Showing posts with label recursive. Show all posts
Showing posts with label recursive. Show all posts

Saturday, 28 October 2023

A Summary of The Problems That Invalidate The Authors' Model Of Ideational Structure

Martin & Doran (2023: 44, 45):
By way of summarising our discussion we extend Table 1 above as Table 3 below, including English examples and filling out our paradigm for ideational structure.


The two central columns in Table 3 oppose non-recursive systems realised by non-iterative structures to recursive systems realised by iterative structures. This opposition is cross-classified by experiential as opposed to logical structure; logical structure is further classified as paratactic vs hypotactic, and within hypotactic structures are subclassified as progressive or regressive. The only structure type in the table not introduced above is non-iterative parataxis for which we suggest English correlative structures such as both…and, either…or, neither…nor (including perhaps the somewhat archaic the harder they come the harder they fall).

 

Blogger Comments:

[1] To be clear, Table 1 was from Halliday (1965):


[2] To be clear, the authors' update of Halliday (1965) is limited to the three types of non-iterative logical structures and the iterative experiential structure.

The mistaken notion of a non-iterative logical structure arose from not understanding that a two-unit complex (duplex) is specified by selecting 'stop' on the first pass through a recursive system. Having first misapplied a subjacency duplex structure to submodification in a Pitjantjatjara nominal group, the authors then applied it to other structures in other languages without providing argument as to why it was appropriate to do so.

The mistaken notion of an iterative experiential structure arose from not understanding that 'multiple Epithets' at the rank of group are realised by iterative logical structures at the rank of word. The authors compounded this error by proposing that two types of structure obtain within the one experiential structure of a nominal group.

By way of comparison, the current SFL model of structure type by metafunction is given by Halliday & Matthiessen (2014: 85):

Monday, 16 October 2023

The Argument For Subjacency Duplex Structure

Martin & Doran (2023: 41):
In this paper we have proposed a generalised analysis for explicitly modelling structure markers in functional grammar — namely subjacency duplex structure. In these structures the culminative β element (#β or β#) is realised by closed class items for which further systemic distinctions and concomitant structural expansion are not available. They are dependent on other items and cannot occur on their own. And except for some borderline cases discussed below, they cannot themselves be combined into complexes (although as Rose 2001, 2021 has proposed, there may be layering involved, with the α on which a subjacent β depends itself realised by a subjacency duplex).


Blogger Comments:

[1] To be clear, the subjacency duplex structure was proposed on the pretext that submodification of the nominal group in Pitjantjatjara is not realised by a recursive system. This was demonstrated to be untrue, since even a two-unit complex (duplex) requires the selection of the feature 'stop' in a recursive system.

This structure was then applied to instances that were not cases of submodification, including structure markers, with no argument provided as to why it was appropriate to do so. The many problems that arise from doing so have been identified in previous posts.

[2] To be clear, Matthiessen (1995: 600-2) proposes a textual system of CULMINATION, at clause rank, as a written mode analogue of spoken mode INFORMATION. The authors, however, just use 'culminative' to mean 'final', without any acknowledgement of Matthiessen.

Thursday, 12 October 2023

Confusing Group Rank With Word Rank

Martin & Doran (2023: 39, 40):
To this point in our discussion we have focused on structure, without looking carefully at the systems from which our structures derive. One systemic implication arising has to do with the need to distinguish two different types of recursive system — namely recursive systems giving rise to serial logical structures (whether paratactic or hypotactic) as opposed to recursive systems giving rise to iterating elements of experiential structure. 
For English EPITHESIS for example we need to distinguish between systems underpinning indefinitely extendable regressive grading complexes (a not much more glorious history) and systems underpinning multiple Epithets (their long glorious well-documented history). 
One possibility would be to retain standard SFL recursive system notation for paratactic and hypotactic series (e.g. the grading system in Figure 4 to generate not much more glorious history) and use an ‘ⁿ’ superscript on the relevant feature for experiential iteration (e.g. the [describedⁿ] option in Figure 4 to generate long glorious well-documented history). 
Formulated along these lines Figure 4 thus includes one non-recursive DEIXIS system (from which a single Deictic function can be derived), one recursive EPITHESIS system (from which multiple Epithets can be derived) and one recursive GRADING system (from which a hypotactic series can be derived).


