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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:
$ Y) t; L: T" U5 o: |to do-business
1 x5 i! u7 D' Y% y8 M  H rt random 3605 g5 |1 l3 L1 G5 a
fd 1
5 ^, D( p3 w4 ^9 F; _ ifelse(other turtles-here != nobody)[
) @7 ]7 f. a$ y& f! h   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.
# u( k! J* J' c' \. j1 T   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; D# ?6 g4 I" R3 d. V$ @! n2 M
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 \' x  A* h* N% i8 _# k   set [trade-record-one-len] of self length [trade-record-one] of self) k; z, w0 ^3 B4 D
   set trade-record-current( list (timer) (random money-upper-limit))
8 `) s) Z: t/ `4 H( b8 b4 b2 O" ~$ d) d9 b; Z! b
问题的提示如下:& [5 t( K6 }2 `$ V' N  _/ G
, |( }1 {9 B% Y  t0 V
error while turtle 50 running OF in procedure DO-BUSINESS2 b& X6 Y" K) ~5 W! i# P
  called by procedure GO! N" N: J" n* R9 g* Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
) V0 I, F/ v9 L  y# U
(halted running of go)' Y, ?! \9 F' e1 z, I/ A
+ u  z% n7 a5 z% m. H9 N
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~~+ H9 X: Q' p4 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
" F$ ]3 O& q6 B) V' e9 w1 vglobals[* f1 [; Q/ V* j  k) S
xmax3 O% j, y% D  c0 i8 D
ymax
$ t% W7 N- R, M9 n: L& X7 ~( cglobal-reputation-list
# k1 x9 z  p9 g& k. f4 c5 l3 y. c8 \: l+ a( ]7 A
;;
每一个turtle的全局声誉都存在此LIST* n8 a+ C9 M# J8 F
credibility-list
/ k$ y; A9 w8 x/ e) l7 M$ i;;
每一个turtle的评价可信度
+ s; Z0 E5 \: p3 J) Y" E, f% ]honest-service9 K$ O! h1 Q* N3 s% ?
unhonest-service0 H5 R7 |$ N0 w! h4 S& Q
oscillation3 \4 W( f* [. R% c  s) K2 E
rand-dynamic
/ n5 |- O. `8 I+ W+ |; U  P7 g, \]6 J% g, F9 j1 k+ N0 |- Z* p
1 m0 y: C6 |: J6 `
turtles-own[5 }+ H+ H" ]2 V$ [. E4 H5 t: m
trade-record-all  Y# h- s) ?2 `- d3 T! X+ t  h
;;a list of lists,
trade-record-one组成& Q, r2 M7 @8 I# A1 N
trade-record-one5 ]7 ?) O1 B' P" M( J8 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
$ D) x+ D* w3 ]& E: }$ c
0 p" U/ V6 ?( F' X, a( R8 I: B% O;;[
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]]
$ _( Q9 v& o! }0 Vtrade-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]
) ?, S  ?+ U4 T7 S! s8 X/ ?) Wcredibility-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
) \9 e6 N+ o" s2 M. l$ x1 {neighbor-total
5 S8 {' c$ W- E+ l) P; u+ P" [;;
记录该turtle的邻居节点的数目
9 G7 P! g# _- y# h4 r/ e) r0 Htrade-time
( L3 `9 s" f& |5 q" @9 f2 y;;
当前发生交易的turtle的交易时间) h& O! e- w, E0 O. y
appraise-give/ [# e7 u' I7 a8 D1 a
;;
当前发生交易时给出的评价0 a$ ?* R1 R* x4 p4 |9 m; h' B( W( a" r
appraise-receive
5 S1 Z; P$ G2 r) t+ f# D) k;;
当前发生交易时收到的评价
8 d+ J& w, p) K9 K7 g2 |appraise-time1 z- H: x0 p% [4 A
;;
当前发生交易时的评价时间
. Z6 T" n6 O) k0 T  T4 Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 R* y) B" x) ?3 J3 S$ o6 ctrade-times-total/ m' F$ N( Q. K! g% `
;;
与当前turtle的交易总次数( _# u% G5 a  R; H( y
trade-money-total
4 I5 O& C$ k/ {3 \: r- N$ w;;
与当前turtle的交易总金额1 m( Z4 n7 k8 w1 d4 _' {
local-reputation
# N1 j: s) \( n$ z( Nglobal-reputation  Y9 S$ ^6 C5 u5 p2 x0 ~, @
credibility
# }$ ]  n: y2 p/ K5 u- [;;
评价可信度,每次交易后都需要更新6 C) `9 R% [- t( F& [) f
credibility-all4 K& a6 p# w# w
;;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
' a0 N( N; T/ l; x0 A) I- S# }4 _( V; g, D, g7 X5 K) M; n
;;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, Q* P4 f3 m7 E% g; r' i
credibility-one
- M) y! e4 D1 v: ^8 e" ^6 b;;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
8 Y- N' [+ T+ Z( U. i8 m! cglobal-proportion0 t$ w0 |# v0 P/ W# z1 [
customer5 J( q# j2 B: X3 K/ |: R
customer-no! @( H& `' P# ~9 w
trust-ok
) v2 ~; T- ^% Ttrade-record-one-len;;trade-record-one的长度
% _  m8 @6 R! }' q]
, M0 l7 F1 U- m3 ]$ T5 ^( P
2 t; H! e/ V$ L. {/ p* i;;setup procedure2 P1 t  o- K8 [! O0 }9 G
& F7 i6 _5 w6 A' j4 o
to setup6 |% b1 h5 j# ?7 c) }

