Documentation

Studies.McCarthy2005

McCarthy (2005): Optimal Paradigms #

This file formalizes optimal paradigms after [McC05]. Entire inflectional paradigms are candidates: markedness and input–output faithfulness are summed over the members, and the stem of every member stands in a correspondence relation with the stem of every other, with no distinguished base, the symmetric counterpart of the base priority of [Ben97], which optimal paradigms leave to derivational morphology. Faithfulness on that relation resists alternation within the paradigm, and three consequences follow from the architecture alone: overapplication only, attraction to the unmarked, and majority rules. A paradigm carries the shared input and its members with their cells, surface stems, and input–stem correspondences (Paradigm), the correspondence diagram is read off those (Paradigm.corr), symmetric and base-free by construction, and markedness, ioFaith, and opFaith sum a constraint over the members or the ordered member pairs. The Classical Arabic tableaux for the right and left edges of the verb stem and for geminate verbs, the Moroccan majority-rules paradigm, and the Hebrew jussive paradigms of Benua are rerun under the paper's ranking.

References #

Paradigms as candidates #

The roles of a candidate paradigm: the shared input stem and the stem of each member.

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    def McCarthy2005.instReprRole.repr :
    Role → ℕ → Std.Format
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      structure McCarthy2005.Member (α : Type u_3) (ι : Type u_4) :
      Type (max u_3 u_4)

      A paradigm member: its inflectional cell, its surface stem, and the correspondence from the input to the stem.

      • cell : ι
      • stem : List α
      • io : List (ℕ × ℕ)
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        structure McCarthy2005.Paradigm (α : Type u_3) (ι : Type u_4) :
        Type (max u_3 u_4)

        A candidate paradigm (2a): the inflected forms of one input stem.

        • input : List α
        • members : List (Member α ι)
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          def McCarthy2005.Paradigm.stem {α : Type u_1} {ι : Type u_2} (P : Paradigm α ι) (i : ℕ) :
          List α

          The stem of the ith member, empty beyond the paradigm.

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            def McCarthy2005.Paradigm.io {α : Type u_1} {ι : Type u_2} (P : Paradigm α ι) (i : ℕ) :
            List (ℕ × ℕ)

            The input correspondence of the ith member, empty beyond the paradigm.

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              def McCarthy2005.compose (l₁ l₂ : List (ℕ × ℕ)) :
              List (ℕ × ℕ)

              The positions of two stems that realise the same input position.

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                def McCarthy2005.epenthetic (l : List (ℕ × ℕ)) (n : ℕ) :
                List ℕ

                The positions of a stem of length n without an input correspondent.

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                  def McCarthy2005.site (l : List (ℕ × ℕ)) (p : ℕ) :
                  Option ℕ

                  The site of a stem position: the last input position realised at or before it.

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                  • McCarthy2005.site l p = (List.map Prod.fst (List.filter (fun (rp : ℕ × ℕ) => decide (rp.2 ≤ p)) l)).max?
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                    def McCarthy2005.opPairs (l₁ l₂ : List (ℕ × ℕ)) (n₁ n₂ : ℕ) :
                    List (ℕ × ℕ)

                    ℛ_OP between two stems of lengths n₁, n₂ with input correspondences l₁, l₂: the positions realising the same input position, and the epenthetic positions at the same site.

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                      The correspondence diagram of a candidate (2c): each member's input–stem relation, and between the stems of distinct members the relation ℛ_OP of opPairs.

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                        def McCarthy2005.markedness {α : Type u_1} {ι : Type u_2} (m : ι → List α → ℕ) :

                        A markedness constraint on the word of each cell, summed over the members (2b).

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                          An input–output faithfulness constraint summed over the members (2b).

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                            An OP faithfulness constraint (2d): a correspondence constraint summed over the ordered pairs of distinct members.

