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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 L7 }$ a7 t. S/ I; W& t( gto do-business ! i7 N+ b$ D4 c! t8 v
rt random 360' n# Z' S+ e" z- w
fd 15 ]' o  \# |( V1 a* \, u/ s
ifelse(other turtles-here != nobody)[. F; n/ G( p8 D/ Y- B. ~* |
   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.9 a; ?# N& a  \  }" k
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
1 _% u3 h+ @3 u, i   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: L# Y! @/ ]* y  y9 H# ~5 S% t- r" h
   set [trade-record-one-len] of self length [trade-record-one] of self# v) ]6 w( U" ]: x/ V
   set trade-record-current( list (timer) (random money-upper-limit))' e: d5 M, P9 ~6 z- w! V
# U9 Q" t8 k! p  ?0 A& x
问题的提示如下:+ A1 Q: W( X- W% @  g3 `
0 G3 n$ L, {" m7 Q- \
error while turtle 50 running OF in procedure DO-BUSINESS
: U3 B8 {( L, H9 R$ ?  called by procedure GO5 b" w  `* C# P
OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 J" H8 R6 @- {0 f
(halted running of go)+ ]( p8 R7 K3 x1 M" y

* C) h7 h2 _( T4 N; q1 L! |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~~
& N0 u2 w  \- i" I; M1 n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
! |4 x/ {. I0 D! K  A4 v1 pglobals[
6 C" F9 R0 Q8 L% j$ E; `xmax4 u9 s' {& |5 W2 J9 A- k4 A
ymax4 U. \6 U! E$ N& U
global-reputation-list/ ?$ ]/ H) B! |0 |2 e* w% ?

' k, t. H. [- c2 C3 [;;
每一个turtle的全局声誉都存在此LIST  {/ p' c% o! n: J2 n
credibility-list# T* N. j: G4 v4 C0 R
;;
每一个turtle的评价可信度
! L' }1 S6 b8 \- Jhonest-service
/ a! d; T: a3 y4 r: funhonest-service
8 }$ u6 W) X# H! k4 @  xoscillation, w( M' E; Q2 y
rand-dynamic
  X& N3 `, Q+ ]1 H]
; m: E# O9 k6 X7 {) e+ Y$ U5 i. S! ~" D7 `$ L
turtles-own[) p+ R" A8 H4 K3 u
trade-record-all
, Y* n) u3 E, \;;a list of lists,
trade-record-one组成
8 S/ C, Y/ A! {9 t* `4 Ntrade-record-one
- a( P4 X' B" q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 J# P( |( R4 P+ i
6 l- C% k; c% o3 c7 Z( E
;;[
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]]
$ N0 R( S. g% {+ r* |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]
3 q. u! m/ b! M0 a3 }7 [credibility-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# ~! w, |* P( d$ d  l$ I# Q
neighbor-total
3 \8 `6 [+ D  Q3 n;;
记录该turtle的邻居节点的数目, T  t; _* R& t4 \+ ?
trade-time/ S2 z4 p+ b+ S$ G7 P" L( @7 K+ `
;;
当前发生交易的turtle的交易时间7 y8 ]" I1 ?8 h5 q, T4 p8 a
appraise-give
3 V% P. z9 n) J8 o% Y;;
当前发生交易时给出的评价! ?6 @0 S$ E, B
appraise-receive' v( p9 i2 A+ v- h7 v. ^/ k9 Q4 g
;;
当前发生交易时收到的评价) b7 s, k. c# u% N8 M' B
appraise-time9 B8 T* Z  ~% l) O
;;
当前发生交易时的评价时间6 O4 a  V  Z& g8 B
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 K# S- [8 m1 C+ q, J5 _0 c, ^trade-times-total3 ?9 d; W, |+ |" j# A0 p6 s+ O1 b
;;
与当前turtle的交易总次数$ H4 [. U% f; F& J. X, W
trade-money-total
" K& h0 o% ~  s;;
与当前turtle的交易总金额
& n& m$ F, s/ ]$ xlocal-reputation
( k* |6 ~3 w/ u4 ^3 Jglobal-reputation/ g* o1 B4 N8 V9 ~. a
credibility8 z' a0 o- f8 r3 N/ |
;;
评价可信度,每次交易后都需要更新- K9 }) C$ g( N- g
credibility-all3 \, k8 c) W6 M' a* A  U
;;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0 i3 F1 m3 T* \  S3 z
& O, H+ H' Q6 t4 ]/ Y
;;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0.51 ~2 d$ X) l# e7 |$ P
credibility-one
+ T5 k1 Y! _/ ~  B' s$ P; t" Y- J;;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
1 ]7 p! G( O% i! Z7 c5 q9 dglobal-proportion$ G4 `5 y+ U1 g$ ?8 Y
customer. P! k! Y/ A$ c8 H
customer-no
# i9 S, b2 y" i! Ctrust-ok0 i% U+ s5 g* u2 s7 y8 M
trade-record-one-len;;trade-record-one的长度; ^# M. Q- K0 p0 q' T6 n0 Z# S
]2 U& v9 G$ N5 H9 [- _7 l
; F. h" W1 A; E- w4 A
;;setup procedure. J7 ]+ K* ]: S2 _2 m/ k
. W- ~. g3 _' ^+ A0 W
to setup. O) s7 g; K$ b. j% C: n' [/ O
0 [0 F" A: ?' Z: u) C! m& [
ca
5 C3 t# O. o, r; [
5 W3 \4 I/ k/ ^8 `2 i* w
initialize-settings

