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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:
: Z; R$ D' o! hto do-business
; ]: L3 X* C5 i; K3 V rt random 360
% }8 T6 F! E% [5 u fd 11 S& d! T# A3 Y1 F+ d( n  J" L
ifelse(other turtles-here != nobody)[# P# O1 {! c2 e% [' c
   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 A$ c* V! F. Y3 h   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 r5 U+ z6 T3 R6 ?. W/ N: X   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) I( {) D: [$ I! e% @
   set [trade-record-one-len] of self length [trade-record-one] of self
8 g- Z0 ~/ e1 w( q' L   set trade-record-current( list (timer) (random money-upper-limit))8 M& h% C; R+ G" p; M

# e5 X& E2 I. d0 \' j4 _1 v问题的提示如下:
$ I  N  D" r% E% O* r% \7 }
6 Y; G" i& U0 C$ `9 @8 z6 Rerror while turtle 50 running OF in procedure DO-BUSINESS4 y0 w9 B. O! f
  called by procedure GO; p# n# ]4 Y6 k# n- H( u
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 s) E" i4 }6 f6 W3 R- H
(halted running of go)
( @# {1 b% w; `& ]) z' M- l* u% ~! W4 c9 S3 e( y; q! {6 g
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~~
: j& R9 U" H/ s2 m  x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
, @7 q$ E+ f0 _- a; K% `8 X; o" uglobals[9 u7 r7 [/ L# X2 E
xmax. \2 R+ O* z1 D9 b  r6 T# \$ S
ymax
/ e& b) u& }# B& @, M& V1 aglobal-reputation-list" p1 ?- u- W! _
$ i0 ~5 a7 c7 S7 E9 M. o
;;
每一个turtle的全局声誉都存在此LIST" B) p7 Z4 P, I6 _$ u1 l( t2 H
credibility-list
7 T8 K! r  k+ \;;
每一个turtle的评价可信度% s7 S4 J) S. k
honest-service2 F! H9 D1 J0 X7 Y4 C; Q; r! E4 [
unhonest-service7 x8 m0 R$ U* V0 \
oscillation
$ }: a' E! n& f: t% o- S5 l& rrand-dynamic( |+ w+ B# ^+ _- b/ ^2 {) q
]2 A% L2 A& M" d/ x6 N3 w

& ^( o' }3 h3 hturtles-own[0 u4 L9 j6 E7 c6 b1 c! b0 D
trade-record-all
9 K" L9 R4 o, p;;a list of lists,
trade-record-one组成
1 R; l8 E* A* N0 x! F/ Xtrade-record-one
- L; s4 v( W5 ~8 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
+ X$ I; X3 {( `: Y: C; W/ M6 L+ U9 T
;;[
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]]" r- X  D( i  c' _- X0 q& ~1 z- A
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]
2 x0 \. G* r* {- H* zcredibility-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
- l& M8 V- P( N+ D+ s0 pneighbor-total
" Y4 s; J' ?  Y! A" u;;
记录该turtle的邻居节点的数目; r) M/ G7 C) [$ B  a4 i7 i6 E: m
trade-time. _+ j3 C8 l6 {$ _
;;
当前发生交易的turtle的交易时间" }4 e# q; D4 K4 O) [" E
appraise-give
, T( K1 E* y. X;;
当前发生交易时给出的评价0 \+ W, b9 D" X% K3 v
appraise-receive0 M: f! ]1 i/ p
;;
当前发生交易时收到的评价4 T0 C, H/ ^+ t! @
appraise-time8 d: Z- T8 g! r2 X
;;
当前发生交易时的评价时间) G5 g& o- u& w3 s+ |$ G, I
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
, T1 ]& B; q# s& Y& Z. }0 k  [trade-times-total
) w1 l6 }! s( v;;
与当前turtle的交易总次数
2 T8 T6 P* a3 z, H( K' \! I1 ytrade-money-total2 O4 W) R, o8 U
;;
与当前turtle的交易总金额
7 n. c* m# S+ Z3 _local-reputation
4 D2 n5 j0 Z& ~4 N, E; Uglobal-reputation
! z+ h' E0 f2 ]+ d- lcredibility5 m8 h( H; ]8 i/ |  f
;;
评价可信度,每次交易后都需要更新
0 U' y( S* d* c2 q; M5 W) }credibility-all
4 w% `' B0 e( P8 g/ w1 I. w3 ?* t;;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
- n: R/ h, X% b, X* g5 y
5 I2 z4 z. R6 h: X- I8 l% 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0.58 _* _. b2 U+ N
credibility-one
* I( T) [) b3 s1 q2 t;;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people2 G9 d  i; x% k- h/ A* [
global-proportion
* H0 n/ X' i# g  s4 Y1 Ccustomer
: }8 ^6 X. X7 _  w4 n/ O4 `customer-no
" E; ~( p, d; P1 Mtrust-ok
! w3 A0 H% `" A& q* b( F, xtrade-record-one-len;;trade-record-one的长度  l% y: q' y" v7 v* H- a2 q1 ~
]/ R3 ?+ R9 r6 P0 Y4 J% a
( n+ t9 {- H! `- Z1 M7 y
;;setup procedure7 ~' L; u3 o3 H) a6 z9 a# M5 a6 w
+ o( b$ Y# S5 K
to setup
, N( l4 p, t6 s0 A* D, K- f
1 v9 ?+ o- F, n0 {7 ^- Qca

