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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:8 |* d$ f+ F0 U1 \
to do-business
# g4 b! s2 ?  {% I rt random 360' S3 ], V% B$ G! ?) V( D* j
fd 1  z% F5 V5 `' _
ifelse(other turtles-here != nobody)[  y1 R2 e* v- c# f' @
   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.5 T& R0 j' O' m( e# a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % @, G! S  E% o4 {
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 f) P; _( Y& o' P0 i9 U7 S, o5 T0 W   set [trade-record-one-len] of self length [trade-record-one] of self! R# r; Z9 U5 [; C& @. ?
   set trade-record-current( list (timer) (random money-upper-limit))
/ F! G* `. @7 H0 L& n
! a2 G6 `% P1 g( v3 D1 n5 I问题的提示如下:) b' K2 t3 n8 z# ~$ x
9 J. {1 j$ U8 y2 d2 q% U
error while turtle 50 running OF in procedure DO-BUSINESS
# r( l9 a* e( I0 L# X7 K  called by procedure GO
; Y# _# \5 U. t6 R% NOF expected input to be a turtle agentset or turtle but got NOBODY instead.
% r5 d# i; _$ x1 N( {
(halted running of go)
- h8 m1 `0 b4 w* n) X6 M; J
1 r  A  X/ O4 B! c! K$ r+ c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~~3 }8 q3 r6 U1 X  o8 D1 b: R
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9 I: U0 Y, ]8 W' x' ?  w" E
globals[4 m1 m9 x8 K' u$ @$ F; I' x% k, R
xmax
+ L4 j; A- D: q1 O8 A, V9 V3 d- Zymax# H3 J; r1 _' |& K! h& q3 ^: {7 v
global-reputation-list
. N5 V( Y& U1 A' }+ i" F# \; z! `/ Z. p
;;
每一个turtle的全局声誉都存在此LIST& C3 ^" \7 O* ]+ p+ r
credibility-list- J0 k" k" Q0 @' y  ?
;;
每一个turtle的评价可信度1 U! J% ^* w  Z1 b' c/ q+ G
honest-service
0 |3 z& m0 ~8 m  Q" c- M1 h) R, punhonest-service
! C2 m( P9 {0 X" joscillation
! A: O( H1 X! I7 u. B7 u. t. |3 yrand-dynamic
- `0 t. P1 T9 q4 s& []9 K; M3 C$ N% B& B  Y

8 t. x/ s1 r. p- N3 hturtles-own[
" o# s8 H6 `& `% k  U! j2 Ctrade-record-all. f3 }* h: e. L; x' ~7 C% D
;;a list of lists,
trade-record-one组成# B8 O  Q, h' k) D
trade-record-one- N/ Z  X; r. C+ M' W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& g. X4 U+ Y: B( U: f# @- u" g4 D% R" n. w$ T! W
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
& z& j; _; [3 D2 A7 }" h; Atrade-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]7 `: ~/ w# D% L
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list2 O1 V& S; g. X3 I
neighbor-total
( E, B/ s9 B5 f;;
记录该turtle的邻居节点的数目
2 C& A, @& ^4 t7 Q6 rtrade-time
9 X& a: h! D/ N- g;;
当前发生交易的turtle的交易时间
! y! ~, a4 N* s; h+ g- Vappraise-give
6 q4 L1 D( }4 w;;
当前发生交易时给出的评价
2 E2 l9 d! j6 G, ]$ Pappraise-receive
5 i! E4 |+ D* L;;
当前发生交易时收到的评价% ^: W& _1 ?$ n- d" ~( q1 R9 o
appraise-time0 m4 |8 n5 A1 t
;;
当前发生交易时的评价时间
8 q) A" @1 D, s8 F; F3 }% i$ Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* {2 |; x$ ~- M8 |& e* dtrade-times-total' ~) M! x% x) _: b! q) o
;;
与当前turtle的交易总次数
. V0 k; a( Z, X% D' |( H( ftrade-money-total7 s! g9 D; `1 \7 F+ [
;;
与当前turtle的交易总金额3 g( D/ b; W; G( z/ A) u
local-reputation
, F9 m( A/ F1 O3 Dglobal-reputation
/ R8 N, P7 c- J( Q" @9 [credibility- e9 o, }  s% ?+ K
;;
评价可信度,每次交易后都需要更新2 G& B9 T# M5 x& \* K# D
credibility-all
' J0 J% L( E# C/ S8 P;;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5 g7 t+ f% F0 C7 \7 Y
3 v2 z8 v: w+ Y1 |
;;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
# Z& @6 \7 r' ?credibility-one
& s0 Z# ^9 Z4 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people4 Z6 g$ ]+ x9 i% F/ i2 h
global-proportion; ?" y) l. i8 |  ~
customer, V3 ]/ N' N" \/ n3 P3 t" E
customer-no. [# R9 h- p( _
trust-ok! m8 F+ O& _5 y- w
trade-record-one-len;;trade-record-one的长度& j  m5 p9 g3 K% r' f5 N7 r; l7 @
]: Q$ d) `$ M1 x& _# i

