Saturday, July 14, 2012

Semantics Roles


2.4  Semantic Roles
According to Crystal (2008: 428) semantic roles is the semantic relations that link a predicate to its arguments in the description of a situation. Additionally, every simple sentence, every proposition has one predicate and a varying number of referring expression (noun phrase) called arguments.  Hurford et al (2007) argue that the function of the predicate is to describe the specific relationship between the things, persons, etc. referred to, i.e. to describe how the things and/or people participate in the particular situation described.
According to Kreidler (1998: 66) that the predicate may be a verb, an adjective, and a preposition or noun phrase. The arguments which accompany the predicate have different functions, role in proposition. The meaning of predicate is determined by how many argument they have and what role those argument have. For example, a window broke, a plate broke, a rope all contains verb break and a single argument. In addition, other examples are the sentences Tom broke a window, Dick broke a plate, John broke a rope. A window, a plate, and a rope syntactically are object, but semantically, they have the role of affected. The words Tom, Dick and John have the role of agent. Different predicates (verbs, adjectives, prepositions) can be described according to the number of referring expressions, or arguments that can occur with them and the roles these arguments have. Furthermore, In order to portray semantic roles of the arguments, Kreidler (1998: 70) summarize it as seen in table 2.4 below.
Table 2.4 Semantic Role
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actor                The role of an argument that perform some actions without affecting any other entity. Sylvia left

affected           The role of an argument that undergoes due to some events or is affected by some entity. Tom broke a window

affecting          The role of an argument that, without any action, affect another entity. Betty like opera

agent               The role of argument that by its action affect some other entity. Tom broke a window

associate          The role of an argument that tells the status or identity other argument, the theme. Roger is a student

effect               The role of an argument that comes into the existence through the action of the predicate. Billy baked a pie

place                The role of an argument that names the location in which the action of the predicate occurs. The fireman climbed a ladder

theme              The role of an argument that is a topic of a predicate that does not express action-a stative predicate. Audrey is a computer expert
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According to Chafe (1981) as cited in Wagiman (2008) the roles of argument are divided into seven kinds namely: agent, patient, experincer, beneficiary, instrument, complement and location.
      Meanwhile, Hufford, et al (2007: 244-251) mention sort of argument roles namely:
1)      The agent of sentence is a person deliberately carrying out the action  describe for instance John in the sentence John opened the door with key.
2)      The patient (often called the affected) is a thing (not usually person, even though it may be) upon the action which is carried out, in many cases the things is affected by action for example door in the sentence above.
3)      The instrument is the thing (hardly ever a person) by means of which the action is carried out, the word the key as in the above sentence.
4)      Location or locative. It is played by any expression or argument referring to place in which the action described in that sentence takes place. For instance the word Rome in sentence Caesar was assassinated in Rome and the word Caesar plays role PATIENT (or affected).
5)      The beneficiary is the person for whose benefit or to whose detriment the action described by the sentence is carried out, as the word the prime minister in the sentence the terrorists sent the Prime Minister a letter bomb.
6)      The experiencer is a person who is mentally aware of, perceives or experiences the action or state described by the sentence, but who is not in control of the situation. Notice the word the children in the sentence the children heard the loud noise. In this sentence, the words the children plays role experiencer, whereas the word the loud noise takes role STIMULUS.
7)      Theme is a thing or person whose location is described or a thing or person which is perceived by an experience.
8)      Goal is the entity or place towards which something moves; and
9)      Source is the entity or place from which something moves
      Dealing with the number of argument roles, Crystal (2008: 428) point out that there is no general agreement on the number of participant roles available to speakers of languages, but he also mention some argument role such as instrument, theme, experincer, locative, source and goal. To describe this thematic relationship holding between verb and their argument, Foley and Van Valin propose a theory called semantic macroroles.

