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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:
  I9 Q& }9 f% gto do-business 9 d/ C4 G( y3 r# u: Y6 u$ K
rt random 360" W/ t( _& W! c. q' Y
fd 1
6 z+ m+ G, R7 f' u8 a ifelse(other turtles-here != nobody)[$ w2 F( Z7 Q# w9 D5 T+ |' C
   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.# j6 m: P8 _" J( G" Z  ?" X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    2 X  [/ ]0 |4 D8 C3 B4 V* b
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# V0 D9 V6 Y4 X
   set [trade-record-one-len] of self length [trade-record-one] of self* v2 i. I- d5 m9 |1 k
   set trade-record-current( list (timer) (random money-upper-limit))
* U$ O, U2 x) h  S- Q* H9 ?. v% z+ g$ S: l1 Y
问题的提示如下:' D- q. J8 \% d  H! I# h" }5 c; g

4 ^, d, t3 G$ L5 M& f4 ~error while turtle 50 running OF in procedure DO-BUSINESS9 ?& L$ E# {7 q7 F' B% O
  called by procedure GO
9 V: a6 i9 A' q* Y4 qOF expected input to be a turtle agentset or turtle but got NOBODY instead.
' A+ e; ^5 @. F$ s8 ^* j
(halted running of go)  k' r. N) W& F6 H

, N( {, m) e  K# R! X9 F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~~
1 y6 t4 e( e' O. b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- s9 V3 V5 S. f
globals[- \2 v9 T8 @/ t$ x
xmax" G7 C' `+ z4 c/ |/ y  d6 V- m3 ^
ymax3 m/ F+ e; Z2 Z1 `; d% D) y7 I7 A: d) o
global-reputation-list2 Y  F( {, E* n+ x  c3 U

# g2 X$ K+ |) o% c6 t8 w9 J% X$ A- u;;
每一个turtle的全局声誉都存在此LIST" s. n6 T0 \0 L$ D
credibility-list
& R' k0 r  x1 ];;
每一个turtle的评价可信度
3 F) G" U* v1 Z8 A' O" Hhonest-service
9 j0 g3 X* V" i0 lunhonest-service
& G" b, H0 q; l( |! _* `" H+ G3 Koscillation
' Z6 _1 w# n# b% v1 @: B3 Wrand-dynamic
3 L" r4 |) o! o. F3 \]
4 ~) B1 Y4 p; J' {5 ~* W# }" f
) `4 P0 p$ ~) F1 Z3 E1 v0 k$ fturtles-own[
8 E1 T  ]% V: A# b3 Y; J1 R# y) Htrade-record-all
4 \( V& Z, B( P' l;;a list of lists,
trade-record-one组成
! v1 D$ M0 l; A& u8 Ytrade-record-one
, c% P4 Y3 `- `# n$ ]0 A, u;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录" s* A4 A  c+ `& p( t( N
# I: |9 Q% D, N; I( m& k
;;[
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]]
( y5 F- \! w" @, i& Ytrade-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]
  Z# o, \/ S2 q+ @8 J0 tcredibility-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
# s1 y/ q+ m7 T4 @  sneighbor-total
3 p. @" ?1 h" j5 V* N- ^;;
记录该turtle的邻居节点的数目; f* w) X8 N/ j7 x+ p( P* X
trade-time
& M: h/ B. Y3 R$ O9 E;;
当前发生交易的turtle的交易时间. o- Z7 c' `" A& t# e
appraise-give! N" f0 G/ u9 ?+ d5 M( ~% [, u) o
;;
当前发生交易时给出的评价& F/ Y7 ]9 p) Y- R8 n8 e. |5 _
appraise-receive
* M6 v5 C$ }" A; S9 M: a% g;;
当前发生交易时收到的评价
1 R, b: R$ K! T) iappraise-time8 x2 r7 i, z2 v9 G
;;
当前发生交易时的评价时间1 ^$ N: k( }' \  p$ ]& Y& C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 w! I$ H  h# `' [! m
trade-times-total% Q& u3 x' W; h) I1 ?0 Y" j
;;
与当前turtle的交易总次数, s5 M' d' O! H6 g
trade-money-total* D4 u) j" j/ P4 N
;;
与当前turtle的交易总金额. c# D' N) u4 r/ v8 o2 G
local-reputation
1 r4 Q7 T: u- Oglobal-reputation
! ^- x/ {" l, {0 y& Ncredibility
; ?4 Z! k! n5 R+ H& r;;
评价可信度,每次交易后都需要更新
& o" @9 ^6 H2 b' Tcredibility-all
; P: V, ?6 Z4 E. d. d9 w$ b: |;;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
( B9 m) H' f; ]# _) b0 q6 i' p" s3 L" n- I
;;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
3 x2 P6 i" }% Xcredibility-one* Q9 w4 C; @4 r. E) P- s
;;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& R% m" i9 e. p5 x
global-proportion
0 G& W9 }! y/ l+ hcustomer
6 r* b  u* p, p+ y- }customer-no( ]+ u1 N  ?% m% y0 s
trust-ok
* w) z7 m2 x2 J* J! Itrade-record-one-len;;trade-record-one的长度2 n' Q8 t' O+ U! A$ b+ O
]: A; Y/ y, f: I* X