& z, J1 X2 ~) K;;setup procedure- I( N  f& y( _+ f/ s

1 ^  x4 k7 ^1 y; O9 s3 _to setup
: l: u. ~5 f+ `  O' O" v2 v+ L6 H
ca

, A5 h% \8 [3 o, x
& u5 b; r$ H/ Z+ _! B' |+ pinitialize-settings

: R* {. ~' K) F
' O/ `  N: r! ]  ]& H, E9 d& bcrt people [setup-turtles]
1 o3 b& c& X. U4 P) Q

+ K* B5 L6 E- `# D9 qreset-timer
# D% H: W' i$ e9 E) u, x1 r
& d( D+ u  i0 Q2 j4 ^
poll-class
$ L7 G( u9 J3 O5 ?

5 ^% r( v/ o2 \8 D. [* Csetup-plots
' f, `; U1 R6 f* S, W+ \( P
# w! z, P! i; e9 t
do-plots
9 o! I5 y1 \+ a& k) I
end) e' u1 N. t3 Z% K& {) {4 [
' b4 j+ `' r* n; L& t9 z
to initialize-settings
% I4 r8 y- L" k  ?& m: `8 D8 [% ]/ x
set global-reputation-list []
1 Z  S/ Y; k/ ^4 l- j, D  h

+ n6 u3 M) ?. i" F- _set credibility-list n-values people [0.5]

9 F9 o+ a# k2 L0 R4 g( A( V$ C
! s0 y8 A0 Y& j; U" Qset honest-service 0
: m2 |) [( y  c9 V  `$ W

; ?9 b9 r4 |" iset unhonest-service 0
% Q. y- I, ^/ m+ U' k& I+ P
. w! d( V' [( u+ r1 w& v" `7 Y8 W: ~
set oscillation 0

: X/ l  Z' o1 f
1 i4 b5 Q, p0 @6 ?# ~' U0 qset rand-dynamic 0
. k, s( |; n1 e$ Q+ K  ^2 M+ Q
end1 g# C8 A  Z! Q2 [, n
% H. T9 O* m6 H) _+ ^
to setup-turtles / F% z+ ?, u: d7 D2 A6 T. }
set shape "person"
  x5 Y- {. H: M4 r& W. r  y, {setxy random-xcor random-ycor
( i5 b) f0 d* R. }& S; ?set trade-record-one []0 k* b& o" E9 h, x8 P' g

1 u$ ]; J; T. |! G( i! _set trade-record-all n-values people [(list (? + 1) 0 0)]
9 `  ?3 X. q! ]9 m8 Q9 r' u

