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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:3 |! C; L6 O4 B9 ^; ]: |
to do-business
6 w* b6 ?3 N/ ^: m  R1 t% _# t rt random 360( y% |: _: m9 F( S
fd 1
6 P, @/ S2 g2 K, q" i ifelse(other turtles-here != nobody)[4 L! |4 m7 D' }( {$ U
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.
* O* \8 a# B1 b; h8 A  A8 t# t   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 j8 E& U+ L' Q7 W, `* f+ x7 n& N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* G! @" N8 b. j2 \
   set [trade-record-one-len] of self length [trade-record-one] of self8 L# ~) j1 G& x" a& \
   set trade-record-current( list (timer) (random money-upper-limit))
& e* N- i( P. Z# _, ^& R
* ?7 x* ]) D) x' Q# a问题的提示如下:
' X/ O/ l: c1 V  s4 F- L. R% Y8 f3 G* A+ Z0 M# r
error while turtle 50 running OF in procedure DO-BUSINESS
, n3 D+ Y/ R6 n& V; U* j  called by procedure GO
/ J. D% I2 Z- Z. mOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 h+ u( ^* L6 c7 m6 y  k) z
(halted running of go)) ~; D. N0 i% `# |3 ~9 ^

: Q/ q8 F1 ]) R这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
* s& {5 P# y3 ~# m4 j8 a% r/ K另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
: |+ f3 \. H3 ?globals[" \9 {( U1 q& p3 b& }/ s
xmax
: D6 U: K3 X+ S1 vymax
% ?5 g8 o: \& Q- Zglobal-reputation-list
) D5 T5 ^" A) f, a9 `1 B: a1 p
4 f, d: }! h! P; V( };;
每一个turtle的全局声誉都存在此LIST
8 w! B  r( B* C3 @2 `credibility-list: h+ \0 n) L: h
;;
每一个turtle的评价可信度. u& g" s  {  M0 c
honest-service
7 i# ^+ }& _1 F0 Z0 _unhonest-service( L( I6 c, M( p9 v
oscillation9 a! {7 T4 C9 b; T0 G' R
rand-dynamic1 v1 U. B. L) Y6 x
]
) z2 n- P6 I' S% r5 K4 \
' A4 s: d; H, S. oturtles-own[% y  M3 }6 s9 i% n+ n
trade-record-all+ H; a, t9 N8 S5 Q; `" s
;;a list of lists,
trade-record-one组成
9 }) M& H6 O1 u- R* \) A6 K5 B( ptrade-record-one1 p7 S7 h* ^  I4 J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录( n/ e, W9 A. X- T8 R* m+ e

8 G% y9 C% G5 W;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]5 D2 _2 w% ~1 p6 p9 g, A8 O; V
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
8 S  ]* ?& a, ocredibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
/ \2 W% T. r  b# w# b1 {3 Nneighbor-total4 z; K9 I+ E/ N8 D8 {7 l  A4 J  `
;;
记录该turtle的邻居节点的数目
6 ?# C* K) }( b! w! x1 I( ^. m5 p0 |8 xtrade-time- Z5 q  p" Y7 J8 K
;;
当前发生交易的turtle的交易时间# m5 }+ P/ [; [4 @
appraise-give9 j- ]9 A6 H' t, s
;;
当前发生交易时给出的评价5 Y) D3 i) a* Z; H1 M* F6 J
appraise-receive* `# {& b' A4 j5 D
;;
当前发生交易时收到的评价
) c% k2 B' M: L4 Q) ]appraise-time" M8 Y8 V- l; a5 A8 m, A
;;
当前发生交易时的评价时间( Y6 _( i; \* c# q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* t  V" @5 o* n, Z" h3 e* z
trade-times-total& R# t( j# M$ n$ Y7 \1 i- n6 w
;;
与当前turtle的交易总次数" g9 G  Q$ n. [' S% v
trade-money-total5 S* z0 C. D1 k! Q
;;
与当前turtle的交易总金额
0 w" M/ \+ B3 _) M+ Rlocal-reputation
6 W& x( ^. D6 K1 F0 x) _* p1 w) ~global-reputation% ^/ b0 p* R( ?1 D8 }% B
credibility
  I  ^. b% D  \# A7 E;;
评价可信度,每次交易后都需要更新
$ x5 z; S9 ~9 Y  Q+ u. m9 Xcredibility-all
9 v" Y* r& Y! u1 q# i;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据: F! R# R. C5 l( ~/ Z" b! t

