[Cs5500] Avatar Failed

[Madhuvanthi Balasubramanian]

Professor,

When an avatar sends a response, the following conditions are checked:

1. If we don't get a response, an exception is thrown
2. Avatar is kicked out if:
     domain is invalid
     proposedclaimmustbenew condition is not satisfied
     minproposals and maxproposals are exceeded
     invalid instance set in the claim
     invalid quality in the claim
     invalid confidence in the claim
     invalid number of oppose actions

So the only issue is with the print statement that is displayed when
condition (1) occurs .
I could use separate catch blocks for parse exceptions and other
exceptions.This is the only place the statement is ambiguous. Once the
claim gets past the catch block, all possible conditions from (2)  are
checked.  Please let me know your suggestions.


On Sun, Nov 6, 2011 at 9:48 PM, Karl Lieberherr <lieber at ccs.neu.edu> wrote:

> Hi Madhu:
>
> interesting. The avatar is a black box to us. It gets a request and we
> expect a timely response. If the response is untimely, we should say so.
> If we get a response, we analyze it carefully.
> If it does not parse, we tell them the first error.
> If it parses, but a proposed claim is illegal, we tell them which.
> if not all claims are opposed, ...
> if a provided instance does not belong to the instance set, ...
> ...
>
> Please can you check that all those issues are properly blamed.
>
> This is a high priority issue because if the students don't get targeted
> feedback,
> debugging becomes much more difficult. I have opened a discussion group.
>
>
> http://blackboard.neu.edu/webapps/portal/frameset.jsp?tab_tab_group_id=null&url=%2Fwebapps%2Fblackboard%2Fexecute%2Flauncher%3Ftype%3DCourse%26id%3D_671472_1%26url%3D
>
> -- Karl
>
>
> On Sun, Nov 6, 2011 at 9:21 PM, Madhuvanthi Balasubramanian <
> balasubramanian.m at husky.neu.edu> wrote:
>
>> Professor,
>>
>>     I agree that the current message is a little too ambiguous. I checked
>> the method that throws this message. This method gets Bob's response for
>> Alice's request, and is enclosed in a try-catch block. The message " cannot
>> handle invalid request" comes from the catch block that catches exceptions
>> of the type "Exception" and nothing narrower than that. So I assume this is
>> used to catch any kind of exception that the response from Bob can throw.
>> One of them is thrown when the avatars take too long to respond. There may
>> also be others such as nullpointer exceptions. So I am not sure how to
>> generalize this message. Could we add an additional statement that says
>> "Please check to make sure your solve method handles all kinds of
>> instances" ?
>>
>>
>> On Sun, Nov 6, 2011 at 9:09 PM, Karl Lieberherr <lieber at ccs.neu.edu>wrote:
>>
>>> Hi Madhu:
>>>
>>> thank you for checking that. We should strive for a good blame
>>> assignment and say:
>>> "avatar took too long to respond" in this case?!
>>>
>>> -- Karl
>>>
>>> On Sun, Nov 6, 2011 at 8:42 PM, Madhuvanthi Balasubramanian <
>>> balasubramanian.m at husky.neu.edu> wrote:
>>>
>>>> Greg,
>>>>       Your avatar may have taken a long time to respond to the
>>>> claims/instances from the other avatar. This is one reason it may have been
>>>> kicked out for the reason "avatar cannot handle valid request".
>>>>
>>>>
>>>> On Sun, Nov 6, 2011 at 7:49 PM, Karl Lieberherr <lieber at ccs.neu.edu>wrote:
>>>>
>>>>> Question from Greg.
>>>>>
>>>>> Should we improve the messages?
>>>>>
>>>>> -- Karl
>>>>>
>>>>> ---------- Forwarded message ----------
>>>>> From: Greg I Kerr <kerr.g at husky.neu.edu>
>>>>> Date: Sun, Nov 6, 2011 at 3:47 PM
>>>>> Subject: Avatar Failed
>>>>> To: Karl Lieberherr <lieber at ccs.neu.edu>
>>>>>
>>>>>
>>>>> Hi,
>>>>>
>>>>> When we tried to play the game our avatar was kicked out, but I am not
>>>>> sure what the history means exactly. It doesn't say a specific reason we
>>>>> were kicked out.
>>>>>
>>>>> Any idea?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Greg
>>>>>
>>>>>
>>>>
>>>>
>>>> --
>>>>  Thanks
>>>> - Madhu
>>>>
>>>>
>>>
>>
>>
>> --
>>  Thanks
>> - Madhu
>>
>>
>


-- 
 Thanks
- Madhu
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