5 O) E2 ?; M, E% C3 C7 [, L! Z4 ?$ ]
" @. R2 o% l2 Q/ E$ o+ z; W7 Ainitialize-settings
- w7 D! O; ?+ R! w, T  M

, b6 \3 j6 G* \: H5 i  ucrt people [setup-turtles]
4 C5 a( E/ r$ e% ]- v2 |! N

5 f- q6 B1 \( P& ~9 E% h  zreset-timer

2 x! }0 F; [- c# m3 f( |/ L3 p7 K( \
poll-class

% _( `( I4 c+ [; _9 i  n, a5 h# O1 `, p2 g
setup-plots

; k1 m/ [' [7 c* P) F3 G  Q0 H. L+ ^: Y% u
do-plots

' u* _: m  [1 U: n/ o: rend4 ~, J' G, J0 K% P# ]% c$ y

9 G( y. w9 |# L7 j/ {2 Ito initialize-settings
! V% \8 m  q* `) n3 U) v# I" L- [  G( p" c8 x1 Z
set global-reputation-list []

4 A: n8 N3 B% Q  X' a
- t/ f/ M2 j; Dset credibility-list n-values people [0.5]

* G3 `- ^0 u& ^" a! v5 J( H3 P$ c
: U: [- `* r9 ~% oset honest-service 0
: |" {" r; [4 P& R9 p
, C7 R4 g: u! e- Z. K
set unhonest-service 0

- E+ B1 u2 B; p# T& D) b4 F0 K
& v# ?9 v9 K% r! V" x. Y, C8 }set oscillation 0

! C. L6 x/ n/ J9 U# A1 o) y( m' x2 `  M! C) p4 H
set rand-dynamic 0

: |, M0 s0 y. Qend4 w& M' l; I2 B( g8 g1 j8 O& k0 E

1 E- f/ V0 n% U( i5 g' ~to setup-turtles
% ?# s% O' v5 wset shape "person"- t% ]' [2 ]5 U% t
setxy random-xcor random-ycor; @( H1 O9 p1 d6 J; a
set trade-record-one []1 |3 x; J* y& r! l% O
  z$ j- u& k9 S9 B- o! A9 f
set trade-record-all n-values people [(list (? + 1) 0 0)] 9 l0 S" F5 ~% p4 r8 q% a4 s: \" A
: y* p, [$ o7 N- s- p
set trade-record-current []
. N! W) Q% y5 [: d9 _set credibility-receive []
* H) a  d* m  e1 ], Tset local-reputation 0.5- a+ M) U; n% c' w3 B
set neighbor-total 0
' L+ `9 P% H6 ?- Pset trade-times-total 0
7 ~  [) }% @8 ^4 Jset trade-money-total 0" @  E4 b- ?0 t6 m& S! i
set customer nobody
' v1 o8 c* Q2 z; y3 Aset credibility-all n-values people [creat-credibility]
1 l* A% R$ t3 N( L8 Eset credibility n-values people [-1]( r& J; [7 c* A# V! Q+ M: M
get-color
1 u' u! {6 A  e* ?