+ N; v0 K1 Y" R' U/ ~, y/ F0 K1 @' `9 A) H' ]
crt people [setup-turtles]
$ I" `# [7 l5 J, }! V. {/ C

, a5 h4 Q8 @  m( }+ areset-timer

6 [- @& j; l( G6 b3 R& a7 \; ]. J4 g: b
poll-class

: N7 j3 r3 Y8 [+ Q; w7 |, r9 j8 n5 m" D  F9 E# {' |5 x( O
setup-plots
6 M4 d% w; o& f% L5 Z; V5 U
8 i4 h! s+ F: y
do-plots
; h% w5 w0 I1 [
end. s5 k$ x8 ~- o/ D6 W* F
" p, V! Z4 D) N4 H+ f
to initialize-settings- \3 M6 k5 |& C/ _1 P- G2 ^

8 E  X/ t% a! x5 L  I2 l! |set global-reputation-list []

6 N0 N1 e8 j3 `7 S2 H) [
9 B' W8 {8 H# v4 W, P) ?# }set credibility-list n-values people [0.5]

" V, K0 ]% A2 L2 L( V
0 H8 D! v% {$ ^$ ^: }' Q) [# Lset honest-service 0
" \" ?+ d( f9 X2 s5 N, a
7 g' y6 r5 K0 z9 H9 r8 y
set unhonest-service 0
6 g# `. }: G! L+ p/ }: w
: d: w  |5 ?+ ]4 t
set oscillation 0

  h, R$ U% |1 h1 O# b9 l/ _- ]3 U$ Z8 A& n: y
set rand-dynamic 0

# H& a$ h, S2 b# E0 G* send2 q$ b1 l: @2 i/ H6 ?" X) C# E

* N, y* K/ z' {) Wto setup-turtles / o2 s- |8 x7 d) I& ]. E4 d
set shape "person"
' B5 c; r) t' q2 \4 P7 A7 f. Wsetxy random-xcor random-ycor
1 p6 k# B, `: z, ]1 B+ U5 oset trade-record-one []6 l5 [1 Q7 [2 c4 s0 H" _- C: ]& u0 p
' L- G: z) R+ p8 m5 @
set trade-record-all n-values people [(list (? + 1) 0 0)] : j/ w5 n+ f; Z  W0 x% M, t

