设为首页收藏本站

最大的系统仿真与系统优化公益交流社区

 找回密码
 注册

QQ登录

只需一步,快速开始

查看: 18235|回复: 10

[交流] 关于turtle的使用问题

  [复制链接]
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:
: K5 x8 _3 c( y* L5 L& tto do-business
3 X$ }- _" k- P& C6 a2 ~0 W rt random 360. G" j. p: F" _; K9 D7 E* {
fd 1# y: p5 m! V% H& K' x2 `, f0 ~
ifelse(other turtles-here != nobody)[; Z* B9 Q! g% j+ W1 e  [* i
   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.
1 x' \' z) k5 r: d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 K, r7 \8 Z1 R* z6 y# I3 B# x0 |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( D+ q' b+ @8 a; k5 a$ N   set [trade-record-one-len] of self length [trade-record-one] of self# ]0 v6 a. i' E: x5 J
   set trade-record-current( list (timer) (random money-upper-limit))6 q  @4 S7 e& A* B
$ X: o" `8 o& R8 D* X& a! Y# H2 x: L
问题的提示如下:
% ^+ W" ?$ |3 p  }5 {& O
) i! G, p$ b" Y1 |) D, ~9 @+ Q* Werror while turtle 50 running OF in procedure DO-BUSINESS3 D, J. d0 P. [
  called by procedure GO* W5 T! t$ X* f+ C" w* |8 n6 M* T# p
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& ^( e/ p5 d4 W$ H2 @" H5 c
(halted running of go)
* @$ q* b; @1 J- C* T; U; D8 A2 A% p0 Q& `! I) W( T8 {: @
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
3 q3 @& ^) q# d' ?# s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.

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x

评分

参与人数 1仿真币 +30 +2 收起 理由
booblu + 30 + 2

查看全部评分

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* ?2 f! w8 r5 x# n6 ~( S7 X3 v& R
globals[1 [4 M8 c: y4 C2 ?) R
xmax0 z5 v. A6 F" z' j
ymax9 ~4 Y7 I6 Y0 c3 d& o
global-reputation-list
4 f  ~5 h$ {$ H) U' A; K- C$ h8 h& V# a4 |3 [
;;
每一个turtle的全局声誉都存在此LIST5 `* }' R: d0 s4 T6 |% R( Y
credibility-list0 S/ _) F. u3 }2 g  }% P, L
;;
每一个turtle的评价可信度
" X8 G# m6 q5 x+ Jhonest-service
8 Z2 l7 r" E: t7 A- S9 B6 B- Bunhonest-service
' Z7 Z4 P( Y% h  `oscillation
! r9 R+ b  |/ y& z" u" _7 drand-dynamic
' s" f% F; U$ W' m2 \! m]2 f8 C) B8 B0 N0 b) X7 J2 b) h: ]% d
3 t& \4 J& `- v: Q3 r7 R% r; p
turtles-own[
  c& V5 f! t; Y( o1 Z. ~- Ptrade-record-all7 W5 Y5 W8 `, U: V. \
;;a list of lists,
trade-record-one组成
) C  l1 G# {. n0 l) t- ntrade-record-one  d; n5 o! r! T' [, [5 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* [3 Q' V& @0 G" W$ b/ Q/ i
  B$ m0 o4 c: z
;;[
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]]
; t1 {% c9 C) {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]3 K) h. l9 Z" s: U) v
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list1 U. R4 P& {1 a, T( h- C
neighbor-total+ r( L* B  m/ {" {3 |
;;
记录该turtle的邻居节点的数目: y) |  U/ R! ]0 ^6 ^
trade-time; ]+ b2 O6 H3 c1 T' O
;;
当前发生交易的turtle的交易时间
& G" E4 g# u$ N8 o7 U; c) w3 E1 {5 Iappraise-give
- `8 ^! k9 T0 Z;;
当前发生交易时给出的评价
- R: a! v3 d; H5 x8 M6 Wappraise-receive
' ~: I3 v, c% ~' v0 _;;
当前发生交易时收到的评价
) R( i  Y6 o6 [. D4 ]appraise-time8 o7 G& R( s1 Z; p  ~7 t
;;
当前发生交易时的评价时间1 T% N6 M7 t5 M+ B5 F( D9 S* \4 c/ K
local-reputation-now;;此次交易后相对于对方turtle的局部声誉) R9 }' O" P# `3 p1 t
trade-times-total
9 V4 \. N$ ?. i; j7 R6 `;;
与当前turtle的交易总次数3 d1 ~$ z: Y7 ]' B' T3 v
trade-money-total. T, T4 s6 _/ Z% y: b4 e: }' `( F& B
;;
与当前turtle的交易总金额
! J* U: N. V/ ^+ Xlocal-reputation
. ?+ I2 w& U: Y$ i  Mglobal-reputation
- j: f- {. s7 Q# p  ?credibility
% `% D9 Q  {! _, v;;
评价可信度,每次交易后都需要更新
, B1 i; E5 Q2 bcredibility-all
& l; `" o# ]* f6 Q+ ?* m6 ];;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
4 i3 A" t, z9 v: v: b) W! }. Z4 ]  f+ }) W; ]
;;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  F! s: V2 f  F( p3 V  Y0 f+ d
credibility-one! s1 n6 P& K! U  g! N& ^
;;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
2 e: \: a, F$ b7 h# b! N2 Cglobal-proportion$ C/ J7 G. A6 o  W
customer! b  l, a; S' m+ s
customer-no4 R6 \" @( o# K1 O! U
trust-ok) Y4 i5 L# K' O0 W' s9 ~0 J$ m
trade-record-one-len;;trade-record-one的长度  z% X1 H; @' \; g, g
]  k, |3 N% K: U8 ^& w( B6 j( C

