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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:
4 L& ~! b7 s* x* `4 I. Bto do-business
# }9 u% {  \) X) n( u$ Q' z rt random 360) Y5 ^( @% q' W) N3 v, P/ p
fd 16 f% e+ l1 k+ o1 K1 C) S# L4 Z
ifelse(other turtles-here != nobody)[
; a: M6 e! o6 K) r% a5 i0 o   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.; N8 a" y4 C$ {$ k; m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 F$ O( V/ T4 {6 Q3 Q: H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer# t# I) O2 O( h7 Z, E- s
   set [trade-record-one-len] of self length [trade-record-one] of self
6 n6 J4 J# u: d; W   set trade-record-current( list (timer) (random money-upper-limit))8 N8 O# m& ?5 Y% i7 k6 O

" \* K7 V# L6 ?2 V; {7 w问题的提示如下:; a* |6 m/ B- a, M8 ^2 n
3 m& k6 I# J8 m; T0 @; z$ r: p% G
error while turtle 50 running OF in procedure DO-BUSINESS9 i8 b6 j5 v, ~* i
  called by procedure GO
5 h/ k" A: X5 cOF expected input to be a turtle agentset or turtle but got NOBODY instead.& M( x( ?2 r: ]7 e) W! ]0 T! ^7 u1 y
(halted running of go)" x, t9 c& x7 d5 ?/ W3 }
) H* w6 e# F/ X9 d& @" a& ]; ]
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~~/ T2 ?$ p, |7 z% _, ?3 q+ z
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
3 d, }3 W5 ?* K5 [" Oglobals[
0 g4 p# c6 [! |# _0 jxmax1 w" H, K# T' F
ymax2 D- P# \- ]$ _  C& `1 @
global-reputation-list
1 Q8 m' |- E$ ?/ E* O, Y7 c8 n, ?% q
;;
每一个turtle的全局声誉都存在此LIST9 h- J' f6 M# l0 r9 ^5 |
credibility-list* @7 m+ r; [' ?2 U
;;
每一个turtle的评价可信度! E: C5 m5 v7 s( |* f) m
honest-service9 N" o! S4 k$ H* a0 R
unhonest-service- _, ]6 R: _$ z$ c  u2 {
oscillation% L5 N5 \; _" T) ]1 g- u
rand-dynamic
& V; P2 h/ r" B3 O- v]; T% a% I7 T* x: J0 n. S
* }( {+ s# m, I5 J' `
turtles-own[
2 r! s+ m. i* {0 `) k8 Q" ttrade-record-all
! D1 X) h) d. w( D$ x;;a list of lists,
trade-record-one组成
5 S3 i; K( y$ h" `& Htrade-record-one+ \" n2 g& i2 a0 L* N8 L
;;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 s' M: O* J4 h5 [! x2 N: m
$ v' o7 e: A7 \$ t' F;;[
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]]0 E/ R  o, E: k2 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]
5 B4 Q/ K" [# y# V2 P2 D7 gcredibility-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+ W  Y, o0 @! A( b
neighbor-total& e9 ]5 |, q" H$ j1 x
;;
记录该turtle的邻居节点的数目
, b, _3 A1 o4 a+ h8 Vtrade-time! c) ~) n8 E  g. z. w9 q3 D5 V
;;
当前发生交易的turtle的交易时间
% Q9 {( P+ t7 sappraise-give" F* D, ?) n' H1 m& g9 O
;;
当前发生交易时给出的评价
0 Z! U0 j; p. ]appraise-receive
; M+ T# ~7 S, x( A;;
当前发生交易时收到的评价
+ m% ?+ x. p9 r$ {$ Jappraise-time5 W8 d- J% u8 u0 k: ^7 i) Y4 x& d
;;
当前发生交易时的评价时间0 n# }" y0 n% w: \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 p, h6 P; q+ Z$ Y
trade-times-total
9 t, }/ a+ r2 ^+ O5 H5 ~, f, I;;
与当前turtle的交易总次数- C0 ?$ b  K/ h% R
trade-money-total
3 a; `% n0 N. q; w9 ?;;
与当前turtle的交易总金额' k5 N. M1 m' J; W2 U2 T$ @
local-reputation
( f% Y! T: |+ P% w4 Q* Fglobal-reputation
5 r6 F" N+ c/ }9 U; K0 qcredibility, T3 M! o/ ~/ F+ t( _& K5 Q
;;
评价可信度,每次交易后都需要更新
. g  u2 T1 t( d* p  I8 [! p$ W  Lcredibility-all
' \1 ]  l# Y7 Q5 w$ r;;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 V5 j# w  J- r3 W/ Y1 C# Y3 c- ]& j, 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, g  O6 L7 Y% j$ d6 ^/ g: e5 b
credibility-one
/ ?# U9 ]/ a$ o+ b5 k% a1 c0 }# H1 |;;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+ B( I' d( {* xglobal-proportion
+ M: m3 q; ^) {' |6 z7 \customer+ P  g+ D% s5 }8 X8 |. x# s
customer-no
& V4 H, r, v9 J6 O8 atrust-ok
9 w. m) r& D$ q, X$ Ftrade-record-one-len;;trade-record-one的长度  {2 m) |' s; N8 ?
]. G0 n7 k, q5 v9 k% P% |