% |, M/ H8 D8 O- ~;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
( d$ t# \4 G% o6 K; |, j8 ?9 U( Tcredibility-one
0 y% v1 ^& O/ F- y/ |;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
) f( L7 l8 ^2 @$ X+ d% \global-proportion. P2 ]& a# v2 w& ?9 H7 X/ `
customer
( J: A' r3 M; t. n% r  ccustomer-no  v: z. q& o% ^/ {
trust-ok
4 h! _9 |( L4 d% t1 strade-record-one-len;;trade-record-one的长度
! X4 V- ~' {1 Z& Q]
. a; e! y/ ?) b7 u* \0 ~5 _
' F5 m% f% {  v) g* N% {2 Y5 Z3 v;;setup procedure
) i! H% R5 @% _9 a1 E, W, k; ^7 q" e. w7 u7 T7 j& ^
to setup# _+ `; k) t- |" ?, a

3 w+ S! q0 l0 a/ M7 u2 `ca
7 ]3 N' t& L# f3 y! y4 i, H

) w. }5 V" m/ d! ainitialize-settings

- l$ R& y8 o8 a6 B: W
$ {, Y( L. }+ k  ]4 A7 @crt people [setup-turtles]

0 M/ T/ o( j( B3 s9 ~
) e: x1 K7 L# o) Mreset-timer
! f$ B* o- g7 ?

, R5 n- i) G0 c) y8 cpoll-class

( |  r" D$ `0 D+ H
. O' _' z* m$ o* ~- s) a( \setup-plots

4 `- M+ M- u7 M. x
/ R, \  ?* D, ]' J" M" W1 o; @, Fdo-plots
- d0 u4 C) P/ ~
end. h/ P! q& ~( r# C- O4 x5 {+ O( `

; n& H5 d! d* S4 ]5 O1 W, m/ z3 uto initialize-settings
6 r2 N, v! Q/ F7 b) B
* v& _5 E" B9 R, h5 ?5 k5 t& cset global-reputation-list []
" X9 T1 d- d& x' H3 u/ z: V

3 R3 R; G. h, R$ gset credibility-list n-values people [0.5]
) b! H7 `/ \7 @) E4 B

' `) e6 c. {7 f( H8 R1 ~set honest-service 0
! A2 u2 O% I* i4 e* j

: m. w1 X7 t' a1 n% Q& Eset unhonest-service 0
+ M' y1 @* q6 L1 _
8 P$ f5 n% X# O2 y
set oscillation 0

" Q: A% }" p, C: s( f5 V
+ I6 h; K# A6 ^: [& zset rand-dynamic 0

+ s# _0 r: o4 m' `! I. tend
2 h  L4 Y4 y% o: o( S5 t4 q) J) D9 ]& i3 s
to setup-turtles 1 V' W7 R3 B) |! [$ z( {7 w3 r7 \
set shape "person"* l  C7 O2 ~) F; p3 {
setxy random-xcor random-ycor9 a4 C9 T0 x/ }" J( H
set trade-record-one []  ^8 B6 C& H  Z3 [0 s  v' J

! A3 K. k9 N" x% eset trade-record-all n-values people [(list (? + 1) 0 0)] 9 b& |. P+ X% p  `, G

