work in progress: automatic classification

git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2071 fd906abe-77d9-0310-91a1-e0d9ade77398

classifier/README.txt

@@ -26,8 +26,85 @@ configuration):
   >>> t = TestSite(site)
   >>> concepts, resources, views = t.setup()
 
-  >>> len(concepts) + len(resources)
+  >>> len(concepts), len(resources)
-  18
+  (20, 0)
+
+Let's now add an external collection that reads in a set of resources
+from external files so we have something to work with.
+
+  >>> from loops.concept import Concept
+  >>> from loops.setup import addObject
+  >>> from loops.common import adapted
+  >>> from loops.classifier.testsetup import dataDir
+
+  >>> tExternalCollection = concepts['extcollection']
+  >>> coll01 = addObject(concepts, Concept, 'coll01',
+  ...                    title=u'Collection One', conceptType=tExternalCollection)
+  >>> aColl01 = adapted(coll01)
+  >>> aColl01.baseAddress = dataDir
+  >>> aColl01.address = ''
+
+  >>> aColl01.update()
+  >>> len(resources)
+  7
+  >>> rnames = list(sorted(resources.keys()))
+  >>> rnames[0]
+  u'cust_im_contract_webbg_20071015.txt'
+
+
+Filename-based Classification
+=============================
+
+Let's first look at the external address (i.e. the file name) of the
+resource we want to classify.
+
+  >>> r1 = resources[rnames[0]]
+  >>> adapted(r1)
+  <loops.resource.ExternalFileAdapter object ...>
+  >>> adapted(r1).externalAddress
+  'cust_im_contract_webbg_20071015.txt'
+
+OK, that's what we need. So we get the preconfigured classifier
+(see testsetup.py) and let it classify the resource.
+
+  >>> classifier = adapted(concepts['fileclassifier'])
+
+Before just processing the resource we'll have a look at the details
+and follow the classifier step by step.
+
+  >>> from loops.classifier.base import InformationSet
+  >>> from loops.classifier.interfaces import IExtractor, IAnalyzer
+  >>> infoSet = InformationSet()
+  >>> for name in classifier.extractors.split():
+  ...     print 'extractor:', name
+  ...     extractor = component.getAdapter(adapted(r1), IExtractor, name=name)
+  ...     infoSet.update(extractor.extractInformationSet())
+  extractor: filename
+
+  >>> infoSet
+  {'filename': 'cust_im_contract_webbg_20071015.txt'}
+
+  >>> analyzer = component.getUtility(IAnalyzer, name=classifier.analyzer)
+  >>> statements = analyzer.extractStatements(infoSet, classifier)
+  >>> statements
+  []
+
+So there seems to be something missing - we have to create concepts
+that may be identified as being candidates for classification.
+
+  >>> tInstitution = addObject(concepts, Concept, 'institution',
+  ...                     title=u'Institution', conceptType=concepts['type'])
+  >>> cust_im = addObject(concepts, Concept, 'im_editors',
+  ...                     title=u'im Editors', conceptType=tInstitution)
+  >>> t.indexAll(concepts, resources)
+
+  >>> statements = analyzer.extractStatements(infoSet, classifier)
+  >>> len(statements)
+  1
+
+So we are now ready to have the whole stuff run in one call.
+
+  >>> classifier.process(r1)
 
 
 Fin de partie

classifier/base.py

@@ -51,7 +51,14 @@ class Classifier(AdapterBase):
     _contextAttributes = list(IClassifier) + list(IConcept)
 
     def process(self, resource):
-        pass
+        infoSet = InformationSet()
+        for name in self.extractors.split():
+            extractor = component.getAdapter(adapted(resource), IExtractor, name=name)
+            infoSet.update(extractor.extractInformationSet())
+        analyzer = component.getUtility(IAnalyzer, name=self.analyzer)
+        statements = analyzer.extractStatements(infoSet, self)
+        for statement in statements:
+            self.assignConcept(statement)
 
     def assignConcept(self, statement):
         pass
@@ -73,7 +80,7 @@ class Analyzer(object):
 
     implements(IAnalyzer)
 
-    def extractStatements(self,informationSet):
+    def extractStatements(self, informationSet, classifier=None):
         return []
 
 
@@ -86,7 +93,9 @@ class Statement(object):
 
     implements(IStatement)
 
