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AW: [EmotionML] implementation release and feedbacks

From: <Felix.Burkhardt@telekom.de>
Date: Thu, 2 May 2013 12:00:00 +0200
To: <alexandre.denis@loria.fr>, <www-multimodal@w3.org>, <Samuel.Cruz-Lara@loria.fr>
Message-ID: <05C81A773E48DD49B181B04BA21A342A2BBAD6A4A9@HE113484.emea1.cds.t-internal.com>
Congratulations, Alexandre

>Sorry to give you more work!
Not at all, I'm indeed very happy you work with EmotionML and grateful you do such a thorough job in revising it!
It's just it'll take me/us some time to react on this, sorry about this.

Kind regards,
Felix

Von: Alexandre Denis [mailto:alexandre.denis@loria.fr]
Gesendet: Donnerstag, 2. Mai 2013 11:43
An: www-multimodal@w3.org; Samuel CRUZ-LARA
Betreff: [EmotionML] implementation release and feedbacks

Hello all,
I'm happy to announce that we released the very first version of our EmotionML Java implementation. It is hosted on google code and released under the MIT license: https://code.google.com/p/loria-synalp-emotionml/
It is still considered as an alpha version, we would need some users to validate its use. And there is still some work on the documentation but the core of the code is there.

If we could be listed as an implementation in the next round of the implementation report it would be nice. Here is the description:

Alexandre Denis, LORIA laboratory, SYNALP team, France
The LORIA/SYNALP implementation of EmotionML is a Java standalone library developed in the context of the ITEA Empathic Products project by the LORIA/SYNALP team. It enables to import Java objects from EmotionML XML files and export them to EmotionML as well. It guarantees standard compliance by performing a two steps validation after all export operations and before all import operations: first the EmotionML schema is tested, then all EmotionML assertions are tested. If one or the other fails, an error message is produced and the document cannot be imported or exported. The library contains a corpus of badly formatted EmotionML files that enables to double check if both the schema and the assertions manage to correctly invalidate them. The API is hosted on google code (https://code.google.com/p/loria-synalp-emotionml/) and is released under the MIT License.


Moreover I don't come to you with empty hands, and I have a bunch of remarks related to the EmotionML specification. Sorry to give you more work!
best regards,
Alexandre Denis


*** Comments about EmotionML specification

In what follows:
- "specification" refers to the document at http://www.w3.org/TR/2013/PR-emotionml-20130416/ (version of 16 April 2013)
- "assertions" refers to the list of assertions at http://www.w3.org/2002/mmi/2013/emotionml-ir/#test_class
- "schema" refers to the schemas http://www.w3.org/TR/emotionml/emotionml.xsd and http://www.w3.org/TR/emotionml/emotionml-fragments.xsd


** Specification clarification questions
- About relative and absolute timing ?
            - Is that possible to mix relative and absolute timing ? Intuitively this would seem weird but nothing in the
            specification prevents it.

- About consistency of start/end/duration ?
            - I think the specification does not enforce the consistency of start, end and duration which are
            possible alltogether. Hence it is possible to have inconsistent triplets (start=0, end=5, duration=10).

- About text nodes ?
            - the emotion element can have text nodes children, it is not specified how many. Is it possible to intersperse text nodes all over
            an emotion element ? The fact that an emotion element can have text children is not specified in its children list.

- About emotion children combinations ?
            - the specification states "There are no constraints on the combinations of children that are allowed.", it is maybe confusing since
            an emotion cannot contain two categories that belong to different category-sets or two categories with the same name.

- About default values ?
            - some attributes have default values (reference role, time ref anchor point, duration, etc.), is it desirable to have a default
            value also for other attributes, especially for the "value" attribute ? For instance, how would you compare <category name="surprise"/>
            and <category name="surprise" value="1.0"/> ? Are they semantically equivalent ? A similar question could be made about the "confidence"
            attribute, how would you compare <category name="surprise"/> and <category name="surprise" confidence="1.0"/> ?

- About the number of <trace> ?
            - the specification does not state clearly if it is possible to have several <trace> elements inside a descriptor, it is stated
            "a <trace> element". Maybe it should be stated "If present the following child element can occur one or more time: <trace>".
            The schema allows that. If this comment is accepted, the assertions 215, 224, 235, 245 should also be clarified.

- About conformance ?
            - In section 4.3, it is stated "It is the responsibility of an EmotionML processor to verify that the use of descriptor names and values
            is consistent with the vocabulary definition", which is true but incomplete with regards to the assertions,
            maybe it would be beneficial to specify all the assertions that are not under the schema responsability but rather the EmotionML processor
            (see below) or at least warn that there are many assertions not checked by the schema.


** Discrepancies between schema/assertions/specification
- Assertions not tested by the schema
            - I found that the following assertions are not tested by the schema : 114, 117, 120, 123, 161, 164, 167, 170, 172, 210, 212,
            216, 220, 222, 224, 230, 232, 236, 240, 242, 246, 410, 417.

            There are assertions that are impossible to test with a XSD schema I think:
                        114, 117, 120, 123, 161, 164, 167, 170 : vocabulary set id and type checking
                        212, 222, 232, 242 : vocabulary name membership
                        417 : media type (unless enumerating them)

            Some may be possible with some tweaking:
                        210, 220, 230, 240 : vocabulary set presence
                        216, 224, 236, 246 : <trace> and "value"

            There are two "true" errors I think:
                        172 : The "version" attribute of <emotion>, if present, MUST have the  value "1.0"
                                    I think it should not be "optional with default value 1.0" but rather "optional with fixed value 1.0"
                        410 : The <reference> element MUST contain a "uri" attribute
                                    the "uri" attribute is optional by default in the schema

- 2.4.1, "The end value MUST be greater than or equal to the start value",
            - the schema does not check it and there is no assertion enforcing it

- 2.1.2, "a typical use case is expected to be embedding an <emotion> into some other markup",
            - there is no assertion that describe that <emotion> may be embedded in another markup, does it imply we could embed other elements ?
            - is a document containing a sole <emotion> a valid document (not in the sense of <emotionml> document) ? If yes, maybe an assertion clarifiying the use of <emotion> would be useful.

- assertions 105, 155, 601, 606, status "Req=N"
            - the assertions mix the presence of <info> and the number of <info> elements, while the presence is not restricted, the number
            MUST be 0 or 1, hence the required status wrt this part of assertions should be "Req=Y"

- 2.1.2, "There are no constraints on the order in which children occur"
            - the schema does actually restrict the order of elements, <info> needs to be first, then the descriptors, then the references


** Invalid documents
(I have not systematically tested examples with non-valid vocabulary URIs such as http://www.example....)

- http://www.w3.org/TR/emotion-voc/xml does not comply with assertion 110 (hence all examples that refer to vocabularies there also fail)

- 2.3.3 The <info> element
            - The last example of this section does not comply with assertion 212 since the name "neutral" does not belong to every-day categories

- 5.1.1 Annotation of Text, "Annotation of text" Lewis Caroll example:
            - In the <meta:doc> element, the character & is found, which does not pass XML validation, it should be &amp; (so does the example below)
            - It also does not comply with assertion 212 since Disgust and Anger are not part of every-day categories
Received on Thursday, 2 May 2013 10:00:33 UTC

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