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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:
0 i  \/ V9 ?  ~6 v& Q: {7 ]6 y+ P! w. Kto do-business
7 h+ |" P( ?. m) { rt random 360
6 x1 c" b8 _  r/ E6 Y1 w fd 1) `3 i' e- w' K* q& V
ifelse(other turtles-here != nobody)[) u8 ^. [4 w1 @" R
   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.
7 w  F4 `" b$ b' {, i   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " a( c1 R! A: h! g1 A' A. j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% w  f* p" b" ?   set [trade-record-one-len] of self length [trade-record-one] of self  V/ d( }$ N0 t+ n
   set trade-record-current( list (timer) (random money-upper-limit))
$ `. D6 i: Q# t8 _+ b" `4 T. y: b$ S# t5 H/ S4 F
问题的提示如下:4 M  G1 |( ^  ]0 o$ x' F: [7 ~/ V

% e; E4 U' L, berror while turtle 50 running OF in procedure DO-BUSINESS# h3 E7 z% l1 F, E5 w1 N$ w
  called by procedure GO
4 V; h$ Y' M$ Z" `OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 d7 @' U, A2 Q" {, ]
(halted running of go)
  A4 M2 N) }2 z& {( m4 `2 W! a( D  J4 j. l- I# ]! Q
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~~
* n  s, ^0 t- }9 h8 P! 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  n; y' H! n3 M8 t. I; l! n' ?
globals[" k$ Q% y4 r1 |
xmax- o. h" }3 `- _' F+ ?
ymax
8 F1 M6 D; ]+ Y8 b9 U" i: Y& zglobal-reputation-list
, w% J1 V' Z% g& `3 w
# U. ^: g7 l5 J! e3 Y# U. K) R3 ~% ?;;
每一个turtle的全局声誉都存在此LIST: ~  r$ O0 b: s8 t& A, j* ^
credibility-list! I1 H& w9 D! j  @' l
;;
每一个turtle的评价可信度0 J1 ^" ~5 R0 ^( a- Y# d0 W. J
honest-service
( A0 V4 w# `$ Y0 Kunhonest-service5 m% K/ s: z  C+ ^
oscillation) ~0 J/ A0 ]6 G  n* R7 Y9 @; o! t
rand-dynamic# f/ M# E; H4 t) F8 E5 \/ K
]2 \# ^5 ^7 l# J5 w. w

# u$ n8 R1 c0 X+ @/ d# a9 s& k; ~turtles-own[% W1 g% h( g& \
trade-record-all
, F* q( x' U+ ~0 R;;a list of lists,
trade-record-one组成0 a( `; s3 Q1 w; ]6 ^* x1 o, [
trade-record-one, ^$ z  k* p& ]; w% I% |. M8 O1 @9 P
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& i- |; B4 N8 E% {2 i6 Q! s2 Y7 q

7 q# t* y. r% U! W! }7 Z( Y8 y# H;;[
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]]* w. l+ x! w" f4 D% @
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]
- h% W+ i3 Q) i( z& y6 p3 lcredibility-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
& F9 K/ l! n/ }3 z* Xneighbor-total
$ ^! b- w9 B3 u8 P3 T;;
记录该turtle的邻居节点的数目- T6 S. T0 ?$ \* m4 U
trade-time
1 Y3 |; n% M. W- o' I# R( A5 b;;
当前发生交易的turtle的交易时间
7 Q; z6 J( Y  ]: |& ?0 dappraise-give
* e" Y2 e) T5 }4 A0 z;;
当前发生交易时给出的评价
' A, f2 e. K8 P/ ^7 j0 B, Cappraise-receive1 N$ ^0 K5 Y* l# ?
;;
当前发生交易时收到的评价: u8 ?$ Z5 U5 m1 l
appraise-time
, }  i# L( \4 ^8 S;;
当前发生交易时的评价时间' E: x: k5 a& \, ~) ?- M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉* Z% \( p! z. B5 z! M/ _
trade-times-total' Q9 K- M; A, K; F3 G# r
;;
与当前turtle的交易总次数
! q6 B% v+ `- ~# ~* Z0 s6 ?0 atrade-money-total" f' ~* w6 |8 P" i9 p+ B* N, ~% P% S% O
;;
与当前turtle的交易总金额* T/ @# @0 a" O, K2 a
local-reputation2 R8 T0 M0 p3 n
global-reputation
, F0 K5 u% g. I& i: Y+ L+ Y, e- @credibility: j$ ?: X* W" S5 Z( R: {& g% z5 G
;;
评价可信度,每次交易后都需要更新" k) _# x* Z; Y8 N2 V- h4 L
credibility-all) N  i7 p4 M* q4 M: k+ 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 v( s( {1 `: r8 F( m

