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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:. q- `+ e. c( w0 D
to do-business
$ d: {& x4 q. v$ d rt random 360! }' }* u0 d  Y. x
fd 1
' b# L, ]9 G  e/ Z% T, j+ |, g ifelse(other turtles-here != nobody)[" A7 L  S0 P, ?9 l! g  T& d6 m
   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.
* E( H, _9 Y+ P8 q8 X& [   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) z% _& b* W9 X7 W% t* g8 f   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 p7 g) |& `0 P) K; w
   set [trade-record-one-len] of self length [trade-record-one] of self
% ]% E; ?% Q" s" r& R' A3 q   set trade-record-current( list (timer) (random money-upper-limit))
! |# ]! f, u+ I5 Q1 C, u( j
6 J$ `" f' t6 ~2 p9 T% G& ?问题的提示如下:
. v- e3 F5 h3 Y/ X8 j/ Y- J$ ?' _; z0 }4 y# U0 K2 N/ X
error while turtle 50 running OF in procedure DO-BUSINESS& s; G  H4 y8 F* Q
  called by procedure GO9 P, I8 ?  A- w4 O, [
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( j! q5 S' J0 i1 V/ t' j, G
(halted running of go)/ s7 R, q7 ?% W+ x

8 `9 `1 P0 m) j! }0 K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~~2 E- U, T  r/ X% ?& N% Q, 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+ O$ @1 _  a* b
globals[
4 L6 f( N, ^6 ~" h  f6 Yxmax# p; ~; H/ P2 S+ A1 G
ymax
: h5 ~* M+ Y2 M7 fglobal-reputation-list
  A1 U9 Y0 |- p7 A, C& E6 M
- e! n- z$ y9 f;;
每一个turtle的全局声誉都存在此LIST" ]5 M8 @1 H8 `" ?# h. l$ I
credibility-list
  u, w1 F2 |2 y;;
每一个turtle的评价可信度( w! d  f: [/ v1 K7 d8 K! s
honest-service- J( a1 P0 C0 w3 ?/ f
unhonest-service
4 H1 E0 u9 L( A8 ^8 S: |0 ?oscillation) z6 r$ K1 N, o0 G  v6 [7 o1 @2 h
rand-dynamic
- t( z0 `& ^# X0 n]$ w# |+ C1 z3 l7 o7 u0 C

1 w2 K3 x" R3 k/ Kturtles-own[
! r1 K, h5 E5 D% b# c9 J+ Ytrade-record-all3 a% Q6 m6 H6 ?
;;a list of lists,
trade-record-one组成. `) G' T3 }1 C" y  A  e9 _* i
trade-record-one. F4 i" t4 {; c/ D2 ^* V
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 N. b  M9 d6 P! e3 Z& L* E8 M3 P6 c, n3 T/ R. B
;;[
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]]
  t& Q4 |$ S8 ^$ A; `9 C: etrade-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]
! d% S1 T! d+ icredibility-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
! C4 p& G; @0 C+ r0 b6 b5 Yneighbor-total
$ q  _* E9 H3 I; |7 M; z0 o7 ?;;
记录该turtle的邻居节点的数目
0 D- y3 h7 C' w% \trade-time
+ e7 o5 O" W8 ~8 G1 ^& W9 };;
当前发生交易的turtle的交易时间
) F5 x# }1 F" oappraise-give# i0 X/ x# D) V
;;
当前发生交易时给出的评价
4 t/ q+ ]- B* s: g7 s2 t5 bappraise-receive# x, Z4 J! {# X* |" w! ]* y# Z
;;
当前发生交易时收到的评价  b/ o% b6 Q- O2 N6 A" w3 a  C
appraise-time$ u! X1 p7 T9 G3 k% O
;;
当前发生交易时的评价时间, ]/ J" n7 ^& R. }: A$ R0 C
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 T. p+ s# e" w" o' c$ E( ]$ o" l
trade-times-total8 q1 C8 x: P2 d% v6 k$ @
;;
与当前turtle的交易总次数
- L/ H/ {0 c9 ]8 U# G9 Z' X/ ]9 Utrade-money-total
7 F/ I9 b0 m( v( W, ^5 R: v) w4 f;;
与当前turtle的交易总金额- K( r) f2 S" {* N+ n9 Y& A# V
local-reputation$ U; F& h- F& j& D
global-reputation0 ~1 N, J2 Q4 [# m! i9 d1 Q
credibility. ~3 r( F6 P8 q5 e- F
;;
评价可信度,每次交易后都需要更新
& W2 q8 g: S2 }credibility-all
& L$ L4 v. ~: M6 p1 G;;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
4 h3 r+ Q: F1 @# y0 S+ }* ]7 }0 ^
;;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+ g- k: w5 z/ [8 u0 D  E  b
credibility-one
' P9 j7 j; B1 ~+ {0 I: m' B. J# K;;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
4 x' P' L, d" x% y9 f( Dglobal-proportion
5 n3 I# ~( C7 s* N+ ^8 e3 mcustomer
& }1 Y6 b1 o3 D& V; x) I% }) wcustomer-no
4 ?; M. x5 W- W, ?6 Qtrust-ok
. o* l. @# a  e$ @9 U$ Jtrade-record-one-len;;trade-record-one的长度9 d1 z9 h( Y+ Y- _
]
" Y* f* {* P6 K6 E/ f  S: s; [* E' B; \& O
;;setup procedure" R- ]& @7 Z9 a5 v
! W6 @* i# j. S
to setup3 J9 i( `9 J7 i! i: p