. [  }* K+ h/ j; {/ B9 E* M$ x7 ica
8 v- ~! Z! {9 ~9 f
% M4 t6 ^& j4 v* s- H, _5 W
initialize-settings
# q% e, Q; T, j. g' @0 R
1 u" x3 i$ @8 P! W
crt people [setup-turtles]

- e, J" [' U! t. |# r5 S" A9 m! U# b- _  q+ _
reset-timer

' Q! h' v6 y" {! a9 k- {- X9 w+ t. B) I1 ?2 e
poll-class
: x, k5 w4 t% W2 K

/ |  c0 I9 s+ f% h' u6 V; G. f: C1 psetup-plots

& Q; U( I2 R! ]" J, U9 W9 P# D( U# x# k( q4 d$ f/ Y( a8 `
do-plots

. `  }2 w* W0 F1 l& d& z- ]end8 h2 _& @5 X* x% v7 O7 D/ F
1 E; m3 _3 n; B0 {
to initialize-settings
! b+ t, f, o0 n8 O7 B
( l# @$ @, w9 \. y, tset global-reputation-list []
+ i6 p. b) k; W2 O% L

4 F/ _3 T( E- m+ W2 p; X3 Jset credibility-list n-values people [0.5]
. ^& W3 X; t( v4 b& e

% n' d5 |0 B9 Z* n$ z# q8 u9 l" }- uset honest-service 0

4 K$ ?0 V9 R. X0 _3 s* g: J# j( w
. Y$ g, x* K; S% u( Qset unhonest-service 0
- m9 D9 t) z5 H4 M
! d+ l( `1 b" I8 ~! [* C3 ?
set oscillation 0