4 d+ h; r# f! J, X# R;;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% M. ]. B- }. ^; [7 [
credibility-one" j! x* r6 v: P: Z. M  c# @# A
;;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
( v' @! G2 m* @# r6 p7 ?global-proportion1 S. A! e% V5 n& v! j- a$ [( ~- q
customer
# m2 W  y* H' m6 c- Zcustomer-no
/ v8 y' K; h. {trust-ok1 c4 J5 H1 e- `- m' D7 y6 t% b  |
trade-record-one-len;;trade-record-one的长度
2 R  o" J& D( d5 G# L. y. @% ~, i]
) v) ]* O3 {" F$ u4 t: D5 J( q4 t  B5 U" B. ~' _
;;setup procedure
# {6 i% V6 _/ F; A' [% ]3 w% l6 g1 W
1 u0 u! R' |$ m" ~8 R3 bto setup
  c8 `" j/ v$ p9 n* t) o! ]- c" k0 h3 u5 f- J) q
ca
9 U3 ~" X( U- G% j4 B
) ]# ]7 P$ p0 d& a0 N
initialize-settings
9 y% I* N' }. v1 N, @7 m
- b( |8 w$ \% V0 I$ ~. e
crt people [setup-turtles]

, O# ]4 H  r- i  I
9 y0 a4 E  a/ E5 m2 @9 G' P1 E, nreset-timer

" R+ w5 s) Y, T  ^
' [6 c) v2 i' E( opoll-class

6 N* X) D( \0 q1 C9 S; J0 _: {0 C! t# i
3 n. Q1 {$ |9 U. B3 @setup-plots

+ c9 K1 Y  g, x$ c
9 \# \5 g( P+ |7 }. Pdo-plots
7 K) ]( |/ e! v1 d) n
end, U2 _/ l# R. W3 {! e* N

& Y) x; g5 v! O- X$ b  {to initialize-settings* Y5 |7 g' O9 d9 P
% D! f- [- U0 C" I' J. y
set global-reputation-list []
; b" `, N' x* }! s% }! H
9 O  l$ t. B& o2 e1 y0 y6 E! A
set credibility-list n-values people [0.5]
/ c* ^+ |. V+ k2 V% G, `
6 U3 I5 D( \: Q' p$ x0 `
set honest-service 0
; N% j* y  m  [: ?3 g

1 g* T2 a! e/ K( I; `5 ~; Lset unhonest-service 0
# C7 t$ W; N; p8 |8 G9 Y6 B0 D
1 r# x$ v5 r1 [  ~, ^& T
set oscillation 0
  I, q1 d" \) C# N" K
! j+ M7 {0 a8 d3 R0 u- x
set rand-dynamic 0
* S0 Y! t$ A/ K. A, t, u7 b  x. a. G
end
4 t- ]( V1 R% z
. A* P$ O! {; C; k3 V/ kto setup-turtles   _6 J; P. K- C+ k& n6 ^
set shape "person"
) `; f7 ]0 f- ?setxy random-xcor random-ycor5 X: \7 j: V6 ~# u7 W' _+ L& K
set trade-record-one []0 ^# H8 H8 s$ O; g1 u