5 f5 V* T) T( t7 K2 ]' |) f6 Y;;setup procedure6 @  {; l& Y* W5 ~

; a. H) F6 I3 U5 X# j; Mto setup
# E: M( m8 T0 m& K9 j$ D! V% A: J
ca
$ R5 g% D* [2 I4 C
! ~, M( D) ^7 ^4 W- D; A
initialize-settings
7 }+ ]1 }7 G/ b& Q& P! `. s

8 w8 h- \8 X5 Q& V6 M) hcrt people [setup-turtles]

; z5 E# o# l5 s" w3 C1 R3 L- s% v  x/ X
reset-timer
# X  U8 ]5 @9 b
( p1 W' J  X9 {) N7 j1 ~: e
poll-class

& B7 N% V: |+ Q7 e
, W- j* X, h- A8 C  {+ bsetup-plots
4 p% E4 ?/ u. q- W. N; k# i

. l1 E4 |! T5 D8 V" g- q) vdo-plots

, M. K4 [( Z* h0 zend
8 g; b( z, U" w6 @% a- m1 k
8 R; K3 u, Y. _4 Oto initialize-settings
+ B2 U$ x. W$ W6 ]: Y
# c' r# U. e  h: a. cset global-reputation-list []
: n% O7 G5 D- z1 `/ W

3 L' Y  F# b9 ?$ b. g. q: B# nset credibility-list n-values people [0.5]
3 z7 [1 @' f6 J/ i7 @6 |3 O
$ v! s( _  z* u7 i* L
set honest-service 0
( g8 c0 _( c+ a
3 e9 @! h* D1 w
set unhonest-service 0
* s5 j$ f: ]! I6 i  c. d* C
. F0 i# B% v0 }+ O9 K5 s) D
set oscillation 0
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  a$ d/ v+ e- z2 {7 X' f  e6 G
set rand-dynamic 0
, k' k" Q6 z2 j) W7 I" B  e" h
end0 H# n. w% ^  G+ n' X

5 K" K* W) \6 t6 m; c; G/ Kto setup-turtles - a+ ?+ r  ]6 G0 L: A3 h
set shape "person"5 K1 l" @& i7 ^
setxy random-xcor random-ycor
8 @* T5 u8 E# P  B: xset trade-record-one []
( }) I# ]$ |- U( v+ {, l* m* b0 I
, O. p4 e1 ]* j+ g6 r
set trade-record-all n-values people [(list (? + 1) 0 0)]
, s# a, g/ {# d! |5 ?
  w9 [$ W9 z! D
set trade-record-current []" d, b- T0 G8 Z1 o
set credibility-receive []
: q- m/ x7 z4 qset local-reputation 0.5
6 \. O( R: D; t* d* v# n! aset neighbor-total 0  F9 n- e- @! d; m2 V
set trade-times-total 0) P: j- U; B, _  D* G* z
set trade-money-total 03 q2 \6 f( y# W" G: C) [
set customer nobody& d+ O1 D3 @7 @' P- {0 x1 ]3 L0 M  l
set credibility-all n-values people [creat-credibility]/ p+ D! `$ k& n9 K# S/ P
set credibility n-values people [-1]2 O; i: N( c, S7 p
get-color
9 k, ?. P: g7 E: i$ Q. x