Blogger Comments:

[1] To be clear, as previously demonstrated, the recursive systems that specify these iterative structures are at word rank, not group rank, and the structures are logical, word complexes, not experiential.

[2] To be clear, Figure 4 confuses systems at group rank that specify multivariate structures, with the systems at word rank that specify the univariate structures that realise submodification at group rank.

Sunday, 8 October 2023

Why Subjacency Duplexes Are Passed Over In Functional Grammar Descriptions

Martin & Doran (2023: 38):
As we can see, subjacency duplex analysis adds layers of structure to tables (or trees). This is inevitable if we strictly follow the principle that classes are realised by grammatical functions (such as α β# or #β α) and functions in turn by classes as we move from higher ranks to lower ones (shifting perspective back and forth between syntagm and structure as we go). This does present a problem, however, if we want to use our tables (or trees) to reflect grammatical complexity (Halliday 2008). Unlike serial complexing (the resource expanding the meaning potential of spoken language) or embedding (the resource expanding the meaning potential of written language), layers of subjacency structure do not reflect systemic choices of their own — they are part of the realisation of choices in other implicating systems. Put another way, they don’t add an extra layer of meaning to the structures with which they are involved. This is possibly why they are passed over in many functional grammar descriptions, especially where the goal is text analysis (following, for example, Halliday 1985 and its subsequent 1994 edition) rather than a comprehensive description.


Blogger Comments:

[1] This is misleading. In SFL Theory, structures realise systems. In the authors' own model, subjacency duplexes are said to be logical structures that realise non-recursive systems, so this claim is even inconsistent with their own model. 

Importantly, the problem that the authors are trying to conceal here is that it is not possible to specify the entry condition for a system that specifies a subjacency duplex. This is because the entry conditions for grammatical systems are units on the rank scale, and, unlike all other complexes, a subjacency duplex is not the expansion of a rank unit, since a subjacency is not a rank unit.

[2] To be clear, if subjacency duplexes do not "add an extra layer of meaning", they do not serve any function, and so do not add any explanatory potential. In fact, as previous posts have demonstrated, a subjacency duplex analysis provides less explanatory potential than the original theory that the authors simply misunderstand.

[3] This is very misleading indeed. On the one hand, it sets up a false dichotomy: text analysis vs comprehensive description — one does not exclude the other — and on the other hand, it falsely claims that Halliday (1985; 1994) are not comprehensive descriptions.

To be clear, the reason why subjacency duplexes are "passed over" in all functional grammar descriptions not carried out by Martin and his former students, is that they only arise from misunderstandings of theory. These misunderstandings include taking the view from below, instead of the view from above, misunderstanding at which rank logical structures are located, not understanding recursive systems, not understanding iterative structures, mistaking adpositions for structure markers, and so on.

Monday, 18 September 2023

A Fundamental Problem With The Notion Of A Subjacency Duplex

Martin & Doran (2023: 32):
The α β# / #β α notation for duplexes has been selected to 
(i) capture the dependency relation involved (resonating with hypotaxis notation in SFL description) and 
(ii) to reflect the use of # to mark the beginning and end of elements of structure (in SFL realisation statements). 
Although it has a different meaning in formal linguistics (Chomsky 1973), the term subjacency nicely captures the sense in which duplexes involve adjacent elements with one element dependent on the other. To avoid confusion these structures (referred to as subjacency structures in Martin et al. 2021) can be termed ‘subjacency duplexes’ in SFL (following Rose 2021; Stosic 2021; Hao and Wang 2022; Doran and Bangga 2022).


Blogger Comments:

[1] It will be seen in later posts that this dependency notation is applied where no dependency relation obtains.

[2] As previously explained, the end of a logical structure is specified by the selection of the feature 'stop' in its recursive system.

[3] To be clear, in SFL Theory, a duplex is a two-unit complex, and all complexes are complexes of rank units (clause, group, word, morpheme). The authors' notion of a 'subjacency duplex' is not only inconsistent with the notion of complex, it provides no means of locating its system on the grammatical stratum, because units on the rank scale are the entry conditions for grammatical systems.

