Changes between Version 43 and Version 44 of Taskforces/FCS/FCS-Specification-Draft

Timestamp:

11/10/15 14:16:20 (9 years ago)

Author:

Oliver Schonefeld

Comment:

• changed 'text' layer description, some notes about segmentation

Taskforces/FCS/FCS-Specification-Draft

@@ -422 +422 @@
 
 === Advanced Search
-The ''Advanced Search'' capability allows searching in annotated data. Queries can be across annotation layer, e.g. token and part-of-speech layer. CLARIN-FCS defined a set of searchable annotation layers with certain semantics and syntax. Endpoints `SHOULD` support as many different, of course depending on the resource type, annotation layers as possible.
+The ''Advanced Search'' capability allows searching in annotated data, that is represented in annotation layers. An annotation ''layer'' contains annotations of a specific type, e.g. lemma or part-of-speech layer. Queries can be across annotation layer.
+
+CLARIN-FCS defined a set of searchable annotation layers with certain semantics and syntax. Endpoints `SHOULD` support as many different, of course depending on the resource type, annotation layers as possible.
 
 ==== Layers #layers
+Each Layer is assumed to be ''segmented'', e.g. to allow for searching for a single lemma. However, CLARIN-FCS does not endorse a specific segmentation, i.e. the segmentation of Layers is in the domain of the Endpoint and ''opaque'' to CLARIN-FCS. CLARIN-FCS '''does not''' endorse nor assume a ''formal linguistic relation'' or ''formal linguistic hierarchy'' between two items on two different layers.
+
 ||=Layer Type Identifier =||=Annotation Layer Description                                =||=Syntax                          =||=Examples (without quotes)           =||
-|| `lemma`                || Lemmatisation of tokens                                     || ''String''                       || "good", "walk", "dog"             ||
+|| `text`                 || Textual representation of resource, also the layer that is used in [#basicSearch Basic Search] || ''String''                       || "Dog", "cat" "walking", "better"                ||
+|| `lemma`                || Lemmatisation                                               || ''String''                       || "good", "walk", "dog"             ||
 || `pos`                  || Part-of-Speech annotations                                  || [#REF_UD_POS Universal POS tags] || "NOUN", "VERB", "ADJ"                ||
 || `orth`                 || Orthographic transcription of (mostly) spoken resources     || ''String''                       || "dug", "cat", "wolking"              ||
 || `norm`                 || Orthographic normalization of (mostly) spoken resources     || ''String''                       || "dog", "cat", "walking", "best"              ||
 || `phonetic`             || Phonetic transcription                                      || [#REF_SAMPA SAMPA]               || "'du:", "'vi:-d6 'ha:-b@n"           ||
-|| `text`                 || Annotation layer that is used in [#basicSearch Basic Search] || ''String''                       || "Dog", "cat" "walking", "better"                ||
 
 The column ''Layer Type Identifier'' denotes the identifier for a layer. It is used in [#fcsQL FCS-QL] queries and the XML serialization for the [#advancedDataView Advanced Data View]. All valid identifiers are defined in the table above, all other identifiers are reserved and `MUST NOT` be used. Clients and Endpoints `MAY` create custom Layer Type Identifiers, e.g. for testing proposed. If they so so, the custom Layer Type identifiers `MUST` start with the String `x-`, e.g. `x-customLayer`.