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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:
. t. p+ q. W3 C) mto do-business ) l' \5 d. W0 s  [5 I, f
rt random 360
: r& _2 x7 a# P  A9 C; G* K! ? fd 1. L* ^0 L( J( j5 E4 T* |
ifelse(other turtles-here != nobody)[
5 P) _7 R2 \% X   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.
/ O# Z# V% Q8 ~+ O( V; _4 \   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    % u; w5 B2 [6 D; N9 G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer( z6 a0 ^! t& b" M8 |0 S0 J
   set [trade-record-one-len] of self length [trade-record-one] of self
0 e& x2 |0 t1 G$ Z( x' m: ~, `  C+ Q   set trade-record-current( list (timer) (random money-upper-limit))
1 H7 L0 G! P# ~0 X% {8 r: z
, E! ^6 ]: H% ^# {: i2 L/ d9 \问题的提示如下:
& R; \5 N& O2 h& Z+ a7 I0 m3 A* A: w: S  m6 X  o
error while turtle 50 running OF in procedure DO-BUSINESS
4 M5 s# W* {- L8 B  called by procedure GO3 N8 s. r3 m5 a3 H6 D) v0 }) X  L3 G
OF expected input to be a turtle agentset or turtle but got NOBODY instead.; B5 N% {/ s( F% _
(halted running of go)# t3 m1 Q1 u8 }
" J( D7 l1 M- i' D2 d# I
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~~
' ]( d+ j6 S4 [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
( S8 g: w& A4 F8 J/ A- Z) u# D; {! Lglobals[3 X" N+ R) x: q2 _& J( P
xmax
$ Z$ Y! G7 I& f) \: R& l8 Vymax
# Y6 k9 G1 z& L: ~0 z5 n6 h7 m% wglobal-reputation-list* X, N/ B% `* z* `) i$ q: r. m
  h# @1 A* i! u8 e
;;
每一个turtle的全局声誉都存在此LIST
4 g" b) o, r8 t: D( Vcredibility-list: `* p) s4 T! _+ _- w$ y
;;
每一个turtle的评价可信度# g6 E! W, A$ @) p
honest-service+ ?/ v1 f4 f7 p  \8 y# ^3 @* ~
unhonest-service
  v# E9 ]' t5 ?8 \! n/ ~oscillation
9 m1 \- M5 w, y6 ^6 G' l; z- H- Krand-dynamic
! |; ]! d0 q% t8 o]
5 q9 J; d4 r- K/ d7 `: U! c5 O4 S% h" E% b( U
turtles-own[
6 f; S* j) R5 k3 R0 y9 C: u" Ptrade-record-all2 u3 |* k; [6 P+ O& i+ l# q
;;a list of lists,
trade-record-one组成
; N% B- j1 J7 B* }+ b  d" Ttrade-record-one, n- G, }8 X; S
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 M/ E* t7 C, b# C
' g4 t. ?4 h. {; m) F$ U( P;;[
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]]
& C5 O; r3 x* g8 gtrade-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]0 y, D' N4 a2 Y0 k- |7 F0 [
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list( c9 Z) O4 \+ v& l3 ?; I
neighbor-total
+ s  j2 g/ r9 U( }$ a; R;;
记录该turtle的邻居节点的数目8 O' G* R# G/ E' j' ^$ f2 z
trade-time
9 d, J* w( _* S" A: E! U+ W;;
当前发生交易的turtle的交易时间
$ d& Z% F+ |$ y" b3 b6 [% W6 Y% Dappraise-give! Z* w+ K* U) M  }8 Q' a8 f
;;
当前发生交易时给出的评价
& `+ {! Z6 U# c- {& w( Qappraise-receive5 v4 R) ~, ?. M4 f% L7 _8 r& A+ ~8 _
;;
当前发生交易时收到的评价2 ?$ Y* ^. T+ V* k/ V2 E" O/ o& P" ?
appraise-time3 C3 l% w# M/ p! D
;;
当前发生交易时的评价时间2 l! ]+ Z& ^8 ?5 r, j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! J$ |: K3 `9 r5 E8 D3 ]1 n
trade-times-total3 O3 T+ M3 a. B; a7 V
;;
与当前turtle的交易总次数
$ ^. R" q1 B, E( F* ?0 e  Rtrade-money-total. I* V' P6 s2 ?) m
;;
与当前turtle的交易总金额' s/ \9 s* t) Y' T& q+ v. r7 n6 ~% L
local-reputation+ R  j- Z) ]+ k3 Q7 n/ k& a. a- R
global-reputation9 p) R; p( f/ l0 M& D' s
credibility
# _" |# Q, D6 L' E, d;;
评价可信度,每次交易后都需要更新
/ N; ?  ]7 k* o) ^7 u: M/ Lcredibility-all
. e* O0 @2 a9 n, ~2 p3 N;;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
* e7 t( `- b6 ?) M+ C( L5 p- o$ O7 p- Y( ?* q4 R% T
;;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  C* H7 J2 _& w7 f- p5 g$ J' [& ]5 z
credibility-one6 e% k+ K: x) ?/ n' B/ c4 _" O
;;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
$ }' ~" e) }( R. b7 H5 }global-proportion; E, Z3 R  z, u9 C  u% H2 \9 j" A) ]
customer
6 e2 U. z7 @2 F6 c( Kcustomer-no2 D4 X$ b: ]% N- _7 r9 ?0 Q( L
trust-ok& \1 z  R$ `) r, F0 g# B. {
trade-record-one-len;;trade-record-one的长度% G0 [# v- G0 a' Y/ E5 v
]. D- ^! |/ c+ m" |
" |  L; D$ p' @4 d
;;setup procedure
# I* Q( B; D# @2 J7 o- T7 j6 J% T  S# e! p( k6 W9 M9 `% z$ I, [; P; }
to setup
5 R4 z) n$ x# y7 @6 _- n: E- i( R4 e
4 i6 c2 X5 r, U# Pca
  T6 a) X" u0 r