& Q9 Z) h6 z. H( u;;setup procedure0 Z% ^& y$ W: m7 j) n

1 s$ g* y( h* E* z3 ]; x6 j$ Fto setup% f. v3 F! ^: W! J0 O& b9 B2 U6 J4 U
. {8 k% L; h! u7 ^8 }, d
ca
# a6 n: e$ {% c% b0 C  ~$ c( H
1 K9 n1 g* @1 h
initialize-settings
3 c9 m/ K6 f4 Y7 c; r) q% j  a8 x

) K0 N8 }' @! n" q9 g) r$ q0 l( jcrt people [setup-turtles]

9 ^9 G9 n" W3 |) E+ x! W6 R) Q! ]: {4 ^( o% ?
reset-timer

: \9 j* [8 L! B5 m' a7 h7 d3 \, z& l3 V+ T  F
poll-class

% r1 p+ P+ p' k9 S' ], d2 J; ~4 C9 @& N' m9 d  e
setup-plots

* B& q2 Y$ J( N* H7 [, J* K8 D1 M$ u; K; z& [+ e. K
do-plots
1 w, Z0 U$ Q. Y' ~
end5 y2 h9 Q$ K, N/ V' H9 S

- s0 j* o! P% fto initialize-settings
. o9 c" l6 O% J$ U  ^- c: c" k3 x+ }, T2 W
set global-reputation-list []

, I+ M' z. H9 O2 a- |8 ~+ I- b; j/ n- _9 t
set credibility-list n-values people [0.5]

: m$ f: n+ Q8 |0 ?, e" b' k: y9 G
. l% U; `6 K  u. b1 c  m' cset honest-service 0

2 k, n$ X) b0 z# Q" G! R
" w. v+ U+ Q, Iset unhonest-service 0

9 W# _8 u# A& ^" \% [  [
  D& M4 T* U! Xset oscillation 0
) z/ Y2 D  }: x  E- t

' b- Y: P# p/ {: Fset rand-dynamic 0

* m$ G& A' Q2 @" F8 |6 r* eend5 q% B; q- V' O, r0 f) |; R; F

/ Q- c4 _6 R1 i2 gto setup-turtles
% ^% L9 w) }$ f9 Jset shape "person"
3 I- V4 W  o4 Q" Q7 t+ V: E2 }( h* Usetxy random-xcor random-ycor
1 E! J8 F7 \" b! xset trade-record-one []! I; p& J: J, s# l6 {7 ~