9 d* }- _0 C! F9 Mset trade-record-current []
! o& j! R( o- [# C% y# F* Nset credibility-receive []3 U& j. L$ ]* \8 A/ G' ]
set local-reputation 0.5# p. s' s# k. a
set neighbor-total 0
  Q9 t# ?" K3 R, lset trade-times-total 07 p/ b- P0 J) K; [/ P
set trade-money-total 0/ N. M$ Z# i+ {0 U+ e; z: f/ f# f
set customer nobody' Y4 G1 e7 Z: z) s
set credibility-all n-values people [creat-credibility]
7 U1 h) ?, t8 G! gset credibility n-values people [-1]
. b- s/ [9 U0 T! {2 b- K% F/ |get-color
( C. W+ F7 R1 r. l3 e! d& Y( o, w
2 X, v; S$ o4 o- W7 Q+ B: j" a4 ^
end
( j8 C) r- Y8 N% u+ l2 t# S; L
+ _1 _6 ]5 m6 ~to-report creat-credibility7 v8 e- j- Q1 p" _
report n-values people [0.5]( Y) G* B8 a2 x3 }4 F! w
end7 S# T! w$ G6 C

  C1 `, p6 E+ n- a* j( Y! gto setup-plots# y  P: d. F. e4 b' k) H

3 F+ I0 V5 k9 u0 @# T7 j/ O+ qset xmax 30
' ?+ ?7 {  F- ?) K
/ d' \7 A/ U& r+ ~) H
set ymax 1.0
# P& A  V3 d# Z

5 y9 i0 o3 ^, k( R% eclear-all-plots

) c4 W- ^/ }# A7 U
9 y9 V  V2 q: {5 A# N1 K- Vsetup-plot1

) X; ^- o- ]6 u: u" v
9 ^: k3 J) |, l: i* p% K- v( Csetup-plot2

% O! r0 @" ?8 C# q+ k
' P; q( {8 u6 d+ ]  w5 Ssetup-plot3
! Z- C; V3 f5 P1 ~7 x
end
. d/ V" H: Q- T9 X( N: b5 G" Q
/ F) @0 L1 o  x6 v& W0 [! R;;run time procedures* ^  F6 }. ~# m$ p( ~& O( S) X/ G

2 j% D$ q0 i: m4 d. h/ K, H) Oto go
% F% b8 b: k- K; G+ E, `
. X' P/ _8 L8 [ask turtles [do-business]

6 P; a8 C. s; X( O, f4 a( _$ s& aend1 u5 C- ^1 N* j% d

% U* \. N3 B) G0 O1 R9 [8 O0 {to do-business
) T* ?2 h8 D( V5 W4 J0 n2 u

7 B; y, q* l! `0 T% ]
, }8 P  h: m' ^9 F! Mrt random 360
0 [- i3 C" \" M2 S

: S2 u$ ^' y# xfd 1

" h5 {* s! T# X, r- x8 g2 \. s( v, f3 P& ~9 I# l9 s
ifelse(other turtles-here != nobody)[

4 c7 n6 `" Y9 w& Y+ @/ K8 f7 U9 g
set customer one-of other turtles-here
, R, J4 N! \8 d8 q# }! J
1 e! W" ]0 _4 j  i5 [9 `; [
;; set [customer] of customer myself
" U4 g- j- I* N( a4 n" F
% J. b3 R5 h) [! w* a0 m
set [trade-record-one] of self item (([who] of customer) - 1)" d+ ?( n9 }9 D0 P/ o( C- P0 ~
[trade-record-all]of self
7 c1 d9 s, C2 g4 ?6 }9 U;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 g9 n4 B4 f& @) {

, T5 O9 Y  R  }6 [$ B, x- r7 x" gset [trade-record-one] of customer item (([who] of self) - 1)& v* G$ b" p* m$ I( y; z
[trade-record-all]of customer
7 n  k$ l! I. i/ E

6 T2 U- o/ s, \3 W4 h6 g3 J+ Lset [trade-record-one-len] of self length [trade-record-one] of self

2 z0 O+ I/ B7 y7 P! h1 y
1 G. l3 M& N7 ^$ P/ _& Nset trade-record-current( list (timer) (random money-upper-limit))
4 R5 Q0 |* s' A  h. Z$ [