  Y& Z  o+ S8 Fend$ J- n- [, l$ F" u& }

6 R5 j2 N- t1 V2 r4 `. ~2 p" L; o( |to-report creat-credibility
  v& P6 Z8 {# [report n-values people [0.5]6 N# |% ^& G( @9 w5 T8 e
end
, y0 c) N" f% d- g5 Q6 S0 {, b7 X
$ h* f( T) w# W, a. q6 |2 Ito setup-plots* H# v/ ~) C5 L4 R3 D/ q
5 M9 x7 _; ^7 X  ~4 F9 n8 D- J
set xmax 30

+ ~0 z* S  B0 v# A- H9 }! {/ T, z. A
set ymax 1.0
5 n7 k- V7 }+ T
. {' ~% i* D: j5 T$ F1 p
clear-all-plots
) g7 M7 A. h  R; W
" |8 e( M$ `1 J. @; M( |
setup-plot1
  K$ [# R9 u" P: i. E
' M' [: g5 O: v$ X/ P8 z7 f
setup-plot2
# J$ ^, S* u- x6 r# ?, k

$ b; |- |! u  M% Psetup-plot3
" H% @- q, J4 n7 C5 u9 Y  S. s2 X
end
  f0 U" K! _' z) v
6 \/ H6 e# q# y: ]( ?# G6 W- H' k;;run time procedures
9 O( ^' u1 d# G( ^$ N7 H2 \/ z4 a' J  v
to go1 h# z) ?# E3 `  F& |) B
& u4 ~4 e1 y8 N% ^0 ~
ask turtles [do-business]

  Q' b3 R0 d- q. n! Tend
2 w- `3 g" R3 E" V0 l0 t: y1 b2 ^7 x' _2 g0 I2 a% K( [
to do-business & w3 t4 e8 e. t
* D* p! Q! z# n4 e( `

4 v" E! C; i* c8 f0 q9 f) }- xrt random 360

9 U# O- d' k: c/ \; ~* m' ]! @5 \4 |: z7 C* H$ `. _" n
fd 1

+ P6 {  C2 }! U3 X% k$ O# U. V# O& s3 u# t& R& t: |7 N
ifelse(other turtles-here != nobody)[
3 X; \) ?5 j7 }
! X, `, \. N: X5 }, m( [& E- s9 O
set customer one-of other turtles-here

# M' B# T" w7 V( C+ \/ e
8 G' [# B- N" \+ `) `5 Q: S8 X0 r;; set [customer] of customer myself
8 }/ G$ x0 p. h4 }6 ^* ]! [

- z% [" q# G3 B( b# Wset [trade-record-one] of self item (([who] of customer) - 1)3 y8 q# {' v8 ^; c- N4 h
[trade-record-all]of self
( l$ A( `$ [& W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ d+ N' e, F! z  F& o+ U* @% G4 r, X+ L) K1 N% L/ k0 |* `- V
set [trade-record-one] of customer item (([who] of self) - 1)1 ^: t& ~0 G( v8 e
[trade-record-all]of customer
! r) T) D8 |  P* y

; A' Z* V! L! a$ [/ M8 S# Zset [trade-record-one-len] of self length [trade-record-one] of self
0 {( L+ B" _) O/ U! M# h
5 Q2 ?# x/ f! V: N) ^' K, U+ O
set trade-record-current( list (timer) (random money-upper-limit))