) X; D+ r7 T$ j( ~; ]/ x; Nset trade-record-all n-values people [(list (? + 1) 0 0)] ( h* G6 a; Y1 l

$ W% w/ ^, |8 m) e" v; b1 B# @set trade-record-current []" X# Y( Z3 X# n1 A
set credibility-receive []
1 U2 |" p3 P: ^7 [) vset local-reputation 0.5
, b1 N+ l. P) q; W) x. `7 Rset neighbor-total 0
+ e7 B$ a2 t5 T# N0 z& i9 q' Cset trade-times-total 0
5 c* U/ u8 a  c- U- ~! z; Vset trade-money-total 0
+ m9 p' X6 x$ \1 Tset customer nobody
) n: y/ p( o& kset credibility-all n-values people [creat-credibility]6 A; l7 v4 ~  V! `; P, E& a
set credibility n-values people [-1]
9 P9 T8 K! X* J9 }! G# F( ^get-color
& O9 F' t3 f6 M, U+ t' }
3 d9 E4 S- ~4 ?0 L% o9 z: E
end: c$ \% Q5 E( m) R$ \$ [/ ]( }8 ^# g
1 ~7 |& c' n% f6 I2 ]
to-report creat-credibility
$ s  z) l4 `+ e, w: xreport n-values people [0.5]
# Z* p: \0 y4 j% [: i6 E5 rend
! T7 X3 M" h1 q; u
$ [1 U0 T& {1 D  v- f! ]/ R& pto setup-plots$ t& g$ I: `  H) Y9 X
- @1 f) s# f5 \! ?
set xmax 30

2 B0 G! f2 ]! {+ f* l* H
, N5 x% d/ [1 @; f! T) o. uset ymax 1.0

! J' F0 e. g( d. D! T- m5 c0 t% V, s) @; O# R( b
clear-all-plots
9 \" J, y& K7 G6 O6 q

9 n/ C# U0 Q5 s  ~setup-plot1

$ _8 j% M% }3 Y8 _8 l9 u" e0 v
3 |9 Z: }( O  Osetup-plot2
5 P; h( ?) E. w( @

7 d) T/ p  D* ^" I/ |4 o. y& vsetup-plot3
! l$ A" O& g; m: @& z
end- u2 m' p+ y2 T/ H7 p* H( w
' n. p( v+ s7 r- L; Z
;;run time procedures) ^5 u- J0 Q7 S7 M; l

( j3 u; u7 a* q2 Q) I/ B& h! ]to go- r) j% `4 o% V
  _5 C3 ]( ^3 r
ask turtles [do-business]
, f' Y$ L0 a+ s5 b) Z* h
end; r: ]- @5 t* i( ]

5 B9 ^1 F" \* f7 U. Q6 jto do-business
7 E& L+ U# Y8 y4 Y
* [: R8 y" p( Y2 w8 x
/ P: E# [4 R; o% |2 X7 s3 \
rt random 360

9 @+ N8 f) f# R
+ n: P2 Y2 ?5 M$ p' D& Bfd 1
, e8 s- u1 H1 L% L& V# @1 ]) X
' S' Y3 o4 o6 w- y' ?+ o  |
ifelse(other turtles-here != nobody)[

/ L) o5 e8 U' h4 Z, j. f/ s" f  @- F# u# n4 Z7 ]1 Y5 U
set customer one-of other turtles-here
" P6 i" `# Y5 t4 f5 e0 l( y

7 f, X8 _) x1 {% U+ Q4 O1 I;; set [customer] of customer myself
  @5 o% m: R# D7 b% W& a

1 ]- U& R. _# j9 \" nset [trade-record-one] of self item (([who] of customer) - 1)
4 A" Z8 A* D1 S3 e- F[trade-record-all]of self4 u$ R/ w  [% u1 x2 p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

' ?) ^, u- w% z( t8 r( \' i9 r- M# `' D& p
set [trade-record-one] of customer item (([who] of self) - 1)
: B  @; S4 I6 T) t- f5 X4 w6 O) L[trade-record-all]of customer