# _- w4 y3 L& g& J( U/ _ca

$ r8 Y3 f: O8 P8 a8 Z: h$ o! n2 L. s
initialize-settings
  c/ {: P4 i  E0 l) p. W
! w, ~6 C5 t- L0 E1 F+ H( C$ Z- `
crt people [setup-turtles]
, n2 T9 b( l4 X2 `$ |% [
& ~8 c5 ^. T0 W& Z
reset-timer

- w: E2 E8 x0 U' P0 C- m3 H2 z, U& e' C. F
poll-class

  x3 ^2 B0 X$ Z0 l  b9 \5 F; j& d
8 S) z* N. E0 U* [. W1 fsetup-plots

, |6 O  Y: E4 L+ j2 X( y. g1 B% o  r7 ]; B3 p; B
do-plots
# m& G: J5 P$ c( I: u% T# @
end$ s8 c6 l7 L4 k2 s4 O
* \2 i) g2 q7 _1 G- V$ S- E- n
to initialize-settings4 W9 s8 Z  W5 M9 d; q
- g3 z) O: A* i
set global-reputation-list []
; T5 c5 D4 f# m- I" C4 }9 |# y
8 }' U/ W# w! u  C
set credibility-list n-values people [0.5]
& ?8 _2 m" E9 `- @0 k: E+ |8 i

+ ?2 H0 e1 y' ]% C9 m6 dset honest-service 0
7 ^% w/ F, I; C0 d
+ v+ B" T$ D. q% N' \
set unhonest-service 0
5 ]  a. u5 Z3 _; k5 Y
9 z% y' Z. F" ~" z: n
set oscillation 0

' Y7 B9 N, j- X, i; S2 t
/ P0 k: U$ |  n6 d1 }4 J; uset rand-dynamic 0

( K7 c6 J+ t- K! }( e1 g4 zend
6 [" X) {6 h8 ]& Z* E; n1 q; Y/ S
& X9 M' x5 Y, ]  o$ n) Sto setup-turtles
* a! i2 X. K% t5 Wset shape "person"0 T6 l  E7 J4 ?
setxy random-xcor random-ycor
% N9 M; u& z* M' c7 `) R/ k0 v$ oset trade-record-one []
/ b6 C. @7 S7 S: q4 L" o

. ?+ Y4 J$ d0 p: A* d& `! iset trade-record-all n-values people [(list (? + 1) 0 0)]
  O% T& f+ s( w9 D, p0 p: S: c

