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: 14544|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:# f3 T( V1 {2 s# t' N3 L
to do-business
, e- S5 o8 k2 U! w7 k- M rt random 360. b" ~+ A* @# y1 S( o4 e/ r
fd 1% _& S/ I# J$ N8 e
ifelse(other turtles-here != nobody)[
% D# [* y$ e. s! b5 B/ 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.7 e8 S; ?2 F. G$ u5 ]. {* d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 ]) {' n, R" ~   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& ~* e& r2 ]: y9 _+ d* X7 I4 @2 F
   set [trade-record-one-len] of self length [trade-record-one] of self
9 O+ W2 W; n8 t4 t- }   set trade-record-current( list (timer) (random money-upper-limit))4 B0 r1 I. M8 {3 N8 i5 v
+ u0 z7 D" z8 y- W7 J5 Z+ z
问题的提示如下:8 ]- G5 I& h- r) _

3 ]+ _" c9 o# S& Eerror while turtle 50 running OF in procedure DO-BUSINESS
  u/ z& r* T1 h' a4 h  called by procedure GO" K+ g1 e. h/ ~  ^& q* c# h* x6 h
OF expected input to be a turtle agentset or turtle but got NOBODY instead.9 o3 w- c# B4 t4 q0 g
(halted running of go). H3 B  g9 B! n" D' F; D
. A/ T( x' g" ~" \; I" Q. U  v/ _
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~~! l7 I9 k! B( ^% c; H+ 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
- d' S3 |3 K5 h, |1 gglobals[
; ~9 U5 I- S! P" r6 zxmax$ Y5 u. @  ~# e( q/ L3 n; n& B
ymax" ]# y) q, t& b. c, x7 r% _/ m
global-reputation-list: {% n) V, ~: C: h; N9 U

4 T$ T+ h& U1 N: Y;;
每一个turtle的全局声誉都存在此LIST) i# Z; Q; h% s
credibility-list' P" r) \' [; T5 D) N. S
;;
每一个turtle的评价可信度- U2 l9 h" C8 Y- S3 f3 u( \* }2 d
honest-service
1 y$ g8 d" [  G# V/ Qunhonest-service9 |3 F- U. e* Y' h2 I
oscillation
/ P8 a2 t7 d* |! y5 ^4 ^9 p+ Qrand-dynamic6 N# F" X: ^: s8 {
]/ R) @: T  S' G1 h2 F

: U; _% W6 Q* j1 {8 C* u5 z# p% Xturtles-own[
8 N& h  _+ i2 ]2 |" A0 O# w) Ytrade-record-all
( W8 O- Y0 C' w;;a list of lists,
trade-record-one组成8 Q- b" J' {. h1 E& h9 o' M
trade-record-one! F7 k" ~8 h2 G( f/ u# m0 o
;;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+ O% a$ P8 N# X  d4 \
, ~& ], j* d7 J; s" E$ h;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]' H  X; x. t9 t4 _. g: E
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 K: F9 u# p* t8 ?8 b6 icredibility-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
* ~' j" R0 ?) n: M) jneighbor-total7 o8 V. v* l2 }; ?& k  Z7 I
;;
记录该turtle的邻居节点的数目; M' j2 u# U5 C0 e: C
trade-time* l' ^+ Q+ ]; X% H- w- D
;;
当前发生交易的turtle的交易时间0 \  j/ D7 G* D# ~6 T
appraise-give8 \! p  j( m* T- u% V- o2 h
;;
当前发生交易时给出的评价
) H% a8 t: w0 v+ @1 a6 Vappraise-receive. t. r+ w/ V$ d5 d( P7 B7 v, Y
;;
当前发生交易时收到的评价
4 x1 @$ j3 K! [$ G8 C. uappraise-time
. I& r- p# Z7 R7 [3 l. B;;
当前发生交易时的评价时间0 l7 K( d2 a& t* X9 J+ ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" X  z# n( a% ?trade-times-total; J0 d  e% }% ^% X! u4 e9 E
;;
与当前turtle的交易总次数
# w4 M) J6 e: U- rtrade-money-total
: Q& V9 I' B# a; K" o  b9 d- H;;
与当前turtle的交易总金额3 @) v) ?. l+ e+ v' q& \% A
local-reputation) m5 K0 S/ B# v1 x0 I0 I
global-reputation
3 `* O8 {8 R  `( f4 ncredibility4 p/ d1 c4 `7 x: l' R5 T
;;
评价可信度,每次交易后都需要更新2 q& C0 }- Q* N# V
credibility-all
3 q' [; p. I3 I; j" S8 G;;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
. p, P1 K8 T( N; U8 N7 e* h. s* U( Z8 R. e. V# |' R0 N# V+ a- g
;;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
( Z4 R/ V# N# o! ~credibility-one; b# Y" e1 y- a' t' x  ?* u; M
;;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# H  H% \. r' O- ]) ]% h% P
global-proportion
, V3 q7 ]4 Z" Z% o9 J# E# A- bcustomer7 w' h2 l5 t1 i* [) M( @+ f
customer-no
6 Z  v5 \3 Y% ktrust-ok
- \: c3 K& I2 S' C5 Ttrade-record-one-len;;trade-record-one的长度
" c" f& W, I  t5 H! Z0 C% D7 w! b]. d& L5 G( A7 R% E3 t, c