3 `) f) O. P1 T" o3 L$ l
3 {; Y0 O* ~+ ?: q& y' fset [trade-record-one-len] of self length [trade-record-one] of self

/ ^! P# s; E7 r1 Y; ]0 ^
9 J; t( D; A/ m& A; O1 A4 h- Kset trade-record-current( list (timer) (random money-upper-limit))
9 S+ A5 ]  [' O$ G$ h6 s1 e; i

( a' C$ G* |3 F2 w: ~; task self [do-trust]
- f+ Q7 N9 ]6 ^6 _: q, c;;
先求ij的信任度
3 O! s* n1 G8 N" Q0 B$ f0 |8 S2 `. G3 Z4 M
if ([trust-ok] of self)
4 h0 h' S$ B) \;;
根据ij的信任度来决定是否与j进行交易[% Z0 n- j0 [, r' d4 Y. f- r( ]2 [8 P
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ I4 P( B" S0 Z% i8 M' }3 v
4 B5 _; X1 L( M) t! Y[

7 v$ }1 B/ G; n: \  m/ T% ^$ `: v8 C7 r; |! O; C) }: q) s# x9 L
do-trade
) `5 R# {9 j* A3 G
& Y: S! J- t" l' L; L
update-credibility-ijl
2 m! b/ ]! V5 a: `9 ^. F3 F* n
8 u* c! S1 ]4 u
update-credibility-list* e2 I( }; q7 L" w

3 @6 C& g: X7 \# k6 P9 {
8 i1 u3 Q3 P' o) D$ H# Oupdate-global-reputation-list
, @! F5 Q9 C7 h& h2 W& X+ o3 j, ]

  w$ f: E" n0 `+ Q5 Lpoll-class
8 D& `1 C# B8 X: |, G$ F4 g

2 b3 ~: o9 u" M6 Tget-color
2 Y& Q5 {4 N+ q2 V9 ]3 B% u
; B4 H' X" l0 M3 ?- O1 D( d3 k
]]
% o" ~( T1 T3 Z+ `# m3 _: k& M3 s
% B9 K7 N- j* l0 t;;
如果所得的信任度满足条件,则进行交易
3 x. a0 W3 `4 f3 J; l/ p; B2 X6 ?( U' \# A% N/ N
[

8 f9 k9 S' r0 m9 H! l* A5 u1 N/ y- Z% k# i! I! a- s* g/ x. C0 L: f
rt random 360
6 L# o3 P1 _+ ]6 W; H, Y

: ], w( ?7 M3 E# Q3 g8 @fd 1

7 _# M0 o# V2 n% M+ e0 {+ @5 g! i. D1 p4 {4 ?* y
]
! [  F2 e: k( p# g, \6 S

- Y3 \6 q9 ^6 S1 q$ Tend

) x! k. O6 E6 H+ C
5 I3 f% G1 F, C% w6 X  X- Rto do-trust 4 x; G- ~" K7 [% h9 U$ Q0 t
set trust-ok False1 ?  w# O$ t) F% c) `  b

6 w& P% v1 }- |5 q* x0 ^
+ Z- f' g5 k9 r
let max-trade-times 0' X8 Z7 K; T4 `4 |
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 g2 |6 S. h& h' A- O% B2 Zlet max-trade-money 0" G4 Y+ l3 q" G8 }* E1 q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 r3 c) k+ W! g: j' H) Y* r* a6 Nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" k# z! H3 S' \6 I& Q) e2 ]" \; {  P: f, \
% C) B, v( E6 R% V  d
get-global-proportion
, e5 j. {* s3 ?& v% @let trust-value
/ j' [. |; I! s8 K/ `5 \: Wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