  C" ]( @0 \& j: {. `set trade-record-current []
5 x! |. s3 ?6 [' ^set credibility-receive []" w- \, X3 Z# q( @
set local-reputation 0.5
2 I) g# J4 k( n1 }* `% [set neighbor-total 0
) z5 l  M* n% q0 O. Nset trade-times-total 04 a' T# x5 [6 V8 S% Z! e
set trade-money-total 0" o3 w1 H3 v# _/ k/ B4 D7 ^
set customer nobody; G! t4 G4 |/ k3 t* T' W  h
set credibility-all n-values people [creat-credibility]
* I2 d1 S* @+ K7 u  Dset credibility n-values people [-1]
5 h& B' Z0 w2 P- ^5 C& g& Tget-color9 M% Q( K7 d: y

9 I6 T, E, t2 ~' U! F* c+ F7 Bend3 I9 R+ D8 j6 I7 H% v% {6 ?  o, v, T
# M; J9 o" ?1 A4 r
to-report creat-credibility. `; M, i( C; K$ {% Z. w1 p
report n-values people [0.5]- O+ M5 R) p( y
end
+ j3 k# q( I) q- q' e. w3 \+ p9 a; Q4 G
( U3 F# q! o" U0 y% i  i8 kto setup-plots. H4 \0 u+ D2 {; o
) R" C6 v& q, R
set xmax 30

: Y- D& _' O1 P( }8 j3 w0 P6 ]6 T1 W. f# g- e6 H8 X" F! C* e% I
set ymax 1.0

3 f, ?, E3 P* L9 O, y8 d2 r4 o8 I7 o! p9 \& a
clear-all-plots

: @% K2 e: F/ c& `* |& {; g
& _1 x; P) r- Hsetup-plot1

. _; Q- P* f3 b8 ?
8 M% F0 c: U& M  o' Z7 S8 G7 t; Psetup-plot2
1 i% ]3 b& M6 b% v

5 H6 Y% x9 c- R  M. Q" R8 csetup-plot3

8 k) ]+ a: L' ^& V4 P. N+ z0 D* u/ xend
3 i8 ~0 S) e; n# D7 b0 C& v7 `2 t; B4 s4 c5 w' W4 y& |
;;run time procedures
4 @& k9 P5 u/ f# g* E3 K
( t" q$ |4 u( j. e; i) U/ {7 ~! ^3 s; Lto go
( M2 u( H  X( G6 ?" Q9 c: u7 B3 g" W
ask turtles [do-business]
* U  y) e) \$ i+ Z4 N- z) j- M
end
% ?0 x+ ]( W% J* y% d9 O/ U5 Z, c7 {5 o; n  F
to do-business
% s# V% x! B1 U8 V& u: s! K! O
6 j) S3 ~+ b3 }+ B# o6 z) ~

. N8 D! i# G2 w# i% Art random 360
# [# e/ N. @& G  X

! n8 I0 c" G/ x" Rfd 1
6 d/ M8 B* I+ O3 t) j9 \2 f
$ s# y% Z+ \% ?  v" P/ T) {4 j
ifelse(other turtles-here != nobody)[
  x. g% Z" D# N3 [
' v: Q! M* p- K! V
set customer one-of other turtles-here

( I9 u' b4 V5 ]) }
) [1 u/ D! c+ ^  a* L; D  t4 `;; set [customer] of customer myself
+ a, G- X+ t$ r* Y
' I" Z* o+ S' `' G0 H
set [trade-record-one] of self item (([who] of customer) - 1)
  B5 n2 L' X7 f, Y  k9 ^4 |9 `[trade-record-all]of self
, u. n9 D, e$ B6 O7 Z& _0 F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& x! _- \( [% J+ i
; m- t; g. _# r! v7 {7 J
set [trade-record-one] of customer item (([who] of self) - 1)6 P! b- A+ Z2 ?( p3 D$ j" o- r
[trade-record-all]of customer
- J5 i/ c( h. m" Q4 S7 Q" ~