-    subject = None
+    def __init__(self, subject=None, predicate=None, object=None, relevance=100):
-    predicate = None
+        self.subject = subject
-    object = None
+        self.predicate = predicate
-    relevance = 100
+        self.object = object
+        self.relevance = relevance
+

classifier/interfaces.py

@@ -33,6 +33,12 @@ class IClassifier(Interface):
         concepts to assign.
     """
 
+    extractors = schema.TextLine(
+        title=_(u'Extractors'),
+        description=_(u'Space-separated list of names of extractor adapters.'),
+        default=u'',
+        required=False)
+
     analyzer = schema.TextLine(
         title=_(u'Analyzer'),
         description=_(u'Name of a utility that is able to analyze '
@@ -72,9 +78,13 @@ class IAnalyzer(Interface):
         provide a collection of statements about it.
     """
 
-    def extractStatements(informationSet):
+    def extractStatements(informationSet, classifier=None):
         """ Return a collection of statements derived from the
             information set given.
+
+            The ``classifier`` argument may be given in order to
+            check the environment of the classifier, e.g. available
+            concepts that may be used as attributes for statements.
         """
 
 

classifier/sample.py

@@ -0,0 +1,101 @@
+#
+#  Copyright (c) 2007 Helmut Merz helmutm@cy55.de
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+"""
+Sample classifier implementation.
+
+$Id$
+"""
+
+from zope import component
+from zope.app.catalog.interfaces import ICatalog
+from zope.component import adapts
+
+from cybertools.organize.interfaces import IPerson
+from cybertools.typology.interfaces import IType
+from loops.classifier.base import Analyzer
+from loops.classifier.base import Statement
+
+
+class SampleAnalyzer(Analyzer):
+    """ A fairly specific analyzer that expects filenames following this
+        format:
+
+          ctype_name_doctype_owner_date.extension
+
+        with ctype = ('cust', 'emp'), spec is the short name of a customer or
+        an employee, doctype = ('note', 'contract'), and owner
+        being the short name of the user that is responsible for the
+        resource.
+    """
+
+    def handleCustomer(self, name, classifier):
+        result = []
+        candidates = self.findConcepts(name)
+        cm = self.getConceptManager(classifier)
+        custTypes = [c for c in (cm.get('institution'), cm.get('customer'),)
+                       if c is not None]
+        for c in candidates:
+            ctype = IType(c)
+            if ctype.typeProvider in custTypes:
+                result.append(Statement(c))
+        return result
+
+    def handleEmployee(self, name, classifier):
+        result = []
+        #print 'employee', name
+        return result
+
+    def handleOwner(self, name, classifier):
+        result = []
+        #print 'owner', name
+        return result
+
+    def handleDoctype(self, name, classifier):
+        result = []
+        #print 'doctype', name
+        return result
+
+    handlers = dict(cust=handleCustomer, emp=handleEmployee)
+
+    def extractStatements(self, informationSet, classifier=None):
+        result = []
+        if classifier is None:
+            return result  # classifier is needed for getting access to concepts
+        fn = informationSet.get('filename')
+        if fn is None:
+            return result
+        parts = fn.split('_')
+        if len(parts) > 1:
+            ctype = parts.pop(0)
+            if ctype in self.handlers:
+                name = parts.pop(0)
+                result.extend(self.handlers[ctype](self, name, classifier))
+        if len(parts) > 1:
+            result.extend(self.handleDoctype(parts.pop(0), classifier))
+        if len(parts) > 1:
+            result.extend(self.handleOwner(parts.pop(0), classifier))
+        return result
+
+    def findConcepts(self, name):
+        cat = component.getUtility(ICatalog)
+        return cat.searchResults(loops_text=name)
+
+    def getConceptManager(self, obj):
+        return obj.context.getLoopsRoot().getConceptManager()
+

classifier/standard.py

@@ -0,0 +1,41 @@
+#
+#  Copyright (c) 2007 Helmut Merz helmutm@cy55.de
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License as published by
+#  the Free Software Foundation; either version 2 of the License, or
+#  (at your option) any later version.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#  GNU General Public License for more details.
+#
+#  You should have received a copy of the GNU General Public License
+#  along with this program; if not, write to the Free Software
+#  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+
+"""
+Standard implementations of classifier components.
+
+$Id$
+"""
+
+from zope.component import adapts
+
+from loops.classifier.base import Extractor
+from loops.classifier.base import InformationSet
+from loops.interfaces import IExternalFile
+
+
+class FilenameExtractor(Extractor):
+
+    adapts(IExternalFile)
+
+    def __init__(self, context):
+        self.context = context
+
+    def extractInformationSet(self):
+        filename = self.context.externalAddress
+        return InformationSet(filename=filename)