5 x5 l' b, E6 q% Q$ c  [+ @ask self [do-trust]
( [1 @& N+ I6 L;;
先求ij的信任度
- @6 C. s  Z. |4 u: K# c: W# _6 ]
if ([trust-ok] of self)+ b; Q4 v5 O$ L" Y
;;
根据ij的信任度来决定是否与j进行交易[" @* f8 R2 H6 H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. y: \) C, [8 |. a! q' F8 X

; G5 q1 ~6 l# ^5 r- q+ o! X[
( S2 [0 ?$ N) W* x( d7 N1 v
4 F/ f8 s) Y/ |
do-trade

* z, g+ k7 X. O8 `3 @6 C
8 h! o, f7 n$ {/ h; |: q) Qupdate-credibility-ijl

/ Q5 H6 g' v; B7 u
- W0 w/ v8 ?0 e1 a# R/ E7 tupdate-credibility-list
$ K) A& _: U! I- r- Y

. [2 }; q; T- E$ w
' H5 T' M9 L- M5 p: u% d, \# m% Jupdate-global-reputation-list
) q* C1 c2 y& n% P; o, e" x
+ j" }6 |% G& u) ]: ^
poll-class

: a% e( i& Z/ ^* _! T* P* n" q5 _9 r, b
get-color

2 N9 D; r, V  s7 f" w+ r- h! O
7 U: G0 L# v1 t]], O) |0 B" _5 b, S4 X
& z0 ]3 \! b' u
;;
如果所得的信任度满足条件,则进行交易
9 d: U: V$ I5 e9 y* w8 N
+ M, n6 p# U- C. G1 H9 w- w5 o[
$ |9 U- w( Q3 u+ W5 R7 S2 [4 u

6 h; u# _9 M3 ~, rrt random 360

5 S# y# p# C+ R; J$ k( ]  a+ Q: C$ s' L( _* B# c: `9 h
fd 1
- Y( ]3 h/ o1 ~/ L8 q

- s" f; O) ^' o. J6 Z9 c3 []
* U: R0 }) g4 v" l/ w
* M% ?4 r# N( m# A7 d  d& i6 o: e1 D
end

" d, ~4 L3 M: w  C* E) ?& W6 `- F
0 p" s7 k7 R$ ?to do-trust
* ~5 v. z; o& {  j2 o- \( j+ }' Qset trust-ok False
% W* X; G/ N3 n! _+ s7 j% d6 q) n) ^% k5 I: b6 ]
- q% A# ?1 b! p5 }
let max-trade-times 0
  V" \  d/ _7 m. F: D8 pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" }  H8 I0 s' I( T6 I' klet max-trade-money 0
) Z8 h7 h  H" |# @# F8 s8 N4 @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ W# f- i. ~$ W/ }1 o' ?4 Rlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ V7 H! d# c% Y5 h

. a1 C; x, j- @: r. O) R
( E7 m- \4 e3 C9 Q
get-global-proportion
8 ~7 n: A  c' I& d1 ulet trust-value
* Q1 ?9 h% Q( [! g. Y; I) Olocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

' e0 r6 Z/ L; u7 y, m- \9 Nif(trust-value > trade-trust-value)4 s9 T5 d% F4 T; X* y
[set trust-ok true]5 t% R( _% o# v8 f9 b
end3 E* z$ H2 |  {- y9 T/ d$ u

