The Equivalence of Wage and Price Staggering in Monetary Business Cycle Models
Abstract
Chari, Kehoe, and McGratten's (1998) finding that a standard monetary business cycle model with staggered price setting is unable to generate sufficiently persistent real effects of monetary shocks has engendered a growing literature aimed at developing alternative mechanisms for producing greater persistence. The most popular approach at present in this literature appears to be one in which staggered wage contracts are used as either an alternative or a complement to a staggered price mechanism. This is informed by recent research by Andersen (1998) and Huang and Liu (1998) which finds that the staggered wage model, despite its superficial similarity to the staggered price setup, incorporates a very different microstructure that implies substantially more real persistence. This paper argues that these authors' findings rely heavily on the assumption that identical inputs are used by all firms, and demonstrates that, by assuming firm-specific factor inputs the staggered price model is as capable as the staggered wage model of generating persistent real responses to monetary shocks.
Board of Governors of the Federal Reserve System International Finance Discussion Papers Number 672 July 2000 THE EQUIVALENCE OF WAGE AND PRICE STAGGERING IN MONETARY BUSINESS CYCLE MODELS Rochelle M. Edge NOTE: International Finance Discussion Papers are preliminary materials circulated to stimulate discussion and critical comment. References in publications to International Finance Discussion Papers (other than an acknowledgment that the writer has had access to unpublished material) should be cleared with the author or authors. Recent IFDPs are available on the Web at www.bog.frb.fed.us.
THE EQUIVALENCE OF WAGE AND PRICE STAGGERING IN MONETARY BUSINESS CYCLE MODELS Rochelle M. Edge* Abstract: Chari, Kehoe, and McGratten’s (1998) finding that a standard monetary business cycle model with staggered price setting is unable to generate sufficiently persistent real effects of monetary shocks has engendered a growing literature aimed at developing alternative mechanisms for producing greater persistence. The most popular approach at present in this literature appears to be one in which staggered wage contracts are used as either an alternative or a complement to a staggered price mechanism. This is informed by recent research by Andersen (1998) and Huang and Liu (1998) which finds that the staggered wage model, despite its superficial similarity to the staggered price setup, incorporates a very different microstructure that implies substantially more real persistence. This paper argues that these authors’ findings rely heavily on the assumption that identical inputs are used by all firms, and demonstrates that, by assuming firm-specific factor inputs the staggered price model is as capable as the staggered wage model of generating persistent real responses to monetary shocks. Keywords: Taylor contracting, output persistence, sticky prices, sticky wages, firm-specific factor inputs. * Mailstop 23, Federal Reserve Board, Washington DC 20551, (202) 452 2339; FAX: (202) 736-5638; rochelle.m.edge@frb.gov. I thank Michael Woodford for his advice and helpful conversations as well as Ben Bernanke, Jonathan Parker, Jeremy Rudd, Robert Shimer, Chris Sims, and Peter Storgaard for comments on earlier drafts. All errors are my own. After completing a previous draft of this paper, I became aware of Ascari and Garcia’s independently written 1999 paper, which makes several similar points. The views in this paper are solely the responsibility of the author and should not be interpreted as reflecting the views of the Board of Governors of the Federal Reserve System or of any other person associated with the Federal Reserve System.
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Vlqfh krxvhkrogv uhfhlyh gl(cid:30)huhqw zdjhv dqg zrun gl(cid:30)huhqw krxuv ghshqglqj rq zkhwkhu k l (cid:19) l k l (cid:19) l wkh| duh phpehuv ri 3>(cid:129) ru (cid:129)>4 +hyhq wkrxjk zlwklq wkhlu vxelqwhuydo 3>(cid:129) ru (cid:129)>4 2 2 2 2 wkh| duh lghqwlfdo,/ wkhlu dffxpxodwhg zhdowk dqg frqvxpswlrq sur(cid:31)ohv duh olnho| wr gl(cid:30)hu1 Wr vlpsoli| wkh sureohp dqg doorz d vlqjoh frqvxpswlrq sur(cid:31)oh wr fkdudfwhul}h doo krxvh0 krogv/ L dvvxph wkdw dvvhw sruwirolrv fdq eh frqvwuxfwhg vr dv wr surylgh wkh krxvhkrog zlwk frpsohwh lqvxudqfh djdlqvw dq| lglrv|qfudwlf ulvn1 Frqvhtxhqwo|/ d krxvhkrog*v zhdowk lv U lqghshqghqw ri wkh shulrg lq zklfk lw vhwv lwv zdjh1 Vlqfh F @ (cid:129)F(cid:16)gl/ wklv dvvxpswlrq | f | doorzv wkh l vxshuvfulswv wr eh gursshg iurp htxdwlrq +;,1 Wklv dvvxpswlrq lv xvhg uhshdw0 hgo| wkurxjkrxw wkh sdshu lq vlwxdwlrqv zkhuh gl(cid:30)huhqw krxvhkrogv uhfhlyh gl(cid:30)huhqw oderu lqfrphv1 415 Orj0olqhdul}lqj dqg Vroylqj wkh Prgho Dv lv vwdqgdug/ d vroxwlrq lv rewdlqhg e| orj0olqhdul}lqj wkh ehkdylrudo htxdwlrqv durxqg d vwhdg|0vwdwh htxloleulxp17 Wkh lpsruwdqw orj0olqhdul}hg htxdwlrqv duh wkrvh iru wkh krxvh0 krogv*oderuvxsso|ghflvlrq/wkhhyroxwlrqriwkhlq dwlrqudwh/dqgwkhhyroxwlrqriqrplqdo rxwsxw18 Xvlqj wkh vxevwlwxwlrqv doorzhg e| htxdwlrqv +5, dqg +8,/ wkhvh IRFv ehfrph= (cid:21) (cid:22) 4 (cid:15) (cid:15) zeh @(cid:16) \e . H \e . H (cid:8)e | 4.