. f/ D/ j. y# R/ bend
; R* Z5 P3 N9 Z& G* W4 f, A8 n
; _- G9 b* H* J# Q. p2 v7 ?to-report creat-credibility" R! K9 i3 K2 S: i* E, |0 ~
report n-values people [0.5]$ ]" \2 H9 @: z( F' {9 C; H" N
end$ F1 x! c' A8 f5 p0 n! V- `0 `2 Q

1 I  _9 f# |' p) sto setup-plots' l$ [& Q! U& L% ?/ t3 w
! Z9 ~; M: R* F$ v  G5 O/ |
set xmax 30
0 v/ Y. |# x5 f4 B$ w. v

) Y1 R# X  v4 r  ^) d" X$ z' h& bset ymax 1.0

0 X9 G" c& t+ S6 F9 l( e6 N2 I% t7 E8 b6 q9 B6 O4 t8 [" Y6 f
clear-all-plots
4 E3 ?8 V% F, h) E- E$ L+ V' L) r
$ S4 i& ]/ P/ i# y% [
setup-plot1

$ K$ J& Q. f4 e+ w1 W- |% n( R' O( c$ G8 G' k
setup-plot2

- c0 x: q! ?- F/ l- B9 }& c
2 n: a3 ^' f5 W+ S' }  e- a9 \setup-plot3
. Q4 k$ i; ^/ i) A
end
5 y/ L- G' u! O5 T' H1 O9 O; r6 Z% h! W1 H0 `
;;run time procedures
5 H, E: y" D1 O1 z- C5 G
2 {- G' z/ {9 {1 i' q4 N8 h  xto go) E! w; K1 {, ^7 Z
9 d6 ]: m3 @5 n0 P( {; w5 |  T& ]
ask turtles [do-business]

- \2 }$ Z6 Q3 V. L1 [end
5 P" T& G: |+ Q. b8 A
3 Q6 k9 _2 R1 j. d- G3 ~* x7 g$ Ito do-business 6 @# T9 O+ j, E2 K* u

3 m( U' M* y8 J: Y& [$ ?- ]1 P6 Y+ z% G' q7 f
rt random 360
" Q1 N% {4 Y' T/ B- Y
. U5 w* V) F( x8 w' P1 g( H
fd 1

; b; h$ }/ b$ v4 j5 K( |
; B9 Q4 u' L" P) \# s6 Cifelse(other turtles-here != nobody)[
  |! ]: y- N' I5 \
2 W( Q+ Q) _7 y5 D9 U/ {1 U1 T, H
set customer one-of other turtles-here

0 ?% d1 A+ d9 t6 c, ^
* e0 }# m- K1 q3 I;; set [customer] of customer myself

7 f, ^9 \! T( e0 V1 Y+ g' p
! s" Z3 q: s$ Y. hset [trade-record-one] of self item (([who] of customer) - 1)6 _! ^  Q& N, J1 k; z" Q) [
[trade-record-all]of self, d# ~+ j/ n$ A7 l5 z9 y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  k; P$ [) D7 J# k. U

7 j! k! Z2 F9 M6 P- tset [trade-record-one] of customer item (([who] of self) - 1)
1 V6 ~" ?2 D% P0 a3 f( J. G. O( @[trade-record-all]of customer