. D. Q: R7 \, m) V4 E# w5 P5 ?! U8 L" ?3 J
set rand-dynamic 0
+ y' y+ B5 o; ?) c2 ]" x
end
% W( D5 l4 n: i9 |& e( g4 V+ Y5 I- T6 }& ~* c6 \7 z0 ^, B
to setup-turtles
9 ~- w) Z0 |5 ]! K5 Wset shape "person"
. a; M$ y" V# |setxy random-xcor random-ycor
3 V; N" G  w) m3 d' `! O1 g) Gset trade-record-one []' E. N1 }4 @$ ~
. L  L! i. F/ v! C: C+ X  J
set trade-record-all n-values people [(list (? + 1) 0 0)] " E5 \2 l* i' `& G* K, K  Y
) O9 m2 e5 Z9 {
set trade-record-current []6 ^- x& k6 _  N$ }! f
set credibility-receive []
. P2 m& _; b/ }5 r+ z/ Pset local-reputation 0.5
. i" F6 L4 R: R" j, Eset neighbor-total 0
& e1 c% ]8 b& Q" g7 rset trade-times-total 0. c6 w7 {) X. N$ a( Q' r/ ]$ B
set trade-money-total 0. B& A# y9 p2 T) ^  P
set customer nobody
; `  T$ M/ ~6 f8 U8 B! \set credibility-all n-values people [creat-credibility]
, j5 q/ w* r: S4 w/ @2 a1 Cset credibility n-values people [-1]9 W+ @5 o2 F! C& }
get-color* i2 e& F, \" q* h: [+ M4 u

0 w; |# ~9 s( D1 e+ f1 mend; R* z! ~, @0 s. u; c, @7 K

! @5 a: N1 D1 t, t8 Qto-report creat-credibility# b7 _( z- Q; a8 @- G1 u
report n-values people [0.5]
8 Q, t: U8 W* x1 o2 {end
; h. k) [( Q$ p9 Q4 `. ]( I0 U" n: k2 v* h, d* r8 [
to setup-plots3 N8 H1 |7 L' t0 r

4 o8 F0 z9 j2 J8 j% [1 m( Pset xmax 30

- x; [7 o! U0 k5 y2 q8 ]5 I, m3 ~6 K; ^6 i
set ymax 1.0

2 @, n. z/ N; R# j2 R9 x) s, a$ F. t! _! Z, i
clear-all-plots

  V: ~; J* g( d6 r2 i
3 z- L1 A0 e( a: Y  rsetup-plot1
0 \: g8 h; |; X1 b3 f# D6 [

" ]+ ~: x& G- `" U9 b9 Psetup-plot2

2 z/ z; P2 C& Q- Y9 M
4 N- M6 n  K  v, y4 p- ]setup-plot3

4 C& w$ h- K* @. w! ?end
) a" U/ g6 O. ^) m% V/ H' X4 d. t( X& S" s/ w! w
;;run time procedures% Z' C0 E5 _' U' x4 \! E( Q' c

+ Q" X: {5 J0 O  S3 oto go1 w0 H, E& j, E# n+ `4 t
& ~/ U+ Y, Y; y  I8 l1 |
ask turtles [do-business]

- e; U, I) [6 x+ V8 y1 v9 B& Hend, B# o/ V' ]1 Y' S& Q' e

+ Z/ X, h: J( @( f; Hto do-business * L4 a' d6 ]1 q) A% Y. I
1 m) y! F" }- B& r* ?9 u
, [: x0 W5 a6 n5 i3 z" [
rt random 360

- G" s; q) m# t) x' u6 n
5 Y1 Y+ E2 b9 T0 z! \fd 1

) v3 @* K6 r1 L5 b
; ^9 ~$ V( G4 @4 pifelse(other turtles-here != nobody)[
! p1 f! \; U4 B

8 d( |! b; M- n5 I" D. |" jset customer one-of other turtles-here
; t3 j$ n2 n  Z
) O8 p+ Y. J( S& g
;; set [customer] of customer myself

" X( D+ c; I& r  l( [# }  q% E( T
# G! i& U$ w2 {: a7 R8 eset [trade-record-one] of self item (([who] of customer) - 1)
# D% P# ^5 r* U0 m- y4 E+ m) r[trade-record-all]of self
/ `3 _& u# J8 e8 t) J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 U- _- m( ^/ u, ^. ]- B# Q' t4 ^) N
set [trade-record-one] of customer item (([who] of self) - 1)
: s0 m4 C* [( w5 [$ Z- {[trade-record-all]of customer