(cid:15) | 4.(cid:15) | |n(cid:129) 4.(cid:15) | |n(cid:129) (cid:8)e @$eh .$eh > dqg | | |3(cid:129) % @\e (cid:3)\e .(cid:8)e | | |3(cid:129) | Wkh sdudphwhu (cid:16)/ zklfk kdv wkh lqwhusuhwdwlrq ri wkh hodvwlflw| ri zdjhv zlwk uhvshfw wr rxwsxw/ lv htxdo wr 4 34 / zkhuh (cid:29) dqg (cid:29) duh wkh hodvwlflwlhv ri lqwhuwhpsrudo frqvxps0 (cid:5)(cid:5) SS (cid:129)nj4 SS (cid:5)(cid:5) wlrq dqg oderu vxevwlwx(cid:5)w(cid:5)lrq19 Ixuwkhu pdqlsxodwlrqv |lhog wkh iroorzlqj v|vwhp ri olqhdu gl(cid:30)huhqfh htxdwlrqv= 5 65 6 5 65 6 5 6 (cid:14)3(cid:129) 3 (cid:3)4 H \e (cid:3)(cid:14)n(cid:129) 3 3 \e 3 9 7 (cid:129)n 3 q 3 4 : 8 9 7 | \e |n(cid:129) : 8@ 9 7 (cid:3) (cid:129)n 4 q 4 (cid:3)4 : 8 9 7 \e | : 8. 9 7 4 : 8^% ‘= +43, | |3(cid:129) | 3 4 3 $eh 4 3 3 $eh 3 | |3(cid:129) (cid:13)(cid:8) (cid:13)(cid:18) (cid:13)(cid:28) q r 7Htxloleulxp lv dq doorfdwlrq t(cid:28) /(cid:127)w/M /t (cid:27)" dqg d vhtxhqfh ri sulfhv (cid:31) //h /- /(cid:127)j(cid:28) " wkdw vdwlvi| htxdwlrqv +4, wr +8, dqg +;, | wr (cid:27)w +<,/ | j | lyh |’ q f wkh vhtxhqfh ri prqhwdu| srol | f n | (cid:129) vk | rfn | v t0 | (cid:27)"|’ 1 f Wkh | |’f yduldeohv wkdw frqvwlwxwh wkh htxloleulxp kdyh ehhq gh(cid:31)qhg vr dv wr hqvxuh wkdw wkhlu vwhdg|0vwdwh ydoxhv uhpdlq frqvwdqw ryhu wlph1 8Lq zkdw iroorzv/ d fduhw ryhu d yduldeoh ghqrwhv lwv shufhqwdjh ghyldwlrq iurp lwv vwhdg|0vwdwh ydoxh1 9Kxdqj dqg Olx*v +4<<;, prgho lpsolhv 4 ’3(cid:129)/zkloh Dqghuvhq*v +4<<;, prgholpsolhv 4 ’f1 SS SS 8
DvEodqfkdugdqgNdkq+4<;3,kdyhvkrzq/ dxqltxhvwdwlrqdu|htxloleulxph{lvwvzkhq wkhqxpehurivwdeohhljhqydoxhvriwkhpdwul{D3(cid:129)Elvhtxdowrwkhqxpehurisuhghwhuplqhg yduldeohv lq wkh v|vwhp/ zklfk lq wklv fdvh lv wzr1 E| vroylqj wkh v|vwhp dqdo|wlfdoo|/ lw fdq eh vkrzq wkdw d xqltxh vwdwlrqdu| htxloleulxp zloo h{lvw iru sodxvleoh ydoxhv ri (cid:15) dqg (cid:16) +wkdw lv/ ydoxhv ri (cid:15) forvh wr 4 dqg ydoxhv ri (cid:16) juhdwhu wkdq }hur,1 Fkdul/ Nhkrh/ dqg PfJudwwhq +4<<;,/ dqg Kxdqj dqg Olx +4<<;,/ xvlqj wkh vlpsol(cid:31)fd0 wlrq wkdw (cid:15) @4/ vkrz wkdw \e hyroyhv dffruglqj wr= | \e @d\e .e% +44, | |3(cid:129) | zkhuh s 4(cid:3) (cid:16) d@ s 4. (cid:16) dqg e lv vrph srvlwlyh frh!flhqw1 Fohduo|/ iru (cid:16) ? 4/ 3 ? d ? 4 +wkdw lv/ zh revhuyh prqrwrqh0gdpshg uhvsrqvhv(cid:25)shuvlvwhqfh, dqg iru (cid:16) A 4>(cid:3)4 ? d ? 3 +wkdw lv/ zh revhuyh gdpshg rvfloodwlrqv(cid:25)qr shuvlvwhqfh,1 Lq wkh fdvh ri zdjh vwdjjhulqj/ zlwk (cid:30) A 4 dqg (cid:29) A 3/ (cid:16) zloo eh ohvv wkdw rqh zkhq (cid:29) idoov lq wkh lqwhuydo ^(cid:3)4>3‘/ zklfk lqfoxghv wkh (cid:5)(cid:5) SS ydoxhv iru (cid:29) dvvxphg e| Dqghuvhq +4<<;, dqg Kxdqj dqg Olx +4<<;,1 Wkxv/ dv fodlphg e| SS Dqghuvhq +4<<;, dqg Kxdqj dqg Olx +4<<;,/ zdjh vwdjjhulqj qhfhvvdulo| ohdgv wr shuvlvwhqw uhdo uhvsrqvhv wr prqhwdu| vkrfnv1 5 Sulfh Vwdjjhulqj lq d Vlpsoh Prqhwdu| Exvlqhvv F|foh Prgho L qrz frqvlghu d vlplodu prgho zlwk sulfh vwdjjhulqj1 Wkh remhfwlyh lv wr vkrz wkdw d vwdjjhuhg sulfh prqhwdu| exvlqhvv f|foh prgho zlwk krprjhqhrxv idfwru lqsxwv lv xqdeoh wr jhqhudwh shuvlvwhqw uhdo uhvsrqvhv wr qrplqdo vkrfnv zkhuhdv wkh vdph prgho zlwk (cid:31)up0 vshfl(cid:31)f idfwru lqsxwv lv fdsdeoh ri grlqj vr1 Wkh prgho suhvhqwhg lq wkh (cid:31)uvw wzr sduwv ri wklv vhfwlrq iroorzv forvho| wkh vlpsol(cid:31)hg vwdjjhuhg sulfh prqhwdu| exvlqhvv f|foh prgho ri Dqghuvhq +4<<;, dqg Kxdqj dqg Olx +4<<;,1 514 Wkh Prgho zlwk d Krprjhqhrxv Oderu Lqsxw Wkh vlpsol(cid:31)hg hfrqrp| lv fkdudfwhul}hg e| wkh iroorzlqj vhw ri djhqwv= d frqwlqxxp ri krxvhkrogv/ glvwulexwhg ryhu wkh xqlw lqwhuydo/ zkr frqvxph hdfk ri wkh gl(cid:30)huhqwldwhg rxw0 sxwv dqg dwrplvwlfdoo| vxsso| d krprjhqhrxv oderu lqsxw> d frqwlqxxp ri prqrsrolvwlfdoo| frpshwlwlyh (cid:31)upv/ dovr glvwulexwhg ryhu wkh xqlw lqwhuydo/ hdfk ri zklfk kluhv wkh krpr0 jhqhrxv oderu lqsxw wr surgxfh lwv ydulhw| ri wkh gl(cid:30)huhqwldwhg rxwsxw +phhwlqj ghpdqg dw vrph srvwhg sulfh,> dqg d prqhwdu| dxwkrulw| wkdw iroorzv d prqhwdu| srolf| uxoh wkdw 9
