import{S as ns,i as ls,s as is,e as o,k as u,w as y,t as p,M as ps,c as n,d as e,m,a as l,x as b,h as f,b as h,G as t,g as d,y as k,q as j,o as E,B as T,v as fs}from"../chunks/vendor-hf-doc-builder.js";import{T as Oa}from"../chunks/Tip-hf-doc-builder.js";import{Y as Ia}from"../chunks/Youtube-hf-doc-builder.js";import{I as ea}from"../chunks/IconCopyLink-hf-doc-builder.js";import{C as U}from"../chunks/CodeBlock-hf-doc-builder.js";import{D as ds}from"../chunks/DocNotebookDropdown-hf-doc-builder.js";import{F as os,M as Ma}from"../chunks/Markdown-hf-doc-builder.js";function hs(gt){let g,A;return{c(){g=o("p"),A=p(`You will see a warning about some of the pretrained weights not being used and some weights being randomly
initialized. Don\u2019t worry, this is completely normal! The pretrained head of the BERT model is discarded, and replaced with a randomly initialized classification head. You will fine-tune this new model head on your sequence classification task, transferring the knowledge of the pretrained model to it.`)},l(c){g=n(c,"P",{});var w=l(g);A=f(w,`You will see a warning about some of the pretrained weights not being used and some weights being randomly
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model = AutoModelForSequenceClassification.from_pretrained("bert-base-cased", num_labels=5)`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoModelForSequenceClassification

<span class="hljs-meta">&gt;&gt;&gt; </span>model = AutoModelForSequenceClassification.from_pretrained(<span class="hljs-string">&quot;bert-base-cased&quot;</span>, num_labels=<span class="hljs-number">5</span>)`}}),Xe=new Oa({props:{$$slots:{default:[hs]},$$scope:{ctx:gt}}}),fe=new ea({}),X=new U({props:{code:`from transformers import TrainingArguments

training_args = TrainingArguments(output_dir="test_trainer")`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> TrainingArguments

<span class="hljs-meta">&gt;&gt;&gt; </span>training_args = TrainingArguments(output_dir=<span class="hljs-string">&quot;test_trainer&quot;</span>)`}}),O=new ea({}),F=new U({props:{code:`import numpy as np
import evaluate

metric = evaluate.load("accuracy")`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> numpy <span class="hljs-keyword">as</span> np
<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">import</span> evaluate

<span class="hljs-meta">&gt;&gt;&gt; </span>metric = evaluate.load(<span class="hljs-string">&quot;accuracy&quot;</span>)`}}),R=new U({props:{code:`def compute_metrics(eval_pred):
    logits, labels = eval_pred
    predictions = np.argmax(logits, axis=-1)
    return metric.compute(predictions=predictions, references=labels)`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">def</span> <span class="hljs-title function_">compute_metrics</span>(<span class="hljs-params">eval_pred</span>):
<span class="hljs-meta">... </span>    logits, labels = eval_pred
<span class="hljs-meta">... </span>    predictions = np.argmax(logits, axis=-<span class="hljs-number">1</span>)
<span class="hljs-meta">... </span>    <span class="hljs-keyword">return</span> metric.compute(predictions=predictions, references=labels)`}}),G=new U({props:{code:`from transformers import TrainingArguments, Trainer

training_args = TrainingArguments(output_dir="test_trainer", evaluation_strategy="epoch")`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> TrainingArguments, Trainer