2 ^" ~6 e4 K& C/ A( T$ }% Z5 Xset [trade-record-one-len] of self length [trade-record-one] of self

- G7 }5 A9 g8 R! [, e! \. `& I  q% f6 [
set trade-record-current( list (timer) (random money-upper-limit))
) ?* ^: W/ H7 c+ R) W

4 A3 f* I2 n$ r+ a3 @ask self [do-trust]% a# \+ R$ _4 l1 H' k; ^; {
;;
先求ij的信任度
0 F3 n' Y% t  X: y. O4 d) k* d5 N  D3 u7 [0 I: D: z
if ([trust-ok] of self)9 r$ u+ c  f' d- \) r7 a5 H6 u
;;
根据ij的信任度来决定是否与j进行交易[' A, y5 i* ?; Y* F
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' Z: n7 N9 e% q/ w% l9 y; R# w6 S
[
: b8 A1 L9 P( }
  {. Q( F" }4 q# s0 @0 m$ Z
do-trade

7 v# L4 ~# U6 B% P# C( H% W1 J6 f' v5 s7 F
update-credibility-ijl

7 ~6 M6 H9 l1 {0 e: b" X$ l5 u
7 L9 f2 z0 v+ r: B' k. R0 ~: zupdate-credibility-list* r6 z$ O% A& b

( {2 H# A$ r; o/ t3 l, l5 M( {
update-global-reputation-list

' s) y, b- e6 R" x. ?- a# Y2 I: K9 d" S3 g3 p/ T
poll-class
5 W6 M+ P' n  I% h. W9 U# I4 }* O/ t

8 v+ A  c4 m" M0 o0 j1 sget-color
5 T0 a# |2 s  A5 C# W

% A2 f* ^1 O/ l+ I4 W) S& d]]2 j' e: Y$ }! K: {. f9 P9 x, |

. \7 N: g' M0 i2 j$ z: U& c& };;
如果所得的信任度满足条件,则进行交易
- @+ E6 [4 L& r% l2 Y3 M' w) K
1 G. W5 I# O/ w[
, ^* Y7 u# Z) V6 @

" H' d, C. `5 prt random 360
  Q3 y! t; T3 l& T  S  n5 |7 K! Z
& I0 n7 N' j+ e9 ]
fd 1

5 }9 g  X: i6 J7 `7 x6 s7 W" h9 Q. M7 F* Q
]
& b/ A/ Q8 g1 m4 i* ^; z
! j+ y% J. L% L0 m9 {, m8 U
end
0 I0 ?5 Z& u7 S& R9 \

" x& y0 K: x% l) O! S2 O3 lto do-trust " {* U: B) ^+ [
set trust-ok False
) @) y6 y  r- h; W5 l
5 s/ v* a$ G, X$ V3 h
! M4 L; t0 W4 Q- A" X8 U
let max-trade-times 0
& |0 g9 I8 R- D( F% T7 }' G) ~foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; `. ~8 @& S& X( d; n
let max-trade-money 0
. N7 B" i1 A. ?0 u" Gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ e8 c; C& N) m0 Y# ]4 n4 T2 A2 elet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))0 t# }/ q0 |( E8 N7 X0 d0 g
* g8 j' b# Z' O# X+ j

/ Y5 r4 t2 ]7 z0 H8 y+ S- ~, K$ o5 Rget-global-proportion
& G# d8 J8 w$ ^2 F* dlet trust-value" @! ]3 ^- {% d. i
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)
3 a- s7 T% Z* k+ _9 r. O: a7 A. Z
if(trust-value > trade-trust-value)7 V5 b6 W/ H+ |& \$ i2 p# E
[set trust-ok true]2 U, [  X4 m- Y; D6 t8 m
end" c: O5 G) Y( }/ E1 n9 ?9 }; M