|lhogv dq hyroxwlrq htxdwlrq iru qrplqdo rxwsxw lq wkh irup ri htxdwlrq +4,1 Dv ehiruh/ pdunhw fohdulqj lv jlyhq e| htxdwlrq +5,1 51414 Wkh Krxvhkrogv* Sureohp Wkh krxvhkrogv* sureohp lv vlplodu wr ehiruh h{fhsw wkdw qrz krxvhkrogv frqvxph hdfk ri wkh hfrqrp|*v gl(cid:30)huhqwldwhg rxwsxwv1 Krxvhkrog l*v djjuhjdwh frqvxpswlrq/ F(cid:16)/ lv gh(cid:31)qhg | dv= # $ ] (cid:19) (cid:20) w (cid:129) w3(cid:129) w3(cid:129) F(cid:16) @ F(cid:16)c(cid:26) w gm +45, | | f zkhuhF(cid:16)c(cid:26) lvl*vfrqvxpswlrqri(cid:31)upm*vrxwsxwdqg(cid:21)lvwkhhodvwlflw|rivxevwlwxwlrqehwzhhq | hdfk ri wkh gl(cid:30)huhqwldwhg rxwsxwv1 Jlyhq wkh sulfhv vhw e| (cid:31)upv iru wkhlu gl(cid:30)huhqwldwhg rxwsxwv/ krxvhkrog l vroyhv wkh iroorzlqj h{shqglwxuh0plqlpl}dwlrq sureohp= # $ ] ] (cid:19) (cid:20) w (cid:129) (cid:129) w3(cid:129) w3(cid:129) plq s(cid:26)F(cid:16)c(cid:26)gm vxemhfw wr F(cid:16) (cid:23) F(cid:16)c(cid:26) w gm | | | | f f zkhuh s(cid:26) lv wkh sulfh ri (cid:31)up m*v rxwsxw dqg F(cid:16) vdwlv(cid:31)hv wkh Hxohu htxdwlrq jlyhq e| +;,1 | | Wkh h{shqglwxuh0plqlpl}dwlrq sureohp |lhogv krxvhkrog l*v ghpdqg iru wkh mwk jrrg= # $ s(cid:26) 3w F(cid:16)c(cid:26) @F(cid:16)(cid:4) | +46, | | S | zkhuh wkh sulfh lqgh{ iru djjuhjdwh frqvxpswlrq lv jlyhq e|= (cid:21)] (cid:19) (cid:20) (cid:22) (cid:129) S @ (cid:129) S(cid:26) (cid:129)3w gm (cid:129)3w = +47, | | f Dowkrxjk krxvhkrog l*v (cid:31)uvw0rughu frqglwlrq iru frqvxpswlrq lv wkh vdph dv ehiruh/ wkh (cid:31)uvw0rughufrqglwlrqirukrxuvvxssolhgfkdqjhvvlqfhzdjhvduhqrzixoo| h{leohdqgkrxvh0 krogv qr orqjhu kdyh pdunhw srzhu ryhu wkhlu oderu1 Vshfl(cid:31)fdoo|/ wkh (cid:31)uvw0rughu frqglwlrq iru krxuv vxssolhg ehfrphv= (cid:3) (cid:4) $(cid:16) Y(cid:30) K(cid:16) | @ (cid:3) |(cid:4)= +48, S X(cid:30) F(cid:16) | | (cid:29)q r (cid:30) " Vlqfh doo krxvhkrogv uhfhlyh wkh vdph uhdo zdjh/ F(cid:16)c(cid:26) (cid:129) >F(cid:16) >K(cid:16) zloo eh lghq0 |nr |nr |nr (cid:26)’f r’f wlfdo dfurvv krxvhkrogv1 Dv d uhvxow/ wkh krxvhkrogv* (cid:31)uvw0rughu frqglwlrqv +46,/ +;,/ dqg +48, fdq eh zulwwhq zlwkrxw wkh l vxshuvfulswv1 :
51415 Wkh Ilupv* Sureohp Wkh prqrsrolvwlfdoo| frpshwlwlyh (cid:31)up m dfwv dv d sulfh0wdnhu lq klulqj wkh krprjhqhrxv oderu lqsxw dqg surgxfhv lwv gl(cid:30)huhqwldwhg jrrg dffruglqj wr wkh surgxfwlrq ixqfwlrq \(cid:26) @K(cid:26) (cid:3)IF | | zkhuh IF/ zklfk uhsuhvhqwv wkh (cid:31){hg frvw idfhg e| wkh (cid:31)up/ lv vhw vr dv wr ohdyh wkh (cid:31)up zlwk qr prqrsro| uhqwv lq wkh orqj uxq1 Dv ehiruh/ wklv surgxfwlrq ixqfwlrq lpsolhv wkdw wkh pdujlqdo frvw idflqj wkh (cid:31)up lv htxdo wr wkh zdjh ri wkh krprjhqhrxv lqsxw +wkdw lv/ PF(cid:26) @$ ,1 | | Wzr0shulrg vwdjjhuhg sulfh vhwwlqj lv ghvfulehg lq wkh vdph zd| wkdw zdjh vwdjjhulqj k l zdv prghohg deryh> vshfl(cid:31)fdoo|/ (cid:31)upv lqgh{hg e| m 5 3>(cid:129) vhw qhz zdjhv lq shulrgv (cid:19) l 2 iw.5nj" / zkloh wkrvh lqgh{hg e| m 5 (cid:129)>4 vhw qhz zdjhv lq shulrgv iw.5n.4j" 1 &’f 2 k l &’f Wkxv/ wkh (cid:31)uvw0rughu frqglwlrq iru sulfhv iru (cid:31)up m zkhuh m 5 3>(cid:129) lv jlyhq e|= 2 5 (cid:19) (cid:20) (cid:19) (cid:20) 6 {h @ (cid:21) (cid:21) (cid:22) H 9 7 \ | PjF(cid:26) | . (cid:31) (cid:19) - |n | (cid:129) (cid:20) \ |n(cid:129) P (cid:19) jF(cid:26) |n (cid:20) (cid:129) (cid:31)| (cid:129) n(cid:129) 3w : 8> +49, | (cid:21)(cid:3)4 | 3w \ . (cid:129) \ (cid:129) | -| |n(cid:129) (cid:31)|n(cid:129) zkhuh {h ghqrwhv wkh udwlr ri sulfhv vhw wklv shulrg wr wkh djjuhjdwh sulfh ohyho dqg PjF(cid:26) | | ghqrwhv wkh uhdo pdujlqdo frvw ri surgxfwlrq iru (cid:31)up m lq shulrg w1 D qxpehu ri vlpsoh vxevwlwxwlrqv |lhogv wkh iroorzlqj h{suhvvlrq iru pdujlqdo frvw= (cid:19)U (cid:20) PjF(cid:26) @ $ | @ Y(cid:30)+K | , @ Y(cid:30) f (cid:129)K | (cid:26)gm @ 4 Y(cid:30) (cid:21)] (cid:129) (cid:19) \(cid:26) .IF (cid:20) gm (cid:22) | S X(cid:30)+F , X(cid:30)+F , X(cid:30)+\ , | | #| # | (cid:21) (cid:22) $| $f 4 4 {h 3w 4 @ Y(cid:30) \ +{h ,3w . |3(cid:129) .IF @ Y(cid:30)+\ .IF,= X(cid:30)+\ , 5 | | (cid:8) X(cid:30)+\ , | | | | Lw lv dssduhqw iurp wkh deryh htxdwlrq wkdw ehfdxvh doo (cid:31)upv xvh wkh vdph krprjhqhrxv oderu lqsxw/ wkh| doo idfh wkh vdph pdujlqdo frvw ri surgxfwlrq dqg zloo wkhuhiruh doo vhw wkh vdph qhz sulfh1 Dv d uhvxow/ wkh sulfh0vhwwlqj htxdwlrq +49, fdq eh zulwwhq zlwkrxw wkh m vxshuvfulswv1 Ilqdoo|/ vxevwlwxwlqj iru pdujlqdo frvw lq htxdwlrq +49, |lhogv= 5 (cid:19) (cid:20) (cid:19) (cid:20) 6 {h @ (cid:21) (cid:21) (cid:22) H 9 7 L(cid:30) t Et | |(cid:28) Y(cid:30)+\ | .IF,. (cid:31) (cid:19) - |n | (cid:129) (cid:20) L(cid:30) t Et |n |n (cid:129) (cid:19)(cid:129)(cid:28) Y(cid:30)+ (cid:20) \ |n(cid:129) .IF, (cid:31)| (cid:129) n(cid:129) 3w : 8= +4:, | (cid:21)(cid:3)4 | 3w \ . (cid:129) \ (cid:129) | -| |n(cid:129) (cid:31)|n(cid:129) ;