<span class="hljs-meta">&gt;&gt;&gt; </span>training_args = TrainingArguments(output_dir=<span class="hljs-string">&quot;test_trainer&quot;</span>, evaluation_strategy=<span class="hljs-string">&quot;epoch&quot;</span>)`}}),Fe=new ea({}),r=new U({props:{code:`trainer = Trainer(
    model=model,
    args=training_args,
    train_dataset=small_train_dataset,
    eval_dataset=small_eval_dataset,
    compute_metrics=compute_metrics,
)`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span>trainer = Trainer(
<span class="hljs-meta">... </span>    model=model,
<span class="hljs-meta">... </span>    args=training_args,
<span class="hljs-meta">... </span>    train_dataset=small_train_dataset,
<span class="hljs-meta">... </span>    eval_dataset=small_eval_dataset,
<span class="hljs-meta">... </span>    compute_metrics=compute_metrics,
<span class="hljs-meta">... </span>)`}}),We=new U({props:{code:"trainer.train()",highlighted:'<span class="hljs-meta">&gt;&gt;&gt; </span>trainer.train()'}}),{c(){y(g.$$.fragment),A=u(),c=o("h2"),w=o("a"),P=o("span"),y(z.$$.fragment),M=u(),q=o("span"),Ge=p("Train with PyTorch Trainer"),B=u(),S=o("p"),Ue=p("\u{1F917} Transformers provides a "),H=o("a"),ta=p("Trainer"),_t=p(" class optimized for training \u{1F917} Transformers models, making it easier to start training without manually writing your own training loop. The "),N=o("a"),_e=p("Trainer"),kt=p(" API supports a wide range of training options and features such as logging, gradient accumulation, and mixed precision."),D=u(),ve=o("p"),Je=p("Start by loading your model and specify the number of expected labels. 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dataset = load_dataset("glue", "cola")
dataset = dataset["train"]  # Just take the training split for now`,highlighted:`<span class="hljs-keyword">from</span> datasets <span class="hljs-keyword">import</span> load_dataset

dataset = load_dataset(<span class="hljs-string">&quot;glue&quot;</span>, <span class="hljs-string">&quot;cola&quot;</span>)
dataset = dataset[<span class="hljs-string">&quot;train&quot;</span>]  <span class="hljs-comment"># Just take the training split for now</span>`}}),Y=new U({props:{code:`from transformers import AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained("bert-base-cased")
tokenized_data = tokenizer(dataset["text"], return_tensors="np", padding=True)

labels = np.array(dataset["label"])  # Label is already an array of 0 and 1`,highlighted:`<span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained(<span class="hljs-string">&quot;bert-base-cased&quot;</span>)
tokenized_data = tokenizer(dataset[<span class="hljs-string">&quot;text&quot;</span>], return_tensors=<span class="hljs-string">&quot;np&quot;</span>, padding=<span class="hljs-literal">True</span>)

labels = np.array(dataset[<span class="hljs-string">&quot;label&quot;</span>])  <span class="hljs-comment"># Label is already an array of 0 and 1</span>`}}),Ze=new U({props:{code:`from transformers import TFAutoModelForSequenceClassification
from tensorflow.keras.optimizers import Adam

# Load and compile our model
model = TFAutoModelForSequenceClassification.from_pretrained("bert-base-cased")
# Lower learning rates are often better for fine-tuning transformers
model.compile(optimizer=Adam(3e-5))

model.fit(tokenized_data, labels)`,highlighted:`<span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> TFAutoModelForSequenceClassification
<span class="hljs-keyword">from</span> tensorflow.keras.optimizers <span class="hljs-keyword">import</span> Adam

<span class="hljs-comment"># Load and compile our model</span>
model = TFAutoModelForSequenceClassification.from_pretrained(<span class="hljs-string">&quot;bert-base-cased&quot;</span>)
<span class="hljs-comment"># Lower learning rates are often better for fine-tuning transformers</span>
model.<span class="hljs-built_in">compile</span>(optimizer=Adam(<span class="hljs-number">3e-5</span>))

model.fit(tokenized_data, labels)`}}),K=new Oa({props:{$$slots:{default:[cs]},$$scope:{ctx:gt}}}),he=new ea({}),Ee=new U({props:{code:`def tokenize_dataset(data):
    # Keys of the returned dictionary will be added to the dataset as columns
    return tokenizer(data["text"])


dataset = dataset.map(tokenize_dataset)`,highlighted:`<span class="hljs-keyword">def</span> <span class="hljs-title function_">tokenize_dataset</span>(<span class="hljs-params">data</span>):
    <span class="hljs-comment"># Keys of the returned dictionary will be added to the dataset as columns</span>
    <span class="hljs-keyword">return</span> tokenizer(data[<span class="hljs-string">&quot;text&quot;</span>])