3 I( C) U, n- O$ Bset trade-record-all n-values people [(list (? + 1) 0 0)] ; G% |% p1 t/ b

; d# t' X) O2 X; g- jset trade-record-current []7 M% z3 z1 w5 H5 ~, v  a  R6 O9 J
set credibility-receive []
# T- z+ R) a, N: A, g  [, Jset local-reputation 0.5& q. f, n/ z) w* |! G, W7 q2 \* _
set neighbor-total 0
4 t  ]4 d. S1 oset trade-times-total 0# x: ~& }4 y" f, y: g
set trade-money-total 0* e7 l# I7 Q1 I7 |( S/ h+ A
set customer nobody
6 |0 w9 A  C3 l1 M8 N) u( \set credibility-all n-values people [creat-credibility]
# k+ t  L  ^2 hset credibility n-values people [-1]9 G) E( X. S* o/ B( g% _1 ^, U% V
get-color
/ S7 g1 ~% I6 U; h7 m: v8 L

& x( N; L  a3 V! [" l! \& Iend. v9 H4 b: u- L
& l( B! D, I# H/ B
to-report creat-credibility
: ~6 B3 S3 q' g: }; c! ]6 O/ freport n-values people [0.5]* O8 T* D: f- H8 c1 E0 a
end
/ H) M# z" K6 w7 ]5 Z, w# m% t3 h' U: T4 O& {% s
to setup-plots
, a! C: a' E) W8 ?- z& N3 Y! [. B7 l. J5 L/ d7 U! Q5 J
set xmax 30
& Z: c$ I( t; A3 N$ I9 ?2 i
! g$ o: J, I" m
set ymax 1.0

! q1 I0 [+ T9 U
+ Z" o" X& A/ r  P; f8 K4 o, gclear-all-plots

9 u2 x4 w! L  m2 u, F8 D7 c' Q
, {& ?( b3 {8 y2 {+ j9 Rsetup-plot1
, k+ s  X5 K3 b$ a, x* \. P

% J! n% Z( v$ U, B  `, `! e- Gsetup-plot2

- X" H2 b4 }, U' {1 A/ Z0 {" l% u- y7 F. M& Q# T9 Y* ^
setup-plot3
+ n* ^! [2 r) i
end2 Y& q' g, Z, J- l! b: V7 }* \% L8 j

- E" K4 W# ?8 d4 z. d# s;;run time procedures; h" B  g/ p) A7 P
0 ~1 B1 p% Y3 S9 D# t) U
to go- Z, f0 U1 D* ~5 y" G- a

7 H! S1 d% A' g) Q9 aask turtles [do-business]

$ q/ ^0 Y- ^* U; A0 _/ F. b& Wend: q: S  k3 x. Y
. D8 e' [$ \* {1 e7 X9 a
to do-business
1 Y- e, _8 W# I
3 E& t/ n2 Z1 r# q
( i, b4 y+ ]/ i9 P4 t0 R+ X
rt random 360
. ~! ^  O- u+ @
* R: f& N# _1 W( n
fd 1

2 J4 I, W* N1 ^" ~0 z7 @2 b7 m+ m( G4 Z' @1 _" a
ifelse(other turtles-here != nobody)[
$ {( @8 h! J% D1 \& ]( h9 U% v' `2 `
  a( u& i4 x, H1 {  s3 P
set customer one-of other turtles-here

9 v( ^) d; O" D3 o
# t6 D4 G' [* |! M3 L;; set [customer] of customer myself

+ w) g8 y: A! P7 x* l& K; g& n) `. G* \) B9 v. U8 ~
set [trade-record-one] of self item (([who] of customer) - 1)
5 O7 H  }2 Y, C% _[trade-record-all]of self
6 u3 F; L$ U2 I3 g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) {; _/ e9 {: r0 E4 S

9 C; s: [0 L" a* ^5 \6 Gset [trade-record-one] of customer item (([who] of self) - 1)- D/ ~, d0 i: e: N0 f
[trade-record-all]of customer
- u) O: F& L4 ?% P8 V; ^
. \# C5 F- X$ D
set [trade-record-one-len] of self length [trade-record-one] of self