8 C  t: D$ m- Kset trade-record-current []9 x& r# i, V' x* Q! x; j. m% C
set credibility-receive []& D1 }5 R* F3 I/ k) \! y0 f4 d6 L
set local-reputation 0.57 S& h) M$ A  Z# A8 ?
set neighbor-total 01 d+ [( y5 `7 |6 B
set trade-times-total 0+ K6 S+ L) P% X) P9 G% l. B" a
set trade-money-total 0
6 W8 N8 r0 s" o! V, Y; P5 E1 Vset customer nobody% m( ?, K4 @' Q8 q! a
set credibility-all n-values people [creat-credibility]
! ]3 o+ h& i# ~set credibility n-values people [-1]; r/ I) H' x- W$ v. U" u8 a6 N' W
get-color
& f4 u' h- u! n" |- G  Z7 ?2 ^" i2 X
- L: y2 `/ M; R: P! Y
end% `3 k) k' y9 r, _1 I
6 s  Z5 z( n8 M& P# D: Y, m
to-report creat-credibility  ]4 T4 ~+ Y7 o( r+ }
report n-values people [0.5]4 p& o/ {" Q# Z% a7 j* r
end
1 }: A: P# }% F, }. k1 [) F& z' f6 C- X9 e, j; C
to setup-plots
  ?9 @8 \3 j6 `
8 C( Z* d- o6 J. l4 H6 Lset xmax 30
) m! C1 V* p+ X  m" W

, ]4 u2 u/ H6 Q9 z. M7 k% G( z, Xset ymax 1.0

9 g" w# c8 k$ K
' o, V8 ?+ R3 C& t* Mclear-all-plots

; w/ V+ O2 J4 b/ I& y, |/ {( ?, w9 g& A- w( P/ P
setup-plot1
% M+ }0 G( p7 W% v
, I5 g: K, ?7 o2 H( C; U
setup-plot2

* t+ E; a) T. X; \. O
6 X) j0 V* T4 P! @, }setup-plot3

# v2 a) N5 N% q8 X, J5 |end& P* q# c; Z- a6 y1 ]4 h
, p, m$ {1 h; f' C1 k6 m4 y: x
;;run time procedures
; d  l  f  K. t! ?
: t; k3 i1 s7 m8 D3 w+ H; E" uto go- ]% \  K" R3 T# ]# ?0 Y

  l# \. N0 h0 o: w1 j* Sask turtles [do-business]
1 V: }8 v. B& V* g
end
9 ~" S. t/ `7 [$ U8 U8 n
# E: }9 d8 b& y" Qto do-business
# }9 s0 a) x/ I. M  F4 m) l' s

* V$ H  Q, z9 H$ P$ K( T6 q
0 P5 a  w! n/ w5 zrt random 360
8 w( [7 f3 i, g8 f- t# L4 q3 t1 \1 ~
/ h  E% E% I# S. }6 [/ ^- ~
fd 1
- z. b1 H  k, |$ I. [& h- b. `4 p
2 `7 F  W. I; o  P
ifelse(other turtles-here != nobody)[

2 i8 |9 ~4 [0 j) ~0 K, e$ k7 m- [3 `; u* x
set customer one-of other turtles-here

- Z4 G  B3 ?4 c! J4 L% C6 I$ S2 g6 ]; Z1 L7 V
;; set [customer] of customer myself

+ t: @* E0 W9 |7 V6 U) r7 f1 Z: E: P7 k5 u$ R5 O
set [trade-record-one] of self item (([who] of customer) - 1)3 R1 R* Z  t/ @, {3 t" A  i
[trade-record-all]of self0 R& Q3 T' ^. E9 F2 K: {: w9 J- u& W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

3 o( \2 p" s4 f7 J0 W  i
9 r  C! a! m7 c& Q+ w$ p/ r; {set [trade-record-one] of customer item (([who] of self) - 1)
* L; R  d! w, a# R0 O0 }[trade-record-all]of customer
5 D' v( w; X$ e3 r2 N7 x
1 y& h7 F$ d- {$ Z
set [trade-record-one-len] of self length [trade-record-one] of self