) W$ O" ~! c, U" A, m; Rset trade-record-current []
# S  t9 S9 O* L0 v2 B5 }5 D" Hset credibility-receive []
/ \; w6 s# d) E& O: O5 Lset local-reputation 0.5* \3 }, N0 m. X3 R' r* x
set neighbor-total 0
% M8 v* j! {4 N+ B: r0 pset trade-times-total 03 c9 ]" L) v2 U+ Z8 f
set trade-money-total 0% N* x; ?5 H- @6 m
set customer nobody
! l2 Q9 G0 _! y! B5 G+ ^set credibility-all n-values people [creat-credibility], E* ~& J, z0 \% r( O. ?
set credibility n-values people [-1]
% k, c7 j6 k6 B' {5 U/ S4 iget-color2 H+ Q2 [: v" B. `: Z9 f) a; W
2 t1 z) @) j: T2 F# l: ]3 E
end, J8 d! L/ b3 j$ g, Z. L

7 H4 d7 [$ H* rto-report creat-credibility
8 L' ~9 O8 t" [  N8 V+ y' _report n-values people [0.5]
6 g8 A$ [! S! R- g6 O( g. ~end$ w% [  r  s$ }/ X# w
$ j1 D4 O+ y6 `% C% Q
to setup-plots' L4 [: J7 [& E- Q) k9 r
; N# z1 ?3 [6 _% v) e
set xmax 30
: O! v9 y0 g' p7 S: H

4 I- A: z0 l& h* U# W5 Cset ymax 1.0
/ B( h5 K1 }  i( h  _# \0 m) m

' A- k) `: |  `+ T3 C# a# B. Hclear-all-plots

) |# [& J; q' [: q& ]  t) S0 S. a4 [4 h7 o4 _
setup-plot1
. z0 R$ ~# D, }2 K/ I
# c1 e# H  A; |% F+ j
setup-plot2

0 E( n9 O5 A3 q+ w2 T
9 K8 l% T. _0 v# T& c2 bsetup-plot3
0 w& `6 u  o0 h2 H5 m
end
( `9 T1 [" [) i2 l2 G
+ M& m' \, w+ s+ _8 @( {& B( K;;run time procedures
7 D9 d. I% N9 |5 n
7 |$ T, E, J  v. X7 M4 J& p8 ?to go8 o/ U) V% j% {% ~0 t

2 Q6 N2 v9 T5 R7 f% Q- w, Cask turtles [do-business]

4 F$ {) `$ j1 g( G3 ^; o) pend, Q1 x: f! J" Q  Q4 u4 k
8 v& F" Z: P* N9 f1 Q, {* h9 P
to do-business 1 C5 n- [) u4 K/ M

) p) g' v  L, k# L- k4 _; Q/ j+ }% [" U0 z1 }* B* i. V
rt random 360

5 n9 O! B* m! I+ d: _2 v" b5 A* G. i4 ?: a
fd 1

* Q9 I0 \! I& G: f7 l8 c. O4 U; {3 k
ifelse(other turtles-here != nobody)[

& ~6 Z/ ]0 V. y9 C5 [; \, }) w' t1 g: F1 u' ^: P
set customer one-of other turtles-here

" g5 q& q4 O6 G& h9 ^6 p2 X. r  Y3 S# R$ V, r8 f1 N4 r( i
;; set [customer] of customer myself

  B7 b3 y! Y2 \" \2 Y: J/ I
. h; u& f. a/ y  V$ Zset [trade-record-one] of self item (([who] of customer) - 1)/ K  G  `% u7 ~- K: n: e5 R
[trade-record-all]of self
; d/ s, R% m  y9 S8 V# i;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) }* U3 l9 Y+ t- i
5 O+ D; }6 F' G+ m
set [trade-record-one] of customer item (([who] of self) - 1)
7 y* d" v" l$ E[trade-record-all]of customer
) @7 j" Q' h- F' S) S7 j
# ?0 I3 o% f) K' R, \
set [trade-record-one-len] of self length [trade-record-one] of self
6 T. b2 J0 l3 ^6 v+ n7 \: V2 R
9 q) w5 K9 b' x$ v5 I! R3 O" [6 z/ D
set trade-record-current( list (timer) (random money-upper-limit))
! R- L  X1 e2 Q; Z