2 H( D1 l! o. @% c' q4 X1 r, }
% M; n' n. ]2 b" {8 z; p% {. d$ Sset trade-record-current( list (timer) (random money-upper-limit))
% X9 w# S9 _) M: z( d% b

; ^6 m) \& @/ hask self [do-trust]+ X7 v3 P3 P* k+ h) U
;;
先求ij的信任度
; Z- G" I. ^' _2 U0 ]7 g8 f7 U+ T* {% L5 C1 T- A& [
if ([trust-ok] of self)
; r6 l: p2 N( k4 y, l;;
根据ij的信任度来决定是否与j进行交易[
' u# x; H/ @( N  d  A/ `. w4 _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& R# T; }; D# o; ~% f% `" }* q
- K0 d5 ?+ e4 b1 W1 q5 H
[
6 i5 r  d( N2 E0 o7 O
) L$ V( r$ Y0 T4 b0 c& t# e1 S" P
do-trade

" g# F4 Q" h1 S' r# S- ?
8 s3 v4 o: n0 h! x! B0 @& supdate-credibility-ijl

. `+ n2 A, ?7 S/ d) F+ g$ E0 P  H# ]& v4 |- N" Y2 ]
update-credibility-list
8 D- V. }5 q0 u. _; E) y+ i

0 c7 H4 k8 {% \6 N- j5 \6 c
* g; u7 N" G. X$ ?$ k: K( ?) Gupdate-global-reputation-list

  `6 u7 }' t+ _1 J8 a( ~( S; d7 b: i7 R- m3 n; Y* i
poll-class

' V8 K( J: _  ^
. E9 D3 q7 ]+ aget-color

. W' V! A) [9 w' D2 V5 H
5 ^; b4 m  b! Y& @" L]]5 a! z* C) S/ o% O$ _. J

8 d; Y* ]6 P2 ?" Z;;
如果所得的信任度满足条件,则进行交易' b) w1 M$ u, n/ B; T
4 D* a7 p* Y; W# M! n. u1 m  O
[
# o  G, w0 {- s( G" X5 a3 _- _

# j9 }9 d* \2 W% C/ z% Yrt random 360
) f+ I4 b1 f, q8 ]8 A& a

1 p  n  S: t) r# D, w/ z+ h! pfd 1
8 S- d* f6 p! ^& I7 ~
+ O) ^9 I7 T9 c/ p7 K% v
]
4 n4 D- V* y! c  y
% I/ Z, H( q6 I) T
end
. W( H* g. L+ J- @2 Y! U

& b9 H; v9 m: ~0 ?3 ?6 k# gto do-trust
& K; M+ v. p/ D# Eset trust-ok False
/ d) O& R: n. g; x  a
# @, i/ v5 p1 |+ U

! ^" c! l. G* V& H+ Ilet max-trade-times 0" h9 O& N* [0 {
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 O5 }' b0 h; B. S- s5 a
let max-trade-money 0
2 |' G; k* d( n4 s7 bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; |: W: ]6 Q. H* tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))( V- l: U" t7 h7 G* B8 L

0 ]: Q! I. Z# c

* T9 j5 M, \& Kget-global-proportion$ V  \  i. m0 b( w
let trust-value
, V# ^( h, v, Q& zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
- F5 R9 @7 u$ G+ @" |! Q
if(trust-value > trade-trust-value)4 _" s# R& [3 X* p
[set trust-ok true]5 k( \. q- \# T
end; R6 k3 A. }: ^. Q! V' p# e