! g6 i8 s5 [1 @2 w  i$ N+ }; Z/ Pto get-global-proportion
5 @  ]7 I& n& {6 a; c; ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 T8 d' }3 g$ F: C! l7 z' z
[set global-proportion 0]
( h* R1 t( A2 c9 V8 q' @[let i 0
+ G2 r) W3 J$ }3 ~' M8 Y% Olet sum-money 0
% r, z% v9 s* `6 G! P3 W  kwhile[ i < people]& ?1 y; @& j7 h- z6 Q& Q& T) O
[
" i8 l  r! M; S6 K, }if( length (item i1 c" F( m* j1 U; U) H, c. ~1 v* Z; C
[trade-record-all] of customer) > 3 )
$ M6 \/ @( r- g
[% J, a% Y/ z+ \$ ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))- t; N  i5 B3 p, i3 C( |: D8 x! A
]
& r! h8 c" p# c! c; H$ W  a+ u" \* b]. T2 D5 q* s- ]
let j 04 i# f: ?" \4 S) d; B9 V6 Y% D1 X9 L  N
let note 0
) _. T* L& z" x- swhile[ j < people], g" T& J/ e8 L8 o
[5 c3 R8 R% @1 G6 `
if( length (item i
3 f. J6 @* @( u) o6 k3 [' D[trade-record-all] of customer) > 3 )
9 n" S- S' Q' a5 X3 y7 f
[
% F& ]# B) ^7 ]7 ]7 H- Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" _8 a! f( o1 t0 I& |( H$ v9 G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]( b$ d2 m& D5 ^! O  ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 O( V' |. g$ |% r% ]]
5 S+ A% C# Z0 O! X5 T7 @) p/ V8 s]5 E, c: R- V. t  I. v3 Z. }: j
set global-proportion note/ i. w- I- s% Y9 F/ U$ N; X
]
# o% Q( q* v* y) f4 Yend
4 J* D$ e% M0 ?* R  C  W$ d3 m) N4 D# N+ {- D3 L) d
to do-trade2 P! V, ]7 q3 m; I
;;
这个过程实际上是给双方作出评价的过程
0 b  d  D" B- G% t- Lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, t7 Z  X  T" rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" T$ j. r& U( @0 E1 ], j; W1 e8 N
set trade-record-current lput(timer) trade-record-current
( ?, P& {. g. g6 y3 L' L+ W;;
评价时间+ Y  w; D& @+ H, D: M
ask myself [4 q- d9 R- c# Z" l/ {
update-local-reputation4 m, c$ E+ a" g+ F( M: Z: ]* l
set trade-record-current lput([local-reputation] of myself) trade-record-current" W9 T; R- }! A% {9 k
]5 {) n: R# ]/ y& o- @2 Y
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
3 u$ v2 W/ F$ D# b& a0 u;;
将此次交易的记录加入到trade-record-one, s# D9 S0 G5 a8 X: q. p: ~
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 U# E9 M0 F: y/ b
let note (item 2 trade-record-current )0 G% @9 g! p5 `5 b6 b$ T: `
set trade-record-current  p) X# ~% L; m: }- U+ F
(replace-item 2 trade-record-current (item 3 trade-record-current))
9 m( v4 }( y% l5 z5 r) P( ^$ l
set trade-record-current0 H% w1 I/ f. R9 ~7 }& j# J* O5 N0 ^
(replace-item 3 trade-record-current note)
* _9 P6 n' Y8 O, U3 d
. V" V2 P* H& U: N5 g& I2 U. X' F
: {# R' J- J1 Q3 i6 I
ask customer [% \- [9 ~9 y! ^6 T1 n5 r& m+ X" S) A
update-local-reputation
( s) v/ r2 @; i' Y$ j! J7 Gset trade-record-current
# e7 b  ?2 F% [& [(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 E% T8 ?! a9 Y$ n; B0 n& c7 e/ i
]
! P/ V. }( V) [4 E
9 V( g7 T5 Y7 A, q, D0 e

4 J9 t7 [4 @) [+ Fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- d4 @0 G9 F7 Q$ a( Y2 t

  B) Q3 s9 k" r2 u0 |) xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ ?/ ~( V5 x7 D$ k! ?5 V; W1 j9 I3 K;;
将此次交易的记录加入到customertrade-record-all( ~! ~# N6 L/ {( m& {9 }6 C
end1 r6 _% A: N3 O% d- a
( [% O- v7 y0 F/ P0 O+ Y" K
to update-local-reputation
3 V' o/ |3 m' Kset [trade-record-one-len] of myself length [trade-record-one] of myself" o1 C9 j3 v% i% A
1 z2 y. D& G6 q8 r! E9 X5 ^( u/ w