      2.4.1 Semantic Macroroles
Semantic macroroles is a development of role and reference grammar (RRG). In semantic macroroles as stated by Van Vallin in all his work that there are only two type of semantic role called actor and undergoer. Actor is a generalization across agent, experiencer, instrument, and other roles, while undergoer is a generalization subsuming patient, recipient, and other roles. Agen is prototype of actor and patient is the prototype for patient (Van Vallin, 1999; 2002).
Furthermore, he states that they are called macrorole since each represents a number of specific thematic relations such as agent, instrument, perceiver or recipient, patient, theme, stimulus, recipient source or perceiver in English. These thematic relations can serve as subject and direct object. Subject can be agent, instrument, perceiver or recipient, while direct object can be patient, theme, stimulus, recipient source or perceiver.
           Van Vallin (2002) points out that there is no direct correlation between macroroles and grammatical relations even in accusative language such as Brazilian, Portugese, and English.  This statement may be illustrated in the following sentences
(7)        a. The farmer           killed                   the duckling.
                 Actor(agent)                                   Undergoer (patient)

                        b. The duckling                 was killed    by the farmer.
                Undergoer (patient)                             Actor (Agent)

(8)        a. The rock                  broke               the window
                Actor (Instrument)                           Undergoer (Patient)

            b. The window     was broken         by the rock
                Undergoer (patient)                        Actor (instrument)

The grammatical relations are different in sentence (7a) and (7b), in which (7a), the farmer as the subject; the duckling as the direct object, whereas in sentence (7b), the duckling is as subject; the farmer as the object. Yet, thematic relations are same due to the role of subject of an active voice intransitive verb and the object of by in passive voice is an actor, and the role of the direct object of active voice transitive verb and the subject of a passive verb is undergoer. Simply, this can be said that in active voice the actor is subject and undergoer is direct object, whereas in passive voice, the undergoer is the subject and the actor is oblique adjunct. Likewise, in sentence (8a) and (8b), even the grammatical relations are different, but thematic relations are same.  Consequently, in semantic macrorole there is no change of role between actor and undergoer in clause in spite of their syntactic is changed.
           The argument as the actor and the undergoer is not randomly selected, but it must follows the hierarchy. Van Vallin (1999) proposes the actor and undergoer hierarchy (AUH) to explain the relationship between macroroles and the argument positions as seen in figure 2.1.
Figure 2.1: The actor undergoer hierarchy

ACTOR                                                                      UNDERGOER                                                                                  
 

Arg of             1st arg of          1st arg of          2nd arg of         arg of state
DO                  do’(x,…….pred’ (x , y)          pred’(x,y)       pred’(x)

            (           ‘ = increasing markedness of realization of argument as macrorole)

The basic idea of the AUH is that the leftmost argument in terms of the hierarchy will be the actor and the rightmost will be the undergoer. The argument of do is highest rank and acts as the actor, while the argument of pred’ (x) is the lowest rank and acts as the undergoer.  
           In RRG there is transitivity which functions to distinguish the number of syntactic argument a predicates takes in RRG, often called M-transitivity. There are three M-transitivity possibilities in RRG those are: transitive (2 macroroles), intransitive (1 macrorole), and atransitive (0 macroroles). Since some verbs maybe take only a single argument, AUH is not relevant to be applied here. Therefore, it follows the principles determining the M-transitivity. The default principle governs macrorole selection with all verb or other predicating elements.  The default Macrorole Assignment Principles as follows:
a.       Number: the number of macroroles a verb takes is less than or equal to the   number of arguments in its LS.
1.      If a verb has two or more arguments in its LS, it will take two macroroles.
2.      If a verb has one argument in its LS, it will take one macrorole.
b.      Nature: for predicates which have one macrorole,
1.      If the verb LS contains an activity predicate, the macrorole is actor.
2.      If the predicate has no activity predicate in its LS, it is undergoer.
              (Van Vallin, 2002)

2.5        Verb
Richard et al (2002) verb is a word that refers to an action or state. According to Crystal (2008: 510), verb is a term used in the grammatical classification of words which refers to a class traditionally defined as doing or actions words. Furthermore, Crystal explained that the formal definition of a verb refers to an element which can display morphological contrasts of tense, aspect, voice, mood, person and number. Functionally, it is the element which can be combined with other verbs (i.e. as a ‘verb phrase’). In many grammatical theories, accordingly, the verb is considered the most important element in sentence structure. Therefore, the verbs have an authority to choose the arguments which may occur with them.
In dealing with the arguments have, Kreidler (1998) stated that predicate (verbs, adjective, preposition) can have a valency. Valency is description of semantic potential of the predicates in term of the number and type argument which may occur with them. Further, he distinguishes valency into four kinds namely valency zero, one, two and three. This can be illustrated in the following sentences
(9)        a. It is snowing.
b. My brother snores.
c. Chris is making an omelet.
d. Agnes is writing her mother a letter.