2 D5 t" i* S/ g3 h( W8 E. Ato get-global-proportion7 e$ B, N9 P; v( ~/ Y& N$ u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3), X- X  u2 S; C2 [0 i. d" u$ M& j
[set global-proportion 0]7 F8 s& ^$ H4 V0 _
[let i 00 x  Q2 f( ~% {( s  b# Y+ R
let sum-money 0
9 N$ m: r$ [; d- S- h* o1 @/ iwhile[ i < people]
9 j: r0 i( C7 e9 u[
& p# e. d, u+ m4 h$ t6 pif( length (item i
3 O8 ^& g0 F+ B[trade-record-all] of customer) > 3 )
4 A! t3 c  x* [
[
, P. G" Z5 h/ W# Dset sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 A( j1 M! p3 f$ P" z! e
]! t+ g& D2 x# A# x, ^) l9 i
]
' A$ U4 \+ R9 d. s1 x; C7 Tlet j 0
6 l2 ?8 J6 i7 \let note 0  L( ~: n, a' Z1 Q: U
while[ j < people]
  _$ D+ \% K" P, ~+ E, Y- m5 _[2 X: N1 I/ l/ B; u" W
if( length (item i
1 y' y# O. o0 e8 V[trade-record-all] of customer) > 3 )

7 D7 X) S$ b. W+ F, J[
$ Y8 I$ i4 `1 o1 kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), P! q' @1 e* L- k+ d- q/ b
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 i; b: V: h- ~# N8 h& c1 b
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 v) [. p0 O, W, s! ~9 t
]0 N- e$ q  R, a- z& V
]
1 u5 Y% L# \& N  U" S( |- Fset global-proportion note
& R- U& ]+ C, {: B; B( t" x* B6 B3 a]6 E+ d( w( s5 z' s( H3 P" P: @
end
* [* c( a+ ^8 ~5 D- B+ `
" M2 ?, Z$ K5 ]3 \0 b7 J- [to do-trade" f9 a4 w5 W4 C
;;
这个过程实际上是给双方作出评价的过程
' g1 y' F  `) t3 hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价* J& u/ f6 W- e9 G/ @# F8 U5 J
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' k$ m% S8 T7 D0 G4 p2 iset trade-record-current lput(timer) trade-record-current( x- j, b, f, ~! \  H/ J) a8 U" }
;;
评价时间
! j8 ^; U. f8 d, D( l& Eask myself [
0 e# @8 k$ s# N- Zupdate-local-reputation
$ P1 k0 d: A+ jset trade-record-current lput([local-reputation] of myself) trade-record-current) H' s  P9 ~/ C9 g. w% ?
]$ B2 L9 v) x3 T3 g: e1 z, w
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself, \' F1 U% r  p+ Z
;;
将此次交易的记录加入到trade-record-one" l6 X! |' E( F" e& u/ J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 i* W+ z& g5 s/ T; e% xlet note (item 2 trade-record-current )
# v5 g$ ~/ u5 Z" @& r8 z7 K# i/ Xset trade-record-current
- G* B& N( @: ^(replace-item 2 trade-record-current (item 3 trade-record-current))

) h# j" }8 H1 b5 Z5 I! `2 Gset trade-record-current& t' o4 x' U. Q8 K% q
(replace-item 3 trade-record-current note)9 S; r' x$ Q; t1 W, ^  A
' ]3 a% ^; X8 T

( g/ E; D* I% W; }! Z* q. J* U; T: ?ask customer [6 s/ W3 G! X+ F% c. S# S& l
update-local-reputation, @( ~& D; q2 c3 S; ^: _
set trade-record-current! |8 E- v& g9 c) a( b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. @" \7 }0 _2 C$ V" V# t]& s) P1 w1 j% Y& G, H1 W& d( Q

8 q" c. y# b  P
; s* z. r9 D/ h% H/ Q; w9 j9 L  Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
% o% \" Z& {* N% n. G5 h3 g

/ T  ?; y9 o; f% A( Mset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ ~2 {/ P" K! e
;;
将此次交易的记录加入到customertrade-record-all/ X( g/ W3 n* y4 y: ?- [- c8 h: v
end
. w4 e$ x, l" R5 P" [. D/ Y3 a, h1 X' _. b" R
to update-local-reputation
: H) k; W# m3 r6 d1 Q. B* _% k3 Yset [trade-record-one-len] of myself length [trade-record-one] of myself
: C2 T& Z( s7 O: f4 Q: E7 Y9 h' a: b1 [- m3 \8 O* `+ {+ r