: N' f6 ^" h( D2 G0 O
/ _; S% Q! @3 Y" q: L  C. O5 iset trade-record-current( list (timer) (random money-upper-limit))
- Z& C+ ]0 R. o; [3 _& y
* S. {7 S8 y7 d0 E1 y9 Z
ask self [do-trust]* f* _% r9 j  L5 |
;;
先求ij的信任度$ _9 f8 n# n& a; y" z. ?$ p: A; K
9 b& ^" W4 |: A2 n
if ([trust-ok] of self)# ?* c+ @4 g, ~  Q1 s  k4 C
;;
根据ij的信任度来决定是否与j进行交易[
! N9 C) g0 q: n+ t% O0 _1 xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself$ Z2 q9 N! X' `" }6 H, I

) c9 y; ?2 A2 I" A0 U4 U6 N[

0 G5 r- |  H/ t3 t! O/ T
% D5 X3 v+ W' A+ n) A% n+ Y7 [4 Kdo-trade

# m: o; G( w$ ]; ^. R% b( Z! _: E2 k, Y- |- @5 ]
update-credibility-ijl

7 `2 `3 E. x: t2 C
1 b3 A- r" w& u7 E& hupdate-credibility-list; Q+ Y/ x: p* q8 W/ `5 D; L7 a# N

  a" Q, _2 t. M
+ Q+ K1 s6 H9 _; o5 V* Rupdate-global-reputation-list

9 U- [( L# [7 U' h" H, Y' t5 a
* \) a# h' {& g: e' l1 N7 F) upoll-class
+ k& A# ?  m; x, U; j- p8 g; S6 H

9 d; y5 E; k. ]7 P" eget-color
3 r, K# Z$ Y) L6 V
1 }, H# W  \$ y& w; Y4 _5 ]
]]
7 ]1 k9 ~2 Y8 x
( m1 g8 n3 r, m/ f;;
如果所得的信任度满足条件,则进行交易- h) L) v$ v6 p8 R, k1 K

$ e" i5 {1 _# I" j8 _3 o[

& {$ x" P1 i3 S! j. _: r
$ R4 c* \; J+ `8 krt random 360

" ^. I6 h' {% ^& m2 n; b! K* ?; p7 b, ]3 w% e0 l3 [
fd 1

/ }- B+ l* p! x# ]  M% \; H: f, r" w& C) A
]
/ e" J! ]  i! X4 o: l4 R$ d/ a
+ K3 y" A& E: L% d) _4 P7 \
end

% S$ {% k2 b4 F$ {8 h. O9 s, Y5 L. G4 h* B' \$ M7 ]
to do-trust + K# S- X& i9 @( p: G8 k) @" v
set trust-ok False4 n; x) t1 m. [- J4 D7 q
. a( d0 B3 T$ C* H; F

! u: ]2 q9 y1 H9 elet max-trade-times 0/ F3 B7 b6 u6 J8 s" r( C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
4 T' @' n! ?7 K+ Y$ wlet max-trade-money 0" z9 \2 o- L0 ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 r# B* |4 W/ A% m+ O. O
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 R* Z; N/ g" U8 _% H
! l1 F/ Z5 Z+ S" @: V' W# {
5 P, h0 u  o, L/ T2 b
get-global-proportion1 s- |. E1 x2 S$ m$ X" |
let trust-value" I. ]* q8 A/ f2 a# f
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

, m6 `+ X6 S5 p0 vif(trust-value > trade-trust-value). m2 \. D0 \$ J/ L
[set trust-ok true]
, B& C; Y. g, l- bend
, n3 N( k$ M! K
/ Q0 x7 s5 ^( o/ ito get-global-proportion
5 M2 x/ b! }. g! U2 c% B+ Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) \- q# v. g2 T2 c
[set global-proportion 0]
4 q! G  S8 ^! z) P( `5 p[let i 0
2 Y, P; G: C% g" y4 w& olet sum-money 0
/ b4 M; l/ Q# nwhile[ i < people]
/ E5 B$ {& `$ M( s7 J) w[
5 H  I5 W! A. l' z) \2 Uif( length (item i
* }) D" Q0 |9 ?% ]: b[trade-record-all] of customer) > 3 )