' n, @1 R; w; g, N' k' \;;if [trade-record-one-len] of myself > 3
# p2 l$ d! T, o$ a5 ^
update-neighbor-total$ y! h- Y) A9 g* a3 ^
;;
更新邻居节点的数目,在此进行
, k$ w  z/ N) b. hlet i 3
+ p! f/ L' J9 C2 t' ?7 T" Tlet sum-time 0
6 U0 f8 w6 t- K% ]+ uwhile[i < [trade-record-one-len] of myself]: `% v: A: i) _7 {; `0 p4 u$ Z
[
: K6 f/ h0 g2 j+ H+ tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! O! r# m3 i8 y
set i, p9 W2 q7 X* J0 e% o4 l
( i + 1)

7 y+ {) x6 ]5 l]
* E) `1 l9 f% E" Y8 }! z: R0 clet j 3
  H* T; ?0 g5 P9 s% L6 ?let sum-money 0/ n) ]# P0 O9 `) @, I% J3 f' F9 Z
while[j < [trade-record-one-len] of myself]) L% R4 L  K, E8 t4 Q
[
5 T' }: l. J$ h( S% Gset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). `) P0 V* d- I# T, W3 V1 i' A4 \
set j
) I+ x# K8 a5 O, X$ A( j + 1)

# ^! a. J  A$ d/ t; y$ o/ Q+ b]
; a) J8 Q5 M2 Z  R7 N0 tlet k 3
0 l" ~) h7 i* W& e, `8 `let power 0
; ]  L" m+ T" D* A9 S& k8 plet local 0
# n# m- @. \! `9 H: Cwhile [k <[trade-record-one-len] of myself]
& {7 Q' ~. C  Y0 z" U+ a: |[$ {  Y0 A/ W1 H$ e, y# q
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) , ]9 ?7 V1 j, N. O
set k (k + 1)6 N( V4 f7 h( B: ?6 @5 V
]
( |  T' m# l7 }/ u5 i% U# A& hset [local-reputation] of myself (local)
0 S! ~3 l( `# k1 d- Cend
2 Q0 c- ^7 k6 A: q0 l5 V
/ ^9 w- h: `1 X# ^to update-neighbor-total$ B- u$ g* j- v. F6 `5 m1 Z

$ O6 |5 k2 g: Z/ u1 Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( V' ]- r: `8 j" j# F8 S  Z1 c

& R- l6 F9 @* k: a
& R2 |% v) _: k6 }8 h8 P( D- T0 E& |
end$ w4 d5 b; B) l' ]4 ^

* R" k4 N4 K! H& T, Kto update-credibility-ijl
' _) b" Y! c+ ]7 e" u& k* w1 a' n  z* b. v
;;
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。% S0 p: G0 i  h3 m1 V1 y# ?
let l 0
# g5 W: K' R, uwhile[ l < people ]
, N) `" v, y% a; @' ?;;
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 ~4 i( _+ h. k5 E% U1 \# Z8 b2 r[
1 }% m& B& E) i7 O8 u7 }+ Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 U: w  q5 @/ Q, ?: i% q
if (trade-record-one-j-l-len > 3)
, r. x, a6 Y1 T[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
% Z5 m, \" C4 Mlet i 3
$ x/ |5 N* ?9 n( `let sum-time 0! T: f4 C* X: M* q4 |; M/ N
while[i < trade-record-one-len]
2 s8 C' A4 y3 @6 a[
8 _! Y7 E4 A5 nset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) w% C# H+ X# D  W/ G4 v: ~' g) C
set i* n0 w& G3 z4 S, _- y
( i + 1)
2 v  i2 A  c( P6 |7 ]6 W
]" d7 e, I9 Q& Z6 H7 }5 H" K, l3 w
let credibility-i-j-l 08 [. t- X; J- |% g/ n! o
;;i
评价(jjl的评价)
4 y6 ^0 B2 x! A; J) m$ ]let j 3, I. G$ A' D  Y& O/ l0 f
let k 40 ~8 l% j: X! S
while[j < trade-record-one-len]1 ^& v" A! ]; ?5 k: `# O2 e
[* l, S% ]8 i& |5 C- c/ o2 I9 K1 `
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
& R2 M  n8 P- t: T8 @4 m1 Q  q: E6 Xset 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)
: e# i% Z/ q$ g  h5 m6 W/ Iset j; k* W  P1 U, F, t# @: ~/ B
( j + 1)
. ?# \% d' F; D# f2 P/ Z, f
]
4 O$ q  F4 v- R/ Lset [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 ))& d0 z5 x  Q; k+ \