: R+ m+ H2 t( W;;setup procedure
  t# e: ~, Q0 y( t6 `- @; k
+ H8 o, V) S) J/ ^to setup
( P0 v( }5 @8 i6 {. v! h- }% x. F* ^' K' t8 C! o, e0 z
ca
- ?2 ?' G+ p5 i# D  q- Y5 m$ U
8 \+ Z5 c( F% @' g1 B, U2 u$ K5 s
initialize-settings
; @% T7 w9 l2 d! _7 F- D2 }

. A. l3 H/ a$ b9 F6 P) s% A' Scrt people [setup-turtles]

3 G$ ^  T* H1 F! t6 _) ~/ @! V1 A: |2 S& X
reset-timer

. y& l! g( w, @: I7 d9 l
% C+ _3 ~5 ^5 R0 spoll-class
2 q7 e* I: x; ]/ ~
% t9 }' v7 E  P; @
setup-plots

1 Z/ q* h4 B2 }2 f" }9 w. X# ^9 \4 g
- h' V" x# r! f9 F6 G' Z1 t: Bdo-plots

7 I5 O# k& @% [) }! iend
" \0 F  e9 W& m2 @% n& O  z: k" \) H  O
to initialize-settings% K6 U; X" E* s* T0 g8 L

& k' A5 A* n5 l& h! v0 F- b7 qset global-reputation-list []
% y" k7 X, a, l- a0 Q. M! h. Z$ |

& _/ y4 a5 L  j+ h0 Mset credibility-list n-values people [0.5]
0 v: |2 F0 T4 N+ e( \4 Y

/ F9 X  c. |7 {% x* M6 Kset honest-service 0

8 x) w' K9 l6 s* \+ ?, d+ j$ D- v( H' n; P1 F) N1 }) W
set unhonest-service 0
# {0 A% b+ _6 T+ F1 x% ]( \
# ^) y, Q, U1 ]% S
set oscillation 0
% K7 o  x! a7 Z# h

  E& P7 `' r0 D' u6 rset rand-dynamic 0
4 ~$ u' c. q5 |  p/ j- t
end9 B! A1 v6 W/ ^/ X, T. ?8 a% V
# d3 `  q9 e2 n2 g+ z* K/ g
to setup-turtles
' g# K! G4 h' K+ L' P  _set shape "person"
" D) [! n! ?7 F4 o( Y: }- C% isetxy random-xcor random-ycor1 Y6 I, D% N/ `& J3 |1 S
set trade-record-one []. ?1 N! C2 G/ B1 F

1 `8 @: Q9 f* \' |9 Oset trade-record-all n-values people [(list (? + 1) 0 0)]
% z0 ]$ y" l7 u" b7 `+ f