; A! O+ c# [" G
2 {  ?, F7 J1 ?, L8 U5 Uset [trade-record-one-len] of self length [trade-record-one] of self
* ?6 T/ v3 O$ j
- q; k) f8 H( n. ~" W2 H
set trade-record-current( list (timer) (random money-upper-limit))
' ?1 h9 Q% @8 W. H2 D

/ A3 Y6 |9 F3 U: n) Y9 L& g' Uask self [do-trust]) h' b  {7 d7 n" {
;;
先求ij的信任度! v$ y9 B) P5 j% d0 W% l  Y

- e! y& D: |" Xif ([trust-ok] of self)5 a$ B% |# ]( L1 s6 v+ W
;;
根据ij的信任度来决定是否与j进行交易[' N. l6 Y  B) R) f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 ?1 I8 L( J2 ?8 x1 U2 k+ f3 h

4 e( {" c. p% n' i* p' V$ P  K[
- I0 S0 m& E$ l# |

; q" c. w) u% f/ I$ E5 j  ]; S% bdo-trade
$ V  S3 L4 O+ x! y) B

: }+ l$ a% R! n# l! F, Mupdate-credibility-ijl

  Z7 t& L! Q/ R1 ^) s" e# P$ B3 D  \) Z
update-credibility-list& |0 B2 o: R5 m( ^" |9 S

1 d& {: I7 b/ _* m& ~( f  w6 N4 X( U6 }9 u" c* r
update-global-reputation-list

9 _! C* B1 }3 U7 p. U) M4 c; {9 z4 [6 ^) h' x6 z$ c
poll-class

! h$ G: y: l& M/ Q9 S, ^' z% Q" c; p# i/ p( ^
get-color

) h- U" M6 w" K5 ]5 o2 P1 }$ o
+ \) t. }: v+ ^6 F]]
( j* A2 l* o, v1 D" J) }3 q
2 e- p4 f9 M0 v$ M; ]4 C5 m& S;;
如果所得的信任度满足条件,则进行交易$ p/ @3 _# E/ F9 o0 c! Q1 h* g  p
8 ~( v; o5 u. b; e
[

4 Q& P9 ]( \' ~* ?1 @7 `) t- N& P& W; {& ]% X" `+ V
rt random 360
: T, N, Y  X; X+ E

& o  r( _- J( Z7 kfd 1
' g8 |! g( z7 F3 i, Z
" ]$ [. K* X9 C# \5 q
]
5 x3 F# n+ {9 _

/ W0 P: J& x' i( B' iend

3 Z* i6 J- Y4 y- A* l% ^0 v& ^7 V/ j% |4 A# x$ w& r
to do-trust
/ A1 W( Q! j% v. J3 ?: a9 T* \. x/ Iset trust-ok False
+ r" J6 K4 h  O6 \
2 _& h3 G) C/ B. g: S
8 }  G! A8 z! [/ r5 M1 }' T( o) v! G
let max-trade-times 0
4 f8 d2 d1 k  k5 {8 M) bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 k$ i' P2 U. U4 `; @4 E% l/ p5 {5 Q
let max-trade-money 0( _: x0 d/ V2 n
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 I- s! y$ U2 v$ H1 U& C/ Z
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 g- b5 ?0 i: Z" B7 a. j! n
) d4 l1 Z# J, Z5 E