: i9 ?8 j# d: u;;setup procedure8 C7 F' n+ K5 b( U+ b
6 ~: O( Z% V2 {7 A: X% E6 f
to setup/ ^# r/ P0 M! ^+ d! h9 ?
) K/ G1 f9 q; A' V8 R: t
ca
" `- r/ A% y) M

! n, I, ~$ m$ I/ q, i+ xinitialize-settings

* P$ n4 v1 C/ w
3 K8 W+ W5 O/ o8 h: N7 Rcrt people [setup-turtles]

- U& q& E7 T% |( X/ B% j' C: V; O6 f" W) N( f, ?
reset-timer
9 ?9 E! W# t9 e' ~4 K2 e6 E. l: }7 D

/ T. ^6 H3 }1 s. E  R9 ?poll-class

: m# R; _# K! R8 B: }1 ^9 O) d; |# K3 z; m5 C
setup-plots
% A6 V4 D  F8 F7 ~

+ ^8 h1 Z( U, Z: ]4 ~* ydo-plots
! i  \7 a* `8 _" w7 u
end
: E* B! Y. V' }% u* J' k4 P4 }: m+ r8 a, d
to initialize-settings/ V+ K1 z4 l* L: |  p, {) n$ g
5 G, i- d% m% Y5 i" B+ J
set global-reputation-list []

* E$ g, T# _0 l% g5 z
! W& a3 z% z- ?set credibility-list n-values people [0.5]
# l. K: g# u% B. h0 c
' T* Z  W3 r# a6 s1 C' y' q
set honest-service 0

2 i6 F0 I. E4 _& L& K3 l( D! E! b: m, @* e5 L+ J7 j/ G
set unhonest-service 0
* k  C" r& F2 |/ t
% _: S& k$ }/ W. ]) y! o
set oscillation 0
/ f% U3 T9 {' j7 E/ S
! @5 R4 Z4 v8 w- z9 C, y% a- Y
set rand-dynamic 0