& \% t! o6 F. X: f- N) V  xset trade-record-current []* e! D' p, a. k: w8 p& U7 G0 G; a* n
set credibility-receive []
2 [9 j8 }0 i' ^" Q) S/ U2 a' Cset local-reputation 0.50 w- _) h7 g  Z2 ~
set neighbor-total 0; _# P9 I' P& h6 W0 O2 N5 A
set trade-times-total 0; E( M2 q7 q- G& |
set trade-money-total 0
  H: V7 r+ b: Wset customer nobody# o* F# ^) L' A2 ^7 |& [7 M$ u& _
set credibility-all n-values people [creat-credibility]% Z7 w5 D  I* m3 I! z; ~' K
set credibility n-values people [-1]. E# ~" W4 B  J; S7 k# ^! i$ ^
get-color
6 P4 G2 Y4 H  ^' X  a1 J

. k2 s/ Z$ L1 g% M" O9 L8 z  B) send; m! w# O6 ~% b% L( j% j
2 H& {6 F, \( j$ `, [+ R$ h# c9 E
to-report creat-credibility" x, ^/ @0 ]$ ]# H
report n-values people [0.5]# [& u% p3 ?/ r# G6 ~* @
end+ y: m3 y/ r% J3 \" b" u
) u* Y. J6 m0 m7 ^
to setup-plots
2 J8 [4 n3 T) Z. {) k& P: K7 b+ F1 z' i+ W) X$ }2 P
set xmax 30

4 u8 c, @* m% K9 h" I; G
, W2 q4 ^1 t  U+ L. W0 Oset ymax 1.0
. v# z) u) k: p5 _+ w

  o9 o4 M1 _" q  tclear-all-plots

2 Q% R* _9 |; D. L7 K$ Y9 q" J" c' c2 F: y5 Y# ]5 j2 ?% O
setup-plot1

+ R6 [  I- D  S( W% d1 N, v+ l
: z, D& s7 z4 i: g, D& R$ Usetup-plot2
8 d2 L" [$ j% h/ |
4 h# S1 e: A, J0 I; K
setup-plot3

; m$ P4 f+ k8 \" |. a& w% E1 R$ wend
% a- `& C/ P! I2 s4 b4 M+ g; e
# k4 {  p  Y4 s) q;;run time procedures+ I: m! \# d- d( P* J

' M0 o9 D% \6 U( h6 w! Gto go
) N8 q' C' H+ C4 Z( q! @- e( R4 W) t+ N
ask turtles [do-business]

. k  r! ~! J0 h% |" y" Jend
5 |" H% w3 u9 _1 `$ c& A4 ]7 z: ^5 i4 X1 E. `
to do-business
6 W4 Y9 E/ H* J' L  H1 X
. j# x/ k  H" f# p8 N

- c9 m! q. b' D! t& H7 H( {: Nrt random 360
  @' R+ D, f4 U) O

& f; [- @- F" r! V$ yfd 1
8 ~0 p7 ~* g/ D% j  e+ L
; ~; d0 F4 [0 L0 g# E. U2 ]
ifelse(other turtles-here != nobody)[
- C7 P% w2 x; e3 c% ^1 w1 l( e

* `' q; C1 f& c! O- a* S& @set customer one-of other turtles-here

- K$ C! @7 d7 `( ]& N! r; z7 ?0 U! l% A  t$ y
;; set [customer] of customer myself

: e, d  _- ?4 P5 v, ?& E8 o* {! n! @, g+ M9 j% j! c8 s
set [trade-record-one] of self item (([who] of customer) - 1)
  R5 @' q& w3 r( E[trade-record-all]of self
6 l6 I" F6 E- b$ G! c;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- d8 X) z8 W/ R" L, W7 k

9 D) e+ [" I$ P, p8 t: [set [trade-record-one] of customer item (([who] of self) - 1)/ t# l# {& ~  v$ ]( B
[trade-record-all]of customer