From the sentences (9) a-d above, the verbs snow, sleep, make and write have different valencies those are respectively, valencies of zero, one, two and three and each of them is typical of a whole group of predicates.
Firstly, valency zero is predicates  that need only one argument as the subject, but it doesn’t correspond anything. For instance the English verb snow in the sentence a above. In this sentence it as the subject, but it doesn’t refer anything in underlying proposition. The other examples are rain, sleet, thunder. Those words are called zero-argument verb. Secondly, valency one is predicates that requires only one argument as the subject without object. For example the word  snore in my mother snore. The verb snore only need a subject my mother. It is called one argument verb.  Thirdly, valency two is predicates that need two arguments as the sentence c above. Ultimately, valency three is that need three arguments as the sentence d above. It has three arguments like Agnes, her mother, and a letter (pg. 69-76).
Similarly, Jackendoff in his paper writes the basic taxonomy of argument structure including zero argument verbs, one argument verb, two argument verb and three argument verbs  Bob gave Janice some breakfast for example.

2.5.1        Verb Semantic Classes
The Case Grammar model and Role and Reference Grammar (RRG) underlie the verb classification. There are three works of verb classification based on the case grammar model. One of the most well-known is Chafe's verb classification. Chafe (1981) in Wagiman (2008) distinguishes four types: states, processes, actions, and action processes. State verbs describe the state or condition of a single argument for instance the elephant is dead and they associate with patient. In addition, it is also verb class belonging to states but ambient; it does not argument e.g. it is hot. Processes express a change of condition or state in its argument e.g. the elephant died. They co-occur with Patients. Actions describe something that verb argument does or performs e.g. Harriet sang. Hence, agent is associated with action verbs. Similarly, as in state verbs, there is also ambient action verb e.g. it is raining. Action-processes account for both actions and processes. They have two arguments, the performer of the action, Agent, and the thing undergoing the process, Patient, for example the tiger killed the elephant (Wagiman, 2008)
Second, verb classification on Reference and Role Grammar (RRG) by Van Valin and La Polla which modified verb class taxonomy by Dowty (1979) to capture the distinctions between these verb classes. Then, it was assumed in work in RRG by Van Valin & LaPolla (1997) namely: states, activities, achievements, accomplishments, active accomplishment, causatives.  RRG is started with lexical representation for verbs and other predicating elements in which involve the lexical decomposition by Vendler (1957) called Aktionsart, and this decomposition is termed Logical Structures (LS) by Dowty (Van Vallin, 2002 in press). The verb classes with their decompositions are summarized in Table 2.5 below. 
Table 2.5 Lexical representations for Aktionsart
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Verb Class                                            Logical Structure
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State                                                       predicate´ (x) or (x, y)
Activity                                                  do´ (x, [predicate´ (x) or (x, y)])
Achievement                                          INGR predicate´ (x) or (x, y), or
INGR do´ (x, [predicate´ (x) or (x, y)])
Accomplishment                                    BECOME predicate´ (x) or (x, y), or
BECOME do´ (x, [predicate´ (x) or (x, y)])
Active Accomplishment                        do´ (x, [predicate1 ´ (x, (y))]) & BECOME predicate2 ´ (z, x) or (y)
Causative                                               a CAUSE b, where a, b are LSs of any type
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These LSs are starting point for the interpretation of the thematic relations in RRG.  Following Jackendoff (1967) as cited in Van Vallin (2002) that thematic relations are defined in terms of argument positions in the decomposed LS representations.          
                  Both approaches, either case grammar or RRG have a common characteristic that is they search for a subset of semantic component and semantic roles that is fitful to describe the thematic relations. The two approaches reveal some interesting parallels in concerning the decomposition analysis of verb meanings with regard to the sub classification of verbs into more or less equivalent types, thus states = states, activity = action, achievement = process, accomplishment = action-process.