) R) I& S* n' B+ N( X. j5 Z: |; a4 mget-global-proportion" M3 e7 U  J( z, e. ~8 D
let trust-value
- h* l6 U) e7 }" D: F' Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% b2 x+ O- j! m. ^
if(trust-value > trade-trust-value)+ W/ L( G- B/ u/ T& u8 f/ f
[set trust-ok true]
5 l6 N. R# J. L8 cend
$ s: u8 e3 D; H  C( r$ r+ ^8 \
, n: @# _5 v, l# w: M4 ?to get-global-proportion; B8 g$ _1 G3 c, j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% ~' a- Z" ^/ k2 j; W[set global-proportion 0]8 Q. n% L# v6 t7 x
[let i 0, Q) J, |7 h$ t$ ?9 N. U5 a
let sum-money 0  G- ~" f+ l/ \
while[ i < people]
# v3 W& l  ]. }3 |[( D+ ]; M$ |6 k4 C! W
if( length (item i% y- x& {6 G/ b1 G
[trade-record-all] of customer) > 3 )
" T# e0 h/ T" O0 q. E5 I9 t
[, A+ I6 B2 c( O/ f$ Y# U
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 A- b% y% B9 W" G
]* ]+ q/ O! _  h
]
7 Z) H) t7 L, ?/ E* l" N8 E* Olet j 0% \3 ^: a. W- m, o* x3 e
let note 0
; z8 x: N) v5 g0 Z3 E2 T# t7 Rwhile[ j < people]
5 Z  E3 H$ E+ M5 d  p[
3 X) K  d! k" gif( length (item i& I  d% ~: D4 e1 t; W" C1 x
[trade-record-all] of customer) > 3 )

& z" e- V2 `' `[2 f1 m6 a) E2 E! `* k. ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)4 y/ h* @3 n7 f; G/ Q3 Z
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 [+ K$ e3 R% O% j) D9 \5 c+ J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], K* X$ B1 L- ~7 E
]" p. Q1 q6 R$ d) X
]
  I7 }* C: D# x# Tset global-proportion note' ?) I  A6 \, K, ~, E2 L! C# @. H
]- Y7 U1 A! O; w) ~. B* H) V
end# d) |6 m; Q% o6 `9 ^! a+ ?/ X

  P% \* N  u0 s  j9 Fto do-trade
3 z3 G. g& d) F/ P4 I0 I;;
这个过程实际上是给双方作出评价的过程  s& n( ^+ S' }' s3 X+ H+ p) ?# p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 I, K3 R3 q3 F% E8 kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价$ @6 J0 B: L6 ~' Q9 L
set trade-record-current lput(timer) trade-record-current3 c  @+ O5 b/ D3 C! n
;;
评价时间
  W: j$ E9 I% R% \" M0 Vask myself [
; C8 E: v7 @7 C. X; Iupdate-local-reputation
- r; c) i9 L- E1 {( U2 G- Jset trade-record-current lput([local-reputation] of myself) trade-record-current. a7 E/ j7 B! p+ r" h; `
]/ o2 t4 K, p$ Q% k( I2 ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 ^  m/ t9 z+ _
;;
将此次交易的记录加入到trade-record-one# v' \9 Z% ]1 v7 c( Q, I- T0 k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ `1 z, S" z7 K* N: z9 q" v
let note (item 2 trade-record-current )2 J+ C! p- k( b0 Q! u
set trade-record-current! c7 {5 i2 ?3 U8 ^
(replace-item 2 trade-record-current (item 3 trade-record-current))
7 y" g! _# S: b3 f
set trade-record-current
" Q6 Q! i8 ]3 C- }& Y! Y(replace-item 3 trade-record-current note)% ^1 A3 }, B+ N! ~4 _$ o2 g, t
$ C4 L/ I4 ]5 i  k/ d. ^
' H- }2 i& `/ w" g1 z
ask customer [9 o7 {8 f1 f/ Z. t8 A' i  b; y4 C
update-local-reputation
% e% a# m9 z  o3 n, D0 _: sset trade-record-current
+ e: B  O8 |$ X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' U8 Q: C" z& t/ O5 v0 T]
) e5 H' L! T* `1 o: W0 R: r) ]; g# Y. l, v

6 r2 S/ w7 ?( M; B) q# W% ^( Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ {5 W) V) V& {1 T: K( ^3 t
  z/ u0 M" r( i( i5 x% Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ P* J0 G& h' d$ \
;;
将此次交易的记录加入到customertrade-record-all/ z8 G( M1 b  d3 L
end
4 `* n# t0 q) p1 m- }
* b8 C# p$ d2 n, T) Xto update-local-reputation* d' _4 _4 j; {- Q
set [trade-record-one-len] of myself length [trade-record-one] of myself1 G# d! q8 i# X, T* J* X, x% E