7 F8 ?' q8 n/ v5 M! R( j- a
& p; A" a6 q, `6 X  }3 i1 n1 kset [trade-record-one-len] of self length [trade-record-one] of self

3 X/ v) `' @4 L) P4 q& _, g4 b/ _/ R. Z) ^
set trade-record-current( list (timer) (random money-upper-limit))

- C  k) \6 D" }% t) y: v0 y: @7 F" _( w' M6 w1 R- Y/ h( ]; O
ask self [do-trust]
& B# s. |3 W' p' B; p;;
先求ij的信任度% i. A/ X: ?) V# n2 L9 j

: ^4 z) [( Q: a6 p! w8 Pif ([trust-ok] of self)
/ W0 ]' @' r1 `# F/ c9 \;;
根据ij的信任度来决定是否与j进行交易[* ~5 L# P5 \  ]* s' T' S8 W' ]1 i8 R
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, i' h" `/ E! M5 b3 j0 F, z+ [+ [( C  F8 p4 p1 x
[
. \4 [- X  D  r. U

& \- v2 h; h4 T- |- w0 Fdo-trade
+ }& K; ~' D& U) l
, D0 ?  Q  V: ^
update-credibility-ijl

$ g0 x. `4 B' ~2 Y9 _2 [+ s! ]- Y, A2 s, W* B$ r  `1 z% B4 O4 F( ~
update-credibility-list
/ p" y  p$ g; X" ]) B$ E1 G

1 Q6 u0 H1 G* I' R# z! y" D0 _0 u! J! t4 F) d
update-global-reputation-list
& I% b8 l0 b) @- I5 N! A
0 x1 d) f9 D9 D6 t, h, `8 {! J
poll-class
9 Q+ J0 b( H& M

: t9 M; `/ ~+ n3 T% y: V5 sget-color
6 o3 n3 Y4 W6 e
: u0 M4 J! W  Z% R7 m% O
]]2 @: R* Q/ c' C

7 J- |4 e8 ?. \;;
如果所得的信任度满足条件,则进行交易
$ J" V& _! n1 t
' _; H) n! o% q# \/ w$ R9 X) Y[
) J3 o7 K# R4 F) N% A

% T" a9 Q2 I4 q  E. s  B9 d+ m0 Lrt random 360
3 q% t7 |$ s& {( ?# ~! W

1 K: o9 B/ M9 Z7 ?. V$ Dfd 1

! N+ l+ s# H- E: d( K4 A; }7 X# O: T% x# Y- a$ w
]
2 J# t, k9 E0 Q$ W: J, g6 ?
1 Q3 c1 M3 V8 {; E" C0 f8 c
end

& V+ P& L; Y. r9 _$ Z$ c+ q4 a: j/ B$ n; G2 ?" X
to do-trust 7 m. w% k, ?: D
set trust-ok False
* R2 `+ S) w6 Q6 i* Z3 j4 H* j; p" J
& O. G: h* D  s: ~4 u2 D. _2 g
let max-trade-times 00 {; S; S. Q8 C+ a3 r9 \+ j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% @; o) d; u1 xlet max-trade-money 0: Q. }/ i; C4 f5 f* x- C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: K$ l; `5 ?. }$ e/ f9 |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) y9 s& f* [  j0 |* @( H+ S) `5 [
8 X; G. ~, J6 w' R
; i1 M1 }) o$ q' s0 T# B
get-global-proportion$ A7 ?: W" y5 y; p- \: \& r: H  T
let trust-value
8 S0 G) @4 b# S, ^& r. z6 c& E, J6 plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
: I* I$ i$ R9 Z
if(trust-value > trade-trust-value)! `4 Q6 C, Y  S: l) X
[set trust-ok true]
# Y" p0 `* }7 G  Z* q/ ]3 Cend
- }6 j" x: |' C1 E
/ d9 i- [- {+ y& `* k: E% \; |to get-global-proportion* j* k7 J4 d1 p; x/ O* h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)  Z( P! q$ M# L- k! E
[set global-proportion 0]
& Y0 }3 d6 P1 u0 w) v' U- \: d[let i 0
+ [: W& b2 d% o( Wlet sum-money 0
5 L  o/ v4 A8 E% |while[ i < people]
9 F; l- I- q) n, m2 c[
$ H& L0 G! q- yif( length (item i2 X( r6 V9 `( f: [" k1 n
[trade-record-all] of customer) > 3 )
! G( G2 |8 b0 d9 J, f- E
[1 H& ]0 {& n: ~$ F7 `4 X& N/ G3 Q5 p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 Y( h# s: K6 O1 Y/ T1 b
]8 A" z/ l4 A! f( Q* g1 u. e
]
, l9 c1 S+ l0 _0 N; U. \let j 09 b8 x( O. t+ N
let note 0
+ t9 K3 ?( q9 z2 T8 g! A9 H: iwhile[ j < people]
0 e: B. I0 F1 F6 K2 H7 p[4 F# v+ m4 M5 J& m) }, e
if( length (item i
5 s' J8 ]* E, g, L2 V& @[trade-record-all] of customer) > 3 )