. m/ m" l' |  f1 F+ Gend8 K) N$ F* [3 i4 I" B4 U' c8 }

- o8 z; Q- j- ^( ~9 n/ sto setup-turtles # y+ R3 b* @, k( f+ q7 s2 L
set shape "person"7 R( Z  r  V% l$ f
setxy random-xcor random-ycor
  C: ~$ P- Z7 e  p6 Yset trade-record-one []
8 X  G, E) u7 X( o
$ q5 L% @, L" Z" f( U
set trade-record-all n-values people [(list (? + 1) 0 0)] + ?' J# P. m/ o% T. ]" q6 b6 m
! V4 C6 E' F  K& [5 h. u
set trade-record-current []
0 ]4 T6 l7 k1 Tset credibility-receive []: E2 [8 H" G1 y7 E9 e% u" J5 ]+ c8 a% D
set local-reputation 0.5
9 i+ h& ?$ o; E( O+ Q- ]set neighbor-total 0' ^4 h, A7 t$ O: T$ k9 T: T
set trade-times-total 0' [8 P% G' v2 x4 R- y
set trade-money-total 0- e, w/ I. P$ ~1 V/ f" ^! o
set customer nobody
9 ?8 X" v/ f' J; ]* B4 Y* w" [  X/ @; cset credibility-all n-values people [creat-credibility]* P' ]& ?9 O2 \/ w. b) I
set credibility n-values people [-1]$ N5 U( X7 @: v* Z* o
get-color
7 r0 ]# N6 m. X
& X0 [8 s* N' P+ `0 Y
end
: O$ r% g- L# k3 }6 X1 ~+ {" a' R% x3 f
to-report creat-credibility9 e5 L$ C/ {" S1 v3 D, A
report n-values people [0.5]
, P: O* s" J% O7 G. Jend
8 i/ F9 k; H3 x( [; M3 W1 R0 k; @/ |
to setup-plots
- n5 D3 o' P. ~! I' Q
  W$ R  f  w, N! p7 D; m* Aset xmax 30
% Y( x" ]7 S5 P2 f& M
) ~. l5 R' z4 d. W1 m7 U$ g
set ymax 1.0

. |! p4 C* J! Q- n
  I5 C% Z$ l+ @6 [# \, wclear-all-plots

3 o% C2 {& G4 h+ l2 h$ D4 w" r( ^: Q' N
% u: s' v& `/ {6 [) ?setup-plot1
% Z+ H& j4 i1 c2 D7 T4 C! Z' E
$ F7 K8 f2 `& ~4 u+ j4 x
setup-plot2

) f# F, B* v3 H0 z$ |
6 T# @7 l* B3 B7 T" Fsetup-plot3

; C* [1 ?3 l9 C0 `end" V* S, W" D4 B3 P, ?/ x* q
- ]7 K+ _2 n  x7 R( C/ d
;;run time procedures+ T2 L! W9 f& }- B/ g
. |6 n% {+ j$ S
to go: }( l0 A7 y7 \$ x& B0 X+ z
2 v: t( U9 e0 l3 N: U
ask turtles [do-business]

7 V( h% ~9 W8 _1 N: B& }2 iend
( b, U, P8 @4 o5 v7 Z* e  ]4 \, @/ s) g8 |: w/ z) B; w3 d' |
to do-business 2 C1 w( H( S0 J; F9 Q# l
* w8 D3 Q% N$ [6 m

4 k( b5 V2 }& ^rt random 360
2 B8 K/ f! W$ s7 T+ q

: D) a* Z0 r% [: p- Zfd 1

' X! [% M' I9 c8 i$ t, J0 z  v, _! R( v% E7 x: I4 e6 w. O7 i) C) P  u& M
ifelse(other turtles-here != nobody)[
- ]$ V0 v# Q  c4 \2 _

; @  l9 y) q5 ?: X6 L- R/ ]! oset customer one-of other turtles-here
! o/ b/ n1 Q. T% A; l* @' `

+ o$ C. Y% w  m+ y;; set [customer] of customer myself

# L, Y1 ]$ P2 c5 e" L* u% |' H2 B! |& B8 G1 |7 w* |3 M
set [trade-record-one] of self item (([who] of customer) - 1)
" n8 U" p9 n# o[trade-record-all]of self/ U; A4 B& @, `" T' w3 v2 P' L8 O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& {& u2 I/ s: u5 A, \. y/ X; r2 A* m/ {" d% H" N8 p$ K
set [trade-record-one] of customer item (([who] of self) - 1)
6 q8 F9 S0 `9 W- z  r& E1 H3 b[trade-record-all]of customer
; V( U- K. K/ J/ F7 {