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                              def McCarthy2005.tableau {α : Type u_1} {ι : Type u_2} {L : Type u_3} [DecidableEq L] (cand : L → Paradigm α ι) (labels : List L) (ranking : List (OptimalityTheory.Constraint (Paradigm α ι))) (h : labels ≠ [] := by decide) :

                              The tableau of the labelled candidate paradigms under a ranking.

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                                The candidate paradigms of a tableau.

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                                  def McCarthy2005.instReprCand.repr :
                                  Cand → ℕ → Std.Format
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                                    Palatalization before -i (§8.2) #

                                    From /mat/ with the plural suffix -i, the paradigm ⟨mat, maʧi⟩ draws two OP-IDENT(high) marks, one on each direction of ℛ_OP, and ⟨ma, maʧi⟩ one OP-MAX and one OP-DEP mark (fn. 5).

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                                        ⟨mat, maʧi⟩.

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                                          ⟨ma, maʧi⟩.

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                                            Arabic syllables and feet #

                                            The markedness constraints of §8.4 read syllable weight and foot structure. Each vowel is a nucleus, long or short by weight; the consonants before a vowel but the last, its onset, close the preceding syllable. Feet are right-to-left moraic trochees with the final syllable extrametrical, as the paper assumes; SWP marks a stressed light syllable, so an (LL) foot.

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                                              def McCarthy2005.Arabic.instReprSeg.repr :
                                              Seg → ℕ → Std.Format
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                                                  A syllable by its nucleus and coda.

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                                                    def McCarthy2005.Arabic.instDecidableEqSyllable.decEq (x✝ x✝¹ : Syllable) :
                                                    Decidable (x✝ = x✝¹)
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                                                          def McCarthy2005.Arabic.closeLast (coda : List Seg) :
                                                          List Syllable → List Syllable

                                                          Close the latest syllable with coda.

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                                                            def McCarthy2005.Arabic.syllabifyRev :
                                                            List Syllable → List Seg → List Seg → List Syllable

                                                            The syllables of a word, latest first: a vowel opens a syllable, the consonants pending before it but its onset close the previous one, and the final consonants close the last.

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                                                              def McCarthy2005.Arabic.footRev (pending : Option Syllable) :
                                                              List Syllable → List (List Syllable)

                                                              Right-to-left moraic trochees over syllables listed latest first, carrying a light syllable awaiting a partner: a heavy syllable is a foot, two light syllables are a foot, a lone light syllable is unparsed.

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                                                                def McCarthy2005.Arabic.feet (w : List Seg) :
                                                                List (List Syllable)

                                                                The feet of a word, the final syllable extrametrical unless nothing else can be footed (fn. 22).

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                                                                  def McCarthy2005.Arabic.swp (w : List Seg) :
                                                                  ℕ

                                                                  SWP: stressed light syllables, the heads of (LL) feet.

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                                                                    Superheavy syllables, parsed with a moraic coda (*µµµ]σ) or a syllable appendix (*APP-σ).

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                                                                      ALIGN-L(Stem, σ): a stem-initial consonant before another is never syllable-initial.

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                                                                        *.CᵢV.CᵢV: identical consonants in the onsets of successive syllables.

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                                                                          An inflectional cell of the Classical Arabic verb or noun: its affixes, and whether a superheavy coda is parsed as an appendix.

                                                                          • prefixes : List Seg
                                                                          • suffixes : List Seg
                                                                          • appendix : Bool
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                                                                            def McCarthy2005.Arabic.instDecidableEqCell.decEq (x✝ x✝¹ : Cell) :
                                                                            Decidable (x✝ = x✝¹)
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                                                                              def McCarthy2005.Arabic.instReprCell.repr :
                                                                              Cell → ℕ → Std.Format
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                                                                                def McCarthy2005.Arabic.Cell.word (c : Cell) (stem : List Seg) :
                                                                                List Seg

                                                                                The word of a stem in a cell.