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(cid:21) (cid:22) 4 (cid:15) (cid:15) {eh @(cid:16) \e . H \e . H (cid:8)e | 4.(cid:15) | 4.(cid:15) | |n(cid:129) 4.(cid:15) | |n(cid:129) (cid:21) (cid:22) zkhuh (cid:16) htxdov 4 (cid:5)(cid:5) +w3 w (cid:129),34 SS 1 Wkh vwuxfwxuh ri wkh v|vwhp ri olqhdu gl(cid:30)huhqfh htxdwlrqv (cid:129)n4 Ew3(cid:129)(cid:28) (cid:5)(cid:5) lpsolhg e| idfwru0vshfl(cid:31)f oderu lqsxwv lv wkh vdph dv lq wkh fdvh ri d krprjhqhrxv oderu lqsxw vlqfh wkh wzr rwkhu htxdwlrqv lq wkh v|vwhp uhpdlq xqfkdqjhg1 Rqfh djdlq/ wkh rqo| gl(cid:30)huhqfh ehwzhhq wkh wzr v|vwhpv olhv zlwk wkh sdudphwhu (cid:16)1 Zlwk (cid:31)up0vshfl(cid:31)f oderu/ (cid:16) ?4/ dqg vr d prgho zlwk vwdjjhuhg sulfhv dqg (cid:31)up0vshfl(cid:31)f oderu lqsxwv qhfhvvdulo| |lhogv d prqrwrqh0gdpshg lpsxovh uhvsrqvh iru rxwsxw(cid:25)wkdw lv/ shuvlvwhqfh1 6 Glvfxvvlrq ri wkh Dqdo|wlfdo Uhvxowv Wkh dqdo|vlv ri wkh suhylrxv vhfwlrq (cid:31)qgv wkdw d vwdjjhuhg sulfh prqhwdu| exvlqhvv f|foh prgho zlwk (cid:31)up0vshfl(cid:31)f oderu lqsxwv fdq |lhog shuvlvwhqw uhdo h(cid:30)hfwv ri qrplqdo vkrfnv1 Wklv uhvxow ghprqvwudwhv wkh fodlp wkdw wkh frqfoxvlrqv ri Dqghuvhq +4<<;, dqg Kxdqj dqg Olx +4<<;, uho| juhdwo| rq wkhlu dvvxpswlrqv frqfhuqlqj idfwru pdunhwv1 Wr xqghuvwdqg zk| wkh vwdjjhuhg zdjh prgho dqg wkh vwdjjhuhg sulfh prgho zlwk (cid:31)up0 vshfl(cid:31)f oderu fdq surgxfh shuvlvwhqw uhdo uhvsrqvhv wr prqhwdu| srolf| zkloh wkh vwdjjhuhg sulfh prgho zlwk krprjhqhrxv oderu fdqqrw/ lw lv xvhixo wr h{dplqh wkh wkuhh prghov* zdjh0 dqg sulfh0vhwwlqj htxdwlrqv +htxdwlrqv +<,/ +4:,/ dqg +4;,,1 Lw lv dssduhqw iurp wkhvh htxdwlrqv wkdw wkh prghov wkdw |lhog shuvlvwhqw uhdo uhvsrqvhv wr qrplqdo vkrfnv lqyroyh vrph ihhgedfn h(cid:30)hfw wkdw dulvhv zkhq sulfhv ru zdjhv duh uhvhw1 Uhdo shuvlvwhqfh rewdlqv ehfdxvh wkhvh dgglwlrqdo h(cid:30)hfwv lqgxfh zdjh0 ru sulfh0vhwwhuv wr fkdqjh wkhlu sulfhv pruh prghvwo|/ wkxv doorzlqj d jlyhq qrplqdo vkrfn wr kdyh orqjhu0odvwlqj uhdo h(cid:30)hfwv1 Wr vhh h{dfwo| krz wkhvh h(cid:30)hfwv uhvxow lq vpdoohu sulfh fkdqjhv/ L wudfh wkurxjk wkh lpsdfw ri d rqh0wlph lqfuhdvh lq qrplqdo rxwsxw lq hdfk ri wkh prghov1 Lq wkh vwdjjhuhg zdjh prgho dq lqfuhdvh lq qrplqdo rxwsxw ohdgv wr dq lqfuhdvh lq uhdo rxwsxw/ zklfk lq wxuq lqfuhdvhv frqvxpswlrq dqg wkh dprxqw ri gl(cid:30)huhqwldwhg oderu lqsxw wkdw hdfk krxvhkrog vxssolhv1 Vlqfh wklv ohdgv wr d (cid:29) sursruwlrqdo ghfolqh lq wkh pdujlqdo SS xwlolw| ri frqvxpswlrq dqg d (cid:29) sursruwlrqdo lqfuhdvh lq wkh pdujlqdo glvxwlolw| ri zrunlqj/ (cid:5)(cid:5) rqh zrxog h{shfw d +(cid:29) (cid:3)(cid:29) , sursruwlrqdo xszdug dgmxvwphqw ri wkh krxvhkrog*v srvwhg (cid:5)(cid:5) SS zdjh zkhq lwv zdjh uhvhwwlqj rssruwxqlw| dulvhv1 Dq lqfuhdvh lq wkh zdjh zloo/ krzhyhu/ uhgxfh wkh ghpdqg iru wkh krxvhkrog*v gl(cid:30)huhqwldwhg oderu vhuylfhv e| d idfwru (cid:30)1 Wklv uhgxfhv wkh lqlwldo lqfuhdvh lq krxuv vxssolhg dqg glvxwlolw| ri oderu sursruwlrqdoo| e| (cid:29) / (cid:5)(cid:5) (cid:29) q r (cid:30) " (cid:31) / /l w (cid:129) /%h/- /(cid:127)j(cid:28) wkdw vdwlvi| htxdwlrqv +4, wr +8,/ +;,/ +46, wr +48,/ dqg +4;,/ jlyhq wkh vhtx |n hq (cid:129) fh r (cid:27) i w p (cid:16) r ’ q f hwd | u| | vkrfnv | t | 0 ’ (cid:27) f" 1 | |’f 44
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Zkdw lv lqwhuhvwlqj wr qrwh iurp wkh deryh glvfxvvlrq lv wkdw(cid:25)frqwudu| wr wkh fodlpv ri Dqghuvhq +4<<;, dqg Kxdqj dqg Olx +4<<;,(cid:25)lw lv qrw wkh dvvxpswlrq ri vwdjjhuhg sulfhv wkdw uhqghuv wkh prgho ri vhfwlrq 514 xqdeoh wr jhqhudwh d shuvlvwhqw uhdo uhvsrqvh wr d prqhwdu| vkrfn exw udwkhu wkh dvvxpswlrq ri krprjhqhrxv idfwru pdunhwv1 Dqrwkhu uhvxow wkdw frqwudglfwv wkh frqfoxvlrqv ri wkhvh dxwkruv lqyroyhv wkh vlplodulw| ri wkh frh!flhqw (cid:16) (cid:19) (cid:20) lq wkh vwdjjhuhg zdjh prgho/ zkhuh (cid:16) @ 4 34 / dqg lq wkh vwdjjhuhg sulfh prgho zlwk (cid:5)(cid:5) SS (cid:21) (cid:129)n(cid:22)w4 (cid:5)(cid:5) (cid:31)up0vshfl(cid:31)f lqsxwv/ zkhuh (cid:16) @ 4 (cid:5)(cid:5) +w3 w (cid:129),34 SS 1 Wkh rqo| gl(cid:30)huhqfh ehwzhhq wkh sdudphwhu (cid:129)n4 Ew3(cid:129)(cid:28) (cid:5)(cid:5) ydoxhv dulvhv qrw iurp dq| dv|pphwulhv ehwzhhq vwdjjhuhg zdjhv dqg vwdjjhuhg sulfhv exw udwkhu iurp wkh dvvxpswlrq wkdw lq wkh prgho zlwk vwdjjhuhg zdjhv krxvhkrogv hqmr| wkh uhqwv iurp wkhlu prqrsro| srzhu/ zkloh lq wkh prgho zlwk vwdjjhuhg sulfhv (cid:31)upv* uhqwv duh devruehg e| (cid:31){hg frvwv wkdw h{lvw lq wkh surgxfwlrq ri wkh lqwhuphgldwh jrrg1 Li wkhvh dv|pphwulhv zhuh holplqdwhg wkh sdudphwhu ydoxhv ri (cid:16) zrxog eh lghqwlfdo iru erwk vhwv ri prghov1 Wkh htxlydohqfh ri wkh prghov lq wklv uhjdug vwhpv iurp wkh idfw wkdw lq d yhu| vlpsol(cid:31)hg prgho zlwk rqo| rqh idfwru lqsxw dqg d olqhdu surgxfwlrq ixqfwlrq/ lw ehfrphv lppdwhuldo zkhwkhu lw lv jrrgv ru idfwruv wkdw duh ehlqj djjuhjdwhg/ dv zhoo dv zkhuh lq wkh surfhvv ri wudqviruplqj gl(cid:30)huhqwldwhg oderu lqwr djjuhjdwh frqvxpswlrq wkh prqrsrolvwlf frpshwlwlrq dulvhv145 7 Frqvhtxhqfhv ri dq Hqgrjhqrxv Fdslwdo Vwrfn 714 D Vwdjjhuhg Zdjh Prgho Wkh pruhghwdlohg yhuvlrq ri wkh vwdjjhuhg zdjhprgho prgl(cid:31)hv wkh vlpsoh prghori vhfwlrq 4 e| lqfrusrudwlqj fdslwdo dv d idfwru ri surgxfwlrq1 Wkh ixqfwlrqdo irupv wkdw L hpsor| forvho| iroorz wkrvh hpsor|hg e| Kxdqj dqg Olx +4<<;,1 Wkh qrplqdo vkrfn wr wkh hfrqrp|/ qrz d vkrfn wr wkh jurzwk udwh ri wkh qrplqdo prqh| vxsso|/ lv fkdudfwhul}hg e|= (cid:3) (cid:4) (cid:25) @ (cid:25) 4h{s^% ‘ +3 ?