( |: V9 C* b( M# {[# U- i/ p0 o. O0 \; M' F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# g# {1 [) x1 O: V/ ^]$ X( u% G$ R; W6 ~
]1 x# X6 W4 W+ I( D7 a
let j 0& J# ~1 ^, ]1 s- K- v
let note 0& j3 P' q0 A0 m$ o4 u* I
while[ j < people]/ h( m( Q% P; ]; Q7 E
[0 o8 T8 N1 v# `$ C% \
if( length (item i8 H. t7 @4 z& [1 P4 L0 e. Y
[trade-record-all] of customer) > 3 )
( n3 A# w- f& [; V  H) y) @
[% A/ @# y' }+ ~" K; l. o7 M
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) E  `1 {! Q3 J5 c8 \9 M7 W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ i1 I4 \0 Z" X& P8 ~& ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 p5 S9 ?0 @1 N/ \]3 e, F. u9 K' ?# b9 u" b0 p9 {, F
]# t* V+ e. K7 I3 _+ c
set global-proportion note
4 o0 y5 A! V* M6 Q' k, {]  q! P! H2 g5 Z+ U  S* J
end
  K0 f- X, |% ^% \' ]" C- D/ N" Z, B; Q
to do-trade# t7 P5 q8 L; l! h& h$ Q
;;
这个过程实际上是给双方作出评价的过程. x* {3 L2 k( k# K  N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% k; i+ s# n  G" S4 a0 R* J4 Cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价9 @) D. i* R. F+ B
set trade-record-current lput(timer) trade-record-current& X7 i" `( a9 {4 x% l/ A6 h
;;
评价时间: }- O5 @& I; j4 g
ask myself [
6 ~! }) Q& o- v( C7 hupdate-local-reputation* ?  g& o0 u* k+ R. {# r
set trade-record-current lput([local-reputation] of myself) trade-record-current# }# F! A+ I6 o; w/ P0 q) k9 t
]
# e; g2 w* `' Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself" K( o" ?7 Q) c( z
;;
将此次交易的记录加入到trade-record-one
5 R/ s* }+ L( Jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% q1 \$ j4 n" blet note (item 2 trade-record-current )4 d2 n# B. Z3 m( n
set trade-record-current9 K& n: n- I" c, K6 T; H1 d; l
(replace-item 2 trade-record-current (item 3 trade-record-current))

# T: p" d( h, [set trade-record-current
2 i6 ?; r6 W9 d  N$ X2 A(replace-item 3 trade-record-current note)
) ?  P8 {9 K( u! G9 T4 I  `3 G2 g/ r, y7 W" k5 s! T( x" O
8 T7 J/ `: f& Q8 E5 P6 |
ask customer [
, _' L" P$ U" M6 Vupdate-local-reputation* H3 {) ]( c1 X5 d. [
set trade-record-current
7 V& z  v$ ?, X. H4 k" i! P* g- f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* H( F# Q; V) w/ ^% R( {- j
]- N. e& J) |, R+ B! {/ Z1 I/ s
- i% u# w# j5 {) U
$ f9 ?4 g/ A1 |1 i" [, ]4 w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- ^/ t% m  R7 ~
* ]0 Y, c$ ]0 I& G0 X, I% u- a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" T% L  `% D: G8 W" P8 {; C;;
将此次交易的记录加入到customertrade-record-all
& T4 {* A" y7 W: S3 Dend0 E" A. H0 g7 D& r/ `3 \