% R1 [7 C8 R$ L( A# o& Y% Dto get-global-proportion
$ f& m4 ]; V- ?1 I! @1 O+ Aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)7 S+ z5 L- n' L9 x; A' o
[set global-proportion 0]
  D1 G( {# c) a' I4 R[let i 0
' W. z4 g# @% J5 k+ elet sum-money 0: r5 X2 E. M  |8 H8 `5 P
while[ i < people]
2 n! q  v, S4 T8 ~[
' F$ C# p! S8 f5 |( ^  \if( length (item i
7 e4 j( O) |5 k$ `& [3 D[trade-record-all] of customer) > 3 )
7 S$ k2 H5 J& Z
[2 m5 @/ @( P. r8 o: y$ f- m+ f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 E) [, {! O- @% W1 X]
3 K4 L& X1 Z2 t% Y]
5 j! c0 c" H+ n$ U1 Plet j 0
6 ?6 K' R7 M* Y0 A0 Jlet note 0+ ]- v# U/ f! M- E
while[ j < people]! M' W$ F" F& b+ P0 C: t
[) W* q" l" y* r* d" `7 _' K. G
if( length (item i( R3 V; R( h) d' T9 y* R& S  {% T4 l
[trade-record-all] of customer) > 3 )
8 ^; H/ ^7 |2 a; x
[
" X" N$ s, A7 Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
1 g2 m8 Q& s& N[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ t+ n$ `# w! g% l7 n; r4 k7 H[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
: P1 A* [: X" X/ A7 U$ f4 ?' k, N! Y]9 E& P: N( j; z7 r
]5 O3 x8 X4 i3 d! [, ]; g
set global-proportion note% W4 s9 s, J" w! s
]. L/ T- E9 k$ U- g" ?
end1 ?8 h9 _, p; P4 A6 P

( \* F  t+ Q% C4 `$ r  vto do-trade  F/ O2 g1 a; j( d4 D1 z! u' \
;;
这个过程实际上是给双方作出评价的过程
/ W0 O+ a$ Y! c+ k* Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( G9 B0 n) u$ ?) O- Y1 ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ ?3 a9 x- t5 u$ `- T
set trade-record-current lput(timer) trade-record-current
: \! d$ W7 ^* T7 l% U;;
评价时间
$ L6 S) c% E& zask myself [
  M  V3 Z1 N, r8 ]2 x) H5 ]update-local-reputation
: x8 R! M& M0 C" e4 `# j) N  iset trade-record-current lput([local-reputation] of myself) trade-record-current
8 Q1 _1 y) p/ j$ B6 E4 K]  i  S+ P9 H; I3 ~7 c- x9 {
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- r3 u) _5 {! T
;;
将此次交易的记录加入到trade-record-one
9 K9 j& s. F2 nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! o5 X8 Z4 e3 S1 `9 Flet note (item 2 trade-record-current )
1 ]3 E% U: H/ Lset trade-record-current) I$ |% G0 t5 e- Z! {  l2 _
(replace-item 2 trade-record-current (item 3 trade-record-current))

$ C7 f  h, ~  e& w. N6 v3 {, s5 Iset trade-record-current
' N% v8 _" G& P3 p6 ~& x9 `$ _(replace-item 3 trade-record-current note)
4 p) g# K+ i# ^2 X: D$ A* y3 s! [8 |. E% t& h* L

6 Z2 [* n0 Q) ?( Uask customer [# p( T1 t: L) d- U7 \6 i0 e7 T
update-local-reputation
: P% V1 ^; O2 D' g5 x( j2 K, Vset trade-record-current
8 V* d+ \. {" B$ g" \& v' ?1 _(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 F& K  T/ q' T/ i]
  q) k' l) [. _$ F8 u) n1 x, a* u2 {  _
- `  L0 I1 G- J, E5 H) }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 j$ V4 [2 q9 p: a* b6 K5 M
" h" ]0 D5 n, m" D& _! ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( ^; C5 Q& z7 \6 r. c& z
;;
将此次交易的记录加入到customertrade-record-all
) n$ j3 u7 x5 m" K$ i. m$ W0 [% tend( [# a) O3 `" y