! _# N  [$ l  q- ^# i$ x: V) \initialize-settings
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6 j5 \# X/ a4 S$ P' @
crt people [setup-turtles]

4 U9 r7 @' ?6 }
5 y7 m, e" }% ]9 ~reset-timer
/ H5 F. J  O* {
" \9 ~5 y! {3 R" T9 n' C
poll-class

3 r- z! ]) K1 C9 s% Z) |5 S
/ u" n: T3 h2 P7 \( Esetup-plots

9 b5 _4 S; t" c7 x. }
- I( {8 }# V/ n# odo-plots

% {2 x0 A/ K3 u% Eend
5 _* O6 o, ?* P
; j: N; {5 Z* m% cto initialize-settings
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  K& C8 Z$ _. D+ r; M" n1 Cset global-reputation-list []

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set credibility-list n-values people [0.5]

: Q# c$ h+ a& w8 V" ]: C& X4 z' ?1 q
set honest-service 0

8 Z- |2 r5 E8 X7 _* t% W8 T/ L! k" g: J  I" w* Y0 a4 ]2 ^4 I
set unhonest-service 0

2 ]6 M8 p0 N# M" u
& x' k1 b4 z" b/ O& D+ pset oscillation 0

- _3 t- S" Z& j- D) o' H+ n; N' \5 ^4 @/ \8 m
set rand-dynamic 0
% D/ i% s3 R+ r2 C2 K6 r
end9 p0 v5 t" h& D

+ S# j% |; b+ R6 {$ ^2 {to setup-turtles . J0 }' i' Y& ]
set shape "person"3 @8 ~4 n& \7 P$ ]6 _
setxy random-xcor random-ycor3 B- _; m( w4 _8 @
set trade-record-one []
1 m% z/ `& t. |% h3 R; n

/ t" d0 s/ `1 t/ oset trade-record-all n-values people [(list (? + 1) 0 0)]
* a/ g; X; t/ N2 K9 s4 v