; l. L* S0 R6 O" p: u: A
+ H6 k( f! k# D; d  @set [trade-record-one-len] of self length [trade-record-one] of self
) a; e# X: D: l* G1 ]

& ^% i7 r8 F3 z9 ~set trade-record-current( list (timer) (random money-upper-limit))
# f+ S# G$ a- w6 P2 Q
/ _* V+ p# j, T, v# P; M& X
ask self [do-trust]
2 R0 s7 ~8 |/ |; T;;
先求ij的信任度1 h! p- l- p2 X; ?5 Q

; k& {. u, F5 Pif ([trust-ok] of self)  \3 Q$ j$ n7 B. u
;;
根据ij的信任度来决定是否与j进行交易[- H! e# h6 p% w
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& [# g6 p1 [* \

3 x3 `2 w* L: \6 k% t4 q+ s3 Y7 X[

2 B6 t2 V* }# S1 G  R' s1 ^9 |
& Z3 H' J0 U, ]do-trade
6 X& @# T$ Q3 P/ p4 N
6 Q- I$ h6 F- X' ^* S" K
update-credibility-ijl
5 R' j/ t+ w4 L* d9 l; F1 k' O0 E  n

2 `9 v$ c/ c4 |3 W* u7 bupdate-credibility-list/ [" s3 R2 a$ _1 L
# ^" u7 e) q; c& l9 y
) I8 H" i! h* A5 P" A, K+ q$ d% k
update-global-reputation-list

7 D: F. @# j) G0 a5 s  K
  M: M" B4 k6 ]7 z$ Tpoll-class

* R% s( g* d1 D; o* o4 d! g, H" Z) F" J- q. K0 I# p
get-color

1 Q% K, \6 S% p
; _6 P, Q4 T# F% y]]
* m& e* f; S$ ]! L/ m- |4 |6 A* Q% k1 D
;;
如果所得的信任度满足条件,则进行交易8 ~, ^& ?4 Y! e1 n: Z
9 |9 {0 W- _1 f) G" s0 {
[

9 i+ b$ j" A6 @3 z+ j2 i2 q) @! ?5 w9 K& V5 {8 E& a/ L, S+ `9 m
rt random 360

$ a# Q2 }( X1 T+ R' e# h0 F  F, ^* T; E+ d  L2 `* y( w
fd 1

' b( n6 W1 K! |
: P; O* m  s8 a* v  Q0 a]

+ F. }( z5 n" i3 m& s& ?( U( W6 |9 @- a
end

6 }2 g5 B4 P8 y9 }/ {! c
+ R0 q: [9 D0 _, W4 O4 kto do-trust . T. |* g( e% Y1 d
set trust-ok False
1 o3 I2 K5 K2 B7 j7 I# j* `
9 @1 L' [/ i; H6 }
4 ?! g& S; n* y0 A$ X4 q4 a" I
let max-trade-times 0, ^3 p( p* C4 ?; C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 l2 |# `( b1 r, K4 d2 Q! klet max-trade-money 0
, G; ]0 H" ]4 Q% b2 w% M/ q" oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. V" O& H& N" B1 G+ d
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# W1 ?/ f5 ?5 a! |. W% I9 k' i0 i9 A
# I1 O6 W) L/ [. I# W1 C6 Z
2 Y1 Z2 ?( a& {, Z
get-global-proportion
  U/ s  [( S& p' Xlet trust-value
3 }  _" A- B" \  K% b- Jlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

6 z8 D0 I6 U# c3 N/ I/ e; ?# N, J! Gif(trust-value > trade-trust-value)
0 |9 ~, P3 z8 y# _" m2 f[set trust-ok true]7 p  N9 r$ c4 g- z& e9 c
end% R* b4 C9 [& [% O

