"NotFittedError:

[himanshujosfi]

Can you plz help how to sole this problem
"NotFittedError: This MultinomialNB instance is not fitted yet. Call 'fit' with appropriate arguments before using this estimator."
plz respond

[keshavSvishwakarma]

import pickle
mnb.fit(X_train,y_train)
y_pred2 = mnb.predict(X_test)
pickle.dump(tfidf,open('vectorizer.pkl','wb'))
pickle.dump(mnb,open('model.pkl','wb'))

"Use this with dum and create its work"

[Anushka05877]

File "/Users/anushka/anaconda3/lib/python3.11/site-packages/streamlit/runtime/scriptrunner/script_runner.py", line 534, in _run_script
exec(code, module.dict)
File "/Users/anushka/PycharmProjects/mail/main.py", line 49, in
result = model.predict(vector_input)[0]
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/Users/anushka/anaconda3/lib/python3.11/site-packages/sklearn/naive_bayes.py", line 104, in predict
check_is_fitted(self)
File "/Users/anushka/anaconda3/lib/python3.11/site-packages/sklearn/utils/validation.py", line 1390, in check_is_fitted
raise NotFittedError(msg % {"name": type(estimator).name})
sklearn.exceptions.NotFittedError: This MultinomialNB instance is not fitted yet. Call 'fit' with appropriate arguments before using this estimator.
can anyone help me in solving this error

[AbdullahKhanKakar]

# importing vectorizer
from sklearn.feature_extraction.text import TfidfVectorizer
tf_idf = TfidfVectorizer(max_features=3500)

# create vectors of transformed text feature and then stored it in x variable
x = tf_idf.fit_transform(df["transformed_text"]).toarray()
y = df["target"].values

# now try to train MultinomialNB(), it will work
from sklearn.naive_bayes import MultinomialNB
model = MultinomialNB()
model.fit(x_train, y_train)
y_pred = model.predict(x_test)
print(accuracy_score(y_test, y_pred))
print(precision_score(y_test, y_pred))

Hope you understand

[BE20F06F054]

how to resolve not fitted error for the Spam classifier Project?? Anyone can please help me

[himanshujosfi]

Exact what error u are facing Please share

…

On Mon, 15 Apr 2024 at 6:13 PM, Priti Samse(Government college of Enginnering,Aurangabad) ***@***.***> wrote: how to resolve not fitted error for the Spam classifier Project?? Anyone can please help me — Reply to this email directly, view it on GitHub <#7 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AVCE43EAVYPPZHC2ZIAEN3DY5PDOZAVCNFSM6AAAAAAZH2RZQSVHI2DSMVQWIX3LMV43OSLTON2WKQ3PNVWWK3TUHMZDANJWG43DIMRXHE> . You are receiving this because you modified the open/close state.Message ID: ***@***.***>

[BE20F06F054]

File Load Error for model.pkl
C:\Users\DELL\OneDrive\Desktop\numpy project\model.pkl is not UTF-8 encoded

this happen for both the files i.e. vectorizer.pkl and model.pkl

[BE20F06F054]

NotFittedError: The TF-IDF vectorizer is not fitted
Traceback:

File "C:\Users\DELL\PycharmProjects\SMS Spam Project\venv\Lib\site-packages\streamlit\runtime\scriptrunner\script_runner.py", line 542, in _run_script
exec(code, module.dict)
File "C:\Users\DELL\PycharmProjects\SMS Spam Project\app.py", line 42, in
vector_input = tfidf.transform([transformed_sms])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Users\DELL\PycharmProjects\SMS Spam Project\venv\Lib\site-packages\sklearn\feature_extraction\text.py", line 2161, in transform
check_is_fitted(self, msg="The TF-IDF vectorizer is not fitted")
File "C:\Users\DELL\PycharmProjects\SMS Spam Project\venv\Lib\site-packages\sklearn\utils\validation.py", line 1461, in check_is_fitted
raise NotFittedError(msg % {"name": type(estimator).name})

and this is the error after streamlit running

[ParthYuki]

import pandas as pd
import joblib
from sklearn.feature_extraction.text import TfidfVectorizer
from sklearn.svm import SVC
from sklearn.naive_bayes import MultinomialNB
from sklearn.ensemble import ExtraTreesClassifier, VotingClassifier
from sklearn.model_selection import train_test_split

Load the dataset

data = pd.read_csv('spam.csv', encoding='latin-1')
data = data[['v1', 'v2']]
data.columns = ['label', 'text']
data['label'] = data['label'].map({'ham': 0, 'spam': 1})

Split the data

x_train, x_test, y_train, y_test = train_test_split(data['text'], data['label'], test_size=0.2, random_state=42)

Fit the TF-IDF vectorizer

tfidf_vectorizer = TfidfVectorizer(max_features=3500)
x_train_tfidf = tfidf_vectorizer.fit_transform(x_train)

Define the classifiers

svc = SVC(kernel='sigmoid', gamma=1.0, probability=True)
mnb = MultinomialNB()
etc = ExtraTreesClassifier(n_estimators=50, random_state=2)

Create a voting classifier

voting = VotingClassifier(estimators=[('svm', svc), ('nb', mnb), ('et', etc)], voting='soft')
voting.fit(x_train_tfidf, y_train)

Save the trained model and vectorizer

joblib.dump(voting, 'spam_classifier.pkl')
joblib.dump(tfidf_vectorizer, 'tfidf_vectorizer.pkl')

I've used joblib instead of pickle and it worked.
Hope it works for you.