5 u. A/ e6 ]$ t: pset trade-record-current []3 `4 t6 X2 H/ v  d) M, p8 x/ |
set credibility-receive []
) P3 J! {4 _' W' u9 `set local-reputation 0.5
$ O& _" `* K) @# }# l0 jset neighbor-total 0! T' h: \/ s2 N$ x
set trade-times-total 0
- J0 \. F1 z1 W- o+ t* Yset trade-money-total 0% l1 ^6 N0 ?# h, @7 j
set customer nobody
/ ?6 Z; ~: U2 p% U$ Rset credibility-all n-values people [creat-credibility]
6 c" B' T) _" F+ ]+ Wset credibility n-values people [-1]
0 K2 {' m- [) ^' V2 y. |1 v3 }get-color
8 `2 O$ Q. E7 R3 _( M7 ]- X0 S
( d0 f/ h; R; H, L0 T
end4 z+ X* z% k/ k+ E/ {- j" U' ?( w

9 k$ H1 x8 V, |, ?" ~3 Wto-report creat-credibility
# ~  i1 P( [1 u" ]& f1 I) b: kreport n-values people [0.5]2 z! q8 P7 ]" I. {6 p7 {5 }
end
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to setup-plots
2 f0 s% q) W7 C$ ~9 o% n6 }+ L, ?  }: @; D  w* Z* d+ n/ O
set xmax 30

% U# w2 e/ T( k/ D2 T7 O/ U
( P0 Y' \3 y" q1 \7 C1 I% f, {set ymax 1.0
6 G7 @# p  D7 `
% u2 p# B& N& F  X/ x5 E
clear-all-plots
/ L& n8 |* N$ \8 I
! X1 B7 c8 l% d, _5 a7 ~" }
setup-plot1
- N+ }$ Y" z$ g& d; D8 _* }
% H! p0 \7 n* J! @& J' h' }
setup-plot2

3 U% e9 d# l6 l% O! U! v; z" N' t' _
setup-plot3
: ~: M2 _' B- i
end
# g8 Z2 y( J1 X9 A9 j, N7 v: F
5 [' S* i* {: q& [;;run time procedures
7 M1 H: ]3 [3 M: ?+ d& f7 u, u& d# o# U& z) A) I- V
to go
& R$ V5 b. {0 k* J! H* B" s7 C( l1 Y) e3 f( T5 x- `6 p0 a7 u
ask turtles [do-business]
# O9 U0 }: }5 y" a. f# x- X
end0 X, B+ t5 G1 ?+ |& q& |
+ I+ Z" J' ~5 G& V9 l% a
to do-business # a) e7 {% x) L5 m, |9 K" h1 G; Y
! A* a5 a, T- p6 j& U
1 z, w1 a; e, ]5 A  i
rt random 360
2 \# j1 m, V' G: c; r

3 ~( s! y- @0 e( ~2 Ifd 1
9 q0 }; ]+ G8 _; G
$ \0 I' V* ^9 G
ifelse(other turtles-here != nobody)[

" B$ L6 h' J1 i  L3 r+ l6 H
; C, f$ t8 b) b  K# Z) ^set customer one-of other turtles-here
, V2 W% p" R# F( K: F4 `

* l7 _+ K' r* [;; set [customer] of customer myself

7 X. I4 J/ G5 k& s; x; i) d1 N6 l( \, e5 g! k8 M) I% \
set [trade-record-one] of self item (([who] of customer) - 1)# r  i1 |' T3 T/ m$ `! r* }
[trade-record-all]of self
% J, F3 q4 I3 i7 `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: S2 X& ]9 ]; F" ^
- i: Q6 P' ?. B# r  w
set [trade-record-one] of customer item (([who] of self) - 1)* l8 u0 S7 k5 s, t( s- Q
[trade-record-all]of customer
- e# e2 m% F1 ]7 `& C* j( V5 Q3 t
+ F) y! ^. b9 g: B# C! W
set [trade-record-one-len] of self length [trade-record-one] of self