4 t; w2 f9 k; x/ ito get-global-proportion
2 G8 T' r% f7 _; E. W) \- Bifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- ^+ b1 q. j& W! z* l
[set global-proportion 0]$ [& m, D0 {, w# J2 R: o6 i: Q9 p
[let i 0
  e6 N# E& N% b4 U* g) ^% [let sum-money 0# _) \# w$ h* T' r
while[ i < people]
* t4 x+ v, o# z7 ?' Z[
( l6 [& z9 ^- j+ q) b) c$ J# a1 wif( length (item i
" d/ U' \* h7 y6 e0 ^[trade-record-all] of customer) > 3 )

% B7 N( i8 b$ t3 W+ p& n- y[
, Z. t, k" S& G; d+ Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself)). ~" s9 o- K& w$ M, J  S! ]
]+ P) a: ~- L8 F1 N9 }5 s' `" s
]$ w, Y( B6 h: @' b- x6 z
let j 0
# {3 ~% R' i- ^1 ^let note 0
7 S; M$ z4 {# g% I" t+ K4 Twhile[ j < people]6 c, Z9 {* \1 _  L6 f
[
  [' v! G8 @! i2 G6 x8 eif( length (item i$ j$ F9 E* b+ p9 j4 r: A3 s
[trade-record-all] of customer) > 3 )

4 e, B; R7 ^( a4 B[
# o. I8 `3 i/ `) W9 Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  R. `! b) L3 z( q* K0 |[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; u/ L, d) z; ]
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], `/ I+ p4 p2 J0 M8 I3 [" g
]
  @" v3 [* ?: `]
. u- [' p- ], \+ H$ X% O9 Y# |8 @set global-proportion note
+ t" Y6 o; y' z$ N$ I6 E3 V]3 E# a: X. k, z
end- s7 b! @4 a+ o0 X/ T4 |2 f

9 |$ z/ w) j2 l4 @: B" S3 T- O7 |to do-trade
  m8 ~7 d3 T, H+ U$ r% U2 F;;
这个过程实际上是给双方作出评价的过程
; r1 f0 m, x( Y8 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( ?* @# i# T% j; S3 W2 e' Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 P8 r3 S% X4 e+ W! Wset trade-record-current lput(timer) trade-record-current
7 f. u- D7 n7 ^$ w;;
评价时间! }) H& x, L" m  p6 o' s( v' R: t. {
ask myself [# A( T' O9 P  m2 S, B+ F
update-local-reputation% R9 m" x8 }* b2 r* F+ Q4 p4 q
set trade-record-current lput([local-reputation] of myself) trade-record-current
& i$ B- h( I' N% K. o]& N. N$ Y/ K8 r% Y1 ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, C  Q/ O3 M  Q* c+ [* n: g& m1 k
;;
将此次交易的记录加入到trade-record-one
1 k: y* c3 P6 E4 q: I. vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" e& y( ]4 n2 v  P$ V
let note (item 2 trade-record-current )
, _) m3 i: |( v1 Z8 Cset trade-record-current
+ }9 B3 V' U, l8 X! g) P% U(replace-item 2 trade-record-current (item 3 trade-record-current))

7 Y7 V/ l) g7 G, c2 |& z) r7 Gset trade-record-current+ X  n! D+ ?- v9 D/ s# ~/ k
(replace-item 3 trade-record-current note)8 |9 F2 C: `) N+ U* G' m3 J
1 W4 m+ V# h- |9 ?" ?; k
; ]' h- F+ C  D% H- u' b4 I
ask customer [
1 Z1 t3 ?( h# @! ^6 U1 iupdate-local-reputation
5 ]2 x" P# l* C7 M4 n% s: `set trade-record-current! ?$ j3 B0 ~7 ~/ ?8 a( N
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 @9 T9 G& F4 S3 z* @]
1 ^4 V5 K% V: n- P/ \4 C, ]8 l0 @
+ ]6 j6 m& a; P# s
. B- a  l* u6 L: B
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! v, V+ T7 s# @5 _! v2 H' I  O
( m0 p; E' K8 X/ f: k* u& l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 Z" `; q1 l  c  d7 O8 P) d8 L' x# q
;;
将此次交易的记录加入到customertrade-record-all  N) H1 s6 K! D9 `6 c
end7 z8 `: o! |: K# z( f