. L- W5 _! s1 q4 A; Z; R7 |9 u/ z7 }; G' v/ }: P/ d4 j( ^7 c
ask self [do-trust]
8 w# A4 @2 j; y: ];;
先求ij的信任度
* X5 q( f3 l& A$ ]3 v  F7 `8 n
% a* Q( j, V* g: `4 P' R% b( Uif ([trust-ok] of self)
0 A/ ~, E0 H5 P% t) R0 J* t# ~;;
根据ij的信任度来决定是否与j进行交易[  x* a# H, W: k( c
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ ~7 J( o2 Y, Z7 A" {6 T4 d! Z+ L% i/ P- R! R* t- n
[
% w# N* c! u( c. \" B% |- Z

3 x% W0 |( E- L* |do-trade

/ u0 Z$ ?) d1 D+ b( Q  q# S' _3 D7 ?/ L6 J4 M
update-credibility-ijl

! M) b4 q3 l2 p8 ^3 |/ A2 Y
9 I  k! J6 S8 f; p' J, z! qupdate-credibility-list
0 o9 b6 w9 k! n4 v2 L' s
5 x2 ^) u) f+ L) j$ p) f1 z& k# B
5 w& f( J' x; f8 {1 S  H
update-global-reputation-list
3 `  Z% H; G; U1 d, e9 Y
1 l. \- d1 Z/ I7 }
poll-class
* F* h2 A$ c* I" ^! m, o2 Z' G+ K
- N! R2 q  E  U. d: w" l' K
get-color

; g; i" a6 u( A5 [# c1 y( T5 ]( t3 K2 X* ]9 K- a
]]+ H: ~1 j8 j* g9 d9 n

5 K/ s5 S& @: i' }- `6 E;;
如果所得的信任度满足条件,则进行交易6 }; d/ ^3 e. p& H! \$ i

2 B$ Y4 y+ p5 r/ w6 `" W[

) o2 }. s5 L: Q9 H7 o5 u$ z  a7 x. E  v5 |0 I
rt random 360

! V& ]: n' Y/ U& _) a. ?( ^/ j0 S9 u+ r' Z
fd 1
3 A& d. Q$ ~6 p

4 P- w+ E1 ^! P/ H( C) H! }]

/ y" e! r# y! M5 W- m. M
1 o" h3 ]( b" T* X' A& Mend

0 t( I8 L. R3 ]/ G# s3 t2 V0 ~1 d0 u5 N1 v
to do-trust
: w1 G5 a9 o! A' X9 K6 k' o8 e" kset trust-ok False
# h+ C% i% Z) k$ S9 E) Q' W5 @9 L9 F- W. o! u
) J; O8 @$ s; c  [
let max-trade-times 0
9 c# q7 t: C4 U3 w5 m0 Y( l- J! q7 Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  t$ b* u" p5 Z: e* Llet max-trade-money 0
) I/ f/ S% {' B( r4 p% f5 r+ Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
2 {; r2 J5 D& I0 V  E  g+ Slet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 J" ^6 t  W0 P& b+ W$ `0 N
- V$ f/ s* b4 M' u" ]% j8 m
+ v; a& F7 \" _0 S% b+ [
get-global-proportion% i7 J# w$ l4 J4 d
let trust-value% ]( r& K8 _0 M4 e
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)
4 B) J( C$ _3 B3 i' t$ V! `
if(trust-value > trade-trust-value). V1 I1 M" L0 N) N6 |$ ?5 I
[set trust-ok true]
4 z6 A0 ~7 n9 N$ F* t5 y& dend; H' Z; }, `9 P: M. X
) P9 B4 {, @8 Z/ P( m# k
to get-global-proportion& V7 Y6 ~4 c5 Z: a" L( {
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 S# V8 [" f% ^
[set global-proportion 0]  x1 U/ O" U0 @% p5 G! k
[let i 0, d! O) r9 }( E4 X  A8 R- f
let sum-money 0
. x1 \, }1 s- j: B# Twhile[ i < people]
. p; m5 P- U7 j* D4 J, C$ P[
! ^% Y$ _; g. }/ o$ dif( length (item i( _- V: S' L7 D6 ?
[trade-record-all] of customer) > 3 )