* s6 p% O& H; H1 T' c9 Y9 z5 ^1 `to update-local-reputation+ Q+ ~1 i' h+ _& M2 k9 q0 t! Q
set [trade-record-one-len] of myself length [trade-record-one] of myself* B& u7 q* N- X* q0 Z( [

9 X& L" c7 T8 c1 w7 B; p  K' c6 n( F9 {/ \
;;if [trade-record-one-len] of myself > 3

! N! z5 c  S8 N' G( uupdate-neighbor-total; p9 B& ~( J" g; Y" B. V) I% V
;;
更新邻居节点的数目,在此进行
3 F3 i* l& F' Z  B7 v# @0 H) Vlet i 3
7 N3 s) R5 I% `. @! U: a( ilet sum-time 0
! Z/ a$ u! }7 b8 d) |while[i < [trade-record-one-len] of myself]
* r/ |, Y: I! R; D$ J3 U[) c2 n; s5 j8 T" _4 L- m
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! T( Z, D2 a  l3 Yset i; r2 B2 Z* \" \
( i + 1)
/ q6 x0 D3 ?# \/ R( F7 N0 p0 T- G5 r
]5 @8 O( {3 ~/ u
let j 3. G* N1 l1 F9 n# K( y" P. r
let sum-money 0$ {+ P# i8 D& F" F9 J2 E
while[j < [trade-record-one-len] of myself]* R7 o) G/ J7 l* }+ {4 |
[7 H5 R* Z1 Q2 ^- A, i) {
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)
4 h9 z- q2 J( i9 i) `; t! hset j, p0 S8 t$ e! f3 X7 l$ F
( j + 1)
, f2 K( Q8 d$ l
]- ?; f& s6 @% _/ ?# l
let k 32 e3 K- E* `! A: z, H6 h  ?/ }
let power 0) P/ R& ?! K& i+ i9 L5 c" k; v* l
let local 0* z1 D) |" b$ o
while [k <[trade-record-one-len] of myself]
& k3 Q* M' R2 N9 b+ c[7 h; D( y" z3 v$ i  t
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)
8 K: s% B  O6 nset k (k + 1)8 J% @* k* M" E2 ^- r4 P+ u
]  q7 D" W% _: Z
set [local-reputation] of myself (local)
, Q+ I  p' g# u# c  S0 J! Fend7 [) k% b" m, {% O+ H

4 ?. Y" B! Q# C0 P6 i/ ^to update-neighbor-total
2 s" E- q0 a' ~
* D" H, s8 C* N) r1 ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% s' K9 L; Q; ^5 |7 A
/ {5 \' |& Y7 l- `; C, u, U

- B, U* U  H+ {8 j' \end# V; U9 O$ x1 x" g
  q. ?) }+ r5 x
to update-credibility-ijl ! X$ ]' u8 H: X1 a/ a% s$ ^9 Z