# y7 N( N, }% E5 @/ i. N/ mask self [do-trust], D6 ?, {& [' Q2 [( `, d0 {
;;
先求ij的信任度
, A% I8 o% s& n  E3 h" O
; }9 ]$ h( i3 Y+ H# \" }3 ?if ([trust-ok] of self)0 ?$ _  k3 L* R6 E- r
;;
根据ij的信任度来决定是否与j进行交易[
0 a: a! R8 R4 [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself/ n# ]. ~, d; i1 j

6 i  E* l% \) d2 \, O" F[
- {6 d2 ]2 I& A- h4 Q

& g) b0 k, N8 [do-trade
  m! g3 \5 G( A3 t4 t
& e3 b& h! W" L
update-credibility-ijl

+ q. _# ~, D; \& f' Q4 p: q/ U% ~: k1 B
update-credibility-list
1 D+ V+ @7 `6 p. z$ D

& R7 b( j0 Y% I& o$ i$ C: E9 }8 t. g4 o7 J: Z" J1 F
update-global-reputation-list

' D# A% }) Q% \6 {! [& S) i" ~; x; r
poll-class

% j: @& f  u) p2 i4 H1 k! h
  P8 B4 e0 Z. j. [5 Fget-color
, D* `, R! L4 t; \% r: D/ M
4 J8 v# a3 V* x- B7 B7 z
]]4 j' {) \- G- ^

; c  E" S' J4 `;;
如果所得的信任度满足条件,则进行交易
% Z. n  V/ O0 C, C$ K1 n# G" x- G8 ?) ]$ B; N7 r/ P$ G
[

4 A& N( U8 e  W9 S7 N$ y1 _' z* L! b" m0 z2 @' w% _3 r
rt random 360

. ^- D& `7 `% R8 F6 ^
9 O% D' R$ a* h. i6 G" Ofd 1

7 f6 ^* d9 v, t" ^+ ?) K; X
" H) d5 |  H6 B]
% ?: O+ H" a2 J
  @6 C4 m1 }1 T7 T8 Z  r8 {/ z' d
end
7 n6 ]" Z9 w$ {. g3 d3 c5 n
% U; O6 l) j2 \. y6 L. F
to do-trust 4 R- K: z2 N* H0 H
set trust-ok False2 `; t: T1 S# F: i( a" D
- x8 l8 V6 c& v) a) x% J- u' Z9 F" J# T1 o
) M2 O7 n: q* T  G& y0 q# ^6 c
let max-trade-times 05 x0 ^* ?2 t% l4 L% f: `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" \( B" E$ ^5 N1 Llet max-trade-money 0
. q" ?5 S% k, B& ^, i7 gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 m+ Q6 H0 D% Z' @8 C% Vlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))! I; e" L/ Y% i$ E, o2 f
' c! }8 h4 X2 ~* _" U2 X) e( l
* t' C% J9 I" N- L1 {% r1 S+ g$ _
get-global-proportion
, R: D" f1 W, J7 e4 C' Vlet trust-value
( ~7 L0 d. C# Q3 clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