: b" M& A8 _8 uto update-local-reputation
) S( `5 a6 N0 [% y5 gset [trade-record-one-len] of myself length [trade-record-one] of myself2 Z: t4 F2 y/ d" j' p; g

2 e) W$ y8 E( M+ @, _: @  d3 u$ S; i6 X3 k$ X  R; y
;;if [trade-record-one-len] of myself > 3
" c! e; j% M# b/ X# v
update-neighbor-total
/ h# N: Q& q1 }+ ?;;
更新邻居节点的数目,在此进行& c* u5 W4 U: H- Z2 \, }
let i 3. Q" z7 Y: p$ b* h1 k( W
let sum-time 0
% T3 F% `1 r4 q* Rwhile[i < [trade-record-one-len] of myself]
8 }5 t: x( r+ z6 V; g[
* X7 E; z3 ^- j) q& t" ]set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( w& d" e: g, \set i
7 ^1 `: j5 p& R) A- g& @( i + 1)

: V' ]  S/ j$ ^$ f- f]3 G4 C! y8 d* _6 Z! K8 i
let j 3
. i# U1 _; g6 ]! o+ e, Xlet sum-money 00 V8 A1 J4 h; f1 O0 J1 w" Y/ k
while[j < [trade-record-one-len] of myself]
7 D+ B3 G* k: y[
8 Y9 X' J! U- ^( Jset 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 B$ F( h& N- J
set j/ }. |4 o. e3 [' ]5 ]/ A6 _" }; h
( j + 1)
. w) g- s/ y) S
]# k5 M  T. k2 D8 g# ^
let k 3$ Q0 V# m0 y0 f/ r7 G" o& I  ^
let power 0" V; @3 U/ u$ I# G4 E- ^
let local 0
% U+ m/ ]& K, n; I9 }while [k <[trade-record-one-len] of myself]7 ]2 w& B! a$ G6 k2 f, a6 V
[
: v" _  J" M- @9 T0 L# Aset 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)
% |0 p+ |, v+ c. m2 Fset k (k + 1)- B$ _3 I. a# X2 }) [5 N! [- X
]  X7 N5 ^& G+ }; [9 ~0 R
set [local-reputation] of myself (local)5 f, g. A, m7 @) X$ V3 a
end* ~5 O" E3 k3 Z; h. l) V7 X% d
9 v$ b! Y  o- \4 q
to update-neighbor-total  Q3 n$ _5 Z# V2 a6 Y2 T

; ^3 I, {1 V" v6 i5 z/ sif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' G% b* `* T4 G( ?$ i4 o! u6 }

& h$ j- Y  m$ ^, g* O

2 B# U3 C* V- g' d) eend" J, z' `% w* i8 W- q* B7 N! \
" v9 o  D; B. N8 h
to update-credibility-ijl - L, E4 v! O3 j0 c( H
3 u! K6 o, o+ ^( J. c
;;
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。
% r: X; d* U2 }let l 0
7 s/ ^' l7 X' d7 J, x' b4 Z* mwhile[ l < people ]
3 W! P7 `# J* o- S;;
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$ g' |& {& x6 f. L' K+ Y3 S
[- m2 S, |, e. e# `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 z1 q; a7 L/ s
if (trade-record-one-j-l-len > 3)8 Y' c1 @3 S- S3 U7 ]
[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. a& Z! d9 u* e* ?9 x2 ~2 L7 g
let i 3& _2 B/ Z. h% _1 y
let sum-time 0
) _" {( B- a2 X6 R. r" awhile[i < trade-record-one-len]
* @0 `( ^# b4 z- R[
7 s" R3 q+ B* v" g: J% Uset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
- S9 ~3 X6 m4 b* [1 nset i
# t4 [8 `/ K3 C; X( i + 1)

