machine learning - Features from line segments - what best feature differentiate line segment groups such following? train line segments extracted images classification. edit: sample each class Get link Facebook X Pinterest Email Other Apps Comments
python - ValueError: empty vocabulary; perhaps the documents only contain stop words - i'm using (for first time) scikit library , got error: valueerror: empty vocabulary; perhaps documents contain stop words file "c:\users\a605563\desktop\velibprojetpreso\traitementtwitterdico.py", line 33, in <module> x_train_counts = count_vect.fit_transform(filetweets) file "c:\python27\lib\site-packages\sklearn\feature_extraction\text.py", line 804, in fit_transform self.fixed_vocabulary_) file "c:\python27\lib\site-packages\sklearn\feature_extraction\text.py", line 751, in _count_vocab raise valueerror("empty vocabulary; perhaps documents contain stop words but don't understand why that's happening. import sklearn sklearn.feature_extraction.text import countvectorizer import pandas pd import numpy import unicodedata import nltk tweetsfile = open('tweets2015-08-13.csv', 'r+') f2 = open('analyzer.txt', 'a') print tweetsfile.readline() count_vect = countvectorizer(strip_accents='ascii... Read more
json - Zend error Connection - i have problem code, first code <?php require_once('zend/json.php'); require_once('zend/db.php'); //require_once 'zend/db/adapter/pdo/pgsql.php'; class jsonvi { protected $_db; public function _koneksi () { try { $this->_db = zend_db::factory('pdo_pgsql',array( 'host'=>'localhost', 'username'=>'stet', 'password'=>'test', 'dbname'=>'test' )); return $this->_db; } catch(zend_db_exception $e) { return $e->getmessage(); } } public function getdata() { $db = $this->_koneksi(); try { $sql = "select * info "; ... Read more
java - UnknownEntityTypeException: Unable to locate persister (Hibernate 5.0) - in code below when try execute main.java getting exception: exception in thread "main" org.hibernate.unknownentitytypeexception: unable locate persister: com.np.vta.test.pojo.users @ org.hibernate.internal.sessionfactoryimpl.locateentitypersister(sessionfactoryimpl.java:792) @ org.hibernate.internal.sessionimpl.locateentitypersister(sessionimpl.java:2637) @ org.hibernate.internal.sessionimpl.access$2500(sessionimpl.java:164) @ org.hibernate.internal.sessionimpl$identifierloadaccessimpl.<init>(sessionimpl.java:2575) @ org.hibernate.internal.sessionimpl$identifierloadaccessimpl.<init>(sessionimpl.java:2562) @ org.hibernate.internal.sessionimpl.byid(sessionimpl.java:1044) @ org.hibernate.internal.sessionimpl.get(sessionimpl.java:955) @ com.app.test.main.main(main.java:20) but if uncomment cfg.addclass( users.class ).addresource( "com/np/vta/test/pojo/users.hbm.xml" ); code works fine. why not reading <mapping... Read more
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