. l% ?/ k2 d: G7 p0 Nif(trust-value > trade-trust-value)( j, k) A& n1 ]" w: d( Q* c
[set trust-ok true]
8 A, G. U7 }6 \! |0 N. n, W0 c9 [! ~end& O+ C& a- ^( G2 R
2 W' m7 z) q/ C& b1 y' Q" ^8 `
to get-global-proportion
8 ]" C, G5 b  N) o5 `9 Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ Z/ }& J3 ~; ~! |( V2 N* Q[set global-proportion 0], O3 K6 z/ X5 D4 v& J; |9 {
[let i 0
' I" ], }/ W% ]3 Y) ]7 F1 Elet sum-money 0
( `6 ^* R) r: v+ A! rwhile[ i < people]( f" j5 Y+ y% l+ j# A. l; D
[  h& V! D! r; o- y% m! j% Q
if( length (item i
! G$ F( M! x) o& n[trade-record-all] of customer) > 3 )
, }( Q# t9 v' G. P0 K; d
[
4 c3 W) u2 C$ _set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 l) i4 s3 p  s3 B& R1 j4 i* f
]
7 C* H+ O- ~5 J# x]
: [3 ]( }7 Y( l4 u1 \. Ulet j 08 M" [" Y) Z2 Z& B8 D/ F5 ]4 E
let note 0$ t; }! A7 g/ l* \
while[ j < people]
* P5 Y; ?  Y1 I# g3 Y( ~* w[/ G5 B! K  F$ n  V& Q( r* |
if( length (item i+ \* ^" Z" x- K. f$ ~5 \
[trade-record-all] of customer) > 3 )
4 K" C0 T' t! J5 B" B
[4 n, j3 i; C5 S. Z* m& {
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. Q+ {, ?9 {" U/ x[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. q+ _( U- e' e. C: \1 C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ h2 }8 `# L8 K+ z* X! t( p3 E2 U
]
  t: P' D. H2 N$ U! Q]' D& l1 |9 z/ o' n
set global-proportion note
, |) f$ i& s: ^5 X]
# h7 Z" f2 t% T& mend
9 x+ k! x4 f) {3 l! m& f0 O# U
2 t7 e% o* T: M5 t; _to do-trade
$ P4 T0 b. u" n;;
这个过程实际上是给双方作出评价的过程
6 B& M1 [5 F3 s6 D0 F. H; qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价( W$ D0 Y2 x! d# m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: z" G9 r& B6 J2 U  Q5 Yset trade-record-current lput(timer) trade-record-current
% J. ]. L% \. h' U/ e;;
评价时间# o5 Q& z' A# o# _) U+ g9 W
ask myself [* \) p. z' f' E1 b# j
update-local-reputation, t& I* X7 u4 s% ?5 c" m
set trade-record-current lput([local-reputation] of myself) trade-record-current
  \+ m& E/ T2 z& k, S. Z' g' f]8 P% f8 h# r* o9 }( j, Y) a3 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 M: L& I" q. c# D0 X% G# N;;
将此次交易的记录加入到trade-record-one8 F' K8 m: Q; w7 H/ S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
- V% }3 J6 p" h; U7 Ilet note (item 2 trade-record-current )
4 ?( J" i; R$ w) Z/ Tset trade-record-current
9 _. ^  s6 }7 C+ J% G% z8 v(replace-item 2 trade-record-current (item 3 trade-record-current))
3 P# e2 m5 J1 M7 `6 Y# c
set trade-record-current
  D, q# u+ L6 M; E; s(replace-item 3 trade-record-current note)/ R# z4 \- D3 t
9 N2 t8 g! y) v+ d* n  |( K( }

3 ?7 t$ d; F9 t4 J5 z& ]* t; Jask customer [
6 E& ?8 |$ O5 n) h0 Wupdate-local-reputation
$ ~! O9 K9 j* l6 i% D6 T. L  b! t* Uset trade-record-current# L+ I3 X, f4 Y( V) }! \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( Y0 C% @& B9 G3 _
]
% O/ i) W, [: l/ o
' S. B# I$ z" P9 ?" ^! O
: Y9 ]6 h( f, S' m$ r9 ]
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 w0 M+ G7 B5 v) k! R
' H: V* O, C# r( s
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 @9 S6 O# @! M# ~6 R" };;
将此次交易的记录加入到customertrade-record-all$ `! e0 f/ V7 G( Z" m( u2 Q& G
end' T' l' q/ g% X3 g; r8 R$ `9 r
! x2 c6 A2 z4 O: o" ^2 [
to update-local-reputation2 }7 f/ N3 Q( n1 e
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 ?3 z) o# R  @$ c8 p0 e6 n7 Y# v2 ]% n- b
" k( n5 _) }7 H% ~0 S6 {& u
;;if [trade-record-one-len] of myself > 3