# N5 C, t. l7 S, E  o- H3 wif(trust-value > trade-trust-value)
; T6 E- F( W3 ]( |[set trust-ok true]
8 \; W! Z* o5 o# n. g% |7 O( b9 ^5 Send
6 {1 X5 q. V0 I: Z& Q
# J% H: Y  g+ v6 x  Y' a4 p% }to get-global-proportion* ^+ v! z/ I; |7 }4 O
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); t! i5 z9 W/ R
[set global-proportion 0]: X; E/ A2 N; i% J
[let i 0  J) m! B* d* ~
let sum-money 0
0 m# T* B' L4 q4 @2 q2 B! ywhile[ i < people]
) N. F2 e2 d% `( A' Q8 `[6 F: h1 ]. F$ ?% t& u9 _9 J5 h' R
if( length (item i
& K$ ], u- ?7 k  x[trade-record-all] of customer) > 3 )
) t! I+ e  I, d# G8 j
[
8 y9 _  X/ D9 _5 Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))0 Q+ E( |$ i5 u/ O2 }
]
# o; E% F' v8 J9 N  m. U]
1 d( X% S/ _( R1 Slet j 0
' G0 f2 }6 L: z6 b% Z# d- |let note 0. }" |2 z/ |7 P4 R* U3 J
while[ j < people]
8 ~: [2 K* E! }' |' h! f7 R[! ]  g% E* z( H# o
if( length (item i. w' Z- |3 H. D0 W+ @7 s5 r
[trade-record-all] of customer) > 3 )
/ r8 ~/ f1 _& i& J# w- G; [
[
" W$ E6 }$ w3 o) O1 D: h& [! vifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
  m( q3 \6 _0 B( R[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) ^8 }; [# {: j# P. E[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 q/ R0 Z0 B) T8 g. z
]
0 ~2 K1 e" `( x1 @]- L" Y; ~. |7 u5 @7 g
set global-proportion note4 q7 F. u2 z7 e. X
]
, _# i, x7 Z9 dend- H/ z- W$ E& q* k
, Q3 A6 _+ r9 |4 P% O0 {( {+ J
to do-trade% B, ]' J9 A) Q1 g& i# u
;;
这个过程实际上是给双方作出评价的过程
" ?( m! k$ `: ~& `7 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价2 h8 d* u% m8 j4 ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
/ m8 V% _9 N5 N" Q1 H: |1 Hset trade-record-current lput(timer) trade-record-current
2 d% o4 X% K. y: V;;
评价时间
! m! l. F" O' P& p9 uask myself [( F. }+ P2 K# _3 O9 R
update-local-reputation6 {1 Z# P% ~1 n6 v+ {7 k) i2 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current
: P- }1 c* M- r) i]
1 K& v" y$ L0 T( t2 ~$ t8 B0 Qset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. j8 w7 F2 T7 @  f
;;
将此次交易的记录加入到trade-record-one) o* a2 ~9 d. T' b4 E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! _1 Q, Z. n+ o5 a+ ~7 r. U
let note (item 2 trade-record-current )
) m" G$ N& X+ d3 X! ^( r' k1 xset trade-record-current) s2 s1 \2 b) p) c
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 f/ x8 m4 D; P+ g% Sset trade-record-current
/ c* ?. A3 M0 v. W( Q(replace-item 3 trade-record-current note)
: x  @* D; n8 R6 x! A/ A. N( c: g; I7 @( f: m* W

3 H) d% a+ V1 K3 {ask customer [
; i( n+ z  E- {) bupdate-local-reputation0 F3 g' v# T( z7 ~  u
set trade-record-current" l! O1 B4 `7 H, x  ~( P
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: @# Z. g5 f! p]
1 h! @( I9 e7 I# y! w* p/ r7 `. ?  n/ ?

% P. }. T& B' M1 q$ r. k  Oset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
4 M" f0 r# a/ e, ?; L/ E  _& s' A
0 n& M) \; w' U# {* u
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- X5 {/ t0 M5 V+ ~$ i4 m# K  {  p;;
将此次交易的记录加入到customertrade-record-all
& s0 ?7 Y9 W- T; ]7 E, ~. Gend* K' T; d  g7 H4 Z  O; N

! {3 B+ O* z. W3 G* g) `- o# B! G# sto update-local-reputation
' [. _9 O# R8 W* K+ j* m% Uset [trade-record-one-len] of myself length [trade-record-one] of myself+ D. m7 r/ \# m( E) O