* c' W- a, t0 Yset [trade-record-one-len] of self length [trade-record-one] of self

% V: A. F* Q& A: F% d) @1 `- }+ ~4 H" f/ m3 `9 D
set trade-record-current( list (timer) (random money-upper-limit))
: c( ~% r9 k4 f' N/ U: G4 o
. p# P5 t7 q: d* x3 M$ ?% N
ask self [do-trust]
3 u: a5 n2 A1 U# A3 C5 E;;
先求ij的信任度: H# r! D! J5 K8 t8 S
* |, `) A3 B5 A) ^9 b% b' y& ?& H
if ([trust-ok] of self)# T4 J9 X2 D" f7 w) b! D+ J
;;
根据ij的信任度来决定是否与j进行交易[
1 c, v6 D2 U  p  [ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 `# D& m6 S; l- w: m4 l3 J
7 R$ V/ g  u  p[

0 h( N4 x8 D) _/ O; S: p5 z
. t8 C3 n& u  O: I( C; y- H. vdo-trade

% ^/ A, o( m' A) o
; z5 p; ^8 P6 e8 [0 W8 yupdate-credibility-ijl
8 M% G6 {4 F  b  g% a& _7 P
$ u( w* @, {( f
update-credibility-list  d6 i) s0 h) P2 R0 v1 H

# s2 O, Z1 `- U" M
* H" h% {4 [7 ^update-global-reputation-list

9 A1 p' u) I- ~$ ~5 L% ?
  ~9 U9 m. g" qpoll-class
6 x) h0 K% Y, @& ]2 ^  i+ P
9 _4 z" v2 \9 E4 r! y. z
get-color
4 O$ w1 L+ P7 h! B3 c4 U5 P4 H1 E
+ R! Q$ K7 L, x
]]
$ ?8 n7 n$ H+ \# X8 T& V$ A- V6 T: [! G
;;
如果所得的信任度满足条件,则进行交易+ C+ y6 R6 p" M: v

0 G: Y' q( W9 n& c[

7 X6 k$ u  S/ ?. q" `9 \8 S7 I8 K2 E' v# }4 F- ^  Z3 ?
rt random 360
8 q6 c7 G7 v4 h$ w: a5 ?; S

% K" a* ^3 v- y4 C1 f2 wfd 1

) J* x: n7 u% V: m  i7 A  W, C) _0 E
]
* R/ t/ s8 v4 M6 E5 e- H" C

  U* a0 b$ s0 {! u6 kend
$ K, f- T$ k& X4 H

, Q3 j  p" a( i, Q$ _to do-trust , ]3 A( @+ ^- {
set trust-ok False" M+ |9 c+ l+ q

* M8 x/ o" t2 U$ Y

; s0 w. Z8 E7 q1 V3 Plet max-trade-times 01 m" j& f( e9 m# j: t6 C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' R# _0 p  `" j% d# J+ zlet max-trade-money 0( K  N) g+ \1 j% ^5 D7 X! v3 D/ T
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 L# E' n# t  b! [) Z5 \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ ^* t. F* @, e

3 c% y. f: |$ ]/ D0 I; o

: u% l$ U/ q! e1 |% eget-global-proportion
" T+ V, M4 K- Z& F7 T# T* dlet trust-value
/ N. t4 t: v7 ]& ?$ O8 M& Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
0 r: |2 b5 ?5 q
if(trust-value > trade-trust-value)
/ s' F6 G: R8 V( T+ N[set trust-ok true]
+ ^4 x/ \/ d' X! R9 x; z6 gend
: Q+ Y  Q% w' s6 n0 e
$ G$ K) d4 e, a- uto get-global-proportion
: m* e* }9 v9 _0 C# U5 Zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ O0 |6 c5 u7 V; `2 U) `3 t
[set global-proportion 0]
1 F# S. m4 u# Z' m: D[let i 0
( B% u, R, C* Nlet sum-money 04 B" s5 M& o7 D1 [4 V# ]
while[ i < people]( f& J! {. b5 l  I" h
[3 h( K, s3 G5 E! Z) p
if( length (item i
/ d  g. E/ M" F[trade-record-all] of customer) > 3 )

