小编Cod*_*eyB的帖子

我正在尝试使用scikit-learn的监督学习方法之一将文本片段分类为一个或多个类别.我尝试的所有算法的预测函数只返回一个匹配.

例如,我有一段文字:

"Theaters in New York compared to those in London"

我已经训练了算法为我提供的每个文本片段选择一个地方.

在上面的例子中,我希望它返回New York和London,但它只返回New York.

是否可以使用scikit-learn返回多个结果？或者甚至以最高概率返回标签？

谢谢你的帮助.

---更新

我尝试过使用,OneVsRestClassifier但我仍然只能在每段文字中找到一个选项.下面是我正在使用的示例代码

y_train = ('New York','London')


train_set = ("new york nyc big apple", "london uk great britain")
vocab = {'new york' :0,'nyc':1,'big apple':2,'london' : 3, 'uk': 4, 'great britain' : 5}
count = CountVectorizer(analyzer=WordNGramAnalyzer(min_n=1, max_n=2),vocabulary=vocab)
test_set = ('nice day in nyc','london town','hello welcome to the big apple. enjoy it here and london too')

X_vectorized = …

我有一个包含多个蜘蛛的scrapy项目.有什么方法可以定义哪些管道用于哪个蜘蛛？并非我所定义的所有管道都适用于每个蜘蛛.

谢谢

我是nodejs的新手,我正在尝试建立一个服务器,我从图像中获取exif信息.我的图像在S3上,所以我希望能够将s3 url作为参数传递并从中获取图像.

我使用下面的ExifImage项目来获取exif信息并根据他们的文档:

"您可以将缓冲区传递给ExifImage,而不是在文件系统中提供图像文件名."

如何从URL中将图像加载到节点中的缓冲区,以便将其传递给ExifImage函数

ExifImage项目:https: //github.com/gomfunkel/node-exif

谢谢你的帮助!

我是Django的新手,我正在尝试为我的模型自定义Admin界面,但在尝试添加ModelAdmin对象时出错.我的代码和错误包含在下面.如果我从register语句中取出BlogAdmin对象,我不会收到任何错误,并且网站加载正常.

谢谢你的帮助!

class Blog(models.Model):
    name = models.CharField(max_length=300)
    url = models.URLField()

class BlogAdmin(admin.ModelAdmin):
    list_display = ['name', 'url']
    search_fields = ["name"]

admin.site.register([Blog,BlogAdmin])

我收到以下错误:

类型对象'BlogAdmin'没有属性'_meta'

Exception Location:     /Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages/django/contrib/admin/sites.py in register, line 80
Python Executable:  /Users/Bilal/Development/Django/ENV/traveller3/bin/python
Python Version:     2.7.1
Python Path:    

['',
 '/Applications/PyCharm.app/helpers/pydev',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages/pip-1.0.2-py2.7.egg',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages/MySQL_python-1.2.3c1-py2.7-macosx-10.7-intel.egg',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages/scikit_learn-0.9-py2.7-macosx-10.7-intel.egg',
 '/Users/Bilal/Development',
 '/Library/Python/2.7/site-packages/pip-1.0.2-py2.7.egg',
 '/Users/Bilal/Development/scrapyard',
 '/Applications/PyCharm.app/helpers',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python27.zip',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/plat-darwin',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/plat-mac',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Users/Bilal/Development/Django/ENV/traveller3/Extras/lib/python',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/lib-tk',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/lib-old',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/lib-dynload',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-darwin',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/lib-tk',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/plat-mac/lib-scriptpackages',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages/PIL',
 '/Library/Python/2.7/site-packages',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python',
 '/System/Library/Frameworks/Python.framework/Versions/2.7/Extras/lib/python/PyObjC',
 '/Users/Bilal/Development/Django/ENV/traveller3/lib/python2.7/site-packages/IPython/extensions']