[4] To be clear, these are the works of Martin's former students, acting under his direction. 

Thursday, 14 September 2023

Misconstruing Word Rank Iterative Logical Structures As Group Rank (i) Iterative Experiential Structures And (ii) Non-Iterative Logical Structures

Martin & Doran (2023: 31):
The discussion in this section indicates that we need to loosen up the association of experiential and logical meaning with specific types of system and structure – as outlined in Table 2 (setting aside paratactic complexing to simplify the discussion here). 
For experiential meaning the table draws on the contrast in English between a Deictic Numerative Thing structure for which non-recursive systems insert each function once and Epithet Thing Qualifier structures for which recursive systems allow for multiple Epithets and Qualifiers independently modifying the Thing (notated with an “ⁿ” superscript below). 
For logical meaning the table contrasts duplexes deriving from non-recursive systems with series deriving from recursive ones (e.g. the contrast between Pitjantjatjara and English, for example, as far as grading is concerned). The notation allows for both progressive and regressive duplexes and series (i.e. “left-headed” α β… vs “right-headed” β α dependency structures). And duplexes are distinguished from series by marking their culminative dependent β element with “#”.

Blogger Comments:

[1] This is misleading, because it is untrue. As previously demonstrated, the authors' notion of a non-recursive system and non-iterative structure for a logical structure is based on their misunderstanding of the nature of recursive systems and the iterative structures that realise them. And the authors' notion of a recursive system and iterative structure for experiential structure is based on mistaking recursive systems and iterative structures of the logical metafunction at word rank for recursive systems and iterative structures of the experiential metafunction at group rank.

That is, what the authors presented as a non-iterative logical structure at group rank was an iterative logical structure at word rank: a two-unit hypotactic word complex. And what the authors presented as an iterative experiential structure at group rank was actually an iterative logical structure at word rank: a hypotactic word complex realising an Epithet.

[2] As previously explained, here the authors misconstrue the word rank iterative logical structures that can realise elements of group structure as iterative experiential structures at group rank. But here they also create theoretical inconsistency by proposing different structural types obtaining between different elements of the same unit. 

[3] As previously explained, here the authors misconstrue the word rank iterative logical structure that realises a submodified Epithet as a group rank non-iterative structure. But here they also create theoretical inconsistency by proposing different logical structural types obtaining between different experiential elements of the same unit.

[4] To be clear, Matthiessen (1995: 600-2) proposes a textual system of CULMINATION, at clause rank, as a written mode analogue of spoken mode INFORMATION. The authors, however, just use 'culminative' to mean 'final', without any acknowledgement of Matthiessen.

Tuesday, 12 September 2023

Misunderstanding Recursive Systems

Martin & Doran (2023: 30-1):
What about the link between “logical” systems and iterative structures?
Rose (2001, 2021) presents overviews of logical resources in Western Desert (Pitjantjatjara), taking into account the possibility of what he calls simplexes, duplexes and serieswith the choice of series leading to a recursive system realised by iterative structure. For nominal group choices, he notes that the series option is not available for grading within Epithets. So an adjective can be graded once, but we do not find series such as very much more difficult. An example of a grading duplex is presented in (17), adapted from Rose (2021:70).
Rose (2021) further reports that paratactic series are possible for Pitjantjatjara groups and words in general, but that hypotactic relations at these ranks (and certain choices at clause rank) are restricted to duplexesin orbital terms a head and just one dependent satellite. His work thus documents the possibility of logical systems realised by non-iterative structures.


Blogger Comments:

[1] To be clear, even Rose (2001: 368) acknowledges that he took the terms 'simplex' and 'duplex' from Matthiessen (1995).

[2] To be clear, this misunderstands the basic nature of a recursive system. A recursive system is one which provides the option of re-entering the same system.  Halliday & Matthiessen (2014: 438) provide an example:

In the case of a simplex, a single rank unit, the RECURSION system is not entered, because the system is a means of specifying iterative structures (complexes). In the case of a duplex, a two-unit complex, the feature 'stop' is selected (along with the other features that specify the tactic and logico-semantic relations of the complex). In the case of a "series", a complex of three or more units, the feature 'go on' is selected, and the system is re-entered, and either 'stop' or 'go on' is then selected, depending on how many units in the complex.