, t* B# R( k# F4 A. z[
! L# J" H3 r0 S# L6 F# e0 e  D; hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, I4 W! o3 f* L6 B  W]# _- t4 ^2 J" A1 l
]
. m% d- X) `' w2 llet j 0
  i7 d, Z' D1 tlet note 0
2 \6 }+ W* d1 Z2 L2 ]1 Dwhile[ j < people]
8 v% K# X3 d) s1 j+ T[
- L0 ]0 x% a) h$ Oif( length (item i
7 L' v) s8 I6 g# z[trade-record-all] of customer) > 3 )

8 }* D3 z8 I7 K% O/ [[9 H. G% Q. \  ]6 ~
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" Q7 b. j  B- p) O: q# S[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
. w- K" J0 J7 Y5 r* V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]3 b8 @6 j6 w3 I
]
& H. C+ g& m# z  c# N$ Z* |. d]2 r. i' T: ?- ~  T" w- c
set global-proportion note
7 y3 w7 l: u4 x) [, v]$ g0 T' S/ @5 I0 Y
end" \% ]" P& ?) o; ?4 X
1 m/ L9 J: E8 m" G
to do-trade
6 m$ P" E( L5 V0 }7 v;;
这个过程实际上是给双方作出评价的过程
% t8 \3 o  R% m! Q! x* s9 c$ Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 R( c+ [( h7 _9 X! ~4 {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ C: ?0 X' s/ D; s5 y5 Kset trade-record-current lput(timer) trade-record-current. j$ s( A# W7 _9 y: A4 U( i; f# p, I
;;
评价时间; J, D( O" s" K- \  J+ T. p; ]
ask myself [( U$ b% D6 T1 s$ d" [+ z1 Q9 l
update-local-reputation
9 g+ y* o" U0 h) N% A8 }set trade-record-current lput([local-reputation] of myself) trade-record-current" i1 V8 U6 g& P2 |
]
0 R( k3 g5 y2 ]/ U- B) O  Eset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; I6 @/ V1 j1 R% H* F8 v
;;
将此次交易的记录加入到trade-record-one
! J- Y5 V- }4 F0 yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ J# o8 R( ?5 N5 q- j( Klet note (item 2 trade-record-current )" e7 s( Z5 X$ x+ X4 s
set trade-record-current
9 `6 H: A6 {5 L(replace-item 2 trade-record-current (item 3 trade-record-current))
/ t4 w" j- k5 G) ?- C8 q  k
set trade-record-current) u. f1 Y3 h7 T' P; s
(replace-item 3 trade-record-current note); q7 P% a+ F& l

7 a2 R9 ~: z1 a2 }) j
2 A$ _1 B4 e0 C5 h& l3 W
ask customer [* T# K2 E$ e, {) Y$ s9 Q
update-local-reputation
- v- |0 _' u3 y8 Eset trade-record-current
5 c8 K# [" u9 r6 J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 Q$ N( k, [' E2 o]
, u/ x+ g( g: E1 S
1 k0 v9 O* p& E) h

6 e2 T/ }0 X( w" g9 @9 xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! I9 a3 R* ^( {& h! K

: @; W' d  B: {' P& u1 u- ]$ i' c8 zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" u4 }. T+ J* G6 H$ p( o;;
将此次交易的记录加入到customertrade-record-all' T: @9 V8 V7 q- t& k
end
+ G( C# H6 `; _9 S# O4 G5 Z. f  A6 C1 L6 T0 M: d+ D
to update-local-reputation
3 O* X- `; A' v7 z# X! Qset [trade-record-one-len] of myself length [trade-record-one] of myself
7 Y) f; ^# L, B1 v( n
0 D! I" u. r( U2 Q# V6 f& C7 n2 s. Q. ]  y
;;if [trade-record-one-len] of myself > 3