' ]5 y. ^$ ?- N- R* r3 D* U5 d3 S$ c
set trade-record-current( list (timer) (random money-upper-limit))
6 S  B/ C5 H8 }; @5 Q! Y
! Y$ h) j0 g6 ~4 v
ask self [do-trust]
" B2 a1 P, p- W;;
先求ij的信任度
9 ]* ^+ B: ^9 u& B2 T/ I2 k1 B- ]! q/ T- J
if ([trust-ok] of self)
/ d: O1 d9 A0 j5 t2 j, @;;
根据ij的信任度来决定是否与j进行交易[6 }. n" D# u' }6 D8 Q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 P: ^& _8 P- y9 b; _) b4 Z/ i
3 |% _- v: r8 l7 j, [: K6 y! \; l
[
9 {. z1 p$ c$ n; |
1 P; l4 A( F5 P3 q( I% ~
do-trade
. L4 ^0 c9 [# ?. ^/ W1 C

& F0 Z* m. @3 ~4 qupdate-credibility-ijl
6 d0 U, ^. O: {" W9 v% w+ _- s
# x4 K$ r" B9 _) F* t' v
update-credibility-list+ W5 ?: e5 \4 C0 i, {! m- Y1 E

  K; G- a, z! \% t9 ^0 ]; y$ v  K& W" r# h7 o  L& i) ^) N7 Q' t
update-global-reputation-list

, r( j+ A7 M2 Q4 j+ M1 m
  {8 B. a9 h& l: x: Ppoll-class
: N" A6 F+ l6 ?# n$ q9 ~

6 K2 N. ~' }0 Y  M( vget-color

0 ]! e8 T) P4 Q3 ?* J1 e
7 k2 `  a" Z$ C/ f# S]]0 d# g% G7 _0 \5 b3 L3 T

3 c* P; B* H, R1 _, ?3 O;;
如果所得的信任度满足条件,则进行交易
& q: y% X6 t7 @7 }9 p6 `3 |7 e9 `& l0 M5 X( ?: @
[
* T8 D( b. p* L9 L' e0 B
" G: Y- ^8 |% h5 ^: o5 z6 K4 a
rt random 360
. y- `1 X3 `" u  P' t. p' k

! f7 V5 C: g6 kfd 1
. |; W9 Q7 s; Z, v( h) e5 M

* ~" p" n- p; S# P' `  }]
! I  S9 _8 ]3 [! x9 v
2 ?% a" ~' x" S" C+ t& X: y3 t4 r' y
end

; ], g' c! v. ^( U) u* V3 `3 |2 g; a0 [; D& k
to do-trust
# p# w! D- r6 ~set trust-ok False
. b! s- @( i  S2 }! B- ^9 ~! I: ]
: `8 `, S7 Z; r! g! b" o$ l

) |& p+ f# c1 o* h- G/ Rlet max-trade-times 0
$ a- `8 _. B" ^foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 @% V$ F. V+ S- t7 j9 ?. ]& P
let max-trade-money 04 d% H& G( Y4 g' t- e
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- a" y8 H# b- @/ _2 _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 a7 U( {. ]% l" t; j% h
- P) s5 ]5 I( ?0 `