+ q/ d" I/ K! j; R2 T[- J& f+ T8 d" R3 }  f! F
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 o+ }. J  s8 X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]4 A4 _2 C! Y) j- w% P& q& \
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* ?0 h' u* D  e/ p5 L* A/ w1 O* z, K]
, r$ V# E" i+ `# H]+ z4 Q. X, G6 e+ S
set global-proportion note- {& Z9 y! L, c: B
]: P/ J5 k1 b& g# \8 ^- R( }, V0 a
end
# q2 n% E( C6 `, P& a. g5 d
% s5 Q+ k5 U! _; c* t( X( ato do-trade& ]3 `2 l& F' t% d$ T. h6 ?, Q
;;
这个过程实际上是给双方作出评价的过程8 r  ]& Q: z$ \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 y" X& _& O- }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 d3 {* p/ k8 U& w9 T5 u; b& nset trade-record-current lput(timer) trade-record-current
% J; v/ g8 {* G+ J! i9 L' x;;
评价时间
+ k6 ]5 e; C& i( }9 R0 Vask myself [( v2 e5 ^  g% A' k2 P# D0 N
update-local-reputation2 ^. Y3 O( b) R! n9 C; C4 S9 L
set trade-record-current lput([local-reputation] of myself) trade-record-current. `; @! `; c5 Q) Q1 d
]
6 ~0 i% D! V8 G" hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself9 d) s! x- u2 n! }! z
;;
将此次交易的记录加入到trade-record-one
  L5 Z6 |4 E3 s- P8 y5 H7 G$ ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* n- F9 Z* `/ _8 ^9 v4 g9 @  e5 Y/ dlet note (item 2 trade-record-current )
0 r( p# v4 ^8 W) hset trade-record-current
& Z- {  z* g% x# d2 H  H/ d(replace-item 2 trade-record-current (item 3 trade-record-current))

. n# N* ], }) ?& o% y/ p" }set trade-record-current( N& k& B! X( i1 r: F- C
(replace-item 3 trade-record-current note)
' ]8 ^. V+ r! i9 Z: @0 v- Y
7 w7 ?* o$ o6 l9 P$ ]' Q

; z3 \: x7 m3 B  D1 P9 Sask customer [
7 k1 h1 U- e, o& m1 Y! y5 P" mupdate-local-reputation& U, v' ?' v/ `. z1 ?) i
set trade-record-current$ w( c1 B, D: A/ F# K6 }* f! x( m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
' S* H# @" G4 n# q, i% k! T# a) A
]
7 c1 d& B+ U' f  r6 v! ]
0 T  }" i6 E, R7 W

' L7 F" X7 ?2 }) T  ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
0 Z% P2 w# H' w: b6 k/ x% s