2.5.2     Emotion 
Within the field of lexical semantics, verbs denoting emotion are usually called psychological (psych) verbs. Then, the class of such verbs denoting emotions like fear, anger, hate, love, etc. is commensurate with the class of psych-verbs. In a broader interpretation, the category of psych-verbs also includes sub-classes of perception verbs (hear, see, feel, etc.), cognitive verbs (think, believe, etc.), and also evaluation verbs (estimate, appreciate, etc.) (Klein and Kutscher, 2005: 2; Kitis, 2008: 149).
The nature of emotion and the meaning of emotion terms have been much discussed in anthropology and psychology, as well as in semantics. As cited in Goddard (1997: 70), within psychology, there are two main rivals approach to the emotion theory. They are cognitive approach (Averill 1980, Ortony et al. 1988) and social constructivism (cf. Harre Ed. 1986).
The cognitive approach views that emotions depend in large part on mental process for instance, when someone say proud, angry, there are kind of reaction that person is having to something they are thinking, or something they want or don’t want to happen, need to be described.  Being proud can be described as a reaction to thinking that is a good reason for person to think well.  Similarly, with feeling angry is a reaction of person to thinking that one else has been wronged.
Meanwhile, social constructions approach stress the cultural aspect of emotions, saying that social judgment, cultural values, and other cultural practices shape and create emotions. In Clifford Greertz (1975: 81; Goddard. 1997:70) emotions are cultural artifact embodying shared understanding of human nature and social interaction.
The meaning of emotion terms in semantics field has been discussed by Anna Wierzbicka from (1972) that has employed the concept of a prototypical cognitive scenario, taking her cue from Tolstoy’s practice of suggesting subtle emotions by means ingenious hypothetical scenarios (Goddard, 2002: 24). Further, Goddard states
wierzbicka’s insight was that emotion words of ordinary language work in a similar fashion, except that instead of linking feeling with illustrative situation they link with hypothetical cognitive scenarios, involving thoughts and wants (p.25).

In order to make clear this viewpoint, some example such as sadness is a bad feeling that linked to the thought ‘something bad happened’, joy is a good feeling linked with the thought ‘something very good is happening now’. From this explication, it doesn’t insist the every time one feels joy, one only necessarily thinks this particular thought. The scenario provides as a kind of reference situation by which the nature of the associated feeling can be identified.
2.5.2.1     Emotion Verb’s Argument
The thematic roles of psych-verbs are usually referred to as experiencer and stimulus, with one-place predicates allowing for an experiencer only (Klein and Kutscher, 2005: 2-1). Further, following Dowty (1991), an experiencer is a verbal argument whose corresponding participant in the situation named by the verb has a sensation, an emotion, apperception, a mental attitude or state with respect to this situation, while, a stimulus is the entity the experience. Stimulus can have different semantic function. In spite of the typical stimulus is an object with respect to which the experiencer feels something, a stimulus can also function purely as a trigger for a feeling with respect to something else. Pesetsky (1995) as cited by Klein and Kutscher (2005:16) make distinction between stimulus as causer and stimulus as target of emotions. According to Pesetsky, a stimulus is a causer that allows for a reading in which it only evokes an experience, while something else constitutes the target of emotion. This is clearly illustrated in the following examples:
(9) a. Bill was very angry at the article in the Times.
  b. The article in the Times angered/enraged Bill.

The word the article in (9a) is not a causer, but a target of emotion, while in (9b) it is a causer.
Broekhuis (2008:1-3) stated every psychological predicate has an obligatory argument that could be referred to as the experiencer.  It is an obligatory argument that experiences or is in the mental state denoted by the predicate. Furthermore, clauses containing a psychological predicate may take at least the five different kinds of arguments as such as experincer, target of emotion, subject matter of emotion, causer of emotion, and cause of emotion.
Target of emotion refers to the entity which implies a positive or negative evaluation of the entity, and the target is expressed by means of a prepositional phrase (PP)-complement.  Besides a target of emotion a psych-adjective can also have a subject matter of emotion, which is also expressed by means of a PP-complement. Although the target and the subject matter of emotion are sometimes difficult to distinguish, the distinction is real since the two can be simultaneously expressed. Emotions cannot only target or be concerned with some entity, but they can also be triggered by something that refers to as the causer or cause of emotion. The notion of causer will be used when the argument is actively involved in triggering the emotion, whereas the notion of cause does not imply activity.


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