, A' V$ h( H: S[. V6 L# X' }7 {9 Z: S/ `( ^, ~
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) |: U7 h9 a5 ]8 d2 h. m]( q; K1 R* d; E. B1 `
]
# s% y" O' W( F; I' q6 B6 j; f* clet j 0
% C) q+ ]0 i$ |6 }let note 0& x, P/ O9 S2 _5 n; I% A3 w  [
while[ j < people]
' _, v$ \- B, K: ~) f[
, x% k" t5 v8 A: t( {if( length (item i
( J( R+ P/ k# v[trade-record-all] of customer) > 3 )
/ \% Q2 e9 L( C" W: D
[% k: _8 A  \/ {) g$ Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
+ A) g  [" f, h  P- a% B[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], w+ l- F5 p  T5 a/ F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 w% G1 l- }6 ^& I
]9 a8 W2 v* t# Y$ Z
]$ j* C' U% J" l, _5 s9 S
set global-proportion note" K% b9 N! q, U" ?
]8 _2 T  c0 O4 @: }
end
) Z9 S7 z7 ~9 o9 J
7 Z/ z6 F+ \  ?to do-trade
5 o% w1 {( M* w/ D( S% }6 Y;;
这个过程实际上是给双方作出评价的过程
% @6 d7 S6 F$ \5 S2 c9 Kset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价6 Y2 G+ e) ^0 u" ^; |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. Y  G" R5 _& x! b: u' ?6 q8 ~5 h# b
set trade-record-current lput(timer) trade-record-current
# D5 z) k8 I2 [7 U, k;;
评价时间( |1 X' R. z! ?  K4 o
ask myself [1 j' _6 c0 C8 b) F: R
update-local-reputation2 E0 M, @8 ~! y: F
set trade-record-current lput([local-reputation] of myself) trade-record-current% U- q& \/ {. `3 q' O, D" K
]' l- a' V, o7 c/ S# f
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; G$ }  }. p' @
;;
将此次交易的记录加入到trade-record-one
1 Q2 T( a2 J7 z9 `3 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# r$ p. Y7 F* klet note (item 2 trade-record-current )
. L" P6 e1 R- ?8 P3 ]$ Bset trade-record-current
; z: ^3 f; j/ F0 U2 @; d  a(replace-item 2 trade-record-current (item 3 trade-record-current))
) `& K4 Q6 H# t
set trade-record-current- i$ K1 V' |: N; ]8 q% D3 _7 E
(replace-item 3 trade-record-current note)
, ^9 X/ V6 b2 ]& P! J- \8 r7 j+ r& j" n  R: L+ M. n) L: Y
  T5 s2 b/ g: T3 A- S- ^1 Y
ask customer [2 |2 ?8 g# R8 P
update-local-reputation$ n  p& N9 R: q  X- P: X5 t2 h, c
set trade-record-current
8 J* W+ t& l5 V(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' y4 q7 l# b- z]/ @1 T# v0 e) ]( X) ]) m0 U9 m, H  U
2 s( r! C) w) T. n
# k7 @0 ?, r$ C( S
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 g( p0 Q3 @7 M: g

0 y& A8 ^( k. [8 ^! C' B4 W" M! e( lset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" ^0 ]/ w8 A( b9 m
;;
将此次交易的记录加入到customertrade-record-all
6 j: Q$ c0 }, k8 lend1 w1 }7 x3 w2 S

4 r9 N3 C( [' h  X; p- |+ Mto update-local-reputation
. y/ y3 P8 J; r3 }  k: [4 }$ uset [trade-record-one-len] of myself length [trade-record-one] of myself
; h3 o. ?" s' k- F1 y3 f# f6 I, g
. s3 M; O9 u- r+ {% B+ s2 K8 b* v" n3 _4 D7 U. D4 O. v
;;if [trade-record-one-len] of myself > 3

