TopK
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Simpan dan kategorikan konten berdasarkan preferensi Anda.
Menemukan nilai dan indeks elemen terbesar `k` untuk dimensi terakhir.
Jika masukannya adalah vektor (peringkat-1), temukan `k` entri terbesar dalam vektor dan keluarkan nilai dan indeksnya sebagai vektor. Jadi `nilai[j]` adalah entri terbesar ke-`j` dalam `input`, dan indeksnya adalah `indeks[j]`.
Untuk matriks (masing-masing masukan dengan peringkat lebih tinggi), hitung entri `k` teratas di setiap baris (masing-masing vektor sepanjang dimensi terakhir). Dengan demikian,
nilai.bentuk = indeks.bentuk = masukan.bentuk[:-1] + [k]
Jika dua elemen sama, elemen dengan indeks lebih rendah akan muncul terlebih dahulu.
Konstanta
| Rangkaian | OP_NAME | Nama operasi ini dikenal dengan mesin inti TensorFlow |
Metode Warisan
Dari kelas java.lang.Object | boolean | sama dengan (Objek arg0) |
| Kelas terakhir<?> | dapatkan Kelas () |
| ke dalam | Kode hash () |
| kekosongan terakhir | memberitahu () |
| kekosongan terakhir | beri tahuSemua () |
| Rangkaian | keString () |
| kekosongan terakhir | tunggu (arg0 panjang, int arg1) |
| kekosongan terakhir | tunggu (argumen panjang0) |
| kekosongan terakhir | Tunggu () |
Konstanta
String akhir statis publik OP_NAME
Nama operasi ini dikenal dengan mesin inti TensorFlow
Nilai Konstan: "TopKV2"
Metode Publik
Metode pabrik untuk membuat kelas yang membungkus operasi TopK baru.
Parameter
| cakupan | ruang lingkup saat ini |
|---|
| memasukkan | 1-D atau lebih tinggi dengan dimensi terakhir setidaknya `k`. |
|---|
| k | 0-D. Jumlah elemen teratas yang harus dicari sepanjang dimensi terakhir (sepanjang setiap baris matriks). |
|---|
| pilihan | membawa nilai atribut opsional |
|---|
Indeks `nilai` dalam dimensi terakhir `input`.
TopK.Options statis publik diurutkan (diurutkan Boolean)
Parameter
| diurutkan | Jika benar, elemen `k` yang dihasilkan akan diurutkan berdasarkan nilai dalam urutan menurun. |
|---|
Nilai keluaran <T> publik ()
Elemen terbesar `k` sepanjang setiap irisan dimensi terakhir.
Kecuali dinyatakan lain, konten di halaman ini dilisensikan berdasarkan Lisensi Creative Commons Attribution 4.0, sedangkan contoh kode dilisensikan berdasarkan Lisensi Apache 2.0. Untuk mengetahui informasi selengkapnya, lihat Kebijakan Situs Google Developers. Java adalah merek dagang terdaftar dari Oracle dan/atau afiliasinya.
Terakhir diperbarui pada 2025-07-26 UTC.
[null,null,["Terakhir diperbarui pada 2025-07-26 UTC."],[],[],null,["# TopK\n\npublic final class **TopK** \nFinds values and indices of the \\`k\\` largest elements for the last dimension.\n\n\nIf the input is a vector (rank-1), finds the \\`k\\` largest entries in the vector\nand outputs their values and indices as vectors. Thus \\`values\\[j\\]\\` is the\n\\`j\\`-th largest entry in \\`input\\`, and its index is \\`indices\\[j\\]\\`.\n\n\nFor matrices (resp. higher rank input), computes the top \\`k\\` entries in each\nrow (resp. vector along the last dimension). Thus,\n\n\nvalues.shape = indices.shape = input.shape\\[:-1\\] + \\[k\\]\n\n\nIf two elements are equal, the lower-index element appears first.\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n\u003cbr /\u003e\n\n### Nested Classes\n\n|-------|---|---|------------------------------------------------------------------------------|\n| class | [TopK.Options](/jvm/api_docs/java/org/tensorflow/op/nn/TopK.Options) || Optional attributes for [TopK](/jvm/api_docs/java/org/tensorflow/op/nn/TopK) |\n\n### Constants\n\n|--------|-----------------------------------------------------------------|---------------------------------------------------------|\n| String | [OP_NAME](/jvm/api_docs/java/org/tensorflow/op/nn/TopK#OP_NAME) | The name of this op, as known by TensorFlow core engine |\n\n### Public Methods\n\n|--------------------------------------------------------------------------------------------------------------------------------------------------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| static \\\u003cT extends [TNumber](/jvm/api_docs/java/org/tensorflow/types/family/TNumber)\\\u003e [TopK](/jvm/api_docs/java/org/tensorflow/op/nn/TopK)\\\u003cT\\\u003e | [create](/jvm/api_docs/java/org/tensorflow/op/nn/TopK#create(org.tensorflow.op.Scope, org.tensorflow.Operand\u003cT\u003e, org.tensorflow.Operand\u003corg.tensorflow.types.TInt32\u003e, org.tensorflow.op.nn.TopK.Options...))