(cid:29)?4, +4<, | |3(cid:129) | zkloh wkh hfrqrp|*v pdunhw0fohdulqj frqglwlrq lv jlyhq e|= L .F @\ +53, | | | zkhuh L ghqrwhv lqyhvwphqw lq fdslwdo1 | Wkh (cid:31)up qrz xvhv fdslwdo dqg oderu lq surgxfwlrq1 Rxwsxw lv jlyhq e|= 45LqwkhfdvhridfrqfdyhsurgxfwlrqixqfwlrqDvfduldqgJdufld+4<<<,vkrzwkdwvwdjjhuhgsulfhvgholyhu d kljkhu ghjuhh ri shuvlvwhqfh wkdq vwdjjhuhg zdjhv1 46
\ @ #(cid:21)] (cid:129) (cid:19) K(cid:16) (cid:20) j3 j (cid:129) gl (cid:22) j3 j (cid:129) $ (cid:129)3k N k +54, | | | f zkhuh N lv wkh hfrqrp|*v fdslwdo vwrfn dqg (cid:14) lv wkh hodvwlflw| ri rxwsxw zlwk uhvshfw wr | fdslwdo1 Wkh(cid:31)up*v frvw0plqlpl}dwlrqsureohp|lhogv wkh iroorzlqj htxdwlrqv iru K(cid:16) dqg N = | | (cid:21) (cid:14) (cid:22) 3k # (cid:13)h $ 3k 3 /(cid:16) | 4 3j K(cid:16) @ \ | C(cid:27)| D +55, | 4(cid:3)(cid:14) | (cid:29)h (cid:13)h | | (cid:21) (cid:14) (cid:22) (cid:129)3k # (cid:13)h $ (cid:129)3k N @ \ | +56, | 4(cid:3)(cid:14) | h(cid:29) | zkhuh h(cid:29) lv wkh uhdo uhqwdo udwh rq wkh hfrqrp|*v fdslwdo vwrfn dqg (cid:13)h lv d uhdo zdjh lqgh{ | | jlyhq e|= 3 ] (cid:129) # $(cid:16) $ (cid:129)3j 4 (cid:129)3 (cid:129) j (cid:13)h @C | glD = +57, | S f | Shuihfw frpshwlwlrq lq wkh jrrgv pdunhw lpsolhv wkdw uhdo pdujlqdo frvw pxvw dozd|v htxdo rqh= # (cid:13)h $ (cid:129)3k (cid:21) h(cid:29) (cid:22) k PjF @ | | @4= +58, | 4(cid:3)(cid:14) (cid:14) Wkh suhihuhqfhv ri krxvhkrog l duh uhsuhvhqwhg e| wkh xwlolw| ixqfwlrq= ; 5 # # $ $ 6< X(cid:16) @H ?[" (cid:15)|7oq e (cid:19) F(cid:16) (cid:20) (cid:15) .+4(cid:3)e, P | (cid:16) (cid:15) (cid:15) (cid:129) .(cid:20)oq (cid:19) 4(cid:3)K(cid:16) (cid:20) 8 @ +59, f f= | S | > |’f | zkhuh e/ (cid:26) dqg (cid:20) duh sdudphwhuv1 Wkh krxvhkrog*v rz exgjhw frqvwudlqw lv= E(cid:16) .P(cid:16) (cid:23)U E(cid:16) .P(cid:16) .$(cid:16)K(cid:16) .(cid:29) N(cid:16).surilwv (cid:3)W(cid:16)(cid:3)S F(cid:16)= +5:, | | |3(cid:129) |3(cid:129) |3(cid:129) | | | | | | | | (cid:11) (cid:12) " Krxvhkrog l fkrrvhv F(cid:16)>P(cid:16)>N(cid:16)>$(cid:16) wr pd{lpl}h lwv xwlolw| vxemhfw wr lwv exgjhw frq0 | | | | |’f vwudlqw/wkhoderughpdqgixqfwlrqvshfl(cid:31)fwrlwvgl(cid:30)huhqwldwhgoderuvhuylfh+htxdwlrq+55,,/ dqg wkh hyroxwlrq ri lwv kroglqj ri wkh fdslwdo vwrfn= # $ L(cid:16) H N(cid:16) @+4(cid:3)(cid:17),N(cid:16).N(cid:16)M | > +5;, | |n(cid:129) | | N(cid:16) | (cid:19) (cid:20) zkhuh (cid:17) lv wkh udwh ri ghsuhfldwlrq rq fdslwdo dqg N(cid:16)M U | (cid:16) ghvfulehv wkh frvw ri fkdqjlqj | g(cid:16) wkh fdslwdo vwrfn1 Iroorzlqj Kd|dvkl +4<;5,/ wkh ixqfwlr|q M+=, lv dvvxphg wr kdyh wkh surshuwlhv M+(cid:17), @(cid:17)/ M(cid:30)+(cid:17), @4/ dqg M(cid:30)(cid:30)+(cid:17), (cid:23)31 47
Wkh krxvhkrog*v xwlolw|0pd{lpl}dwlrq sureohp |lhogv Hxohu dqg oderu vxsso| htxdwlrqv wkdw duh vlplodu wr htxdwlrqv +;, dqg +<,= 3 (cid:19) (cid:20)4 53 (cid:21) (cid:22)46 E C X (cid:28) (cid:30) F S | (cid:16)>(cid:127) (cid:27)| | (cid:16) F D@U | (cid:15)H | 9 9 7 E E C X (cid:28) (cid:30) F S | (cid:16) n(cid:129) >(cid:127) (cid:27)| | (cid:16) n n (cid:129) (cid:129) F F D : : 8 dqg +5<, | |n(cid:129) 5 6 (cid:19) (cid:20) (cid:21) (cid:30) (cid:22) 9 \ (cid:20) 4(cid:3)\ +$h ,3j 3(cid:129) : $h | @ (cid:30)(cid:3)4 H | 9 7 \ X(cid:30) (cid:19) F(cid:16)>(cid:127) | (cid:16) (cid:20) . | (cid:15)\ (cid:19) | (cid:129) | (cid:20) (cid:129)3j X(cid:30) (cid:21) F(cid:16) >(cid:127) | (cid:16) n(cid:129) (cid:22): 8 +63, | (cid:28) | (cid:27)| |n(cid:129) (cid:31)|n(cid:129) (cid:28) |n(cid:129) (cid:27)|n(cid:129) 5 (cid:19) (cid:20) 3j (cid:21) (cid:19) h (cid:20) 3j (cid:22) 3(cid:129) 6 . (cid:21) (cid:30) (cid:22) H 9 9 9 (cid:15) (cid:19) \ |n(cid:129) (cid:31) (cid:20) | (cid:129) n(cid:129) (cid:20) (cid:19) 4(cid:3)\ (cid:20) |n(cid:129) (cid:31) / |n | (cid:129)(cid:21) (cid:22) : : : (cid:30)(cid:3)4 |7 \ X(cid:30) F(cid:16)>(cid:127) | (cid:16) .(cid:15)\ (cid:129) (cid:129)3j X(cid:30) F(cid:16) >(cid:127) | (cid:16) n(cid:129) 8 | (cid:28) | (cid:27)| |n(cid:129) (cid:31)|n(cid:129) (cid:28) |n(cid:129) (cid:27)|n(cid:129) zkhuh= # $ (cid:21) (cid:22) (cid:3) (cid:4) P(cid:16) 4 e F(cid:16) (cid:15) X (cid:28) (cid:30) F | (cid:16)> S | | @ F | (cid:16) e (cid:3) F(cid:16) (cid:4) (cid:15) .