, y8 n/ P2 _; A' V# b. G7 r! b9 Zupdate-neighbor-total
# o( P+ C6 ^* @: N# P/ ~;;
更新邻居节点的数目,在此进行$ w. Y5 P3 K9 t8 M9 f4 K& h
let i 3( U% D+ Y; o2 g8 b$ I, M
let sum-time 0
  f& L# q6 Y; l! H+ h* bwhile[i < [trade-record-one-len] of myself]9 m  p8 W% v3 w9 }, s
[4 J3 a9 R9 l. d" |* w0 I' }
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 @0 i, }; u* }/ }
set i
  {# h4 s5 K& R9 r, X8 a( i + 1)

4 f, a# w8 [; z- i]  \+ G* d: M! e5 K$ _6 P3 g
let j 3
1 c  h2 f3 s! {5 l7 blet sum-money 0& g2 k9 Q, ?  O5 F4 u* M8 G$ `
while[j < [trade-record-one-len] of myself]% M6 g3 w6 G1 C
[) [7 M" G' w6 }4 F# F- B
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ V8 Z, R: ?! U. s! o& Y3 o, iset j* {+ [6 Y1 e) d% f0 ?  ?
( j + 1)
1 ^% c  G) }9 W
]
, h6 H5 E' C3 K+ V; P4 B3 E: a! k8 d* Ilet k 3% u% o8 H3 q8 Z1 j; Z
let power 0
* v( Q+ _: V" g# w/ Ilet local 0
) r% E# X% q8 ^while [k <[trade-record-one-len] of myself]$ Q! P+ s0 S: {
[
9 B8 ?5 {3 F% H+ ~7 ^, dset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) ; G4 H1 e/ E/ L+ d1 w1 E
set k (k + 1)0 X/ w5 Q9 G2 r
]$ D4 f, }1 p. Q0 l6 T8 E
set [local-reputation] of myself (local)
) @8 s7 p( n9 nend
* W8 @& {1 u& g0 o8 q& Z# ]) l5 W* Z  S
to update-neighbor-total
# T6 Y/ G6 T3 }# U' H2 R2 N; @* S. O% m0 I2 d( V1 I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 l5 q. Q. c% ?3 C2 f  ]6 A2 j5 W$ `7 k  i, i4 g  V$ r: _

* t' w* d3 R+ V) K) Dend7 }( n. `. [+ A- [) t( U% B
0 Y% N- z  W+ h# H. U5 R; M* d
to update-credibility-ijl
5 V  f# o" j0 @( P( X  {6 B( B9 ]5 D& x# k! r2 w
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
: a, c5 ~$ G$ _6 Q( f# F& M  |) `let l 0
1 q8 l9 l& X% Qwhile[ l < people ]2 W' t- W* t; E+ Y3 P
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
- q& `% o4 p; y2 f+ F* E- c[; s6 B/ D1 E2 D/ Z( [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% R' L$ l5 }0 m8 Iif (trade-record-one-j-l-len > 3)* b+ L1 J5 T" U' v7 g4 s+ `: F
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one. U5 Y  s$ d& [% T. S
let i 3
+ Y% D4 W6 D, U/ olet sum-time 0
3 h3 F5 ~* v8 s. y# xwhile[i < trade-record-one-len]& r9 ?  |4 x; W  R0 m" ~
[" z4 o2 n  v+ q3 t) Z! {
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ), v; _; K2 @% @7 x: a
set i
4 I" Z9 k# f2 g. e5 D6 ^( i + 1)