& k5 ~2 g) E5 eget-global-proportion6 I+ A5 K. f& n( D5 w1 z0 M& {9 Q2 D
let trust-value& B  n& G* v3 p; m
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)
/ {; K& H( f+ Q/ o0 B; \8 q
if(trust-value > trade-trust-value)
& g7 S$ d9 q' Z/ |' G[set trust-ok true]+ V' g& {( R2 k
end! I- s& [# ?: W% S. Z8 V* ^! v
. K2 e" b, `* U& C+ Q: f
to get-global-proportion
: W' V7 |+ H( qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
, E  U$ D; a9 u[set global-proportion 0]& ^! E, `1 h1 ^& D+ t
[let i 0+ Z8 X7 B( |+ f9 Z
let sum-money 0" ~1 I- Q- X3 [! R4 b
while[ i < people]# s. E1 d! R% `+ v1 d
[
8 r  G5 P9 |' `  t6 l. dif( length (item i
$ E; \/ u7 j. |0 ~* {/ S3 P! n' `[trade-record-all] of customer) > 3 )
- D, n$ W* P& v( ~6 m% I
[( m0 g2 c- r5 J- |# d3 J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- Q$ @9 R8 Q+ w5 s0 W- G]) @2 x( E- @# r; \) |6 R( c6 |2 _
]
2 B, z% E8 c) |- c* ^9 dlet j 0
/ Z3 i# ]) @# j6 ?9 k+ G* Plet note 03 v  ^8 y2 V0 _4 P
while[ j < people]
1 z$ w( I* Z* \: w6 _8 Q& K) e9 C[( b1 r7 k1 o9 q4 d
if( length (item i
# f! V& r  e' @; K9 [+ w[trade-record-all] of customer) > 3 )

6 l5 V% P3 }8 G) H& ^1 _( X[' g+ u) V" r% T7 h9 r1 O
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* k" D5 d& Q+ E$ G1 P, a( c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 r/ g; E; L2 y  J! V1 {
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% [: P; x7 {* v9 W+ |( o]
/ h0 U* F0 _3 o- o7 }+ i1 y]3 m5 R6 m0 A+ t( w8 j7 s3 k' }
set global-proportion note
* b# |  B% ~+ T]
) B3 \1 d$ D1 i) _( s8 p' Kend% n% c) P7 [! ^
" Z3 @, e$ a" q; @, k3 B. O8 g0 o
to do-trade: K& K/ V( a( H/ Q0 k, M
;;
这个过程实际上是给双方作出评价的过程/ f. j& V1 P; S+ g2 I$ x- ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
- q  {/ R& u! p& ~* t1 ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 ~2 S' }0 K. V3 ]& Zset trade-record-current lput(timer) trade-record-current; ]5 ~1 ]- e7 @
;;
评价时间" N: [8 |# u4 Q/ F  d! ]
ask myself [
. _$ y; o: M/ h9 Lupdate-local-reputation  g) ]/ S" X, p7 q9 Y7 m
set trade-record-current lput([local-reputation] of myself) trade-record-current1 B1 z) P$ q' p+ b7 h- h4 r
]& U- Y" F8 P6 d9 B& `. {  y/ u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; y- O9 A# Q! h;;
将此次交易的记录加入到trade-record-one  v3 }1 v9 o. I* s9 S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)2 {+ k% A5 c" K: T5 c
let note (item 2 trade-record-current )
' Q) B+ k9 u# W$ i7 Iset trade-record-current1 M5 P% i0 k3 a) s  M, v) F
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 z) ?# ~: q9 F7 b0 E+ J2 Jset trade-record-current
: I. Y0 i# ?) i# v& G; O0 x% n(replace-item 3 trade-record-current note)
( [2 U' [; o% K2 ^- s
1 y$ v, y7 R  y5 W' i" F0 z) X0 M
" l& r5 l0 q/ ~$ k( ~  a: |* i
ask customer [
( o! H: P6 D4 l2 e1 Y2 m3 |# h) Pupdate-local-reputation7 j" N3 @) k! ^. h8 N4 c8 D
set trade-record-current
+ I- o2 y8 e0 R# O(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

; T- ~/ p. [0 c$ w3 r% L]
2 P8 u* J3 A4 l/ z+ B: q+ N' m- ?1 Z7 H0 l  {) U

: e( V( |* ^" s2 D* {$ s2 A4 ^9 E7 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ K4 b+ d# z6 a4 P  ?2 ~& z: S8 o/ Q

5 `- J6 k" _8 G- j8 V$ d# j" y  y& Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ U# f: \) [! k0 Q. v7 N, r. t;;
将此次交易的记录加入到customertrade-record-all
$ w: ^6 p$ I0 W: \1 W: N7 T; yend3 R9 A2 f3 I  F7 r9 v8 q: d; A