[3] To be clear, the 'grading within Epithets' is realised by a two-unit word complex, an iterative structure realising a recursive system at word rank. In this case, the recursive system is entered, and the feature 'stop' is selected, as explained above.

[4] To be clear, Rose's 'grading duplex' is simply the word complex that realises the submodification in the nominal group:

[5] To be clear, Martin proposes orbital structure as experiential, but here the authors have used it to describe a hypotactic logical structure. As previously observed, Martin's orbital structure misconstrues multivariate experiential structure as hypotactic logical structure. Here the authors reveal that misunderstanding themselves.

[6] This is misleading, because it is not true. Rose's work does not document the possibility of logical systems realised by non-iterative structures, because it presents an iterative structure, a two-unit word complex, that realises a recursive system, as demonstrated above.

Sunday, 10 September 2023

Falsely Claiming That Multivariate Structures Involve Recursive Systems

Martin & Doran (2023: 30):
To this point we have established that what have been traditionally viewed as nominal group multivariate structures in fact involve both non-recursive systems (responsible for English Deictic, Numerative and Thing functions for example) and recursive systems (as exemplified by English Epithets and Qualifiers above).

 

Blogger Comments:

This is misleading, because it is not true. The authors have not established that multivariate structures of the nominal group involve recursive systems. As previously demonstrated, the recursive system involved for multiple Epithets is located at word rank, and is realised by a univariate structure, a word complex, that serves as an Epithet at group rank. The example presented as multiple Qualifiers was a single Qualifier realised by an embedded clause complex. In this case, the recursive system involved also specified a univariate structure: the logically related interdependent clauses that were embedded as Qualifier.

Friday, 8 September 2023

Misrepresenting Recursive Systems As Specifying Experiential Structures

Martin & Doran (2023: 30):
The possibility of multiple Epithets (English) and Qualifiers (Korean and English) indicates that too strict an association of non-recursive systems with experiential structure is not tenable. Recursive systems clearly underlie both the English Epithets and Korean Epithets and Qualifiers exemplified above.
⁷ At first blush Halliday’s (1985) analysis of English Classifiers would appear to exemplify a comparable pattern. But English Classifiers do not each independently modify the Thing (the structure is serial not orbital). In fact structures of this kind would be better modelled as hypotactic word complexes recursively taxonomising the entity construed by the Thing function (see Martin et al. 2021 for discussion).


Blogger Comments:

[1] To be clear, this is misleading because it is untrue. The 'multiple Epithets' example demonstrated that the experiential function is realised by a logical structure at word rank: a paratactic or hypotactic word complex. The 'multiple Qualifiers' example featured an embedded clause complex serving as a single Qualifier.

[2] To be clear, firstly, this misconstrues experiential structure (the Classifier–Thing relation) as logical ('modify', 'serial'). Secondly, it claims that both the Classifier and the Thing are both Heads, since Martin's serial structure is 'multi-nuclear'. Thirdly, Martin's serial structure misconstrues univariate structure as parataxis ('multi-nuclear'). Fourthly, it proposes a different structure type (serial) for just two elements of a nominal group: Classifier(s) and Thing. 

[3] This is misleading. Firstly, the notion that the Classifier 'taxonomises' the Thing is Halliday (1985), not Martin (2021). Halliday (1985: 160, 164):

This is an experiential structure which, taken as a whole, has the function of specifying (i) a class of things, namely trains, and (ii) some category of membership within this class. We shall refer to the element expressing the class by the functional label Thing. … 
The Classifier indicates a particular subclass of the thing in question, e.g. electric trainspassenger trains, wooden trains, toy trains.
Secondly, the notion that a Classifier can be realised by a hypotactic word complex is Halliday (1985), not Martin (2021), as expressed in Matthiessen (1995: 665):
CLASSIFICATION is the resource for specifying successively more specific classes of a thing; it is used to represent taxonomies. Table 7-14 presents a few examples from geology.

The recursive system is, of course, logical and at word rank.