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                                                                                  The Classical Arabic verb (§8.4) #

                                                                                  Verb stems end in CVC] and may begin with [CCV; noun stems may end in CVːC] or CVCC] and begin only with [CV. Verbs alone have C-initial suffixes and CV- prefixes: before a C-initial suffix a superheavy coda is shortened or broken up and OP faithfulness carries the repair through the paradigm; after a CV- prefix SWP blocks the epenthesis that alignment would force into a stem-initial cluster, and OP faithfulness carries the blocking to the unprefixed forms. The noun's one-member paradigms leave each form to markedness alone.

                                                                                  *µµµ]σ.

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                                                                                    *APP-σ.

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                                                                                      The summary ranking (21): IO-MAX-V, OP-DEP-V, *µµµ]σ, *APP-σ, IO-MAX-C, OP-IDENT-WT >> SWP >> ALIGN-L(Stem, σ) >> IO-DEP-V >> IO-IDENT-WT.

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                                                                                        The 3sg.m. perfective, suffix -a.

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                                                                                          The 3sg.m. imperfective, ja- … -u.

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                                                                                            The paradigms of /faʕaːl/ in (12): shortened throughout, long throughout with the superheavy coda an appendix or moraic, or alternating.

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                                                                                              (12): the long vowel of /faʕaːl/ is shortened throughout the paradigm, ⟨faʕala, faʕaltu⟩ — overapplication of closed-syllable shortening, under OP-IDENT-WT >> IO-IDENT-WT.

                                                                                              The paradigms of /faʕl/ in (13): epenthesis throughout, the cluster kept throughout with the superheavy coda an appendix or moraic, or alternating.

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                                                                                                A vowel epenthesized into the final cluster.

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                                                                                                  (13): epenthesis into the final cluster of /faʕl/ carries through the paradigm, ⟨faʕila, faʕiltu⟩, under OP-DEP-V >> IO-DEP-V.

                                                                                                  The paradigms of /faʕal/ in (17): the (LL) feet kept, or syncopated.

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                                                                                                      (17): SWP cannot force syncope, IO-MAX-V >> SWP.

                                                                                                      The noun /fʕal/ with the case suffixes in (24): epenthesis, or the initial cluster.

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                                                                                                          (24): a [CCV noun stem is broken up by epenthesis, which SWP does not block in a prefixless paradigm, ALIGN-L(Stem, σ) >> IO-DEP-V.

                                                                                                          def McCarthy2005.Arabic.verbal (pfA pfTu impfU impfNa : Member Seg Cell) :
                                                                                                          List (Member Seg Cell)

                                                                                                          The four representative cells of a verbal paradigm: the perfectives -a, -tu and the imperfectives ja-…-u, ja-…-na.

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                                                                                                            The paradigms of the eighth conjugation /ftaʕal/ in (19) and (25): the initial cluster kept throughout, epenthesis throughout, or epenthesis in the unprefixed forms only.

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                                                                                                                The imperfective stem vowel.

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                                                                                                                      (25): attraction to the unmarked — the prefixed jaftaʕilu, where epenthesis would make an (LL) foot, is the attractor, and ftaʕala keeps its misaligned cluster: OP-DEP-V >> SWP >> ALIGN-L(Stem, σ).

                                                                                                                      The paradigms of /stafʕaːl/ in (27), the candidates obeying the undominated constraints: levelled to the short, unepenthesized stem; epenthesized throughout; long before V-initial suffixes; epenthesized in the perfectives; or both.

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                                                                                                                                    (27): different members attract different edges — the prefixed imperfectives block epenthesis at the left edge via OP-DEP-V, the C-suffixed forms force shortening at the right edge via OP-IDENT-WT — under the single ranking (21).

                                                                                                                                    Domination of OP faithfulness (§8.4.4) #

                                                                                                                                    Geminate verbs delete the vowel between their identical consonants before V-initial suffixes, ħmarra ~ ħmarartu, so *.CᵢV.CᵢV dominates IO-MAX-V and OP-MAX-V (29).