! P- s9 X9 a' c5 p: ?) t8 `1 x$ E
1 n9 b+ t9 x3 N. U
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
8 f. B0 f. H2 \;;
及时更新il的评价质量的评价' `2 t5 E% G' X* g9 f4 F
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ g$ L. o; F0 B# I
set l (l + 1)( s, _( ^% i* F) j4 _, T
]) |8 f3 C" P  o8 S( q' q
end
  U9 J0 A+ l; L; _$ [( t+ c* E  t& o; Y  \
to update-credibility-list" {$ b! M8 P& }4 f% n
let i 0
( F' L9 K) T+ L3 awhile[i < people]
0 W7 i' D5 a; A* |$ r4 U+ M[- y9 S) f$ e0 W$ d. J
let j 00 B) L: y; K  W' O6 |. S* j
let note 0
* r0 X" l" t6 I" L: ~  ?5 Z6 t" M% f* Glet k 0$ l  n$ E8 y+ Y- N2 H: p4 c- v' V( t
;;
计作出过评价的邻居节点的数目
1 m$ q6 {+ ^  S2 `while[j < people]% O2 u7 J% h( @" L$ f
[
( c, L" e! E* q& r& Sif (item j( [credibility] of turtle (i + 1)) != -1)
9 `3 R4 Y3 c) A& e1 C;;
判断是否给本turtle的评价质量做出过评价的节点# a. S$ {3 e! t1 q5 I+ p8 F
[set note (note + item j ([credibility]of turtle (i + 1)))
" n2 m' M3 u4 g. [& T;;*(exp (-(people - 2)))/(people - 2))]
& K2 {2 x3 |. c
set k (k + 1)$ F) n" S; [; E) Y; |- {, J) t
]9 n; a) f% k9 @6 I' ?" i
set j (j + 1)6 \9 b/ Z& v9 z6 ]8 G9 B9 l5 \
]
/ u+ c; q0 o1 C5 N3 k6 u( v# ~, vset note (note *(exp (- (1 / k)))/ k)& j- _4 h2 A4 |% V3 @2 W
set credibility-list (replace-item i credibility-list note)' s3 S/ @  i# O9 @2 Q6 M
set i (i + 1)
8 L% `$ }; a" e0 v* m3 N* Y]: [9 j8 e6 j0 V
end
+ X4 T! x7 W, I/ X- a( ~2 r' Z! [$ D2 g$ Z0 K; M4 A
to update-global-reputation-list  w% l, o# S* i. }5 x# G
let j 03 @* W8 F8 X* d
while[j < people]
" f1 a: U- a9 D[/ C9 c- |! A( S3 ~5 R' R
let new 0
. E$ w0 f7 g; ]9 Y( z5 I, ?;;
暂存新的一个全局声誉
$ z7 e4 X# y1 L7 J/ n3 z* vlet i 00 F. F+ |& R! m3 o; l+ _& o& y
let sum-money 09 @. h7 U! C% q4 Q$ s' G
let credibility-money 0
1 B+ U! h7 Q3 \while [i < people]
6 J8 A4 E. N0 O' `: `6 p* I[
3 |' w' q0 J; ]6 Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ h( |9 E$ F* W
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& Y: X" i, r/ b( T) ^' ?: Hset i (i + 1)
- e4 q( l- `. b& u  k3 @$ _], o4 |2 E6 K* l$ D
let k 0- k# |; ?" t* n0 y. O% m" h0 i8 |& a
let new1 0
) G# d! q$ D2 Wwhile [k < people]
2 B' c; f/ p; ^$ s% B[
; e6 i' K" |5 @- `; E  ~* m4 h8 {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)
: E1 @4 _) M8 D( \9 ]set k (k + 1)
- j2 i) q( `- ]- M8 l]
6 @8 e+ f4 M2 P- |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- p! \% I9 w( n. x, tset global-reputation-list (replace-item j global-reputation-list new)* y/ I, e' ~; ^" T$ t
set j (j + 1)+ M* _2 L" b0 S! \) \* G6 |
]0 \6 f+ m5 w0 [9 E
end
% K6 H4 f8 ?# ]5 F* A; t7 K5 P  F2 k; C$ ]