dataset = dataset.<span class="hljs-built_in">map</span>(tokenize_dataset)`}}),G=new U({props:{code:"tf_dataset = model.prepare_tf_dataset(dataset, batch_size=16, shuffle=True, tokenizer=tokenizer)",highlighted:'<span class="hljs-meta">&gt;&gt;&gt; </span>tf_dataset = model.prepare_tf_dataset(dataset, batch_size=<span class="hljs-number">16</span>, shuffle=<span class="hljs-literal">True</span>, tokenizer=tokenizer)'}}),Le=new U({props:{code:`model.compile(optimizer=Adam(3e-5))

model.fit(tf_dataset)`,highlighted:`model.<span class="hljs-built_in">compile</span>(optimizer=Adam(<span class="hljs-number">3e-5</span>))

model.fit(tf_dataset)`}}),{c(){g=o("a"),A=u(),y(c.$$.fragment),w=u(),P=o("h2"),z=o("a"),M=o("span"),y(q.$$.fragment),Ge=u(),B=o("span"),S=p("Train a TensorFlow model with Keras"),Ue=u(),H=o("p"),ta=p("You can also train \u{1F917} Transformers models in TensorFlow with the Keras API!"),_t=u(),N=o("h3"),_e=o("a"),kt=o("span"),y(D.$$.fragment),ve=u(),Je=o("span"),vt=p("Loading data for Keras"),ot=u(),jt=o("p"),Ut=p(`When you want to train a \u{1F917} Transformers model with the Keras API, you need to convert your dataset to a format that
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<span class="hljs-meta">&gt;&gt;&gt; </span>metric = evaluate.load(<span class="hljs-string">&quot;accuracy&quot;</span>)
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ws(gt){let g,A;return g=new Ma({props:{$$slots:{default:[$s]},$$scope:{ctx:gt}}}),{c(){y(g.$$.fragment)},l(c){b(g.$$.fragment,c)},m(c,w){k(g,c,w),A=!0},p(c,w){const P={};w&2&&(P.$$scope={dirty:w,ctx:c}),g.$set(P)},i(c){A||(j(g.$$.fragment,c),A=!0)},o(c){E(g.$$.fragment,c),A=!1},d(c){T(g,c)}}}function ys(gt){let g,A,c,w,P,z,M,q,Ge,B,S,Ue,H,ta,_t,N,_e,kt,D,ve,Je,vt,ot,jt,Ut,De,ie,Xe,J,I,ae,pe,fe,nt,Ie,Lt,Dt,Y,lt,se,Et,ze,Oe,$e,It,we,it,$t,Tt,X,Ze,W,K,xe,O,pt,ft,re,de,x,he,Jt,qe,Me,wt,ue,dt,ye,be,Be,oe,aa,At,ke,He,Z,Q,Pt,je,Ot,F,Qe,L,me,Ve,Se,Mt,et,sa,Bt,V,Ye,Ce,ht,R,tt,Ne,Ee,Ke,at,ut,zt,G,Ht,C,ne,ce,Fe,Te,mt,xt,Xt,ee,Ae,le,st,yt,Yt;return z=new ea({}),S=new ds({props:{classNames:"absolute z-10 right-0 top-0",options:[{label:"Mixed",value:"https://colab.research.google.com/github/huggingface/notebooks/blob/main/transformers_doc/en/training.ipynb"},{label:"PyTorch",value:"https://colab.research.google.com/github/huggingface/notebooks/blob/main/transformers_doc/en/pytorch/training.ipynb"},{label:"TensorFlow",value:"https://colab.research.google.com/github/huggingface/notebooks/blob/main/transformers_doc/en/tensorflow/training.ipynb"},{label:"Mixed",value:"https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/main/transformers_doc/en/training.ipynb"},{label:"PyTorch",value:"https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/main/transformers_doc/en/pytorch/training.ipynb"},{label:"TensorFlow",value:"https://studiolab.sagemaker.aws/import/github/huggingface/notebooks/blob/main/transformers_doc/en/tensorflow/training.ipynb"}]}}),nt=new ea({}),lt=new Ia({props:{id:"_BZearw7f0w"}}),X=new U({props:{code:`from datasets import load_dataset

dataset = load_dataset("yelp_review_full")
dataset["train"][100]`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> datasets <span class="hljs-keyword">import</span> load_dataset