                                                                                                                                    The paradigms of /ħmarar/ in (29): the vowel deleted before V-initial suffixes, or kept throughout.

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                                                                                                                                            (29): normal application — neither levelling wins, the vowel/zero alternation staying in the paradigm, *.CᵢV.CᵢV >> IO-MAX-V, OP-MAX-V.

                                                                                                                                            Moroccan Arabic majority rules (§8.5.1) #

                                                                                                                                            Schwa is banned from open syllables and triconsonantal clusters are prohibited, so the phonology fixes CCəC before C-initial and CəCC before V-initial suffixes; the unaffixed verb joins the larger class, ʃrəb, whereas nouns — paradigms of one — follow SONCON.

                                                                                                                                            *ə]σ.

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                                                                                                                                              def McCarthy2005.Arabic.ccc :
                                                                                                                                              List Seg → ℕ

                                                                                                                                              *CCC.

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                                                                                                                                                SONCON (30), on a word of three consonants and a schwa: CəC₂C₃ wants C₂ more sonorous than C₃, CC₂əC₃ not.

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                                                                                                                                                  The ranking of (32): *ə]σ, *CCC >> OP-MAX-V >> SONCON >> IO-MAX-V, IO-DEP-V.

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                                                                                                                                                    def McCarthy2005.Arabic.ccec (suffix : List Seg) :
                                                                                                                                                    Member Seg (List Seg)

                                                                                                                                                    A CCəC member from /ʃərb/: the input schwa deleted, a schwa epenthesized.

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                                                                                                                                                      def McCarthy2005.Arabic.cecc (suffix : List Seg) :
                                                                                                                                                      Member Seg (List Seg)

                                                                                                                                                      A CəCC member from /ʃərb/.

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                                                                                                                                                        The suffixes of the perfective paradigm (31): none, four C-initial, two V-initial.

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                                                                                                                                                          The paradigms of /ʃərb/ in (32): the unaffixed verb CCəC or CəCC with the rest fixed by the phonology, or levelled to CCəC or to CəCC throughout.

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                                                                                                                                                            (32): majority rules — the unaffixed ʃrəb joins the five CCəC members against the two CəCC members, OP-MAX-V being violated once in each direction by every CCəC–CəCC pair (twenty against twenty-four marks).

                                                                                                                                                            Tiberian Hebrew jussives (§8.5.2) #

                                                                                                                                                            The jussive truncates the final vowel of the imperfective, jibkɛ ~ jeːbk, and the final cluster is not broken up by the epenthesis nouns undergo — the underapplication [Ben97] derives from base priority. Under OP every candidate loses a vowel to truncation, and ⟨jibkɛ, jeːbk⟩ wins because its levelled rival ⟨jibəkɛ, jibɛk⟩ puts a schwa between an open and a following syllable, *VCəCV >> OP-MAX-V >> *CC# (33); into a rising-sonority cluster epenthesis applies in the jussive alone, SON-CON >> OP-MAX-V (fn. 34). The segments and the markedness constraints are those of the [Ben97] study, whose winners the OP tableaux reproduce.

                                                                                                                                                            *VCəCV: a vowel between an open syllable and a following one.

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                                                                                                                                                              *VCəCV, SON-CON >> OP-MAX-V >> *CC#.

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                                                                                                                                                                The paradigms of an imperfective and its truncated jussive from a stem ending in the cluster x y: the cluster kept, epenthesis throughout, or epenthesis in the jussive alone.

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                                                                                                                                                                    (33): jibkɛ ~ jeːbk 'cry' — the cluster is kept, overapplication of epenthesis being blocked.

                                                                                                                                                                    fn. 34: jɛɣlɛ ~ jɛɣɛl 'uncover' — into a rising-sonority cluster epenthesis applies in the jussive alone, OP-MAX-V being dominated by SON-CON.