([Scope](/jvm/api_docs/java/org/tensorflow/op/Scope) scope, [Operand](/jvm/api_docs/java/org/tensorflow/Operand)\\\u003cT\\\u003e input, [Operand](/jvm/api_docs/java/org/tensorflow/Operand)\\\u003c[TInt32](/jvm/api_docs/java/org/tensorflow/types/TInt32)\\\u003e k, [Options...](/jvm/api_docs/java/org/tensorflow/op/nn/TopK.Options) options) Factory method to create a class wrapping a new TopK operation. |\n| [Output](/jvm/api_docs/java/org/tensorflow/Output)\\\u003c[TInt32](/jvm/api_docs/java/org/tensorflow/types/TInt32)\\\u003e | [indices](/jvm/api_docs/java/org/tensorflow/op/nn/TopK#indices())() The indices of \\`values\\` within the last dimension of \\`input\\`. |\n| static [TopK.Options](/jvm/api_docs/java/org/tensorflow/op/nn/TopK.Options) | [sorted](/jvm/api_docs/java/org/tensorflow/op/nn/TopK#sorted(java.lang.Boolean))(Boolean sorted) |\n| [Output](/jvm/api_docs/java/org/tensorflow/Output)\\\u003cT\\\u003e | [values](/jvm/api_docs/java/org/tensorflow/op/nn/TopK#values())() The \\`k\\` largest elements along each last dimensional slice. |\n\n### Inherited Methods\n\nFrom class [org.tensorflow.op.RawOp](/jvm/api_docs/java/org/tensorflow/op/RawOp) \n\n|----------------------------------------------------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| final boolean | [equals](/jvm/api_docs/java/org/tensorflow/op/RawOp#equals(java.lang.Object))(Object obj) |\n| final int | [hashCode](/jvm/api_docs/java/org/tensorflow/op/RawOp#hashCode())() |\n| [Operation](/jvm/api_docs/java/org/tensorflow/Operation) | [op](/jvm/api_docs/java/org/tensorflow/op/RawOp#op())() Return this unit of computation as a single [Operation](/jvm/api_docs/java/org/tensorflow/Operation). |\n| final String | [toString](/jvm/api_docs/java/org/tensorflow/op/RawOp#toString())() |\n\nFrom class java.lang.Object \n\n|------------------|---------------------------|\n| boolean | equals(Object arg0) |\n| final Class\\\u003c?\\\u003e | getClass() |\n| int | hashCode() |\n| final void | notify() |\n| final void | notifyAll() |\n| String | toString() |\n| final void | wait(long arg0, int arg1) |\n| final void | wait(long arg0) |\n| final void | wait() |\n\nFrom interface [org.tensorflow.op.Op](/jvm/api_docs/java/org/tensorflow/op/Op) \n\n|-----------------------------------------------------------------------------------------|------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| abstract [ExecutionEnvironment](/jvm/api_docs/java/org/tensorflow/ExecutionEnvironment) | [env](/jvm/api_docs/java/org/tensorflow/op/Op#env())() Return the execution environment this op was created in. |\n| abstract [Operation](/jvm/api_docs/java/org/tensorflow/Operation) | [op](/jvm/api_docs/java/org/tensorflow/op/Op#op())() Return this unit of computation as a single [Operation](/jvm/api_docs/java/org/tensorflow/Operation). |\n\nConstants\n---------\n\n#### public static final String\n**OP_NAME**\n\nThe name of this op, as known by TensorFlow core engine \nConstant Value: \"TopKV2\"\n\nPublic Methods\n--------------\n\n#### public static [TopK](/jvm/api_docs/java/org/tensorflow/op/nn/TopK)\\\u003cT\\\u003e\n**create**\n([Scope](/jvm/api_docs/java/org/tensorflow/op/Scope) scope, [Operand](/jvm/api_docs/java/org/tensorflow/Operand)\\\u003cT\\\u003e input, [Operand](/jvm/api_docs/java/org/tensorflow/Operand)\\\u003c[TInt32](/jvm/api_docs/java/org/tensorflow/types/TInt32)\\\u003e k, [Options...](/jvm/api_docs/java/org/tensorflow/op/nn/TopK.Options) options)\n\nFactory method to create a class wrapping a new TopK operation. \n\n##### Parameters\n\n| scope | current scope |\n| input | 1-D or higher with last dimension at least \\`k\\`. |\n| k | 0-D. Number of top elements to look for along the last dimension (along each row for matrices). |\n| options | carries optional attributes values |\n|---------|-------------------------------------------------------------------------------------------------|\n\n##### Returns\n\n- a new instance of TopK \n\n#### public [Output](/jvm/api_docs/java/org/tensorflow/Output)\\\u003c[TInt32](/jvm/api_docs/java/org/tensorflow/types/TInt32)\\\u003e\n**indices**\n()\n\nThe indices of \\`values\\` within the last dimension of \\`input\\`. \n\n#### public static [TopK.Options](/jvm/api_docs/java/org/tensorflow/op/nn/TopK.Options)\n**sorted**\n(Boolean sorted)\n\n\u003cbr /\u003e\n\n##### Parameters\n\n| sorted | If true the resulting \\`k\\` elements will be sorted by the values in descending order. |\n|--------|----------------------------------------------------------------------------------------|\n\n#### public [Output](/jvm/api_docs/java/org/tensorflow/Output)\\\u003cT\\\u003e\n**values**\n()\n\nThe \\`k\\` largest elements along each last dimensional slice."]]