6 p% z4 s! Y  r( ^- Iset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 f$ K! b. l) c; ?9 U4 |# i;;
将此次交易的记录加入到customertrade-record-all
9 T2 a5 l* L1 g. C* [end
( [4 c% i2 h; l7 P/ ^0 h( y0 z4 \" d- g
to update-local-reputation
0 s  |' o6 ?! F+ O2 p% `set [trade-record-one-len] of myself length [trade-record-one] of myself+ o5 O2 e8 u1 f
6 M: D8 R$ o6 A" o& y

/ W9 U8 v( k8 T% b# `9 K;;if [trade-record-one-len] of myself > 3
6 x4 s; \+ R, r0 V1 _/ B6 j+ `
update-neighbor-total
& d4 N, ^5 `. U9 D1 @2 R;;
更新邻居节点的数目,在此进行
) R$ p9 n; ^$ S7 E$ M: B% Olet i 38 {, N( w# K' g$ |0 \
let sum-time 0
: S$ a2 F# N" U6 Kwhile[i < [trade-record-one-len] of myself]
5 S9 N! h! f+ P1 Z# J[4 {1 s6 @  Q8 h7 }/ |# J5 @: k& z, T: K
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
, x  h2 Z$ Z& L7 \$ h! N% m5 Jset i+ p" h) U8 {/ I1 M
( i + 1)
$ a3 Q, z6 V0 ~/ U$ k
]( }) C. F+ k5 ?8 B' p
let j 3
3 S; [, B6 p) \/ Vlet sum-money 0$ i+ x% i6 f( [
while[j < [trade-record-one-len] of myself]
5 G! @9 G3 f  l/ @+ a[+ P+ ?9 i# ^' |- U( o
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)
6 O8 @8 `2 G5 ~1 ^( B. \set j
9 e! n4 |  S$ A( j + 1)
* o' [) q0 m; L. O
]
* I7 {) p3 d; O  ]0 [- v6 rlet k 3
8 y1 z9 f" D3 U1 _+ \let power 0
3 t! n$ C+ g7 U( v0 Z$ g" X# f$ p* }let local 06 O/ H+ o# ^0 }; w  n* O- ?" q
while [k <[trade-record-one-len] of myself]9 K7 u) X- k8 U
[& g& P- g' O+ b" r- w/ m
set 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)
; y, u9 X. Z/ a& W1 Dset k (k + 1)
8 L9 r5 r, f, {]
; O! w, G, `$ B2 r- C& Kset [local-reputation] of myself (local)
3 o0 s7 r+ m- M+ ]1 m/ yend
- f1 V3 B3 w! i: p; |' p" c0 g; P$ ]+ i  o$ S" g+ D
to update-neighbor-total. h; x7 O+ M1 N9 N

, x! C0 g, C0 \$ f! F5 K8 s$ Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 n1 L7 g% c6 \5 a5 B

7 B+ M8 r3 b  _' r" o- Z, M( Z

! S$ Q8 p3 e+ }+ j9 A. A2 b7 y8 uend  a; p2 h) v6 c  S7 V
* t1 v1 p9 G0 i0 l
to update-credibility-ijl 2 i! n6 O: R9 h6 ]