+4(cid:3) | e, (cid:19) (cid:127) | (cid:16) (cid:20) (cid:15) > | (cid:27)| wrjhwkhu zlwk d prqh| ghpdqg ixqfwlrq= (cid:21)(cid:21) (cid:22)(cid:21) (cid:22)(cid:22) P(cid:16) e 4 3(cid:129) | @F(cid:16) 4(cid:3) (cid:129)3D +64, S | 4(cid:3)e U | | dqg d fdslwdo vxsso| ixqfwlrq= % ## $ $& U N(cid:16) H | M3(cid:129)(cid:30) |n(cid:129) (cid:3)+4(cid:3)(cid:17), +65, | (cid:8) N(cid:16) % |n(cid:129) ## | $ $ # $ ## $ $& N(cid:16) N(cid:16) N(cid:16) @ H h(cid:29) (cid:3)M3(cid:129) |n2 (cid:3)+4(cid:3)(cid:17), . |n2 M3(cid:129)(cid:30) |n2 (cid:3)+4(cid:3)(cid:17), = | |n(cid:129) N(cid:16) N(cid:16) N(cid:16) |n(cid:129) |n(cid:129) |n(cid:129) Wkh (cid:31)uvw0rughu frqglwlrqv duh orj0olqhdul}hg dqg fdoleudwhg zlwk wkh vdph sdudphwhu ydoxhv xvhg e| Kxdqj dqg Olx +4<<;,> ghwdlov ri wkhvh vwhsv duh jlyhq lq wkh dsshqgl{1 Iljxuh 4 glvsod|v wkh uhvsrqvh ri uhdo rxwsxw wr d prqhwdu| vkrfn lpsolhg e| wklv prgho iru wkh ydulrxv ydoxhv ri (cid:30) xvhg e| Kxdqj dqg Olx +4<<;,146 Dv zrxog eh h{shfwhg/ wkh uhvxowv(cid:25)zklfk vkrz d shuvlvwhqw uhvsrqvh ri uhdo rxwsxw(cid:25)duh vlplodu wr wkrvh ri Kxdqj dqg Olx +4<<;,1 Wkh ghjuhh ri shuvlvwhqfh lqfuhdvhv zlwk (cid:30)/ vlqfh kljkhu vxevwlwxwdelolw| ehwzhhq oderu lqsxwv uhgxfhv wkh dgmxvwphqw wkdw krxvhkrogv pdnh wr qrplqdo zdjhv1 46Vlqfh L dp pruh lqwhuhvwhg lq h{dplqlqj dqg frpsdulqj wkh shuvlvwhqfh/ udwkhu wkdq wkh devroxwh pdj0 qlwxgh/ ri wkh uhvsrqvhv/ L uhvfdoh wkh uhvsrqvh ri rxwsxw vr wkdw lw htxdov rqh lq wkh lqlwldo shulrg1 Wklv doorzv ph wr ghwhuplqh txlfno| zkdw iudfwlrq ri wkh lqlwldovkrfn shuvlvwv lq dq| jlyhq shulrg1 48
715 D Vwdjjhuhg Sulfh Prgho Wkh pruh ghwdlohg yduldqw ri wkh vwdjjhuhg sulfh prqhwdu| exvlqhvv f|foh prgho zlwk (cid:31)up0 vshfl(cid:31)fidfwrulqsxwveurdgo|fruuhvsrqgvwrwkhprghosuhvhqwhglqvhfwlrqv516dqg517/exw zlwk fdslwdo lqwurgxfhg1 Wkh prqh| jurzwk surfhvv dqg pdunhw0fohdulqj frqglwlrq duh vwloo jlyhq e| htxdwlrqv +4<, dqg +53,/ zkloh wkh xwlolw| ixqfwlrq lv jlyhq e| htxdwlrq +59, +exw zlwkF(cid:16) qrzgh(cid:31)qhge|htxdwlrq+45,,1 Zlwkerwkidfwrulqsxwvqrz(cid:31)up0vshfl(cid:31)f/krxvhkrog | l*v exgjhw frqvwudlqw fkdqjhv vr wkdwwkh fdslwdouhqwdo udwh lv lqgh{hg e|krxvhkrog +wkdw lv (cid:29)(cid:16), lq wkh vdph pdqqhu wkdw wkh zdjh udwh +$(cid:16), lv lqgh{hg1 Krxvhkrogv* Hxohu htxdwlrq dqg | | prqh| ghpdqg htxdwlrq duh vwloo jlyhq e| +5<, dqg +64,/ zkloh wkh fdslwdo vxsso| htxdwlrq lv prgl(cid:31)hg wr fdswxuh wkh (cid:31)up0vshfl(cid:31)f qdwxuh ri fdslwdo +wkdw lv/ wkh uhqwdo udwh lq htxdwlrq +65, lv qrz lqgh{hg e| krxvhkrog,1 Vlqfh krxvhkrogv qr orqjhu kdyh pdunhw srzhu ryhu wkhlu oderu/ wkh (cid:31)uvw0rughu frqglwlrq iru krxuv vxssolhg ehfrphv= (cid:19) (cid:20) $(cid:26) Y(cid:30) K(cid:26) | @ (cid:19) | (cid:20)= +66, S | X(cid:30) F(cid:16)>(cid:127) | (cid:16) (cid:28) | (cid:27)| Ilup m qrz idfhv d surgxfwlrq ixqfwlrq zlwk erwk (cid:31)up0vshfl(cid:31)f fdslwdo dqg oderu lqsxwv= (cid:19) (cid:20) (cid:19) (cid:20) \(cid:26) @ K(cid:26) (cid:129)3k N(cid:26) k (cid:3)IF +67, | | | zklfk |lhogv wkh iroorzlqj (cid:31)up0vshfl(cid:31)f idfwru ghpdqg ixqfwlrq= (cid:21) (cid:14) (cid:22) 3k 3 /(cid:26) | 43k K(cid:26) @ \(cid:26)C(cid:27)| D dqg +68, | 4(cid:3)(cid:14) | (cid:29)h(cid:26) | (cid:21) (cid:14) (cid:22) (cid:129)3k 3 /(cid:26) | 4 (cid:129)3k N(cid:26) @ \(cid:26)C(cid:27)| D = +69, | 4(cid:3)(cid:14) | (cid:29)h(cid:26) | Ilup m*v sulfh0vhwwlqj sureohp lv lghqwlfdo wr wkdw ri vhfwlrq 5/ lpso|lqj d sulfh0vhwwlqj uxoh olnh htxdwlrq +49,1 Zlwk wzr (cid:31)up0vshfl(cid:31)f idfwruv ri surgxfwlrq/ (cid:31)up m*v pdujlqdo frvw ehfrphv= # $ $(cid:26) k PjF(cid:26) @+(cid:29)h ,(cid:129)3k | = +6:, | | S | Wkh (cid:31)uvw0rughu frqglwlrqv duh orj0olqhdul}hg dqg fdoleudwhg dv ehiruh +vhh wkh dsshqgl{,1 Iljxuh 5 glvsod|v wkh uhvsrqvh ri rxwsxw wr d prqhwdu| vkrfn lq wklv prgho1 Wr jlyh vrph lqglfdwlrq ri wkh lqfuhdvhg shuvlvwhqfh eurxjkw derxw e| wkh dvvxpswlrq ri (cid:31)up0vshfl(cid:31)f idfwru lqsxwv/ L dovr suhvhqw lq Iljxuh 5 wkh uhvsrqvhv ri uhdo rxwsxw iurp yhuvlrqv ri wklv prgho zlwk (cid:31)up0vshfl(cid:31)f oderu dqg krprjhqhrxv fdslwdo/ dqg zlwk erwk krprjhqhrxv oderu 49
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^47‘ Nrhqlj/ Hydq I1/ (cid:19)Djjuhjdwh Sulfh Dgmxvwphqw= Wkh Ilvkhuldq Dowhuqdwlyh/(cid:20) Plphr/ 4<<:1 ^48‘ Urwhpehuj/ Mxolr M1/ (cid:19)Sulfhv/ Rxwsxw/ dqg Krxuv= Dq Hpslulfdo Dqdo|vlv Edvhg rq d Vwlfn| Sulfh Prgho/(cid:20) Mrxuqdo ri Prqhwdu| Hfrqrplfv/ 4<<9/ 6:/ 83808661 ^49‘ Wd|oru/ Mrkq E1/ (cid:19)Djjuhjdwh G|qdplfv dqg Vwdjjhuhg Frqwudfwv/(cid:20) Mrxuqdo ri Srolwlfdo Hfrqrp|/ 4<;3/ ;;/ 40561 D Dsshqgl{ D14 Orj0olqhdul}lqj dqg Fdoleudwlqj wkh Pruh Ghwdlohg Vwdjjhuhg Zdjh Prgho Wkh (cid:31)up*v (cid:31)uvw0rughu frqglwlrqv/ htxdwlrqv +55, wr +58,/ orj0olqhdul}h wr= Ke(cid:16) @\e (cid:3)(cid:30)$eh .+(cid:30)(cid:3)(cid:14),(cid:13) eh .