$ C; M4 J( I- H) C9 R1 A
& V& g, n& {0 a- O;;if [trade-record-one-len] of myself > 3
2 T+ o2 W+ w1 V8 o
update-neighbor-total
7 a, \  n" m1 A;;
更新邻居节点的数目,在此进行+ b* m; y; p; Y8 I' c+ l2 G' k$ b
let i 32 U8 @0 T- b. a: E, c! `
let sum-time 0
7 W5 b6 P9 ~6 a/ ~) F: q; owhile[i < [trade-record-one-len] of myself]
% e( d1 O6 W6 B$ H[
9 V+ z' Q" N& @  e' dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). d- P7 @2 y+ p* M( x& N
set i+ i8 Q% Q# w/ H/ H6 t8 C. ]
( i + 1)
: o, B9 t9 e5 j+ q" V
]
# n$ p7 k+ T- Mlet j 3: `: @) B5 j" Z% h4 W% m1 N
let sum-money 0
" ?- g8 s0 I) R) d5 V" D5 nwhile[j < [trade-record-one-len] of myself]; q6 I- i# t3 W6 ]
[# X7 q8 ]& w  S% \
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 s- i+ t$ k* Q! F8 Wset j
2 Q) J- h. p( b7 w7 A% |( j + 1)

2 y$ ?8 R: m; F% L5 _+ M  s]4 [* I. D. O7 p5 M8 ~7 p/ y! p1 O6 p
let k 3! b7 P! |9 Y: w) V& u# Z
let power 0
) _' B6 n5 j! q- nlet local 0% A! {; A1 E% K" x8 B$ i/ z
while [k <[trade-record-one-len] of myself]' v/ c& N9 B$ `6 @7 m
[
; \- q  t4 g( J7 ^( b3 h- Z$ Zset 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)
# z5 y  Y& a) @' T( @set k (k + 1)5 w2 d$ ~# J! ^' b; S7 d8 O: m7 p
]
6 Z$ E" s4 T, r2 f" v3 g8 \set [local-reputation] of myself (local)
* b6 X% g, F2 S5 R+ p* p8 p& Z0 H. b" ]end/ i, N. d- {- U

; h8 d7 f, W! x- U& }+ B+ t4 n6 ~to update-neighbor-total/ p! I# F: Q2 k6 U6 i* f) I
' R! \2 }6 W) s0 s9 J/ O! _
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. O% f* z% t# _. B" i& P3 c$ i

/ N5 k- `# d  b' _2 q- n9 d# ^. ^end
$ m6 U! M0 m# g
, A& k. x' [- F# K$ X6 ito update-credibility-ijl 9 |: s% f3 o$ a- `% @) x

( u: ?0 m2 Y4 @1 S5 S;;
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。
. }& m/ }( P( s4 u" g' vlet l 03 Q' \: [0 w. }+ ~" f2 n  R# i
while[ l < people ]
7 n) I  V! T3 H+ \- v;;
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
' j7 z% U' [1 d7 `) |" s[7 y& b  O3 ?* u- D# W6 q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! A0 [$ {+ V" g) ~2 H7 k  p0 Qif (trade-record-one-j-l-len > 3)5 F' K( g% u; a/ W2 x) C2 B$ p( r
[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
* K) j3 K" N6 w- J" }let i 37 F, g5 r2 S1 C. V; o9 l) k' a4 q
let sum-time 0: D% Y' @7 P9 ^, K2 @: |
while[i < trade-record-one-len]- \" X& J1 y8 K7 P9 \# a, U$ \
[
8 _3 P  A- O; A8 o* R9 y7 Q: _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( d9 h+ I2 i1 i& s
set i
9 a6 ?! {, Y( k, v. R2 I" q( i + 1)