: z8 Z' s; [. f% dupdate-neighbor-total2 {& \% O4 f, N: _& A, i( R
;;
更新邻居节点的数目,在此进行5 U- j, _* H( J# j, D9 q5 `* f
let i 3# a5 i& w1 J7 Z+ `& F
let sum-time 08 K6 }  [$ Q: |; x
while[i < [trade-record-one-len] of myself]  E* A4 K/ e0 M" T7 }
[
6 y, z3 N, `/ w1 p" e+ fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! J# v0 L( d0 F8 v& I
set i! q' z) z& N  O" m; v8 g
( i + 1)
$ l  X# l6 b) W1 s1 s
]' i0 z$ K3 i* M8 S, I* |" d# ], f
let j 3- n% @/ }% S9 u+ F, q# h
let sum-money 0* |# Y7 N& u8 x4 b1 z1 B
while[j < [trade-record-one-len] of myself]% ]2 H/ |* O3 y+ C8 F
[% A7 r6 i8 S% K0 v7 h% z
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)5 Y- A  M* Q6 y* K
set j
' \6 f, F5 p: i4 ?" f0 |( j + 1)
2 j; S( L, ~2 S2 C
]& L. S0 h3 U3 T  Q5 @+ @% F. R
let k 3
" v" r- @* U+ H: h0 Plet power 0  I2 S1 U; Q$ t7 ]* z8 A$ }6 ~8 L
let local 0
8 Z" p7 C- f$ q5 b/ w3 n% `while [k <[trade-record-one-len] of myself]6 `; Z0 P! l7 i9 o6 O" A. G0 t
[2 I5 a' ]; _3 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)
& a. b; n8 a* \# `# w. Rset k (k + 1)
1 j3 J" F' e! o0 l2 H: X& Z]
* Y  j4 S! Y- o7 \% z2 q7 s) jset [local-reputation] of myself (local)
  r' D- s% w  n1 Q9 F% Oend
2 \: h) l) I/ }* K# q
/ S: M" ?" v# n% t2 f) ]! t6 uto update-neighbor-total
  Z, D9 g4 E2 h/ J' T6 C" B
: F5 v1 Q1 y6 D$ ]/ r+ jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]" a/ g: q2 H. K% Y% s& A$ Q

+ F* y! A7 Y$ j7 Y1 w: e

0 B8 c" ?7 O& Z8 c% |$ vend
( l# {! n( j3 N5 w
# @- Y2 A/ h; q( F" M) Vto update-credibility-ijl ; r  I/ B5 X+ j% L% T% i
+ Q( {1 _# q; U- A
;;
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。
, q! V4 U' J7 t; klet l 0
; `- `, Z* K7 a3 s5 M  R" Z; H9 iwhile[ l < people ]
8 O5 l/ f% v7 j1 U% ~( L1 a  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
  u6 K8 N& m0 a/ X" E! E[( R+ K# @9 h* t# N
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 e0 y" Z' v( u% K7 L7 g# H
if (trade-record-one-j-l-len > 3)* `& \4 ~! ]. ~
[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-one5 X9 T: v5 P6 l
let i 3, G3 s8 [# R0 f! [  x4 o
let sum-time 0! }2 O2 X5 w- _+ g4 c& [
while[i < trade-record-one-len]
  G' T# f7 M1 m1 G0 }' _5 o[5 s4 A+ v6 o/ [$ S/ V# j- G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# }! ?5 N8 L5 m4 n( J3 Hset i
) A) N( ^, W2 Z0 ]2 b3 X5 [( i + 1)
1 p" M5 ]" \: q' _! f4 B
]
6 Y3 a" F: i$ t* M! t0 X' L) ilet credibility-i-j-l 0
7 w+ c! G! {, y4 S) j3 e1 U- `;;i
评价(jjl的评价)6 b3 ~# t, W8 v& _5 P5 K
let j 3
8 L; }* R) z" A$ o9 A0 Flet k 4, D2 E$ b: n/ y/ T. U# s
while[j < trade-record-one-len]
, l3 i7 s( t; y6 ~/ |0 H" r$ z[5 Y& Q$ t# s  Y+ O9 y$ i
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
. S1 r8 C0 @2 ~1 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)9 r# [8 {6 H1 c# |! `
set j7 l9 g, V$ M# Y& g+ I& q
( j + 1)
) x3 _1 F2 U0 N3 U" ^- R' ?7 N! [
]8 D& @  t7 R; @7 G0 J
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 ))
& o- [' d1 V" ]: N
+ S- B9 [5 u; \  s0 D  ]