. q0 T7 O  h1 M/ k. e: y6 x;;
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。
% ?* k5 u" C! B" I( M& nlet l 05 m8 n) W( J. I) N6 @
while[ l < people ]3 N/ V3 Z0 n9 z/ L' ^$ o' t$ d
;;
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
0 d* K! B3 B) \% i8 h; A* l[: S9 H% b  @+ n5 y3 k
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 E- s: E" {9 ?; w) {if (trade-record-one-j-l-len > 3)
3 B' t  r& @+ Y' ]2 ]/ z6 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, d$ {2 t* I. J7 N
let i 3( O( O% L( M: p" j9 I& m1 |6 R
let sum-time 0
' I8 b5 V2 H1 L- B. A; Qwhile[i < trade-record-one-len]/ Z* M, a+ }# [. s& }
[; |! ?& g. K; E0 p0 p# u- N
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
5 C0 y9 M) X& Eset i- a# |3 r- H) x' T2 o* }
( i + 1)
% ^, ]( h2 |' p0 t: T; [: @% T4 B
]
  `3 W. Y' v3 ~7 J- I8 B; llet credibility-i-j-l 0
) ]: R% H- Q) O! Y/ `;;i
评价(jjl的评价)8 }5 c  z; {+ [; f  `
let j 3: T9 b3 y! Q" u' f- ~3 S
let k 4) D9 q" o% X+ O. U$ L. L
while[j < trade-record-one-len]) P2 Z: W; e  }; G
[) H& c) p0 R& K0 x. }+ m; I, |
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
4 W, H% @8 V4 W! e" |set 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)
- S5 R/ s* p6 X# w/ `1 X. ~; a3 i' xset j
% a! p0 c! X+ B" H/ C( j + 1)
3 T7 n& o& o% R8 e) E9 s3 U
]0 O2 O2 [& f; k
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 ))
( }. U, n$ A3 a5 `+ b. u" \3 m) [, D6 q3 }  h8 N

9 h; d! b% J4 k) Xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 w2 w9 G- F5 s7 D' w9 e
;;
及时更新il的评价质量的评价
$ A/ V$ @( X: h$ g% Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% r( b5 i3 m1 ^  x6 m6 N
set l (l + 1)
! O1 x! ?+ H8 e' G( W]; [$ }' b+ E2 u7 H! k) P
end
% P6 ^4 G$ q# Y  v; B$ t. v" }; F' B( t# e
to update-credibility-list  L* Z8 j. E4 X8 c: j
let i 0
; m: b4 Q+ c, ~  Ewhile[i < people]# `5 w& X- b0 D$ }( |
[' q$ V3 V# l5 {( F
let j 04 S( l3 n, e2 k+ M& D
let note 05 V9 ~+ e: Q9 d
let k 0; O' m0 ]: C( h" E7 I% X. G9 h* Z
;;
计作出过评价的邻居节点的数目0 k9 t5 D% _4 W4 v, C
while[j < people]) r0 q& G: O7 p) {* W
[
2 j; y2 X( Y8 X* p! Z6 j# M* fif (item j( [credibility] of turtle (i + 1)) != -1)
8 c' b! p) N' W2 ~6 G;;
判断是否给本turtle的评价质量做出过评价的节点
/ \, p  V# Q2 D[set note (note + item j ([credibility]of turtle (i + 1)))) u% m. A* Z  ?9 L8 ~
;;*(exp (-(people - 2)))/(people - 2))]
3 }+ g$ M3 k2 }+ i9 F/ b
set k (k + 1)
0 O; i  s" w9 ?7 R  t3 }]  }  _# I$ [: [8 d3 t! W- y+ b4 F
set j (j + 1): U/ i, m, |( S5 C
]' o0 g" m. M+ I9 T- k! P
set note (note *(exp (- (1 / k)))/ k)
: u# w8 I  }) I8 sset credibility-list (replace-item i credibility-list note); n! y) n# N/ Q% P, v
set i (i + 1)# A1 @2 ]  G: V; ?
]6 R6 i' P# h4 I/ ~, c
end+ Y, d5 d; B$ N9 e
1 C* w2 B+ C) b% X
to update-global-reputation-list8 S4 {% x2 _+ x" g; p, U
let j 0, l6 N7 p! b" H; c% V# Y; w
while[j < people]5 i7 ^/ j; e3 S: g& P6 a
[
% E' ^4 [" ?1 M3 l& r8 m, ]! F; Llet new 0
! Z+ e" Z, M5 D: E;;
暂存新的一个全局声誉) e5 x' M0 K' B9 f4 }7 x
let i 01 K. @& H6 D! y9 C# s- q! M
let sum-money 0
% i+ |7 _' b5 Z7 M( r  flet credibility-money 00 t! b" K1 ~& O
while [i < people]% W- I1 B- [% I& V9 J; g* g' z
[# E* V+ i( y4 k7 M
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))* q* S6 j2 h: a0 ~: q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
9 c+ }* M& S" f- X( q4 W: oset i (i + 1)
1 S1 W( J6 v0 {: c8 B" i]
( o( J& z2 @# d. U  l' A- `5 Mlet k 0
" a& o9 Y' r1 U+ i8 slet new1 06 S  O' X. v0 \# ?$ m
while [k < people]' o; o6 K- U: v  `( J
[) y! A( c- U) X# a7 O+ T
set 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)" g# U3 d3 i3 Y9 I2 |: g
set k (k + 1). {6 `: O* U% Q# w: y6 l
]
$ y: p0 A" P7 s* z9 Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 T2 @# T, @8 ?1 p7 a7 G/ a
set global-reputation-list (replace-item j global-reputation-list new)
0 ]$ t" ^/ ^  _5 \: J# l. ]8 j# mset j (j + 1)2 t& K& _4 t5 _3 V
]7 h) i/ |0 i5 j/ _- }) z
end
- D: |6 [' a* b0 G: ?5 J: B8 H$ u1 f! _3 P8 t