. p2 n: F7 Y- v( _: O4 e+ b]
5 f+ \+ l! T4 S1 s3 nlet credibility-i-j-l 0# J: ]" P( E/ P: q3 `9 ?
;;i
评价(jjl的评价)0 ^$ A: B, C$ q
let j 3. u. Q1 X1 f" j5 O4 F% a0 P& h5 d
let k 4
, t' k1 h: J: X, b$ y7 hwhile[j < trade-record-one-len]4 }: ^8 p( ~7 D: {9 f
[
! {, U6 ]5 a/ Vwhile [((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# E) Z6 r0 t# G6 N0 c
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)5 s1 C3 D  T: i, P* p) h( d8 g8 ^
set j
6 K# F8 E0 L& i( j + 1)

; K' r- z8 K- r]
. _1 V6 P. J/ _. B( G/ {& pset [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 ))& }, c  h: P# R; U! \+ \  m
: O, F" ~/ Z; {8 |7 U
7 e3 ?& a/ q: L& d& r
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" S+ c5 w1 d* T( D;;
及时更新il的评价质量的评价! c& Y' k7 O) D7 s. K/ A7 i1 |
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, B% `% C8 H% F, D- A, K, qset l (l + 1)$ A/ ]- y* l! g& B" x
]
/ d4 @: P1 R9 ]$ Bend2 v! c* [+ @' o! u

( g0 ^: Q; F% K8 B2 \# p1 e7 R9 Uto update-credibility-list; h* o1 O/ H( Y) o
let i 0% Y/ \4 x) A6 \/ F5 [! u% D8 K& y6 T
while[i < people]
% h# z/ D+ }: v% A[7 k( V0 y0 l3 E: h# P9 ?% n
let j 0
2 c% j7 w2 [- v4 G( U, h, B3 jlet note 0* L1 Z& D! p4 V! Z0 `
let k 0
# C  j2 K# X) a6 Z;;
计作出过评价的邻居节点的数目
( ?' J* d9 N- n/ F7 Ewhile[j < people]
5 l# {& P$ c# L/ n, Y[" ~) z: D2 L) R; j
if (item j( [credibility] of turtle (i + 1)) != -1)
* S+ L3 z: {: R" l7 F5 _& D0 h;;
判断是否给本turtle的评价质量做出过评价的节点9 ~( Y1 E4 R1 v3 x% s# S
[set note (note + item j ([credibility]of turtle (i + 1)))
. C& v; D1 G  b; A% L% |  u- o;;*(exp (-(people - 2)))/(people - 2))]
3 q5 ~- Z8 i+ y. n0 k
set k (k + 1)& \4 {3 C0 N' C) o. \8 u6 F. u
]
" {+ d, |- K& q/ H( V, Jset j (j + 1)
, K6 ?# W2 N2 i+ n]" s% s3 }4 e! B- y
set note (note *(exp (- (1 / k)))/ k). i2 o1 n3 `9 m/ k& z+ A0 ]6 C' q( X
set credibility-list (replace-item i credibility-list note)* ^" ~& s: W# ]4 |& z4 \6 T
set i (i + 1): ~- M# \" J8 }2 A
]
' h! C- N, U5 Z3 C1 N2 ^end" C* s/ [- c: K5 G  \( }- ?; `. \