! \2 p5 m+ `8 K  g5 w9 t
9 C* V# v1 T. I) ?' u9 i: w  G;;if [trade-record-one-len] of myself > 3

6 C: B" L2 C) O. G8 }update-neighbor-total' E* j/ K# S# z' z
;;
更新邻居节点的数目,在此进行
% j2 P( y/ N: r% {( blet i 3
  g) ~( K; `( u3 v! U3 glet sum-time 0
8 u! a% Y3 c7 K+ E2 ewhile[i < [trade-record-one-len] of myself]
7 a7 K, h  G% B( U: b- w- }- _' y[8 X# l# h) x& v- I0 c+ T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 D( P! h. b* b4 a. w3 C
set i
7 C  h# v, {$ X+ u, P8 j5 a' w! ?6 J( i + 1)
2 w7 f4 L2 F) Z) p1 n
]2 B* N; [$ \  `/ Y* Q/ K, c- x
let j 3
7 ^  E1 Q* W' q  J3 ^. q, ilet sum-money 0
% F7 j) w: k2 z: g. Q0 r' awhile[j < [trade-record-one-len] of myself]
  m& P& W, E# d+ w[9 l* d7 e. W5 I
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)3 f% q  J9 ?; z  \! U
set j! m. o1 D6 `( ]0 c4 O5 Y) {: ~
( j + 1)
; A# D- [: ^( g" J4 X
]9 E  B/ q+ |/ O1 w
let k 34 y! Z$ f% b2 p$ A% [7 U5 l
let power 0$ [" F0 j& o8 A% W% f- P7 j
let local 0( @" E# K' ?2 {# U7 Y- e9 \
while [k <[trade-record-one-len] of myself]/ d! Q* ^  d0 a. d# ]0 \
[- R1 ]/ M3 D$ |' Q5 n" _
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 H5 c, Z- r4 P/ B0 k8 v
set k (k + 1)
$ e8 u" x8 |2 E, U" C# G! n  x4 []
" p9 A9 {0 _+ M1 Z' K2 k8 ~set [local-reputation] of myself (local)
# U: P5 ~$ i# M% Zend
. N+ q6 l. [0 j- Y( M+ i2 M; b
to update-neighbor-total
* r1 j! p6 l( R8 w3 P* n: G) c2 y( u# g, l+ i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ A' o/ S  T: N
) r, M  a# P1 g5 P
+ c/ V% F5 r8 u$ x" [3 l
end8 j0 X5 ~- p5 \3 v, u( l7 ?
% H' o/ v+ o9 H) l: P
to update-credibility-ijl
9 g+ `. O- s% _
" C5 F4 A& \& d  @7 |;;
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。  F2 A! O: p- U! w& b. A5 ~
let l 0
- k. I% n5 k' l3 i) `; Pwhile[ l < people ]6 t5 {( L/ s  e5 t; a
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价7 b1 J( }) ^- R+ m) ~, ^
[
" w5 w: A# a$ x' ~. tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* }! C" I# X9 kif (trade-record-one-j-l-len > 3)2 y) @$ M/ d9 O% l; H# H
[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& y3 D' T! [/ w  R! A# B7 d
let i 3
3 B& V, L) y9 ?9 nlet sum-time 0* p# X; A. s) G+ {* D7 L7 W; `
while[i < trade-record-one-len]
4 m: X# ]4 M- b. c9 F- ?# ~, Q5 o[! H7 G, G: q  ^" y
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 ~+ P  u0 [3 F3 J# N% [set i0 ?, q; h" N* I9 c' o
( i + 1)

: S' P/ ~% U. K, |' c]
7 ~+ v2 Q/ g6 s1 V5 g( a! Olet credibility-i-j-l 0" M7 ~" r; o, P  M8 R1 s
;;i
评价(jjl的评价)
- S7 s1 c( J( Tlet j 35 G. q  ~, x; d5 E9 p
let k 4
* L7 y! B7 R0 nwhile[j < trade-record-one-len]) |: G/ E8 A0 P( e- e
[
1 [+ i, _2 ~0 k  [+ Bwhile [((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
( d% U: w9 m) w. W: t( Uset 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)0 o) h5 d, c( M1 E. \& C
set j
2 }1 ~4 _, b% P4 y7 }* Z) J7 Q0 r( j + 1)
' a4 p  {  M) V1 \" {" Q
]
( A2 s% b; E" W  Q; W+ D+ Yset [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 ))
4 U8 i7 \+ f: c2 q1 I  N1 t0 [( {0 h# a8 @
0 h. @& Q3 u( I9 m5 F5 J$ h5 e/ E