7 a6 {" `7 q6 T3 bto update-local-reputation. q; E' j4 W( u0 P: \
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 S' ~5 I& i! M, u+ c, ?! z( v( y
( E$ b% y8 b8 g* }# w+ J* a  X* i) Y* T$ P, P& D( M/ ~* }
;;if [trade-record-one-len] of myself > 3

/ A. r8 i1 ^+ Nupdate-neighbor-total- A5 O; ^- ]/ Q# \* P: T
;;
更新邻居节点的数目,在此进行
! P$ T3 J, I& v& w" p4 X% x( E$ Olet i 3+ o( O0 h3 o1 ]" D; K
let sum-time 0, T6 _& ]8 W) t- I0 @; A; Y" ?
while[i < [trade-record-one-len] of myself]# G6 u3 t: O4 y  {* o
[, @" S) w# a! K) t
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  C- \: N" p; w- Eset i7 k$ U8 h9 G5 D! ]- _
( i + 1)

( I: [/ z2 o! Y4 K]
" ~: P: s0 a+ q6 M  glet j 38 y% t' _' Q+ K
let sum-money 0- t1 V4 A) S) C$ ^) m. }  H
while[j < [trade-record-one-len] of myself]
- f& @" R$ v, c4 S: G8 X5 V' R, P/ d[
! w5 v- R* J3 r2 i/ n" [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)1 m* ^1 k) w8 j1 C8 \+ \/ c3 h9 B
set j( K- t! J: f0 Y. y+ P6 c
( j + 1)
/ S" c8 I! Z6 O) z3 O2 g  |2 S
]! @* F2 w5 @- v8 W1 y4 {" Y1 J0 y
let k 3
; k$ B: s/ I  h6 d2 H9 d, }let power 0% o, \$ u* ~! O1 p  p1 z3 j) I
let local 0
* r* c! p, z0 l2 H% Z- swhile [k <[trade-record-one-len] of myself]' i4 u4 i/ R9 {7 p
[
) Z3 Y# H5 E5 Y8 ~. qset 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)
& S" Y. c4 r( y$ Q' O) gset k (k + 1)
$ q6 r( W* a8 j" f7 M" Y]
# q: E' l2 I4 V: J6 K' Zset [local-reputation] of myself (local)
  n' o7 C' x; o7 dend7 O0 \3 A+ {7 K: R9 z

5 N6 ?$ n2 w( xto update-neighbor-total2 v' z! z, h! I7 ^1 G: C! W

6 p  f) u1 f0 u" p. gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 L4 e& A* V; Q9 @9 z6 }% E- j- S# z8 _! i4 R- ?( k7 I
9 Y; v0 ]% N! _9 d
end
; Y/ J; d8 r0 c& z$ v; H6 e: P, z$ L2 |* V4 o! j% V
to update-credibility-ijl
: h. O" T9 s7 t( X' g: R; c4 n9 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。4 l# ^- z" }0 J" ?* C  W2 ]
let l 0: p  g- i8 @' f" B
while[ l < people ]0 _% Z4 u5 c. G! 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
! _8 d' I" h9 x. G5 ]( d- y% m[0 b3 w' n$ E3 T* K
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# ~( O+ ^! X5 C# k: u2 iif (trade-record-one-j-l-len > 3)
1 J. y0 ?; ~, m# r& n7 ~: Y. {( X[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-one9 n; R8 D! q8 s; v
let i 3
: e3 \# F! J+ plet sum-time 0* }& q  P) F# D  j
while[i < trade-record-one-len]5 H4 i2 C9 a% \+ T
[
1 k$ ]5 ~+ V& {, Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
" D( G5 a! X' Y% b$ C+ ^set i
0 L6 W5 B# o8 q( i + 1)