6 Y. C5 K$ p  e3 O8 W$ Q3 ^9 lto update-local-reputation# O7 N2 }+ e3 w
set [trade-record-one-len] of myself length [trade-record-one] of myself
. f7 g+ t* q" Z7 @0 k8 s+ N3 p% Z* L) U8 s2 T9 C. _
' L3 @% |& M: w) `4 I4 p- R& }6 c# x
;;if [trade-record-one-len] of myself > 3
  d4 ^  G+ \/ P- X0 }1 e
update-neighbor-total' _9 W7 z. [7 _# m: ^1 c0 T! h
;;
更新邻居节点的数目,在此进行  K* h; k2 f3 p& E" h
let i 3
% o* o) K; G# r6 W! B/ U* plet sum-time 0& r: o2 ?6 f0 l0 ?# |5 y
while[i < [trade-record-one-len] of myself]/ H: F$ h  D6 G; n) h3 p
[5 K) N; d" Z' D( r5 Y1 p
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 _5 X2 I! A* W6 L+ Yset i$ R( X4 b- C4 X4 ~  j
( i + 1)
8 b' u& _% T( G" m- |
]
3 R9 I7 A; R3 e/ y0 X, \7 ]let j 3: p5 e* u0 ~! a  f
let sum-money 0
4 z2 h: g# c  v* D0 n& Z0 S/ Wwhile[j < [trade-record-one-len] of myself]) V, i* u+ l1 O. v( k
[
) }5 E' v3 b6 o9 M+ p; Uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
5 @1 m4 c0 ]' m- i$ dset j# h0 G/ H. z# I1 M( y( q( b
( j + 1)
% y, `. f* ?( x7 h. M
]
) h+ u8 c- o0 {- Q8 T" ^let k 35 E+ D/ G: J; Y: ?7 A2 `& q
let power 0
  @. P* x# k! X$ h* S. j1 zlet local 0
" ]% l4 G% E9 y) Awhile [k <[trade-record-one-len] of myself]; M/ r3 R* z( r) F3 O
[9 b( K  c5 B; o- @& X" c# {! U
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)
7 Z1 f& P4 J' Y/ u+ W3 p$ D( A4 Dset k (k + 1)
+ f% A7 q/ ?0 p]
. p* ]" p: `9 a4 z8 O, p% lset [local-reputation] of myself (local)
' h% V4 b5 a9 _" z8 kend
$ l3 _( a% d% }8 n( o$ @! {; y+ I0 b$ \3 Y6 G
to update-neighbor-total0 Y9 q  j4 F! e8 U: p  D( V
( @, ~- P" O8 f% h% A
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
7 B$ G: X) N: @$ ~7 |+ y8 v0 z/ u( N. o9 t
1 g5 b  A% d7 [- C$ v3 k
end' f0 f/ f: B5 w4 {
7 _" N( ~! z$ F
to update-credibility-ijl , V. B8 b, H; ]& d+ K2 `2 |- n
$ ~% J+ N0 q: 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。
, {1 e4 O) A# d) R% {& Qlet l 0
' W# t& z& t0 h$ P8 mwhile[ l < people ]. Q7 D: W% Z. j1 p0 F
;;
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; O, o4 Q( {3 O1 R4 K
[3 R5 L3 S+ o) D: p5 D! B6 V
