let cols = ["Date","Time"];
cols.forEach((col) => {
encoder.fit(df[col]);
enc_val = encoder.transform(df[col]);
df.addColumn({ column: col,value: enc_val });
});
petData = df.iloc({ columns: [`1`] });
yData = df["Temperature"];
// let scaler = new dfd.MinMaxScaler();
// scaler.fit(petData);
// petData = scaler.transform(petData);
// petData = petData.tensor.expandDims(-1);
// const data = petData.tensor.reshape([24,2,1]);
console.log(petData.shape);
model.fit(petData.tensor,yData.tensor,{
epochs: 10,batchSize: 4,// validationSplit: 0.01,callbacks: tf.callbacks.earlyStopping({
monitor: "loss",patience: "5",mode: "min",}),});
})
.catch((err) => {
console.log(err);
});
这是我的 csv 原始文件
Date,Time,Temperature
31-12-2020,01:30,36.6
31-12-2020,02:30,36.7
31-12-2020,03:30,04:30,36.5
31-12-2020,05:30,36.8
31-12-2020,06:30,07:30,08:30,09:30,10:30,11:30,12:30,13:30,14:30,15:30,36.9
31-12-2020,16:30,17:30,18:30,19:30,20:30,21:30,22:30,23:30,36.5,
我尝试重塑我的输入,并 expandDims 但它们都不起作用。 非常感谢任何解决方案!
解决方法
conv1d
层需要一个dim 2 的inputShape,因此,inputShape 需要是[a,b]
(带有a,b 正整数)。
model = tf.sequential();
model.add(
tf.layers.conv1d({
filters: 3,kernelSize: 1,inputShape:[1,3]
})
);
model.predict(tf.ones([1,1,3])).print()