" W2 k: |8 Y3 d( _" llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- ^( H+ P1 h9 d, D;;
及时更新il的评价质量的评价
  |; G0 i& e' T( U6 Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# o5 M4 P/ e: [1 i5 ?' h
set l (l + 1)+ Q  [) D  D$ B- B% A& q
]0 b5 ~5 L' E+ r" b$ l
end
+ r/ V# w7 Y& g# A0 K% E" m# e  m0 S
to update-credibility-list( @& @* r! Q8 H! H4 G
let i 0" c1 d3 k& w9 Q5 F: o
while[i < people]
' o+ O3 @6 Q5 L5 e6 |' G" }$ k3 O: O[
% i$ a6 Q7 A3 |/ [* F' dlet j 02 ~0 A) ^  [( r/ u
let note 07 T3 U2 l! L. ^& e1 ^
let k 04 ?4 F( f1 a* U. e. B
;;
计作出过评价的邻居节点的数目
0 W$ D- z6 E" zwhile[j < people]
9 k5 |% A) d3 B7 p6 d[6 r' D/ p; N$ h6 y; @- C- h; r
if (item j( [credibility] of turtle (i + 1)) != -1)
+ _8 e$ K: d4 G. D5 ]* J# N;;
判断是否给本turtle的评价质量做出过评价的节点
% w/ m. U, d6 X[set note (note + item j ([credibility]of turtle (i + 1))). N0 T6 r( x) w' y3 G" m
;;*(exp (-(people - 2)))/(people - 2))]

8 o! A( b# Q8 l# j( F6 `set k (k + 1)9 |5 A2 E  R2 A% G$ |; G. s. l3 q
]
  v5 P$ T! K; X& Y- O% Xset j (j + 1)1 f. k: U3 g6 D$ K' g9 p
]
5 T3 t# ]9 _6 y  L( t. |9 Z. J* Eset note (note *(exp (- (1 / k)))/ k); M6 {, X. p! m, h& T  d7 v' ?  c
set credibility-list (replace-item i credibility-list note)
% M9 i+ V0 X3 w! n- p, o: C! kset i (i + 1)
) r" A3 j9 G% }$ M$ Q8 T4 k]- ~0 U6 ~; T( L4 P
end8 }! G2 K0 g) i; H" y1 Z

1 q8 ~! h2 |  }to update-global-reputation-list
' N8 v5 V6 t5 B% f- ilet j 0
. x0 Q, |. n8 d! u. x# Ewhile[j < people]: I  r) D- |- O# F/ ^/ V
[% t' {  O1 A* e1 r& _! \9 ^
let new 0
$ O9 ^& s3 F  s' z/ q" \. V+ A1 t% s;;
暂存新的一个全局声誉
% n2 e/ F$ N3 I; }7 v/ x/ i. alet i 0
$ W3 ]# X+ \1 p! f* vlet sum-money 0
  \0 c6 B5 n& ?  N7 @" hlet credibility-money 0
  `" q8 T/ g0 D5 I# q9 [while [i < people]
6 ]2 C- ^$ j% x. ~[5 h3 v! X  i; O" E1 K: l
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))): [6 q3 j3 K8 E# e0 m: p) o6 S, c
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))( t" ?, G5 h/ G# w
set i (i + 1)
) d) b( g7 B! [% }* t: S]* ?) }" ?2 r/ i$ `7 x5 Y
let k 02 H( i: O% ?- S+ h0 R4 Z
let new1 0- o( `2 U5 h0 G  E4 G
while [k < people]
1 a2 V: E6 G$ }, M[
4 k! |" w- W  uset 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)6 ?0 d2 H. V2 C; s
set k (k + 1)3 {% m" u" b* a9 o7 D7 A& P* j
]% K& \2 w4 c5 Z- v* H( {9 u0 H! l
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# M" e9 P2 N# w! oset global-reputation-list (replace-item j global-reputation-list new)
* c+ }, f; K# c3 k7 x5 Sset j (j + 1)% E* W2 V. ^' X* s/ R' \) L, X5 d- N
]
; n8 E$ f  z9 V, F$ Z3 Rend3 ]8 e; Q/ f5 [" t
+ Z, ~6 ]6 C$ b9 m) z