" }9 u2 z9 j8 lupdate-neighbor-total, e. o3 q2 a; P( c/ y7 Y
;;
更新邻居节点的数目,在此进行
1 a" I6 V1 ]+ ~* C. M0 W; alet i 3# E$ b1 h; i* m. S$ l' t1 x7 t0 w7 M
let sum-time 03 S* ~/ V0 |: i$ W- g% r
while[i < [trade-record-one-len] of myself]- u) U8 K/ ]* p& H& J
[
, v6 s* y- t8 T; }. |: Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) y* c* K; p1 U2 f$ ?0 Vset i
+ X$ M7 C# W0 N8 }" P( i + 1)
! c' F# `' `9 D- \2 y! g! @
]
1 E+ N2 W. m- I: Wlet j 3
, {, R: g' R, Z9 }0 H$ P  t( W% rlet sum-money 0
, |9 v$ t8 Q( B, c4 rwhile[j < [trade-record-one-len] of myself]
8 q, I$ a& ~; i. g& [[& a6 n5 a' x: D4 n) o! v7 \
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); n# n9 z* r  D+ ^
set j
$ }% }6 D9 V/ I8 {& t# E0 F9 H( j + 1)
" {8 n: \% E3 Z6 S( L
]
1 b; |' g7 D9 K0 zlet k 3# L+ X2 }5 |. _- k3 R
let power 0' Q& v3 m- J+ a; I5 l
let local 0' Z( f3 ?4 k  C" Z  N2 I
while [k <[trade-record-one-len] of myself]. j/ p0 ?+ d' R3 J0 u
[! b# W' q( U6 V' {# ]# p5 G
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) - g# e4 k0 M5 g" B
set k (k + 1)9 a' o* K+ k$ ^/ r0 ?
]( y0 I& N9 X7 O0 Z1 b
set [local-reputation] of myself (local); A: y+ }! r0 L5 y* ~5 A- H* x
end% B- _1 s9 \1 I3 ^, \

8 Q9 s: v5 n5 a: [! \to update-neighbor-total
5 X2 J9 g. j$ ]- b. A$ [) g' x% e. O* {* d7 H2 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& I' S' V  b3 [6 c
, }6 R" Z; p: q6 S) D, e
3 V' Y1 P# n$ [+ p/ H% O/ F% ]6 T
end) y1 ?% Y8 M' Z1 f3 g
! j# y, I- a3 x4 [3 }
to update-credibility-ijl
7 f) s0 p& P  b
% D7 G' Q. n8 M7 z- y, g3 _, 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。
4 s  i  G" C7 ^& blet l 0: z$ F" z) p, T
while[ l < people ]
, ~" J# V) w5 p8 R& R$ f* r% v( q;;
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& e. K6 T, i1 D9 q
[
% p1 b- o1 u' I# d* a, [/ K5 c. Wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)# g) P5 P3 ~4 d' y1 Q
if (trade-record-one-j-l-len > 3)% K) g" m/ Y- Z' F: {3 p3 w
[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
* H# l+ J) D+ S# Qlet i 3& m! n8 z( X2 ]( a; C3 M4 p7 Z+ p
let sum-time 08 S! @# K6 u# J
while[i < trade-record-one-len]  e3 w- T) g, c% V9 n* I
[- Z) A% r% i/ X8 e( |4 a& ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! G8 U9 X. H, B0 P  ]$ Gset i7 I* ]0 v. U5 A, D" |
( i + 1)
& Y3 j6 F" \! j" I, v
]
/ o5 x. G' H+ p4 G- zlet credibility-i-j-l 0
7 R' O* g1 N; y' ~* p;;i
评价(jjl的评价)! e0 `! ~3 [: v
let j 3
, k/ Q  B6 f) q) h3 X8 P  Klet k 4
/ n0 T1 n6 ]3 o1 Dwhile[j < trade-record-one-len]
; h, i$ }5 q' n( f: ~[. V# K7 m, K+ R& T
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
2 S" C2 ?8 ^0 _* k( R4 l. L4 ~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)7 C$ ]6 x" A: u
set j
) O4 `4 e3 i3 b- O' d: V( j + 1)
! D# F$ d1 b  i/ K5 q
]
% a, H* S6 z) `% b0 f3 Fset [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 ))
5 s* j8 s# C+ P- n/ D9 N, C7 w( a% z1 _* d: r