$ p, n/ n* X4 N6 [, ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  ]7 w+ Z4 N) w- o4 ?$ i
;;
及时更新il的评价质量的评价
, M$ S. o8 b3 W) `  Kset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: S0 s; D# P6 n7 Y7 ]/ M4 jset l (l + 1)
9 @* T% z9 h" [% D+ A9 H& E& _1 f$ p]4 ]; [$ z, o: ^- p3 K$ [
end. q1 z. i$ d; i# j9 j- l

2 C! K/ k3 S. a- u; v/ fto update-credibility-list
9 v1 g6 v5 N; U8 Nlet i 0
4 n; {7 N' N6 |" \7 n* fwhile[i < people]. h; r8 i. Y; O. f- G/ d! p" f
[* J9 O4 [4 \, j( ^
let j 0" N$ A: _# x1 \
let note 0
; |/ D! b0 f* K- ^+ `: z+ \let k 0- K( q: t0 Z+ I3 H: n" K9 f% d' I
;;
计作出过评价的邻居节点的数目
9 b9 G1 i. {- A5 g$ w- Swhile[j < people]
5 ]' E1 \2 }; p/ E7 }  V[
1 W$ a2 [  C4 y4 T3 `% @if (item j( [credibility] of turtle (i + 1)) != -1)/ `5 k7 }) _9 i, T  |) c- U- E
;;
判断是否给本turtle的评价质量做出过评价的节点
8 M( i9 \2 q4 T: g[set note (note + item j ([credibility]of turtle (i + 1))); ]% p5 m2 c. ]. Q( f
;;*(exp (-(people - 2)))/(people - 2))]
% V$ {! r$ ?( C" d
set k (k + 1)" D+ {8 S) W5 O1 ~* o) e: }& t0 Q/ C, t
]5 R( S; p( D! d* y" L  B) W1 C
set j (j + 1)
- j) Y3 ^( N2 ~) |]) V# E. C, U' M3 Z4 @, I
set note (note *(exp (- (1 / k)))/ k)
+ ^& i  r$ L% L4 ]! l4 ^set credibility-list (replace-item i credibility-list note)
& [( }  d# P2 l, q6 h8 wset i (i + 1)
  p5 E) r( n9 ^% v/ c* Z/ z]/ k5 Q4 M  B3 @
end
# S) W+ S8 h3 ~- r  {% ?/ U# g+ y$ }  R  I) f& m2 q, {( s6 w/ {
to update-global-reputation-list* g) @( L7 v# y4 Y* e5 l$ C8 U
let j 0# E/ H. B( V: i! K4 s
while[j < people]
" \4 s+ p/ t2 q8 V5 d9 k[5 ^# Y" u. U% v0 b9 ]. N+ j. R
let new 0, D5 I9 E; |! V, [. ^; H  U, c
;;
暂存新的一个全局声誉
3 r: x2 v, \3 L* A/ tlet i 0
6 m9 z2 P! O2 D$ dlet sum-money 0; _$ J& X5 J0 {% Q8 K1 i
let credibility-money 0
' l9 q) d3 t8 M9 rwhile [i < people]
0 I4 h# t$ @2 k! F[
- H8 w9 N' Q% z2 H" f+ i3 D+ Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( D! A9 M6 ~4 G9 \; g
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 P- U* b+ ^6 h' ?- A
set i (i + 1)! ?* [1 T: a  _, M& I0 R4 }# Q
]6 D* r) G% j6 S( D7 x1 _- x
let k 0, L: |5 t1 \1 X/ j2 R
let new1 0- I4 F# \4 N: @  A5 k7 e' ?' u
while [k < people]
/ G" l% F3 m$ [0 V! W7 O( l0 T[1 Y# d0 q: u! P: O; m( P
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)
1 F- V6 J& k. p  p1 g) nset k (k + 1)
5 {3 W2 d. M% o" P) G" [" j]: B$ E& y* [4 h8 O# O$ c) f
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, E$ y( p9 W% @/ o+ |set global-reputation-list (replace-item j global-reputation-list new)
1 T* c$ H% n9 i$ W$ P1 A+ {set j (j + 1)
* S3 w; G; [2 I  j; s, ^]% u2 j1 F7 M+ S, I1 ?8 P
end
7 x  m* c3 i( n: f+ o" @" u" J' {
% Z6 I/ \3 D2 K3 o- M( b/ ?% Y7 K1 H. T
* m: ?6 W- x  }& O) R4 {* ]  U
to get-color
9 H- M( U$ B( }9 i. j. h2 Q3 A" S6 p) ~% V$ H. U
set color blue