0 V6 O* a; a& k6 y. ?: F- Q0 F/ E6 y0 w& m( i
to get-color
: D& {" \  ~5 r( ^! Q9 v5 @" {
set color blue

# Y) h( Y+ Z- z! U8 I4 _end) q. K" i; l- |9 h0 s
5 @& m' i- M( g! O- R
to poll-class
0 W+ t6 a' J+ Xend/ t2 a3 E  K6 k4 x( L" Z2 n- C
# C# G6 j( w8 {: f5 T
to setup-plot1$ F2 H9 G3 k* u) U) [
' o4 G- n# j, C/ |6 t
set-current-plot "Trends-of-Local-reputation"
2 R7 I: Z+ |! e: @, l$ h( j4 G

) X/ {, x1 _# Oset-plot-x-range 0 xmax

' F0 m6 F9 t$ b. W9 P
- @0 r1 \' Y+ r  H& n8 O$ n5 N  X7 ~) mset-plot-y-range 0.0 ymax
1 j+ g0 o0 c8 L, T2 ?
end
& W& d$ @& e; a6 H9 E! W3 c' P4 z3 W3 P* H2 Q( {) H5 R
to setup-plot2
% [: t8 A6 y2 _' L2 u9 r( n$ b
  D  i5 W! h1 c0 @# A+ iset-current-plot "Trends-of-global-reputation"
9 ~- [2 e7 T) z) o/ ]7 @; _5 w5 p

! T7 h. n1 K" {set-plot-x-range 0 xmax
: f& n/ S  A2 |3 j9 u( R! Z7 j
4 J3 q$ k  j7 u7 i' M8 f. ^& z. r
set-plot-y-range 0.0 ymax
$ |/ N4 R. U& F, G0 x  X
end1 \& |) z) p& p" g( X, M

! m. J' ^, K; h7 `' b9 Bto setup-plot3
, z$ }& B- N& V, n
3 u+ i: a+ J$ Q$ Z0 I6 Pset-current-plot "Trends-of-credibility"
% A3 ~( @- m2 S- h

# A5 Z* h2 B6 O, n1 a3 d# @* Sset-plot-x-range 0 xmax

1 x9 ]8 n0 F; y( a7 o0 V$ v" ]/ Q
! z- {  z6 i( `# S3 tset-plot-y-range 0.0 ymax

) `9 l: A: I- X( r  m% fend/ i' I4 X( S+ [" p  r, D. R4 Y8 [6 r

/ g% B) V5 b+ ^5 U/ E& Bto do-plots
- q( D- B: N# x- r+ Kset-current-plot "Trends-of-Local-reputation", U( G$ S$ T' [7 G% o1 [
set-current-plot-pen "Honest service"5 C  a0 O: g; w3 u! P3 [8 D
end
6 n, A' \7 n8 A6 W+ j- [& E& @( f7 F; J! ^- ?% C
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

本帖子中包含更多资源

您需要 登录 才可以下载或查看,没有帐号?注册

x
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.' `* F2 _7 N1 E& M' u

1 c9 ^  l( H7 h# x6 R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?
您需要登录后才可以回帖 登录 | 注册

本版积分规则

QQ|Archiver|手机版|SimulWay 道于仿真   

GMT+8, 2026-9-7 07:00 , Processed in 0.027511 second(s), 17 queries .

Powered by Discuz! X3.4 Licensed

© 2001-2017 Comsenz Inc.

快速回复 返回顶部 返回列表