/ Q% G  T, P( w* m/ {]. }; A! j( m) z$ z
let credibility-i-j-l 03 @/ d: ~6 k( K/ u- m5 E0 T; k6 h* z
;;i
评价(jjl的评价)
) v9 x8 s+ C$ }9 Vlet j 3
, Z; j! v/ t/ t, V8 wlet k 4/ a$ Q4 H: i/ y) ~
while[j < trade-record-one-len]9 i5 B: T& r. K, c
[
! B% k( e* c: V7 B: `/ Iwhile [((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
  b# i1 S6 H* u" p' pset 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)
- q1 }1 f2 n1 n& Qset j4 M9 Q; h& z+ E7 S: p$ E! S) ]
( j + 1)
9 Z8 C1 ^, f  U9 }# h
]
% ?- [; z8 m4 C: s' u7 N! Oset [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 ))4 ~, y' [5 C! }+ K: `% n

0 _* [# E/ c+ e! i6 [
% e/ O# ?8 x4 d! J8 V$ j. i( y9 r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 `+ U9 N7 M0 |8 }  x+ s2 N
;;
及时更新il的评价质量的评价
% H" b+ r2 N! C/ c0 b! A6 R3 m3 {7 aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 i+ h, E$ Y8 ]# P. n; |! U. |set l (l + 1)
  I! \. d* {- c4 j) G]
; }6 s5 V% P1 eend
! U' G1 u: E+ b2 T- m
) L1 ^& F9 _! W# k( {to update-credibility-list
9 j9 C1 h. }4 }& F2 {5 Mlet i 0& z5 d5 Q6 |* H  W
while[i < people]  V$ y3 K7 Y4 h: i! V# Z
[
7 r- C* [+ A$ `, t& }7 h: K" ^let j 0; z- G" s6 y0 B; g) y
let note 0; L0 O1 Z' ]& s% P# J
let k 0
' X: z, S3 o" [, w" ^3 f;;
计作出过评价的邻居节点的数目0 I) X& |; d& X
while[j < people]  a/ a4 H4 |* Q1 v# K9 Z
[0 M! B* G' T- R
if (item j( [credibility] of turtle (i + 1)) != -1)1 a& Z' J" \$ H
;;
判断是否给本turtle的评价质量做出过评价的节点" I) I) [8 O' i. o
[set note (note + item j ([credibility]of turtle (i + 1)))2 O! C/ p: z1 M6 s4 Q
;;*(exp (-(people - 2)))/(people - 2))]
! B9 G4 L: p: {" ]2 I8 {
set k (k + 1); X9 W: ~* Z6 C8 Q+ z' K9 h
]' B6 o9 z. N" K9 u
set j (j + 1)
; q1 }  ]# `9 I/ S0 y]
' ^$ c( c# ^) A1 N& p- Q) i3 }set note (note *(exp (- (1 / k)))/ k)6 G8 v$ H0 v6 z3 e
set credibility-list (replace-item i credibility-list note)
) e: Z0 f( V( s" N" r( G. }set i (i + 1)
# v! w) f( t- Y* _2 B]
2 D" H8 V& G/ |; o% D/ I: [end" X1 K* I5 A: `5 ~& O
5 }4 v; I* q# K6 G7 Z) c5 Q- N
to update-global-reputation-list; R6 X; u. s' {  x  c" F
let j 0
5 z6 b9 \" }# awhile[j < people]
" ]; n% L. \! W6 ?; z; C! v[4 L( k4 ]5 e9 Y9 ^. X9 a
let new 0
* l! u0 ?( ?* ]5 [& b5 w1 m: T- ~;;
暂存新的一个全局声誉
) C" h. s6 K( Slet i 0
  o0 `  e# c% L0 _. `2 Blet sum-money 05 C4 _6 y$ K8 t6 t9 O- E
let credibility-money 02 D$ Y8 I5 l5 a5 ^3 L
while [i < people]7 K) o4 Z' V/ Q# K
[
& J( G* `4 q, S0 G. xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
) \2 u! A3 D$ K) I% L- pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- u2 S0 ?' s1 ?$ i9 ?
set i (i + 1)
6 I! a6 }6 c, g1 `]
& `7 V4 _; B% F2 G/ `8 P8 t& Clet k 0/ E4 j  o$ T" U
let new1 0" }# y/ {# D8 Z- L" C
while [k < people]
8 \; B+ `6 Y1 F8 [- ?( N/ B# x[- f% y. o" B$ x( ?# l5 r# V
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)$ N( e- I7 I/ p: T" t
set k (k + 1)
( \& ]* e4 }, t]
" a) I2 \8 B3 X9 y' I$ z4 p: r, tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " l7 a2 ~6 Z! b! S3 o' `0 J* o  V  d
set global-reputation-list (replace-item j global-reputation-list new)
' c8 \* z7 i" J; Tset j (j + 1)
- @4 Q2 `) P0 [2 M: x' }" q]
% [( s$ [9 {  Q& K, V6 a- k( f1 F+ [1 aend
% m! B- ^: L0 X4 K, w
6 t2 }7 A3 ^& h0 p0 k: K: s% n
* \. F/ l5 @% o- j$ Y/ @/ H, ^0 p
5 P  v0 a2 u7 ?; R# ]4 C, h( G4 r& Oto get-color
' M0 _! ~; W' u8 w* @  S
; _: f/ \2 `& a4 u8 g  N: d; qset color blue
3 u. [8 }& U" o$ c
end
8 J2 H' @3 K( B
5 [, J9 K7 T! G6 M' }+ F; P" q9 e$ t) fto poll-class
# ~- q# J* Q, ~) Lend- X# z5 |4 B$ I5 ~3 T. g/ U