2 l' C4 d& }6 b: w( {7 R8 t5 ]1 I) r6 b1 t
to get-color( g6 X& X0 Z2 P% }4 S
9 S9 X' j8 [- ^% t! _6 e
set color blue
2 @" ~) S" s/ X+ g; R# U# `4 M
end
; Y$ f: z# t- }2 g( [8 x, Q& m3 g
8 H/ |: P' s( i! h  b7 X  eto poll-class$ }% N0 f2 t- \" t! i
end7 k! |1 O5 w0 w4 Q

, `* n* N& S- H  v7 Kto setup-plot1
, f' x% C$ m& r7 r( v2 Z, v' `% _* Q+ Q
set-current-plot "Trends-of-Local-reputation"

; _  S$ I7 V) _- @& n- p4 `* o$ Y
& Y" S9 k. |. T$ Rset-plot-x-range 0 xmax
3 _- N8 {+ q% `

+ ~( s5 N& c- p+ K/ K' qset-plot-y-range 0.0 ymax

  z9 F; o% s5 F+ o! j9 V1 {4 Uend/ n6 q5 l/ d# w. C

1 |5 Q! E0 h; {; b0 S- ]to setup-plot2
, c* q5 f* |4 S: B4 W& u8 a6 y8 q7 ~' l
set-current-plot "Trends-of-global-reputation"
6 f! [& l2 Y" `

6 R/ _6 u. G0 k$ B8 N4 a! s: jset-plot-x-range 0 xmax
" y" g% ?, p  }9 ]' p4 X1 H
# }" t$ i7 P9 z' X5 \  M# q
set-plot-y-range 0.0 ymax
# O1 N& H0 S- F1 U8 ]
end
2 ~+ i' \1 O& E' v/ y- p, \
- x  k! E$ m9 I6 J1 E9 y  Yto setup-plot3
$ U. w# R3 R8 {" A2 G
. h% v. Z- v: z9 Y( qset-current-plot "Trends-of-credibility"
: G: L7 \3 j' ]) p' D- }+ q! w
9 N; s" }- K/ ~% g. W
set-plot-x-range 0 xmax
( \. n( W! e1 m( }& ?
3 p) r: X; }  ?0 ~7 Y: T
set-plot-y-range 0.0 ymax
: S- Q  q: z: D5 e
end9 F7 g* j4 e0 N$ W, r

) L  l, ?7 c$ @* U9 H% O: fto do-plots
6 P) h. q2 n, U' P( l, Nset-current-plot "Trends-of-Local-reputation"
: [# A# X1 J( B" m1 \set-current-plot-pen "Honest service"
' w4 U3 [# t- j/ }; h: ?# B2 Bend3 _! ~( A. o' G  J- y
# P# r+ L: P3 a% O  j1 [! r
[ 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.
" O4 [$ G; T7 H  g) r+ u$ V+ m5 T3 @) ^" A% Y9 Q" [: E
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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