+ G9 x6 v+ |  c/ }]! y! [2 T0 F) N" o) Q
let credibility-i-j-l 0
0 d+ x' t% l2 e' U# {- I9 V- m;;i
评价(jjl的评价). y8 J6 W  {5 s2 q' O
let j 3
8 I+ B/ Z1 c; l9 _5 P9 J, Flet k 4  z7 [' s8 e0 k
while[j < trade-record-one-len]
- d" r* }- [* P: ?[/ B+ R' ~( ?; o# l  ~
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
9 P" [! P* p, q) J6 yset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)3 X6 I2 L" b% P# {6 `! r3 |
set j
# ~1 \8 h1 K" ^1 f  l! q# i  r( j + 1)

; V3 D; L0 H, z0 C- H$ W: h9 p$ w2 T]! @% w3 c8 Z1 V) h
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))$ ~8 P, z8 `1 Z$ Z% `' o
1 I) W: |2 d( t+ {/ w% a

6 r  G4 q8 ]8 m! alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% Z. @: j8 V" U2 |& `5 _;;
及时更新il的评价质量的评价% E6 A% h' A; H! R8 ]" B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- ^5 i. z7 y6 {+ u! n) F
set l (l + 1)* A+ l$ H' f+ n, m
]6 A& G. u6 ]# F5 A& i
end, r" z* ?; q# X) ^% L) H( c

0 V  q- c( e/ ]to update-credibility-list
4 S$ u( n7 P+ Plet i 0) \! b5 i/ Q4 p
while[i < people]
2 \& N/ @4 Q' m( d( n8 B[
8 [5 W7 F( x  i$ w$ blet j 0: E0 F  F& M  [# b8 n
let note 0
- j+ m9 [1 h4 Y+ }- ]/ ulet k 0% d% l& O# K2 D
;;
计作出过评价的邻居节点的数目: V: e) {* A, B9 B7 {1 m; x
while[j < people]
# |/ w( ^9 u! Z! V6 w. v[. m, y0 R6 Q( W$ N2 b8 C- M* r" o3 I
if (item j( [credibility] of turtle (i + 1)) != -1)
5 M; [( ]/ @1 [( h) K;;
判断是否给本turtle的评价质量做出过评价的节点% I; n: r0 n' `+ _  s- }" p; s& F
[set note (note + item j ([credibility]of turtle (i + 1)))
9 ?9 G& c& H* v; S  s2 F: u;;*(exp (-(people - 2)))/(people - 2))]

; w$ D1 q) z' V/ I% j' V- D4 N# |) {set k (k + 1). b$ d. x4 g: ~" I5 w( r5 J
]
% `* [' J, T' p5 cset j (j + 1)
" S& W. ^" H( Z8 }]
! ]; S) f, B8 jset note (note *(exp (- (1 / k)))/ k)( W- D( h( r+ s3 m
set credibility-list (replace-item i credibility-list note); S( G) \7 e8 V9 F0 G/ \' p' n  N1 R
set i (i + 1)4 j5 ~0 ]$ Y# c4 Q! k
]
" q6 e5 e! U" \9 wend5 Z/ G. J, K# B' v0 H* [1 x