. |9 L) p: p( _. l' [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
. }, _/ B2 E+ m; n; @# }# A;;
及时更新il的评价质量的评价; d: t% F  \. L6 o7 t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], o! V# Z: [; `& A/ o1 [- N0 R
set l (l + 1)
+ J3 s0 v; T& x+ `% J& {7 Q7 t]
6 ~4 X9 V6 \& {0 ?0 p5 dend' Q$ f2 b. d$ V6 ^" J
: ]8 Q: g( \; N, U, o# t6 v
to update-credibility-list# Q7 G( i# F4 H" Q- p& E
let i 0
$ H! c5 c. ~/ O3 T% S# Hwhile[i < people]0 v6 h# {$ u  ]' `* E
[$ V( N" e+ g& O& y" `
let j 0
. n( x" b7 W) q$ {2 olet note 0
3 e0 v. u! G; ?) z. a3 alet k 03 E  v5 |) [8 W: @: w0 q+ }
;;
计作出过评价的邻居节点的数目
1 u" a) G  I" J# L5 I7 S+ @while[j < people]
% q; e( g" g' X; ?2 I, I- _[
1 P" K$ b4 ?8 jif (item j( [credibility] of turtle (i + 1)) != -1)
% z. P( q. w" l2 f  W+ y! C' U;;
判断是否给本turtle的评价质量做出过评价的节点
0 [. ~$ h+ t, [2 V+ S[set note (note + item j ([credibility]of turtle (i + 1)))
. s2 u( E- `  P2 }# N- x: E9 @* L;;*(exp (-(people - 2)))/(people - 2))]

6 _4 d2 ^+ q9 d- S* q$ o9 ]set k (k + 1)
- k7 O0 H$ u8 o9 U9 m5 }4 e9 Q]
9 \1 L% Z; [* |" W; T7 n: Tset j (j + 1)
8 s( V# B. Y! I3 E]
# \2 i4 Z$ K9 J& B8 N! vset note (note *(exp (- (1 / k)))/ k)
* e! _- T: V+ I+ Y9 \  Jset credibility-list (replace-item i credibility-list note)
; s3 K% V( I& i9 t; S' {) k- o, k7 rset i (i + 1)
1 q. I( z3 {- p; I1 ]]) ^1 |2 _4 i5 Z. K5 o8 H3 g& Z
end
1 ?# T. T0 m- m8 P( b- A
4 [: h0 f2 r  Kto update-global-reputation-list
' A5 S: r* I  G0 M& Glet j 07 k, E0 m$ I+ W9 |- [' I
while[j < people]+ z2 o, v! C6 `( {" \! y; a
[' N0 [2 l2 g. y! f0 G/ z' `' S
let new 0- n/ _9 E, K1 ?& c  Z8 w& O
;;
暂存新的一个全局声誉
) C4 ^' c; u4 N( hlet i 0" j' n$ K5 Y8 ^; j
let sum-money 0
/ C% B. B, z: b! |5 W( vlet credibility-money 0
6 [2 Z3 b3 C8 C- a+ O- |while [i < people]% }/ [$ C0 R; ~) m' y+ s
[; u% f; x- P3 Y9 ~8 w& S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
+ z$ S, o- y! g. dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 G/ t* c/ h7 h. |set i (i + 1)
8 M( S# t: G' Y' k" u- ^]2 @0 {: K0 Y& F; y' W* ~9 Y5 W- O  U3 U
let k 01 K, w' z2 U+ N: x6 B$ {
let new1 04 O  j6 @  O% |# x
while [k < people]; o* f, Q2 i! O; ~" P, J* Q4 ?
[/ [6 x' y- b" h0 }4 E0 b" `
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)7 i. v( C* Z! |. X  x3 S5 m, q8 q; U
set k (k + 1)
2 B. x  X. v  i8 u5 F]% f& Q5 e1 ~& s0 A! a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & G) j9 c  G4 L1 R5 f
set global-reputation-list (replace-item j global-reputation-list new): y& _$ t: V7 j" f) z5 ^
set j (j + 1)
& @- ?+ z8 Q* g0 K]
4 m# g- Z) O: A: t8 @4 \( i3 Xend
" R) b+ ~6 ~. B. u5 ~7 }6 n8 @5 o3 g