3 g+ x0 _1 Q  d;;
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。$ p( M! g& P3 [: N+ D, g5 \: C
let l 0
' _" U! E: `+ R! ?while[ l < people ]) V1 v  b/ c- [! N7 T
;;
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
: v: B& A/ ^6 ^[9 o- G% R, n4 {
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 n; y( O- R) i  ~4 D
if (trade-record-one-j-l-len > 3)
  Z7 O( ^# D! l) v% Z[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
% k, b/ X. Q) m# e* Alet i 3- t7 u/ L$ _  V4 e1 C9 |: a' ?& G
let sum-time 0
) V* h7 d' N6 r; Y& z4 ]while[i < trade-record-one-len]
  E7 ^# x' i% W( x2 Y6 @' o) o[
1 x: E0 z+ q: B0 @0 b. |$ O9 o  Dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& ^, L% l: u3 ^2 Pset i$ ^6 b5 d* V$ D/ {2 M% Q
( i + 1)
& M' C% q( ~7 N0 x- r+ a) Y, Y
]
5 I& k; p9 o& Z2 ?. n! B, d0 s/ vlet credibility-i-j-l 0
; D$ S- c' l, ^. `: D% t  m. \;;i
评价(jjl的评价)4 O& {" l% A5 P, [9 u- A/ B
let j 3
* n9 Y9 e! k" Z2 z1 H) B# M7 Glet k 4
, K; M: X* S, i; W4 d( Zwhile[j < trade-record-one-len]
3 t1 z+ T$ w) v+ V5 t* V2 T[8 ]8 S* Y! Y" t, [( f
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) `( F) y& D' I  |+ ?" z
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)
. x, E* \5 z% T$ fset j- H/ [- C3 _6 W' ^, D' N8 A
( j + 1)
& G( ?6 e5 S0 G2 H$ [- {! m3 y
]- U$ B: B; M5 J$ h9 v7 ^- _
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 ))
) {# B8 |$ H3 e& S# y
# T( U3 {5 w, `% D2 U+ f
! I6 q+ i! D4 _* I3 A7 ~9 E3 m
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% E' s/ r2 N1 j- G- M% x
;;
及时更新il的评价质量的评价
" j, G  n3 w. R4 w6 {6 tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 w0 j. S, k$ v8 {( x$ B! iset l (l + 1)( m% x3 m  s$ y0 K; F  ?& N  ~6 @
]
5 \& z$ H8 @2 g7 @7 Mend
7 D( J; }9 J. M0 c' ]4 a2 l  r7 ?# g( r6 Y) q
to update-credibility-list
1 T9 v3 c  {4 n+ P/ p3 Ylet i 02 e6 |# D5 K9 q% s% e
while[i < people]
7 {5 R4 \# S6 H: j. q[) }  G% l+ h6 ^# F- ~$ u) E$ s1 b
let j 02 U. T( g' W. G& \/ x
let note 0# V5 L5 T9 q/ {$ w; h* ~, I
let k 0
' _$ w; g  @$ V9 S;;
计作出过评价的邻居节点的数目( P3 v0 O" V8 r; |1 F5 P
while[j < people]
1 ^* g0 J! @# n& T% [& V- W[0 r: _. N+ n! F$ y/ F+ ]3 R3 v
if (item j( [credibility] of turtle (i + 1)) != -1)2 d; ~. b2 f8 [) t! y
;;
判断是否给本turtle的评价质量做出过评价的节点* ^0 e  i2 l& v" A  H2 N
[set note (note + item j ([credibility]of turtle (i + 1)))
- x$ {# N# b& K( ^;;*(exp (-(people - 2)))/(people - 2))]

" ^9 n0 g: J* j6 e. t' `( @set k (k + 1)% |% E# H) ^4 V( L) s
]; t+ E  i( J9 `. T1 P, `4 V) z  k& j
set j (j + 1)
: R: e; T0 q7 K]1 t  b# d; w+ U
set note (note *(exp (- (1 / k)))/ k)) L# }- C/ m4 I- l: P  f
set credibility-list (replace-item i credibility-list note). {& Y/ g: O; o
set i (i + 1)
% ~. V+ g# E- Z  x]- A& |/ |% r: F0 E# c$ |; C- Z
end% P4 K7 z, _9 k$ B( a6 A  ^) F5 {
( O: Z' r- C8 u0 X$ @* h" Z) ^
to update-global-reputation-list
  q( ?5 A# L2 _let j 0% O' @" w( O8 \2 `
while[j < people]1 h* ?  Q2 l1 Q
[2 M9 N( R( }5 C& {7 N
let new 0( _  q. K  _/ [( {: z4 j
;;
暂存新的一个全局声誉
. G! `' n/ c9 Vlet i 0
# e$ C# r* Q* y. @; Y2 O) plet sum-money 0/ I/ a& u2 T8 E) N, D1 ^0 j# a9 ]
let credibility-money 01 c5 o# D: Q  k: y. L! w* x& @
while [i < people]
9 v/ _" e1 C+ k3 l" w% `[
# Y7 ]& |8 Z" h# [. l7 |set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- D; E6 n+ u& s
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 \5 U4 J; `9 Vset i (i + 1)
* \3 v4 i6 o+ h8 k]
) H, b9 A3 }+ P' i/ Klet k 0
& j8 n8 M- T" _) Xlet new1 04 W' S1 Y0 ]( c% \+ ^
while [k < people]7 I8 k0 k/ m/ t6 \9 c
[
1 R9 R, [+ C1 [( Gset 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)& T  n+ |3 [. B
set k (k + 1)
# Q5 ^2 F* c# j% l2 W]
0 E" d6 O# o% aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + d1 f9 }' D& X
set global-reputation-list (replace-item j global-reputation-list new)
- Y) o% R( r9 l& d- W" B' e% ]) Eset j (j + 1)
/ {0 w3 F( Q! Z% G]
. n0 X4 ?/ |$ ]* c, ^end8 |+ C- N5 G( v' [/ l  H6 H7 M0 J
  M2 s5 X. x* d5 X