% c& |/ a/ t$ n( l$ ~& ~; sto update-global-reputation-list
0 S$ F9 {& w! g, `# rlet j 0! f( [: j! ]  Y
while[j < people]
2 U, b+ t& u  g6 [; g5 Z6 g, g[
4 N: c& i0 n/ `0 M% Dlet new 0& m7 @: z; y* V& [: I
;;
暂存新的一个全局声誉
# t2 E0 H9 P/ |  ]" \) P! Hlet i 0
2 A- C" b/ g8 S4 ?% zlet sum-money 0
* f" H& t; w& {+ c) K/ blet credibility-money 04 [. G  e! f( c7 l; [2 I& V
while [i < people]
9 b0 w4 i5 ^7 Z; F. D[( E% I' {3 _9 d2 S0 s7 L4 P
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 o- x' W% M0 x+ r# w+ g9 n
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( c$ M9 {" a! z$ m! X
set i (i + 1)' C7 a8 q4 t, ^0 ~, l$ ^
]  m8 Q% e. K4 v
let k 00 F0 x) u7 q# t% C) {
let new1 04 u& d$ y# D8 G- J0 D1 x
while [k < people]2 d+ {+ d2 o+ z- {/ ?1 ?
[
/ ]* |( w, t' o" P- O* s3 Sset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)6 A! K3 t2 v; B/ g- M
set k (k + 1)
/ C9 w: P  \: U]
& C) }8 \+ p/ U" M! H0 sset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 B! H! R. j. L* M
set global-reputation-list (replace-item j global-reputation-list new)) n$ D% `' _/ a; u6 r8 |, I
set j (j + 1)
& [: Z! Y+ t  E4 q9 \' n+ M+ T]3 s) i0 `4 D/ j/ W
end
( }# s. V) s/ ?2 B1 Y% q1 X8 [- e: U' w* e* H
9 d2 G& b/ p' O/ K- V' S5 X

: c3 J  Y3 v- ]2 k3 p) v& Tto get-color
2 V8 h* ~; \1 v, `: G" d/ @0 g& M* x% b5 b) M+ c9 K/ G
set color blue
3 \' _9 [; Y# `9 n/ N- M
end
& S% H" g7 `3 A% m8 ~* l1 Q- A5 A" c0 U1 @( R3 G
to poll-class
4 a: A$ C/ F. s3 u6 @0 ]end# t5 O0 |* Z  e
. I) f% {5 e$ p
to setup-plot14 S  K5 `7 A0 T6 c% c6 X
& E, n' \! B. ^7 ^  v7 F3 b0 @4 E
set-current-plot "Trends-of-Local-reputation"

$ K: o) O; I$ \
5 B1 h: l$ R6 {) a* Nset-plot-x-range 0 xmax

6 W0 z! J5 x# S: S6 a* V* H# h" E1 L/ z7 U' A9 ^3 e0 K
set-plot-y-range 0.0 ymax
. k6 g: W; P# k" k0 n( b4 S7 l  K
end# l, ?3 Z8 M# v

7 L& x; W- }# R1 Sto setup-plot2
- Y4 `) o2 p+ ~$ |7 M+ J9 H0 X
# T' I# ?8 ^! }. b3 k0 }8 p: o) kset-current-plot "Trends-of-global-reputation"
7 d5 e* |7 Q9 U, t

$ b$ y& u8 c5 n. q( gset-plot-x-range 0 xmax

1 w+ _6 _" m$ L* U9 m
7 }5 A/ Q# w4 f1 H3 wset-plot-y-range 0.0 ymax
* ]' H5 N5 d% x
end
) m4 M6 ]; }: A9 s) v7 }  s
4 e% C( K4 e% Q% I3 \- s' Yto setup-plot3
% J5 Z2 M0 \1 c9 j% h9 H0 C8 x
& ?* I# a+ ~0 d  e9 Sset-current-plot "Trends-of-credibility"
9 D+ E+ m! g0 v& \

( a: I; d$ J# |, G2 P6 Cset-plot-x-range 0 xmax
" P# v* Z" F$ e: n. s
# z$ X' s5 e) s$ p8 {. w# i; ]% M
set-plot-y-range 0.0 ymax
9 z* n& r/ ]8 I* @: r; `( ^
end) c8 R0 {# t, |! E* ^

& \+ p, o- M3 b6 g3 xto do-plots- N: q. l$ q: A! G
set-current-plot "Trends-of-Local-reputation"& k! ]8 F/ @+ v* @. c' O3 ]( i5 n, h
set-current-plot-pen "Honest service": T  W, K8 l7 k. }6 M7 S, W  P1 x
end
5 b' ~% I% j( O  |5 @6 y+ E) P
5 n; P1 {& l" J( @& P# ^[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.. p8 B2 z% J$ K' O
8 [  m, X+ l0 ?" H) q
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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