# k8 l4 K7 M# G1 O" f
) I8 H* x. R6 `/ r# W6 ]to get-color  N# o- B" D: ?8 B' `2 [

+ s. E0 F" j( A% F' W- Kset color blue

+ a* G$ b/ Z$ w, ?3 T' Hend
7 j) z8 e, l& L$ ^( c- k
8 l+ @0 t, u- D7 q* a/ k/ ^to poll-class
* v, E" z* Y7 ?0 Iend) I+ y! A) n4 Y. ^
' [( Z# i. ]' Q
to setup-plot14 |3 O( H, a) |* x

- `3 _# e9 c+ i$ Pset-current-plot "Trends-of-Local-reputation"
+ i# J2 Q7 i# y6 n
" T+ J8 ~. B( g
set-plot-x-range 0 xmax

# U7 i7 T$ ]3 g% g% t' e) g5 D/ j
  I$ h. R* {$ U2 b# Q) U4 Rset-plot-y-range 0.0 ymax
* T, t0 T, y: w7 s* V
end
5 D  Z1 b' z7 K$ ~( t2 s9 q
' V0 E; A2 @( Jto setup-plot2# |" k5 e4 s9 U( ~0 K+ B- j
2 h. M- o; H+ A1 U4 @" e
set-current-plot "Trends-of-global-reputation"

0 L3 x" Y2 Y5 m7 @% X3 [  v. L
7 O* P: E! r! u" v2 Tset-plot-x-range 0 xmax
# K: k0 V2 v/ w6 j+ i/ [% V& o3 \
7 H* a6 ^( c  y1 M# c0 T0 N! V+ i. D
set-plot-y-range 0.0 ymax

& M: T! F/ |% E7 Send5 a/ w; a9 Q& @7 X3 }, u6 }" q* b: E

1 J, H1 O# G5 @6 m$ sto setup-plot38 @/ E% W; t9 c, X0 B! E" }
5 w0 u9 Z2 B5 J9 |
set-current-plot "Trends-of-credibility"

6 U" ]& N( d! O  q1 B! ^$ G
2 [: e% k9 A0 ?2 vset-plot-x-range 0 xmax
7 B4 Q7 s) z; R( W7 F, S3 S
; `9 }2 F; s, I# z8 Q& L! K
set-plot-y-range 0.0 ymax

" l2 \( H: T+ q  C8 n& B3 e( xend8 X* c" B% s  \/ `8 Z7 k) M/ l

, u! T( h- F4 U& Uto do-plots
7 x  `+ R. Q# Y7 U9 Xset-current-plot "Trends-of-Local-reputation"
" ]+ i( l7 V+ d6 Q) G0 Lset-current-plot-pen "Honest service"
# [1 O. u" n4 _5 z) Yend
9 l( R5 Y2 \. b9 |
$ y' J4 f; ~, o1 A[ 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.
2 d2 B  D5 _% B# b7 D. H  Y7 m% j; T
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, 2026-5-12 19:49 , Processed in 0.031570 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