) W1 @' @: B) y2 ?7 Gto setup-plot1
! d- t" r% y' Y4 s% _  t
. |- Z* |& n& Tset-current-plot "Trends-of-Local-reputation"
' J% R5 k+ T: ?/ t# X; ?0 C, }! A
! O5 L7 @1 n; H$ _4 Y! E6 q5 |/ S$ j
set-plot-x-range 0 xmax
& H" x, C$ X& F* |! D, S" _: X
! q( Q) P; |6 `% z5 Z$ H2 p* G
set-plot-y-range 0.0 ymax

2 U& p! `1 C, l- _' }end+ s6 s1 T0 D$ `. F7 R1 O6 G

+ v3 j0 ^+ Q0 {0 xto setup-plot2
1 H) S; k# _* O. z* f
  J: {2 o7 C* l8 F9 aset-current-plot "Trends-of-global-reputation"
- o9 h5 W7 Y: z- v3 {

& g5 [$ @/ K' J) G! ^set-plot-x-range 0 xmax

: {) m3 s0 {6 A# V5 ]; S& V. r) [  [& X+ G8 o" ~2 O) R- ^( j' Q+ r& a9 b
set-plot-y-range 0.0 ymax

& S* P7 n! \5 `& F# Aend
3 A  l7 H) B, U  s  _  ?- U' ~1 |: u8 W
to setup-plot3
9 G/ o+ s) q: c0 i+ h# ]% Q7 l7 H+ [, J+ S$ |
set-current-plot "Trends-of-credibility"
+ K5 }+ A% N) _' X

5 j" v$ ]. _0 T# Uset-plot-x-range 0 xmax
. d' S% r( W* I
8 Z$ o! N6 d9 W. e
set-plot-y-range 0.0 ymax

, J+ s3 s+ H& U* A; h; S# P) W! iend
% w; b7 a* l% G
- ]5 G7 n9 ~0 }to do-plots
" l9 z  h: [$ V3 f" L4 E4 e$ yset-current-plot "Trends-of-Local-reputation"5 u. q, [# ?  C: @/ V7 E
set-current-plot-pen "Honest service"1 b. t: G5 d# ?  I, E
end, ?3 v1 m. b0 E# F% P+ }' {& ?! A
. o9 |, ~" v8 S, 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.
1 B6 {% J3 a. ], D8 H' c* u4 i2 g1 D8 H: t$ 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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