* i4 s9 g7 n# q, r% s]
  P: m: I9 R0 U+ Xlet credibility-i-j-l 03 ]6 O5 b" A2 n: C
;;i
评价(jjl的评价)6 ?5 C2 ]7 X% {2 I& y: [9 ^$ N
let j 3. n! f. y' R: }
let k 4
3 S1 p4 {7 m  Uwhile[j < trade-record-one-len]: d, u1 `, l- m5 c1 |
[
$ V3 B: A8 j( x# D- I; uwhile [((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 {# q( r7 i, C2 R; W9 y# K/ c6 c: O2 r
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)
( q5 }1 y. S% L5 m6 }* {+ B9 [set j& U. |/ e2 A- ]% `+ p' A" _
( j + 1)
  ~% A+ ]& U7 W2 X! |
]8 |; X5 _( C0 O& ]0 b5 s/ b
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 ))9 d" Y' F4 x8 I* s  r4 I
: T9 I, Q" F* ~; {3 x1 y
0 a0 g& f( E4 J, O0 D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))# Y# T1 H2 s. J3 J0 M; [8 I* R$ v
;;
及时更新il的评价质量的评价$ {0 X: U! N' r& h! F4 ~5 b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 Y+ l/ {0 w6 [# K) m+ J; u% k
set l (l + 1)
& e0 U3 |! r0 T# D9 J]& D2 m5 r* n' U* w
end( W6 U& ~, |( V3 x8 G0 _

1 I+ F) P* h* Eto update-credibility-list
+ W/ ?- c7 W3 f+ |$ F9 dlet i 09 m6 b6 j3 O& m
while[i < people]
, v2 s4 w  f5 j5 `: R2 G$ u, [[
( i( G8 ?9 {) _6 G  K& f# G3 vlet j 0+ I5 X  [( D8 q6 v* I% |6 C
let note 0
5 Q$ q8 i  C9 c' {3 W" t$ Slet k 0
' l/ E% q4 w/ v- M8 I) _. J7 o. @;;
计作出过评价的邻居节点的数目
- l! d6 M$ Y8 I- d, ywhile[j < people]! C2 _; {8 B+ S, {
[  ]3 R2 h; Q+ w- t6 a9 A) Y
if (item j( [credibility] of turtle (i + 1)) != -1)
) o) [! a7 r# B$ n4 u;;
判断是否给本turtle的评价质量做出过评价的节点
6 B) i6 q& s& d6 G$ {3 d[set note (note + item j ([credibility]of turtle (i + 1)))1 J/ s1 B. S: [+ O0 s; j: a: |
;;*(exp (-(people - 2)))/(people - 2))]

! g4 q; ]+ ~' b/ ~set k (k + 1)* o& W% `) q4 S) [
]) p9 O. b! p' B8 ^# r+ Y
set j (j + 1)
6 i" D. i; q5 t& B7 Z+ y2 F: J: T]
$ L9 W" k; f. M& [, Zset note (note *(exp (- (1 / k)))/ k)0 S! G+ I2 H# Z) y( N+ K
set credibility-list (replace-item i credibility-list note)
- y% a: i+ F: q1 N5 }1 Uset i (i + 1)& z9 s, c! @8 n  {
]
; s. d6 q5 O' K6 M0 s3 j; O6 G& {end/ x+ w, L1 p: h! ?0 z1 R* k; }
( S- \: b! r- m6 Z# R
to update-global-reputation-list7 H7 C/ \+ ^/ o1 i* |5 v! V
let j 00 J$ ?% H# I) Y6 D9 n
while[j < people]
6 t, W( i3 t& V% s$ [/ Z[
. \, u- ^$ m0 _4 a7 B# B! mlet new 0
& E3 ~- A5 ?+ O;;
暂存新的一个全局声誉
$ T/ d5 r* M) `2 Q7 z" h% klet i 0
1 S' Z. B1 W+ ~4 E. flet sum-money 0
5 G7 I7 V- p1 g* K5 \; t  `let credibility-money 0* v2 c& Q8 [/ ^" O. s2 g3 J
while [i < people]4 \0 f. x, y5 y3 T+ E  Y! b
[& u8 U; s) B/ X9 \4 {& U" H
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))8 H! J" D$ a5 }2 ^5 x# G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# X; Z" |! e! Z3 X
set i (i + 1)
9 Q- r( J# \  u- X]
% M% v2 z! O. e$ |let k 0
* k3 M5 v2 B5 y7 O( N) K8 Nlet new1 0
* Z+ Z% F4 L8 m3 Y. Wwhile [k < people]
# K  l3 S& o! N  }. `[
, s5 [9 r2 e' I7 ?8 Wset 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)
! Q- A3 \  v" p$ Sset k (k + 1)
6 X9 d* z% Y1 H  ~( h* o]
, S# A3 d0 o; s3 U  ]7 bset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( U7 m# A9 v; t3 ]set global-reputation-list (replace-item j global-reputation-list new)
4 U1 s+ f# l$ e, |1 [set j (j + 1)
' y$ G9 K/ m3 Y2 k8 G8 _& K* u: f) X]( ^( E( k9 n! I% h) s, C, s1 n
end
8 v- M; U' d0 ^2 J0 @; U! I7 N2 ]5 `6 R7 T
6 W( j9 |# J: s; A9 u2 |& o
& `: `3 A' W6 F
to get-color
$ a: X2 E) W' Q! E6 Z" V6 j7 p# M
8 i5 y1 V( ^, @# I+ g8 g- Lset color blue