; @) }  ]$ X7 D3 v! bto update-global-reputation-list
4 f6 `1 q/ a* l+ alet j 0$ U5 h0 \2 _* r- Y  ]8 ]0 q* U& p
while[j < people]
, A5 X" b5 N6 S2 @3 t8 T0 W1 z[' c2 r1 v; @# u( M, q
let new 0  M9 B$ V  M2 `2 ?9 W3 f
;;
暂存新的一个全局声誉# l! F. \3 b9 B! J( R, B2 Q5 H
let i 05 E$ `2 S; N$ D6 Y% I8 ?* C) j) a; ^
let sum-money 0! l! F% @! c: m; a  o
let credibility-money 07 ?  W; _8 ^% }8 I$ T* ~5 ^
while [i < people], t7 t& o  Q1 m7 E. Y+ A2 J
[
' x6 P) k: x, Z) x* x5 D8 T: aset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( H# E5 [8 p( p/ k( ]0 hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' _- O+ w1 e; {, G' f: x0 sset i (i + 1)
* l' c, ~# F0 q% ^, B& \]
. g- n& Z  P* H  I& Nlet k 02 `, x/ a" W0 m" U+ t
let new1 0
4 @7 `/ I7 q+ _4 P6 gwhile [k < people]
: K9 |4 ]/ C& m  M& V9 e3 |5 j[
/ R( h# R- S  j7 ~. o& `4 i7 Iset 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)
1 C! j7 N  _) u" _; }1 T( Nset k (k + 1)
# n4 @' q' q  a) {* X0 J- }]# R( W) u8 F& B9 A6 T/ ]. o& Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ' W0 @: p" J3 Z% J+ ^; Z
set global-reputation-list (replace-item j global-reputation-list new)8 {+ I, s% |* c5 ^" U' I
set j (j + 1). R" [" H/ ~0 ]: `; z. n
]1 m* o8 r% a9 R4 m
end3 n2 B0 ?6 q2 a9 f

! Q+ c! k( E% a9 A: `: a5 S0 n; A2 F( g9 ^! e' j

( {. t# J- D( ~8 hto get-color# O% l6 E1 P, \
. P6 \5 s# W% l+ H0 i: L; m
set color blue

4 _8 N; t& A5 m( F) Wend. P$ [4 h0 \- e" y+ L
; x# ]5 y& w- h& `2 A! y" ]+ [9 ~
to poll-class
7 _8 Y; R  i) m% i$ ~) O/ Jend# v$ x; p0 D, w% y( E

  R2 U( G9 d3 c* Y! r& V, Ito setup-plot1% D3 ~, p& E9 o

3 C$ W, I8 l  v. s  Kset-current-plot "Trends-of-Local-reputation"
* m* f9 o. ^9 p

6 f# w1 E& f& D5 _/ P2 hset-plot-x-range 0 xmax
' X' t% s) j) i1 P
4 g- B1 v7 j, P% B: c% G. r
set-plot-y-range 0.0 ymax
) q3 K( h; Z# d5 z- s
end
1 I5 _8 A6 e; N& n! h, g( }
8 q/ ~4 i) [) y1 K' |, Jto setup-plot2
0 _) q6 ^& d! s
4 Y$ a' T, e. iset-current-plot "Trends-of-global-reputation"
1 \4 n8 N% }, K+ y! d# e: P1 B
/ n: n1 x$ q7 B2 }) Q4 V
set-plot-x-range 0 xmax
, q" r* T" Y4 S9 ^9 t7 @. l# V

# G/ F3 g5 z: H  s0 Fset-plot-y-range 0.0 ymax

; Y' \1 I! o4 o  L2 r; u7 Send/ Z6 H1 Q* J7 G0 V- n! H

* G9 c6 l7 v3 c; C/ |) }, h: Yto setup-plot3
1 ~. f2 m) o8 z1 C2 d
: M2 h0 v$ d( a, c) J! t; Lset-current-plot "Trends-of-credibility"

- K3 }% {0 T1 b4 A- z5 \. i3 w7 C5 A/ y/ I7 l
set-plot-x-range 0 xmax

9 q- N" E" t& U% z8 w! g9 g3 x# l. L& \' V7 c. N+ l& L. j; J
set-plot-y-range 0.0 ymax

: ?, I& S6 F; F" M. uend9 W4 `% m; l8 e$ f& Y$ d# q

4 q1 @) M$ K0 t: x: Jto do-plots. }! ~# u( F  ^6 y! }
set-current-plot "Trends-of-Local-reputation"9 H, u/ A5 m3 g1 S- ^' E$ y0 q$ ?! a1 d' b
set-current-plot-pen "Honest service"& c/ j9 w, A  N
end
; z1 W6 D* |6 u, {1 f. [; P3 H; B  [2 `) S: b; r8 b
[ 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.
, A9 [" j; [" X; k% ]5 k5 k4 |. m# e. t% H$ F, k7 z1 D
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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