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, Q5 J' m7 T/ h/ I/ F$ dif (trade-record-one-j-l-len > 3)
" D$ n: D# c0 R( ?: p6 ][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. q5 y: d/ V0 t
let i 3
, P/ {/ l2 y' e) J' u8 Qlet sum-time 0
/ n. [9 O; ?2 I+ gwhile[i < trade-record-one-len]( C0 e/ k4 }& _
[
& Z2 U; l: w( F4 h1 M- s0 oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( m: F; `0 B% ]2 g, g4 Q
set i
* O* e3 B' @; B6 K( i + 1)
/ @5 y/ K) v3 W) u( p
]$ h. ]4 {2 _3 W0 `; S
let credibility-i-j-l 0
; N9 I$ s  o% \* ^4 E+ F1 T# Z: W' f+ [& Q;;i
评价(jjl的评价)
  a% N6 Q0 U# R/ p3 Slet j 3
+ X$ L! M* k, f6 |+ Vlet k 4
. m) M' t& F) p: jwhile[j < trade-record-one-len]
; d- L& V- ?9 Y/ `$ j& m0 i  x: \[! s* u& @" ]/ [8 C3 G4 C
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
& w+ R* M. s) R0 Cset 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)
* E0 S2 V$ x% Q. A* [* ]6 ]6 L% w3 ]  tset j
  Q# j( J: f8 ^- {# W. I- y% ]( j + 1)
7 @7 L4 E' U" b4 u
]- I! e! w0 k! X- p" w& u1 U2 X
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 ))
6 w, s( q2 ~) \1 m  P# V- e
. q! N' ^! f% k" j
: Q. v% d" [. ]2 N0 {0 O1 D* N, W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 `- d( l3 q3 A, C0 L5 G' d9 M1 p;;
及时更新il的评价质量的评价
, q) W  j" ?8 X; {; tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! x% y" t! ^1 t4 A
set l (l + 1)
- K6 P' M$ v0 {' O) O5 K' y+ m]
6 f. B0 ~& g; i/ w9 j9 pend" N/ f: i6 k0 }1 M
* I8 c. [1 p5 i" i& Z$ Z
to update-credibility-list2 u. N: I" [: |, {: i6 s( y5 s+ y
let i 0, {6 {: i8 R$ A; M0 f
while[i < people]9 G- U1 o  t" V6 W4 b
[
" @/ w6 |3 \. Dlet j 0
& o) Q! g/ h# t( a2 @let note 0
  d2 X7 S. w$ t+ z( O0 _let k 0
2 I5 r0 P$ _% {1 ?! g2 O1 a$ o;;
计作出过评价的邻居节点的数目
2 j  [( [( l; J. ~) G, O( Fwhile[j < people]  M- s% V  p+ c- x4 c' p1 o1 `
[
' `3 L! n5 W: B2 Zif (item j( [credibility] of turtle (i + 1)) != -1), a% N6 T& h) d
;;
判断是否给本turtle的评价质量做出过评价的节点& e0 k2 |7 q( h$ j
[set note (note + item j ([credibility]of turtle (i + 1)))2 L2 K' P( O+ _# I4 K# F3 E9 }
;;*(exp (-(people - 2)))/(people - 2))]