; }' s* S3 |2 e2 U4 Qend/ E$ T$ w$ R! E( E0 p( s

$ [9 M2 T: D4 |- L: x  _" s7 yto poll-class
' h, x7 o$ i- x& Y  N( yend
! b* G# l, t# f% \) S& ?: b- ^: l# m
to setup-plot1/ d$ m; T& V  }" j  J9 Y
# }9 a6 t$ s; |
set-current-plot "Trends-of-Local-reputation"
! a0 p) M7 f. R0 Q# {$ ~

" T$ K" b. F$ b2 H9 A$ ~- ~set-plot-x-range 0 xmax

: J5 R4 b$ Y6 b% V' c  T* }
- F, k" q9 `# r2 [) i+ Eset-plot-y-range 0.0 ymax
+ V/ ^* `1 G! l( A$ u2 d
end
' v" g$ F/ }( ^4 w0 j7 q
; I% W$ R! }; ~% Y1 vto setup-plot2) I0 ^) X$ Z" ]% T6 F2 {4 D, K
. \/ [* ?4 \( C& _( e  q* ~
set-current-plot "Trends-of-global-reputation"
  v9 X: N& D. i( e* ]/ t

- ~9 w$ h6 J) j5 Qset-plot-x-range 0 xmax
/ H* K8 _' H) Y" ?/ p

& \& x# |  h: U5 ^; i; n# A2 \set-plot-y-range 0.0 ymax

( R( x5 j; L  }% m8 k1 D* \+ wend
8 [( v# H' N! R- x- T% q1 r/ B, {
! z9 x: I" _& P1 cto setup-plot3* n' x) u8 J8 b6 i& j- e
% d' X" @: g& n
set-current-plot "Trends-of-credibility"

6 c  ]/ J) [8 ^: l; C! [4 Y. D5 @
# c% P9 T7 _3 T0 oset-plot-x-range 0 xmax
+ C2 b1 Y' j& {+ }+ \

+ V% ~' ], _8 b3 c/ Jset-plot-y-range 0.0 ymax
* _. s  }! o3 W# A' ?
end" [; [  Y7 v5 t) S* A" b

4 X1 E2 C% p* Kto do-plots  x3 f2 |, ]" a- @5 \2 O# P2 `" _
set-current-plot "Trends-of-Local-reputation"
/ o! J, k/ ~/ k- Yset-current-plot-pen "Honest service"
2 ^& A% z7 p7 @9 ^end
1 L& S# M7 }) o" ]- m$ b0 Q
. g* f' u5 t$ X4 G7 P' `) m[ 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.  I+ u( d  t& b# b

4 f/ K0 w( `) o- i  c8 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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