0 C+ v. w( Y" z1 Q' Y;;if [trade-record-one-len] of myself > 3
/ U8 D) i( }1 |+ j4 }. `2 x
update-neighbor-total& Z- O; w9 b& O4 t( N# E) b
;;
更新邻居节点的数目,在此进行
2 O6 o, O. I! M. x# klet i 3
" ~6 l3 h6 _  d/ k- ?let sum-time 0
* E9 d- k; t& ^while[i < [trade-record-one-len] of myself]
' k# g6 M3 j5 e5 H3 k+ @[
8 H5 |! b: V3 Y$ E  {1 ?8 E2 U4 Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
% z3 S5 G1 k6 qset i9 j! r& o* B7 L* K+ B- X+ }
( i + 1)

; s0 c4 r  g5 C9 V]9 s" }6 i+ }( d$ R0 C3 H* }
let j 3" z7 a& ~4 R+ D- E4 j) U7 O- }
let sum-money 0
& D8 T) D' T$ E1 Z. pwhile[j < [trade-record-one-len] of myself]
- L/ L( M! [( C: s[
/ n  `/ N" u: K& bset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
0 k/ ]( {9 {/ A  A. n* X: }+ aset j3 I! ]1 f/ u+ W2 M! F
( j + 1)

6 R2 ~4 k7 z+ h; I' `6 G/ F. i]6 i! }2 n* ~/ i9 @# {
let k 3
% u7 N! k- I, Y$ clet power 0* f- z, h3 [( \6 J$ S" r4 m
let local 0
7 L) Q! [9 z8 p& C) b4 cwhile [k <[trade-record-one-len] of myself]* C* J( V/ S+ @+ L# t8 h( I: p3 i9 L' l
[& N; R( Z5 z" v
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)
4 J) v6 @( p& `# `" zset k (k + 1)
: R3 b( u2 C- s]
5 {1 c, Y0 {! d/ J. Nset [local-reputation] of myself (local)7 c# x! b' z; \& m! X, W- W% t% X
end
) F4 Z8 {1 u9 t8 i+ `) {
7 t, m! n. ^' O( \: ^* dto update-neighbor-total
1 e+ z9 Y* l, S8 U$ @) W/ t$ Q8 u! v2 E2 K; y6 |! [- @7 ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 X0 d* y' \0 P1 v1 I5 U1 T$ x
1 L- B9 |9 u7 H4 i! i8 G

% e2 a/ |6 o8 f, Uend" V. W4 z7 h% _; l9 s, H% S

: K) U4 `$ E4 V$ s7 `7 a# ?- Ito update-credibility-ijl
  `- U" p! u, d, F
( t; J* X2 k% F6 B;;
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。5 e8 K8 I* f; {$ c- W" y
let l 0, M, V) X% `" Y. f5 ^  n
while[ l < people ]; `5 O5 n5 y, }; h/ Z
;;
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
' c: e" ^6 Z. b6 O0 N[2 d9 q$ B5 g, E9 ^' P
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)- |& d5 c# k; q$ ^3 ~9 @
if (trade-record-one-j-l-len > 3)
% m* l# l% K2 ~! \1 n& h/ O9 `& 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
. t; O: N1 ~8 ?let i 3# G& W3 B# B, Y. C
let sum-time 0* _" w' h0 U' {- r- g
while[i < trade-record-one-len]
) @( Y6 p: l5 }1 Z9 x% ~8 S  `+ y: Q[
# v; S0 ]' E' D1 z, dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
/ @; ~! y% f- N$ Bset i
; h0 t1 _8 t7 r$ K  c* o) z( i + 1)
- @: H( J: u0 n3 r) t. d
]
- h3 P% d4 ~8 m" vlet credibility-i-j-l 0' x7 q8 V. c( K+ \' H' A
;;i
评价(jjl的评价)& ^  o% \/ m3 `0 V2 T. h
let j 3
1 b4 c! }, d7 B8 Qlet k 4
  D3 }5 ^2 `3 ~' `. |# Z3 l  i7 Zwhile[j < trade-record-one-len]
3 t. ^; T; ]8 h, X+ R) q  J[
; g. S* i4 D, {: g# X2 F, K$ U7 mwhile [((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: Q( W5 i& B: h7 T& G) A7 @1 K8 g
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)
( J# {+ o9 X6 b$ e/ i+ i: gset j
( z, h  ~; @& ]8 H; J5 y6 `' Q4 ~% q( j + 1)

