sgaffigan posted on 01-19-2011 12:24 AM
Hello. I'm new to Infer.NET and am using it on OS X. In running the TwoCoins IronPython example I get an interface not found error (see below) during an import statement from the Distributions module (also see below). I'm running the Infer.NET 2.4
Beta 2 Release, with IronPython-2.6.2 through mono-2.8.2, on a Mac OS X 10.6.5 system. I also tried mono-2.8.1 but the exception still occurs.
Has anyone seen this error or have any suggestions on what might be going on?
System.ArgumentException: Interface not found
Parameter name: interfaceType
at System.Type.GetInterfaceMap (System.Type interfaceType) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Types.PythonType.AddSystemInterfaces (System.Collections.Generic.List`1 mro) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Types.PythonType.AddSystemBases () [0x00000] in <filename unknown>:0
at IronPython.Runtime.Types.PythonType.InitializeSystemType () [0x00000] in <filename unknown>:0
at IronPython.Runtime.Types.PythonType..ctor (System.Type underlyingSystemType) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Types.PythonType.GetPythonType (System.Type type) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Types.DynamicHelpers.GetPythonTypeFromType (System.Type type) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Operations.PythonTypeOps.GetSlot (Microsoft.Scripting.Actions.MemberGroup group, System.String name, Boolean privateBinding) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Operations.NamespaceTrackerOps.GetCustomMember (IronPython.Runtime.CodeContext context, Microsoft.Scripting.Actions.NamespaceTracker self, System.String name) [0x00000] in <filename unknown>:0
at IronPython.Runtime.Operations.PythonOps.ImportStar (IronPython.Runtime.CodeContext context, System.String fullName, Int32 level) [0x00000] in <filename unknown>:0
at Microsoft.Scripting.Interpreter.ActionCallInstruction`3[IronPython.Runtime.CodeContext,System.String,System.Int32].Run (Microsoft.Scripting.Interpreter.InterpretedFrame frame) [0x00000] in <filename unknown>:0
at Microsoft.Scripting.Interpreter.Interpreter.Run (Microsoft.Scripting.Interpreter.InterpretedFrame frame) [0x00000] in <filename unknown>:0
Probability both coins are heads:Compiling model...done.
Bernoulli(0.25)
Probability distribution over firstCoin:Compiling model...done.
Bernoulli(0.3333)
#---------------------------------------------------------------------------
# Infer.NET: IronPython script for two coins example
#---------------------------------------------------------------------------
import System,clr
from System import *
clr.AddReferenceToFile("Infer.Compiler.dll")
clr.AddReferenceToFile("Infer.Runtime.dll")
# import all namespaces
import MicrosoftResearch.Infer
import MicrosoftResearch.Infer.Models
import MicrosoftResearch.Infer.Distributions
from MicrosoftResearch.Infer import *
from MicrosoftResearch.Infer.Models import *
try:
from MicrosoftResearch.Infer.Distributions import *
except Exception, e:
print e
# The model
firstCoin = Variable.Bernoulli(0.5)
secondCoin = Variable.Bernoulli(0.5)
bothHeads = firstCoin & secondCoin
# The inference
ie = InferenceEngine()
print "Probability both coins are heads:", ie.Infer(bothHeads)
bothHeads.ObservedValue = False
print "Probability distribution over firstCoin:", ie.Infer(firstCoin)
Thanks for your help