- U* T7 {  f7 M1 Tset k (k + 1)
, n8 o' {3 S. j6 i! ~! H]
7 s: [  n( s- U7 U/ V3 c! p' Yset j (j + 1)- j* _! `: i  b5 y) g1 a' ?
]
6 p5 [( C& T4 v% w/ y" nset note (note *(exp (- (1 / k)))/ k)
9 g; ^- S7 |$ g3 j5 o3 Xset credibility-list (replace-item i credibility-list note)3 d& c4 c# L* h. }, }5 Q
set i (i + 1)
0 f5 q1 P0 R$ s$ Y]
# O3 \; G0 \4 G7 D6 {' R# f' Gend) _0 o9 V) [" Y  b1 P8 E

0 Y; `) g8 r% b2 sto update-global-reputation-list. x0 _  P  A7 ^2 K
let j 0
5 i  q# Q# o8 Y# W. rwhile[j < people]$ E' A0 F! g, n# c
[. T) m9 [: a2 w4 @: a9 r5 F
let new 0% F9 B2 [, m3 A4 C
;;
暂存新的一个全局声誉
* ~9 I. g. J" {) ^- W8 }let i 00 G" j3 y7 n. `/ r1 R. O
let sum-money 0
9 c, F8 \; a2 Clet credibility-money 0
' w4 D! _: N6 _) F9 ^while [i < people]0 Z7 X* A0 s% }! A# U
[# J0 o# _. g* x2 m5 k; j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 U2 W. t8 J5 h, t" ~7 I/ y1 eset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 e5 y$ j' s. ^9 t9 |; N- ?set i (i + 1)
- F2 @; z9 \( M3 x: `]) @- Q- N& A$ G  C6 m
let k 0
) ?. b* x9 j' T; h. olet new1 0
. G) q+ f; u' B9 twhile [k < people]9 v$ ]" Z1 _  v, v3 r1 m* i+ s4 P
[
3 T  Q: s# O& v6 ]$ Pset 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)
! u; O! c( E. X. h; [+ d7 Sset k (k + 1)" [9 t, h% g) Q
]% T: h7 U4 b, f. P! R
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   w( j! _; C* P( T3 r5 q2 L
set global-reputation-list (replace-item j global-reputation-list new); d( q6 n/ |, I0 w  G
set j (j + 1)
2 k/ Z# m* H4 ]3 ]9 w]
$ w4 y% o4 O- U6 ~& k8 _end* @& o, I! F5 c: \# j9 s

, u5 t- m  `& R8 w
/ Q) T0 L( ?4 S9 h# ~2 b0 S, L* [! y% R0 X! H* g' C% f
to get-color* K- Z1 r- ~+ _$ V0 V) G
/ c# ~9 U+ x$ L  B9 }
set color blue
6 F3 P2 n/ j, |6 S- ]. L8 \# t  O
end' E/ [* k; U- K8 B( x( T6 b
- h  Z3 d9 m" h: i+ g, M, b1 O
to poll-class
0 k2 m+ S. q! O* Lend% T8 ~" l4 b. Q9 {- d( X: I

$ D2 e3 y0 ]6 n6 R: ^/ D4 bto setup-plot1
( m7 i- Q. z& {1 f# B3 f9 [- m6 X" G0 ]" A" Y8 i
set-current-plot "Trends-of-Local-reputation"

8 h" l/ S0 o6 d6 `9 t" O% T+ z0 Z1 n. C4 C$ o, ~! Q3 m
set-plot-x-range 0 xmax

, r7 ~: D5 B. T( S
& n7 B) q8 l" x& B7 [# Uset-plot-y-range 0.0 ymax
: a* n5 @$ K5 G- k: ]2 Z
end5 J2 d* k! G) h
9 K( j3 [! {$ F& b, |; W
to setup-plot2' B; O6 X( K' R+ P

* `: @! M7 D" Y, g8 o; zset-current-plot "Trends-of-global-reputation"

1 P; Q% W2 x) g" j( D1 `, ?* g9 J: _* H! ?; r' l! R
set-plot-x-range 0 xmax
7 K  S* Z; o; d

/ W- E/ y( Y- I! S' Pset-plot-y-range 0.0 ymax

+ x5 i5 h: W& F4 U5 e) l* Cend' g( f. B! D& U. F$ H

( r$ k' k, D. rto setup-plot3
8 }2 @$ ~" j0 {" o" e
3 S$ }4 h  A1 C# T" l" Qset-current-plot "Trends-of-credibility"

, f8 s3 K8 u; U2 l
+ K; e! X2 i; e# Aset-plot-x-range 0 xmax
8 H+ |( P' s9 M5 V
7 T0 ]+ E8 ?" a- {
set-plot-y-range 0.0 ymax
9 Q2 l- }& W# X; s: \! S6 h
end4 Q7 M* Q) y& Q* Y

4 Z2 M( v6 T) Vto do-plots
. @, c: b) ~& n- @7 r: cset-current-plot "Trends-of-Local-reputation"
: F$ s5 J) E' h9 g/ |* @set-current-plot-pen "Honest service"
4 W, v$ ]2 x( |# H% bend" o: U3 @% V, L

( F( c8 Q$ N$ q1 l' o  f[ 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  ^6 ?7 k+ {" u/ e3 s  p9 y. q0 [. X' s9 q
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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