* a/ P: z6 i; l) B) ?8 r3 L# ~5 t' K]
9 v' ?; W8 j; c' d" v( B4 nset [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 )): a" s) ^* \) _+ M+ ~' m
  ]& |- T* g' z1 l1 v" x* S

( T6 g3 o4 @" s% klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 E8 [+ e2 m1 F, G;;
及时更新il的评价质量的评价
5 v- [+ D  ~$ o7 Z& e3 sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ c* e. H# \( d$ K" K! zset l (l + 1)5 a% G4 I$ |+ ]
]
* v: J, O9 K9 M$ C/ Wend
* K! \$ A) ~+ i- \, h% L7 F4 S% |( g& }
to update-credibility-list6 t, x2 B) Z3 h/ ?6 p! b" R5 G" M
let i 0
9 l  U. {2 _% }2 k9 R) Vwhile[i < people]
4 Z$ T) w/ i5 M, u# }& X[
. }7 n9 a) l, Z+ Qlet j 0
4 E$ a# U( U8 m9 X' }- Nlet note 0
' U' t3 C* t! z8 Q, Q: w4 Tlet k 0+ z) H% G7 Q) Z8 M4 t
;;
计作出过评价的邻居节点的数目$ g2 U& ~3 H5 K6 v( J) g$ s
while[j < people]
3 a+ P8 x& V% }- \$ C[
. M7 `) X$ v3 i( dif (item j( [credibility] of turtle (i + 1)) != -1)
+ G' A2 K; }  @) B;;
判断是否给本turtle的评价质量做出过评价的节点
+ W* S8 [4 u4 R[set note (note + item j ([credibility]of turtle (i + 1)))4 P( [3 _# z8 q, p; X% g
;;*(exp (-(people - 2)))/(people - 2))]
6 z5 }. C+ U% o+ K+ F$ w% e
set k (k + 1)0 F7 V- R* g2 P2 G8 M6 k
]6 [: z4 g+ a7 ]3 E+ b
set j (j + 1)
0 d* r6 p, A9 ]# d' q" l]
, l  _5 s" [! ~+ p1 \0 oset note (note *(exp (- (1 / k)))/ k)* c9 q8 G" G+ a  Q8 Q) {0 c; l2 z
set credibility-list (replace-item i credibility-list note)
; Q% U! q! o; p% K5 O) {set i (i + 1)
/ V5 N* X  w5 f) c]8 n, F  o$ K8 Y9 B- W
end. b2 W6 ]/ ~1 K. Q& h, L5 ~$ r: k
, p% I) J  j! V1 r$ b
to update-global-reputation-list6 F% L7 I" @' V2 x3 n8 f
let j 0
6 X8 S8 z: M% ?/ U: d! k: @while[j < people]1 g  N. [( B. J' w
[
# f7 W' j0 M; Blet new 0
: P) v" |/ ]: ?7 ?+ i, z; Z;;
暂存新的一个全局声誉. o8 a8 s9 }* m! f# M! F" o* e
let i 0
: x! ~$ \. [$ ^% v2 }let sum-money 0+ {" R3 [2 m% \; d; [# Y
let credibility-money 0
- O6 \; K' M* a  |& Iwhile [i < people]$ [! I; M# z2 |0 b/ {
[
8 O$ ~. J& ?/ ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 x- B! z# ^1 ^3 N7 M; zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  j5 l2 l: e* s; X2 W9 ?8 Iset i (i + 1)
: Y9 V$ q" M( U6 S! B  M8 Q]
  q4 N4 C! @( S9 Q/ `3 mlet k 0, S3 Z% ^" a' j% h  k5 z
let new1 07 a+ y2 M& y. X5 J+ v9 e
while [k < people]6 H: N  J- g6 m9 r7 ^* v5 G5 s
[1 p5 ~: @3 u* w* Q4 T2 L3 [( U# Y- 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)+ s  R( r/ ?9 p7 x  V
set k (k + 1)
( s) E- l( ]/ _5 D]2 w" S2 u1 b9 m; j% l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ Q- S3 B0 v% t: ], e: ]# H. Xset global-reputation-list (replace-item j global-reputation-list new)
5 M, d: ?( z6 Y" o  W" U$ xset j (j + 1)0 E  ?( w4 ~* F8 H' \
]0 Z, t) \! T3 l4 o4 e  c# S# `' q
end: h* d2 K) q; S& Y$ R