4 T0 |! L% [6 r2 ]end
% t  s5 P- x! q9 v, M6 z7 f/ j1 n$ R) k$ j) l. I2 ~6 ~
to poll-class
/ i9 N* j: `$ Wend+ t) g& B1 s- f+ k3 g: I. {5 m

( f  N" J8 _0 I3 x2 [0 sto setup-plot1
: N; c4 \2 @: g9 O
3 w- I2 M' @# i1 Y( \set-current-plot "Trends-of-Local-reputation"

0 G% U, I  h* t- f5 g( |) P# K+ O5 s5 `. o2 ~# c
set-plot-x-range 0 xmax
9 q9 }  L5 N, e0 T$ B$ b
3 A! e" z  M) Z! f. K
set-plot-y-range 0.0 ymax

- ~! u2 L) z: o5 iend
9 q/ u; H+ _/ |
- Y: O5 m$ m  W& ]" w6 zto setup-plot2
( [* d9 o! L# n9 F. U
9 d# j  n: q6 H8 o, a* d3 \5 zset-current-plot "Trends-of-global-reputation"

7 |7 R; b+ J0 \& f) ~+ `
4 e' k! ~6 c- H) C, x/ v* n) n* Z. e5 Iset-plot-x-range 0 xmax
* y; F( _% P. j7 H# M- B, D

% D, h  G4 U0 C' cset-plot-y-range 0.0 ymax
* i  J* V1 O* r0 O
end2 |0 ~2 u/ r0 R3 V2 ~

/ r( }6 g* ?# Y. h5 S2 Yto setup-plot3
& g7 k9 j* D/ I/ q0 q" a- N7 U/ H! }0 h4 R& o; u2 u1 Q1 x8 n5 B
set-current-plot "Trends-of-credibility"
, ], o1 N  p3 `! k# w0 K: Z
0 k. p  ?/ n& s+ d) j6 X
set-plot-x-range 0 xmax

0 l& E& ^+ z/ o+ R
7 W' L: S4 U' d  H: d* n8 u4 k# q8 Nset-plot-y-range 0.0 ymax

* a4 H& c. M( ~+ W7 X( V6 q! u6 Uend
5 h9 o2 I* [/ t+ b
. t2 e% I" M- d% b7 Ato do-plots7 N# c# V, [( v0 @) d  ~
set-current-plot "Trends-of-Local-reputation"
+ T" S; J5 d* i! ?: H* u& sset-current-plot-pen "Honest service"
8 D4 e+ Y3 G3 Q9 Xend
1 Y7 l) o1 z+ \
( V5 X2 c& x5 u' j[ 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.- O7 j' q' h5 u5 {" P
/ T- ?7 B6 ^4 [  y
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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