(cid:14)(cid:29)eh zkhuh l5ikrxvhkrogv zkr uhvhw zdjhv lq shulrg wj +6;, | | | | | Ke(cid:16) @\e .(cid:30)$eh .+(cid:30)(cid:3)(cid:14),(cid:13) eh .(cid:14)(cid:29)eh zkhuh l5@ ikrxvhkrogv zkr uhvhw zdjhv lq shulrg wj +6<, | | | | | Nf @\e .+4(cid:3)(cid:14),(cid:13) eh (cid:3)+4(cid:3)(cid:14),eh(cid:29) > +73, | | | | (cid:13) eh @$eh .$eh > dqg +74, | | |3(cid:129) +4(cid:3)(cid:14),(cid:13) eh .(cid:14)eh(cid:29) @3= +75, | | Wkh krxvhkrog*v (cid:31)uvw0rughu frqglwlrqv/48 htxdwlrqv +5<, wr +65,/ orj0olqhdul}h wr= f f (cid:29) Fe .(cid:29) Pi @Ue .(cid:29) H Fe .(cid:29) Pi (cid:3)(cid:8)e > +76, SS | S6 | | SS | |n(cid:129) S6 |n(cid:129) |n(cid:129) (cid:21) (cid:22)(cid:21)(cid:21) (cid:22) (cid:21) (cid:22) (cid:22) (cid:29) 4 (cid:15) $eh @ (cid:5)(cid:5) Ke . H Ke +77, | 4.(cid:30)(cid:29) 4.(cid:15) | 4.(cid:15) | |n(cid:129) (cid:21) (cid:5)(cid:5) (cid:22)(cid:21)(cid:21) (cid:22) (cid:21) (cid:22) (cid:22) (cid:29) 4 (cid:15) (cid:3) SS Fe . H Fe 4.(cid:30)(cid:29) 4.(cid:15) | 4.(cid:15) | |n(cid:129) (cid:21) (cid:5)(cid:5)(cid:22)(cid:21)(cid:21) (cid:22) (cid:21) (cid:22) (cid:22) (cid:21) (cid:22) . (cid:30)(cid:29) (cid:5)(cid:5) 4 (cid:13) eh . (cid:15) H(cid:13) eh . (cid:15) H(cid:8)e > 4.(cid:30)(cid:29) 4.(cid:15) | 4.(cid:15) |n(cid:129) 4.(cid:15) |n(cid:129) (cid:5)(cid:5) 48Lqzkdwiroorzv/dvxshuvfulswdvwhulvn+-,rqdyduldeohghqrwhvlwvohyholqwkhvwhdg|0vwdwhhtxloleulxp1 4<
(cid:21) (cid:22)(cid:21) (cid:22) f 4 4 Pi @Fe (cid:3) Ue > dqg +78, | | 4(cid:3)(cid:26) UW | (cid:29) (cid:30) (cid:29) (cid:30) 4 4 Ue (cid:3) (cid:8)e 4.(cid:17)(cid:15)(cid:3)(cid:15) | 4.(cid:17)(cid:15)(cid:3)(cid:15) |n(cid:129) M3(cid:129)(cid:30)(cid:30)+(cid:17), (cid:19) (cid:20) @ H (cid:29)eh . (cid:15)H Nf (cid:3)+4.(cid:15),Nf .Nf > +79, | |n(cid:129) 4.(cid:17)(cid:15)(cid:3)(cid:15) | |n2 |n(cid:129) | zkhuh KW (cid:29) @ > (cid:5)(cid:5) 4(cid:3)KW (cid:26) (cid:29) @ (cid:19) (cid:20)(cid:19) (cid:20) (cid:19) (cid:20) (cid:3)4> dqg SS D D K (cid:129)3K D3(cid:129) -W D3(cid:129) .4 (cid:129)3K K -W3(cid:129) (cid:26) (cid:29) @(cid:3)(cid:19) (cid:20)(cid:19) (cid:20) (cid:19) (cid:20) = S6 D D K (cid:129)3K D3(cid:129) -W D3(cid:129) .4 (cid:129)3K K -W3(cid:129) Wkhpdunhw0fohdulqjfrqglwlrqwrjhwkhuzlwkwkhfdslwdovwrfnhyroxwlrqhtxdwlrq+htxdwlrqv +53, dqg +5;,, lpsolhv= (cid:21)(cid:21) (cid:22) (cid:21) (cid:22) (cid:22) 4 4(cid:3)(cid:17) \e @fFe .+4(cid:3)f, H Nf (cid:3) Nf +7:, | | (cid:17) | |n(cid:129) (cid:17) | zkhuh f +zklfk htxdov 4(cid:3) Bk, ghqrwhv frqvxpswlrq*v vkduh ri rxwsxw lq wkh vwhdg| vwdwh1 4 Wkh hyroxwlrq ri prqh| jurzwk lv jlyhq e|= (cid:25)e @(cid:29)(cid:25)e .% = +7;, | |3(cid:129) | L xvh wkh sdudphwhu ydoxhv ri Kxdqj dqg Olx +4<<;, wr fdoleudwh wkh prgho> wkhvh ydoxhv duh vxppdul}hg lq wkh wdeoh ehorz1 Wkh dvvxphg ohqjwk ri d (cid:19)shulrg(cid:20) lv vl{ prqwkv1 Wdeoh 4 0 Fdoleudwhg Sdudphwhu Ydoxhv Sdudphwhu= (cid:14) (cid:17) (cid:15) e (cid:26) (cid:29) M3(cid:129)(cid:30)(cid:30)+(cid:17), KW (cid:8)W Ydoxh= 3=66 3=373; 3=<:< 3=<; (cid:3)4=89 3=:8 6=4:5 3=66 4 Kxdqj dqg Olx*v +4<<;, dvvxphg ydoxhv iru (cid:14)/ (cid:17)/ dqg (cid:15) duh vwdqgdug1 Ydoxhv iru e dqg (cid:26) zhuh rewdlqhg e| (cid:31)wwlqj d uhjuhvvlrq iru prqh| ghpdqg +htxdwlrq +64,,/ zkloh (cid:29) zdv wdnhq iurp d uhjuhvvlrq prgho ri wkh prqh| jurzwk surfhvv +htxdwlrq +4<,,1 Kxdqj dqg Olx +4<<;, fkrvh M3(cid:129)(cid:30)(cid:30)+(cid:17), wr pdwfk wkh revhuyhg yrodwlolw| ri lqyhvwphqw uhodwlyh wr rxwsxw1 53
KW uh hfwv wkh dvvxpswlrq wkdw djhqwv doorfdwh rqh0wklug ri wkhlu wlph wr pdunhw dfwlylwlhv zkloh (cid:8)W lv vhw htxdo wr xqlw| lq rughu wr vlpsoli| wkh sureohp1 Dv (cid:15) @ (cid:31)W/ (cid:8)W @4 lpsolhv -W wkdw UW @ (cid:129)1 Kxdqj dqg Olx +4<<;, flwh d qxpehu ri vwxglhv hvwlpdwlqj wkh pdunxs rq q zdjhv dqg khqfh wkh sdudphwhu (cid:30)149 Wkhvh vwxglhv (cid:31)qg d udqjh ri ydoxhv iru (cid:30)/ vr Kxdqj dqg Olx h{shulphqw zlwk irxu ydoxhv ri (cid:30) +5/ 8/ 43> dqg 53,1 D15 Orj0olqhdul}lqj dqg Fdoleudwlqj wkh Pruh Ghwdlohg Vwdjjhuhg Sulfh Prgho Wkh (cid:31)up*v (cid:31)uvw0rughu frqglwlrqv/ htxdwlrqv +68, wr +6:, dqg +49,/ orj0olqhdul}h wr= (cid:21) (cid:22) g (cid:21)(cid:3)4 $& Ke& @ \e (cid:3)+(cid:21)(cid:3)4,{eh (cid:3)(cid:14) | .(cid:14)eh(cid:29)&zkhuh n 5i(cid:31)upv zkr uhvhw sulfhv lq shulrg wj> | (cid:21) | | S | | +7<, (cid:21) (cid:22) f (cid:21)(cid:3)4 $, Ke, @ \e .+(cid:21)(cid:3)4,{eh (cid:3)(cid:14) | .(cid:14)eh(cid:29),zkhuh o 5@ i(cid:31)upv zkr uhvhw sulfhv lq shulrg wj> | (cid:21) | | S | | +83, (cid:21) (cid:22) g (cid:21)(cid:3)4 $& Nf& @ \e (cid:3)+(cid:21)(cid:3)4,{eh .+4(cid:3)(cid:14), | (cid:3)+4(cid:3)(cid:14),(cid:29)eh &> +84, | (cid:21) | | S | | (cid:21) (cid:22) f (cid:21)(cid:3)4 $, Nf, @ \e .+(cid:21)(cid:3)4,{eh .