4 T( _% Z5 {  m2 M7 H4 R  P+ n: A( C5 r$ `1 \4 w' {- s* {
" T' _6 i; ~% |1 ]# d2 `- ^, K
to get-color
' g- W+ l- E5 h; u+ d- T. o2 Z$ B9 r  Q. u
set color blue

/ a  T  t7 [8 K! y' B6 v5 qend
! R. H* H1 i7 l+ w
# M* o, O6 B, y# Yto poll-class. `. }4 [5 S. O1 z6 B
end# r* V% {( ^, o  Y. {2 m: Z
, m( }) w8 }7 B' P+ @) ^
to setup-plot1+ N8 Q* k/ u1 ]+ u. N" O) X( Q% @$ ?
" e1 I- {# o: z5 J) P
set-current-plot "Trends-of-Local-reputation"
' j6 Y6 l1 K8 V8 E& ?5 K
$ D1 D% m7 }( s
set-plot-x-range 0 xmax
7 C. p7 D2 X: f+ F' O( ^7 T
) v8 c2 }* I# R0 k5 D/ {2 J
set-plot-y-range 0.0 ymax

: H; U  T; e8 {! @end$ h) \7 W# r4 L
6 S/ M+ t$ R  O* q7 t! O/ |
to setup-plot2( r% X) a) t: p. T9 Q

" I4 i. C8 r) Y; x+ H8 c9 p4 X, Dset-current-plot "Trends-of-global-reputation"
9 W/ g! u: ^8 s; h
( ^! _& B, Z- T" n' N. p, e  Z% Y
set-plot-x-range 0 xmax
! m4 m# S4 D4 ?6 C3 l/ g* ]
0 x; a- q9 s% {2 L' v
set-plot-y-range 0.0 ymax
, f) {& j- H1 |1 t/ ~& q5 M
end
  ~$ Z4 w, J: v* p- w, \3 W% Y/ D5 R3 X+ R) C; d
to setup-plot3
  \* _/ ]* P, K. w1 i
# I" c( Q- }. U9 `; X5 R% i  }$ xset-current-plot "Trends-of-credibility"
) K$ b. B. a. r9 u$ m4 |

. P+ `6 m1 n1 v( W, T; X5 Iset-plot-x-range 0 xmax

; R, C* q, `9 t+ Q9 b' U& ]
# p9 ?! j7 V2 E, Y% V/ v3 d. Vset-plot-y-range 0.0 ymax
0 ~* o; t9 l1 z$ Z( a& ~% l
end
4 [3 p" }0 f# ~* }
9 G$ p. ~8 ?. t8 f& k0 Zto do-plots
- Z) n% \. }* h" W: W1 b! K3 Q: n# oset-current-plot "Trends-of-Local-reputation"
' Z) J! w1 R& \8 R9 z% @7 Zset-current-plot-pen "Honest service"
" W! @7 \  |. f7 B; j" P; [end' O: R+ d- Q, c% T4 F
, |! u' g9 q; g' j: V
[ 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.- ^6 i5 x+ F: C6 r; Q- M' V
- d: q, S5 S" o
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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