<span class="hljs-meta">&gt;&gt;&gt; </span>dataset = load_dataset(<span class="hljs-string">&quot;yelp_review_full&quot;</span>)
<span class="hljs-meta">&gt;&gt;&gt; </span>dataset[<span class="hljs-string">&quot;train&quot;</span>][<span class="hljs-number">100</span>]
{<span class="hljs-string">&#x27;label&#x27;</span>: <span class="hljs-number">0</span>,
 <span class="hljs-string">&#x27;text&#x27;</span>: <span class="hljs-string">&#x27;My expectations for McDonalds are t rarely high. But for one to still fail so spectacularly...that takes something special!\\\\nThe cashier took my friends\\&#x27;s order, then promptly ignored me. I had to force myself in front of a cashier who opened his register to wait on the person BEHIND me. I waited over five minutes for a gigantic order that included precisely one kid\\&#x27;s meal. After watching two people who ordered after me be handed their food, I asked where mine was. The manager started yelling at the cashiers for \\\\&quot;serving off their orders\\\\&quot; when they didn\\&#x27;t have their food. But neither cashier was anywhere near those controls, and the manager was the one serving food to customers and clearing the boards.\\\\nThe manager was rude when giving me my order. She didn\\&#x27;t make sure that I had everything ON MY RECEIPT, and never even had the decency to apologize that I felt I was getting poor service.\\\\nI\\&#x27;ve eaten at various McDonalds restaurants for over 30 years. I\\&#x27;ve worked at more than one location. I expect bad days, bad moods, and the occasional mistake. But I have yet to have a decent experience at this store. It will remain a place I avoid unless someone in my party needs to avoid illness from low blood sugar. Perhaps I should go back to the racially biased service of Steak n Shake instead!&#x27;</span>}`}}),de=new U({props:{code:`from transformers import AutoTokenizer

tokenizer = AutoTokenizer.from_pretrained("bert-base-cased")


def tokenize_function(examples):
    return tokenizer(examples["text"], padding="max_length", truncation=True)


tokenized_datasets = dataset.map(tokenize_function, batched=True)`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">from</span> transformers <span class="hljs-keyword">import</span> AutoTokenizer

<span class="hljs-meta">&gt;&gt;&gt; </span>tokenizer = AutoTokenizer.from_pretrained(<span class="hljs-string">&quot;bert-base-cased&quot;</span>)


<span class="hljs-meta">&gt;&gt;&gt; </span><span class="hljs-keyword">def</span> <span class="hljs-title function_">tokenize_function</span>(<span class="hljs-params">examples</span>):
<span class="hljs-meta">... </span>    <span class="hljs-keyword">return</span> tokenizer(examples[<span class="hljs-string">&quot;text&quot;</span>], padding=<span class="hljs-string">&quot;max_length&quot;</span>, truncation=<span class="hljs-literal">True</span>)


<span class="hljs-meta">&gt;&gt;&gt; </span>tokenized_datasets = dataset.<span class="hljs-built_in">map</span>(tokenize_function, batched=<span class="hljs-literal">True</span>)`}}),Me=new U({props:{code:`small_train_dataset = tokenized_datasets["train"].shuffle(seed=42).select(range(1000))
small_eval_dataset = tokenized_datasets["test"].shuffle(seed=42).select(range(1000))`,highlighted:`<span class="hljs-meta">&gt;&gt;&gt; </span>small_train_dataset = tokenized_datasets[<span class="hljs-string">&quot;train&quot;</span>].shuffle(seed=<span class="hljs-number">42</span>).select(<span class="hljs-built_in">range</span>(<span class="hljs-number">1000</span>))
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