+4(cid:3)(cid:14), | (cid:3)+4(cid:3)(cid:14),eh(cid:29),> +85, | (cid:21) | | S | | g P g jF & @+4(cid:3)(cid:14), $& | .(cid:14)(cid:29)eh &> +86, | S | | f P g jF , @+4(cid:3)(cid:14), $, | .(cid:14)eh(cid:29),> dqg +87, | S | | (cid:21) (cid:22) (cid:21) (cid:22) (cid:21) (cid:22) {eh @ 4 P g jF & . (cid:15) H P g jF , . (cid:15) H (cid:8)e > +88, | 4.(cid:15) | 4.(cid:15) | |n(cid:129) 4.(cid:15) | |n(cid:129) zkloh wkh orj0olqhdul}hg htxdwlrq iru wkh hyroxwlrq ri sulfhv lv lghqwlfdo wr wkdw ri vhfwlrq 5/ wkdw lv= 49Nrhqlj +4<<:, hvwlpdwhv d ydoxh ri j ’ 2f edvhg rq wkh dyhudjh pdunxs ri xqlrq zrunhuv* zdjhv ryhu qrq0xqlrq zrunhuv* zdjhv lq wkh XV gxulqj wkh shulrg 4<83 wr 4<;31 Nlp +4<<;,/ zkr xvhv d pd{lpxp0 olnholkrrgphwkrgrihvwlpdwlrq/(cid:31)qgvdydoxhrij’(cid:129)21 Ndw}dqgPxusk|+4<<5,/zkrxvhpruhdjjuhjdwhg gdwd/ (cid:31)qg hyhq orzhu hvwlpdwhv ri j1 54
(cid:8)e @{eh .{eh = +89, | | |3(cid:129) Wkhkrxvhkrog*vorj0olqhdul}hgHxohuhtxdwlrqdqgprqh|ghpdqghtxdwlrqlqwkhvwlfn|0 sulfh prgho duh jlyhq e| htxdwlrqv +76, dqg +78,/ zkloh wkh orj0olqhdul}hg fdslwdo vxsso| htxdwlrq lv vlplodu wr htxdwlrq +79,/ exw zlwk fdslwdo dqg lwv uhqwdo udwh lqgh{hg e| krxvh0 krog1 Ilqdoo|/ htxdwlrq +66, orj0olqhdul}hv wr= f $(cid:16) | @(cid:29) Ke(cid:16) (cid:3)(cid:29) Fe (cid:3)(cid:29) Pf S (cid:5)(cid:5) | SS | S6 | | zklohwkhpdunhw0fohdulqjfrqglwlrqdqghyroxwlrqriprqh|jurzwkduhlghqwlfdowrhtxdwlrqv +7:, dqg +7;,1 Wkh rqo| qhz sdudphwhu lq wklv prgho lv (cid:21)/ zklfk lv lq prvw fdvhv vhw htxdo wr 43 +wklv |lhogv d ydoxh ri 44 shufhqw iru (cid:31)upv* pdunxs ryhu pdujlqdo frvw1 55
Figure 3.1 - Impulse Responses of Output in the Staggered Wage Model 1 Sigma=20 Sigma=10 Sigma=5 0.8 Sigma=2 0.6 0.4 0.2 0 0 0.5 1 1.5 2 2.5 Years After the Shock Figure 3.2 - Impulse Responses of Output in the Staggered Price Model for Theta = 10 1 Firm-specific Labor and Capital 0.8 Firm-specific Labor, Homogeneous Capital Homogeneous Labor and Capital 0.6 0.4 0.2 0 -0.2 -0.4 0 0.5 1 1.5 2 2.5 Years After the Shock 23
Figure 3.3 - Impulse Responses of Output in the Staggered Wage and Staggered Price Models for Various Values of s and q Panel (a): s = q = 2 Panel (b): s = q = 5 1 1 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0 -0.2 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 Years After the Shock Years After the Shock Panel (c): s = q = 10 Panel (d): s = q = 20 1 1 Staggered-Prices 0.8 0.8 Staggered-Wages 0.6 0.6 0.4 0.4 0.2 0.2 0 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 Years After the Shock Years After the Shock Figure 3.4 - Impulse Responses of the Real Wage in the Staggered Wage and Staggered Price Models for Various Values of s and q Panel (a): s = q = 2 Panel (b): s = q = 5 0.8 1 0.6 0.8 0.4 0.6 0.2 0.4 0 0.2 -0.2 0 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 Years After the Shock Years After the Shock Panel (c): s = q = 10 Panel (d): s = q = 20 1.2 1.2 Staggered-Prices 1 1 Staggered-Wages 0.8 0.8 0.6 0.6 0.4 0.4 0.2 0.2 0 0 -0.2 -0.2 0 0.5 1 1.5 2 2.5 0 0.5 1 1.5 2 2.5 Years After the Shock Years After the Shock 24
Cite this document
Rochelle Edge (2000). The Equivalence of Wage and Price Staggering in Monetary Business Cycle Models (IFDP 2000-672). Board of Governors of the Federal Reserve System, International Finance Discussion Papers. https://whenthefedspeaks.com/doc/ifdp_2000-672
@techreport{wtfs_ifdp_2000_672,
author = {Rochelle Edge},
title = {The Equivalence of Wage and Price Staggering in Monetary Business Cycle Models},
type = {International Finance Discussion Papers},
number = {2000-672},
institution = {Board of Governors of the Federal Reserve System},
year = {2000},
url = {https://whenthefedspeaks.com/doc/ifdp_2000-672},
abstract = {Chari, Kehoe, and McGratten's (1998) finding that a standard monetary business cycle model with staggered price setting is unable to generate sufficiently persistent real effects of monetary shocks has engendered a growing literature aimed at developing alternative mechanisms for producing greater persistence. The most popular approach at present in this literature appears to be one in which staggered wage contracts are used as either an alternative or a complement to a staggered price mechanism. This is informed by recent research by Andersen (1998) and Huang and Liu (1998) which finds that the staggered wage model, despite its superficial similarity to the staggered price setup, incorporates a very different microstructure that implies substantially more real persistence. This paper argues that these authors' findings rely heavily on the assumption that identical inputs are used by all firms, and demonstrates that, by assuming firm-specific factor inputs the staggered price model is as capable as the staggered wage model of generating persistent real responses to monetary shocks.},
}