server <- function(input, output, session) {
un_smp_new <- eventReactive(input$predict, {#jika tombol predict diklik, event reactive jalan
data.frame(
tahun = input$tahun,
status = input$status,
jumlah_peserta = input$jumlah_peserta,
bahasa_indonesia = input$bahasa_indonesia,
bahasa_inggris = input$bahasa_inggris,
matematika = input$matematika,
stringsAsFactors = FALSE
)
})
to_predict <- reactive({#saat un_smp_new muncul, proses ini mulai berjalan
req(un_smp_new())
un_smp_recipe %>%
prep() %>%
bake(un_smp_new())
})
ipa_prediction <- reactive({
req(to_predict())
predict(un_smp_rf, new_data = to_predict())
})
output$ipa_prediction <- renderUI({
wellPanel(
h4("Prediksi nilai ujian IPA kamu:"),
h1(strong(round(ipa_prediction(), digits = 2))),
h2(ifelse(ipa_prediction() >= 75,
"Selamat ya, calon Data Scientist nih! ;)",
"Tetap semangat ya! Ikut belajar di R Academy Batch selanjutnya yuk ;)")),
hr(),
em("Maaf ya saya bukan peramal, hanya seorang data scientist pengguna metode pemodelan Random Forest", icon("smile"))
)
})
}
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