) h2 W9 ^* Z, L9 Z' T3 I. E* t3 t+ t% _- }
to get-color: g6 r: ^3 u* E1 Y; j" d

" V3 p4 s5 M  p1 Iset color blue
; e9 S6 A  Q7 z" x0 v% @8 R
end
- O) H# W' `& W6 R# u+ _7 W0 J2 G; a$ b( B0 v5 }8 f9 o- u+ b
to poll-class
- e9 w( g, s# A. ^9 Kend
7 ~; R# ~( Z- v
! k3 t( P) g8 M, S% wto setup-plot1
1 d) k' T1 s: Q7 [# N9 e: z
" U; H* u) s; T% Z- o+ ]$ L0 S* c) tset-current-plot "Trends-of-Local-reputation"

' P' l7 d+ ]+ ?; R) |9 H
7 ?% @2 P5 j* P" C( T* l- Y5 w! wset-plot-x-range 0 xmax
  {$ d. M0 r+ u- v2 P0 P

. W0 Y# v. y6 P9 E  vset-plot-y-range 0.0 ymax
9 l$ ~/ w7 M0 O2 b
end* C. z5 \8 p7 V: B0 [% B8 [
/ G4 ?$ d6 G; h) z6 ~5 ?
to setup-plot21 j  i: x& |& m- \& J
; o9 j: c0 W% {& Y1 u. r' G
set-current-plot "Trends-of-global-reputation"
+ r; U+ A2 i* n5 u

4 h/ ]$ Y& b' D7 }/ B5 Dset-plot-x-range 0 xmax
" Z; v6 L2 a9 f% Q: P
' [, j+ r  i9 V" T1 E3 s* J
set-plot-y-range 0.0 ymax

- i) A" ~- v# Y0 o- ^end
" N1 |4 r; v) x4 h, T* N# f- ]; H* ~, ~1 W& V
to setup-plot36 w8 F; I" T( L1 G( ~9 N
- p6 ?5 d2 b2 Y2 g. `8 J6 c
set-current-plot "Trends-of-credibility"
2 \; T; N2 s: ~4 l6 S- i

; x3 k9 }8 s' m4 {set-plot-x-range 0 xmax
" @5 l/ M8 e% R3 ?/ _0 r

( H9 b8 |4 \5 k, V) |: jset-plot-y-range 0.0 ymax

1 W( z) A; H0 p& W0 A1 mend
$ k5 P* Q$ G3 Q2 n# F$ L' Z) X- s; X( q  C# k2 _
to do-plots
1 z9 _) s8 o5 v% S- J2 @9 \2 Oset-current-plot "Trends-of-Local-reputation"7 ^# ?3 d/ {, u2 I8 D% J4 N
set-current-plot-pen "Honest service"2 s4 D" I' G5 r5 W9 M0 `9 ]6 p
end
0 a) a9 j; k  q/ t8 h9 J3 M+ F1 M, ~; R( K, @8 g8 a, q: N
[ 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.
, O$ F  ?- s/ M' }3 h8 g; j) W0 U# g: }6 L/ C
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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