因此，我尝试阅读与code相关的简单Julia数组。我尝试了解一种lambda类型。
lambda = floatVar .* (Array_Int_3_A .^ 2 .+ Array_Int_3_B .^ 2 .+ Array_Int_3_C .^ 2);
会变成
lambda[i] = floatVar * (Array_Int_3_A[i]^2 + Array_Int_3_B[i]^2 + ...)
但是Array_Int_3_A是3个整数的数组，所以lambda也会是3个整数的数组吗？ Julia中是否有一些工具或实用程序来显示函数变量类型？顺便说一句，有没有一种工具可以显示使用.作为更传统的数组样式代码的代码？
答案 0 :(得分：2)
您可以通过h2o.init()
h2o.no_progress()
# y_train_processed_tbl is the target variable
# x_train_processed_tbl is the remaining data post dealing with Missing
# values
data_h2o <- as.h2o(bind_cols(y_train_processed_tbl, x_train_processed_tbl))
splits_h2o <- h2o.splitFrame(data_h2o, ratios = c(0.7, 0.15), seed = 1234)
train_h2o <- splits_h2o[[1]]
valid_h2o <- splits_h2o[[2]]
test_h2o <- splits_h2o[[3]]
y <- "TARGET"
x <- setdiff(names(train_h2o), y)
automl_models_h2o <- h2o.automl(x = x,y = y,
training_frame = train_h2o, validation_frame = valid_h2o,
leaderboard_frame = test_h2o,
max_runtime_secs = 90
)
automl_leader <- automl_models_h2o@leader
# Error in performance_h2o
performance_h2o <- h2o.performance(automl_leader, newdata = test_h2o)
ERROR: Unexpected HTTP Status code: 404 Not Found
water.exceptions.H2OKeyNotFoundArgumentException
[1] "water.exceptions.H2OKeyNotFoundArgumentException: Object 'dummy' not
found in function: predict for argument: model"
[2] " water.api.ModelMetricsHandler.score(ModelMetricsHandler.java:235)"
[3] " sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)"
[4] " sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)"
[5] " sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)"
[6] " java.lang.reflect.Method.invoke(Unknown Source)"
[7] " water.api.Handler.handle(Handler.java:63)"
[8] " water.api.RequestServer.serve(RequestServer.java:451)"
[9] " water.api.RequestServer.doGeneric(RequestServer.java:296)"
[10] " water.api.RequestServer.doPost(RequestServer.java:222)"
[11] " javax.servlet.http.HttpServlet.service(HttpServlet.java:755)"
[12] " javax.servlet.http.HttpServlet.service(HttpServlet.java:848)"
[13] " org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:684)"
[14] " org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:503)"
[15] " org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1086)"
[16] " org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:429)"
[17] " org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1020)"
[18] " org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:135)"
[19] " org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)"
[20] " org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)"
[21] " water.JettyHTTPD$LoginHandler.handle(JettyHTTPD.java:197)"
[22] " org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:154)"
[23] " org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:116)"
[24] " org.eclipse.jetty.server.Server.handle(Server.java:370)"
[25] " org.eclipse.jetty.server.AbstractHttpConnection.handleRequest(AbstractHttpConnection.java:494)"
[26] " org.eclipse.jetty.server.BlockingHttpConnection.handleRequest(BlockingHttpConnection.java:53)"
[27] " org.eclipse.jetty.server.AbstractHttpConnection.content(AbstractHttpConnection.java:982)"
[28] " org.eclipse.jetty.server.AbstractHttpConnection$RequestHandler.content(AbstractHttpConnection.java:1043)"
[29] " org.eclipse.jetty.http.HttpParser.parseNext(HttpParser.java:865)"
[30] " org.eclipse.jetty.http.HttpParser.parseAvailable(HttpParser.java:240)"
[31] " org.eclipse.jetty.server.BlockingHttpConnection.handle(BlockingHttpConnection.java:72)"
[32] " org.eclipse.jetty.server.bio.SocketConnector$ConnectorEndPoint.run(SocketConnector.java:264)"
[33] " org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:608)"
[34] " org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:543)"
[35] " java.lang.Thread.run(Unknown Source)"
Error in .h2o.doSafeREST(h2oRestApiVersion = h2oRestApiVersion, urlSuffix =
page, :
ERROR MESSAGE:
Object 'dummy' not found in function: predict for argument: model
获得任何Julia对象o的类型。
typeof(o)在您的代码行中，所有圆点仅表示“逐个应用操作”。因此，类型（和大小）不会改变。
此外，在这里准确地说，help?> typeof
search: typeof typejoin TypeError
typeof(x)
Get the concrete type of x.
Examples
≡≡≡≡≡≡≡≡≡≡
julia> a = 1//2;
julia> typeof(a)
Rational{Int64}
julia> M = [1 2; 3.5 4];
julia> typeof(M)
Array{Float64,2}
的含义不是“ 3个整数的数组”，而是“ 3维数组”，在这两个维中的任何一个都可以具有任意范围。要获取数组的范围或大小，可以使用Array{Int,3}。