9 J* `1 j2 f4 A9 ?8 F4 l# F) q
to get-color3 n( h& r; x) [( l  u2 L

  Z/ ~+ y: |1 a. Jset color blue

9 g4 \! E7 P& c. Dend0 ^6 K- `% x% S) l5 @
+ ^9 y4 v: \$ q# h
to poll-class. M* K5 N# l+ ?9 Q
end8 U1 j5 q9 R" n- q% W, C/ u# b

1 v4 M& \! X! b: E5 _( zto setup-plot1
$ d+ a/ g2 ]1 `5 v" |- s. i  M. I5 M( k" `$ @, w
set-current-plot "Trends-of-Local-reputation"
. J+ ~: J$ g/ {

( h* }. Z4 S2 h# [  y) d8 Kset-plot-x-range 0 xmax

4 \, d' A7 E6 x, ]0 d: G& j; \; y$ v8 E, s
set-plot-y-range 0.0 ymax
. q; O. K3 s, |. _5 D# i; t
end. O0 R- r( @7 K6 ]7 m* n# D) \
2 o  U2 d' j# V. f& S% y0 Y
to setup-plot2& W, Z- P- M. x+ o
7 m9 L$ j4 E8 Q3 I% n
set-current-plot "Trends-of-global-reputation"
4 U: d! G& y7 R; a- `& w$ F0 ]

/ g0 v5 h) b$ P) ~% v# m- [set-plot-x-range 0 xmax

& ]2 z- n- x# X2 @9 j  H& J
! g' _4 H) H9 b& h2 ~. e0 Fset-plot-y-range 0.0 ymax
8 X/ a8 P$ i, a3 c+ z
end
$ T! @1 u7 p/ z: I5 U
( ~4 }1 O6 \& Y$ n/ D3 y) H3 Eto setup-plot3- J$ E4 ?9 C% _( s7 [5 M5 m, ]

4 w  j3 ~: ]# q% \% a, Yset-current-plot "Trends-of-credibility"
# @8 @4 Q1 V5 Z1 V6 ~; p0 r4 A

. f8 h( S; A3 |  C6 aset-plot-x-range 0 xmax
5 h4 K" ~" W/ l9 o1 n
8 I' W+ W, B2 Z$ O; f/ Q
set-plot-y-range 0.0 ymax
( w# B: C2 [# k1 [
end* }8 ^8 H5 f6 z/ ~( }% f9 E
) }8 Y1 r! `# ?' o  G
to do-plots0 T5 S9 h) z: y5 f3 d
set-current-plot "Trends-of-Local-reputation"
; f  b- f8 s8 p2 x' F  bset-current-plot-pen "Honest service"
+ |  R% X/ V$ q$ [8 ~end/ b1 q  H" e1 V. Q2 b, [+ |+ p9 n( d
+ l( X% G' f, ^" m
[ 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.% V0 Z- E8 J1 M( S6 L. I2 Q9 d5 s

/ ^! V* C; G# m) v+ t+ @' v2 x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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