classifier/testdata/cust_im_contract_webbg_20071015.txt

@@ -0,0 +1 @@
+ 

classifier/testdata/cust_im_note_smitha_20071004.txt

@@ -0,0 +1 @@
+ 

classifier/testdata/cust_im_note_webbg_20070924.txt

@@ -0,0 +1 @@
+ 

classifier/testdata/cust_mc_note_webbg_20070824.txt

@@ -0,0 +1 @@
+ 

classifier/testdata/emp_watersj_note_miller_20070822.txt

@@ -0,0 +1 @@
+ 

classifier/testdata/emp_webbg_note_millerj_20070804.txt

@@ -0,0 +1 @@
+ 

classifier/testdata/note_smitha_20070824.txt

@@ -0,0 +1 @@
+ 

classifier/testsetup.py

@@ -6,12 +6,23 @@ $Id$
 
 import os
 from zope import component
+#from zope.app.catalog.interfaces import ICatalog
+#from zope.app.catalog.text import TextIndex
 
+from cybertools.storage.interfaces import IExternalStorage
+from cybertools.storage.filesystem import fullPathStorage
 from loops import util
-from loops.classifier.base import Classifier, Extractor, Analyzer
+from loops.classifier.base import Classifier
+from loops.classifier.sample import SampleAnalyzer
+from loops.classifier.standard import FilenameExtractor
 from loops.classifier.interfaces import IClassifier, IAnalyzer
+from loops.common import adapted
 from loops.concept import Concept
-from loops.resource import Resource
+from loops.resource import Resource, ExternalFileAdapter
+from loops.interfaces import IIndexAttributes, IExternalFile
+from loops.integrator.collection import DirectoryCollectionProvider
+from loops.integrator.collection import ExternalCollectionAdapter
+from loops.integrator.interfaces import IExternalCollection, IExternalCollectionProvider
 from loops.knowledge.setup import SetupManager as KnowledgeSetupManager
 from loops.setup import SetupManager, addAndConfigureObject
 from loops.tests.setup import TestSite as BaseTestSite
@@ -28,18 +39,34 @@ class TestSite(BaseTestSite):
         component.provideAdapter(KnowledgeSetupManager, name='knowledge')
         concepts, resources, views = self.baseSetup()
 
+        #catalog = component.getUtility(ICatalog)
+        #catalog['loops_text'] = TextIndex('text', IIndexAttributes, True)
+        # classifier and Co
         tType = concepts.getTypeConcept()
         tClassifier = addAndConfigureObject(concepts, Concept, 'classifier',
                                 title=u'Classifier', conceptType=tType,
                                 typeInterface=IClassifier)
-
         component.provideAdapter(Classifier)
-        fileClassifier = addAndConfigureObject(concepts, Concept,
+        sampleClassifier = addAndConfigureObject(concepts, Concept,
                                 'fileclassifier', title=u'File Classifier',
                                 conceptType=tClassifier)
+        sampleClassifier = adapted(sampleClassifier)
+        sampleClassifier.extractors = 'filename'
+        sampleClassifier.analyzer = 'sample'
+        component.provideAdapter(FilenameExtractor, name='filename')
+        component.provideUtility(SampleAnalyzer(), IAnalyzer, name='sample')
 
-        component.provideAdapter(Extractor)
+        # external file stuff for providing test files
-        component.provideUtility(Analyzer, IAnalyzer)
+        component.provideAdapter(ExternalFileAdapter, provides=IExternalFile)
+        component.provideUtility(fullPathStorage(), IExternalStorage, name='fullpath')
+        component.provideAdapter(ExternalCollectionAdapter)
+        component.provideUtility(DirectoryCollectionProvider(), IExternalCollectionProvider)
+        tExtFile = addAndConfigureObject(concepts, Concept, 'extfile',
+                                title=u'External File', conceptType=tType,
+                                typeInterface=IExternalFile)
+        tExtCollection = addAndConfigureObject(concepts, Concept, 'extcollection',
+                                title=u'External Collection', conceptType=tType,
+                                typeInterface=IExternalCollection)
 
         self.indexAll(concepts, resources)
         return concepts, resources, views

integrator/README.txt

@@ -111,7 +111,7 @@ Working with the External Collection
    (u'programming_zope_zope3.txt', u'zope3', 'fullpath')]
 
 We may update the collection after having changed the storage params.
-This should also the settings for existing objects if they still
+This should also change the settings for existing objects if they still
 can be found.
 
   >>> import os