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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:, ]1 H/ T9 n7 B
to do-business
: K3 {$ Y, P4 q. p) x9 G. ~ rt random 360% r2 `, }* C' o
fd 11 k9 n' {0 U/ I$ I
ifelse(other turtles-here != nobody)[8 o7 Y: l0 P$ Q! r% U8 `$ y
   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 B, g* f2 j) I! L+ R$ z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . b; ?( I: f' r* J* I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ L! A" ?- J' w5 `. v
   set [trade-record-one-len] of self length [trade-record-one] of self, K, i2 o0 C. r( ^
   set trade-record-current( list (timer) (random money-upper-limit))/ B3 [& n  E1 t. l6 n9 c
" W' S; d1 w0 B0 X5 S$ M8 z0 w, W
问题的提示如下:
& d! u! @8 F1 X+ i6 T* x% d
2 ?. S1 n  `/ q6 Z, O+ {9 Zerror while turtle 50 running OF in procedure DO-BUSINESS( v* a* L! u' K/ b1 ^
  called by procedure GO5 U; B$ A% z& X# a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.5 R, [# c1 n  I2 d5 \. c
(halted running of go)
' l' x. I* \: k- r
" O/ N# M  _: I2 Q2 ?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~~
7 r  h" z% A% ^/ F3 i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: [; I) k9 u5 D0 y. ?% O/ G
globals[$ E) b3 e/ D$ J, t2 w
xmax
9 m$ p1 I. j/ c! c0 |ymax
8 L7 U$ _) [- Z( _* Fglobal-reputation-list0 b& I7 e7 b; h( g+ J( e1 U( j1 R
( O5 Y; ^. Q7 x( M: f2 X
;;
每一个turtle的全局声誉都存在此LIST
- |6 b# i! O) ?2 x1 |1 E4 X# x* [credibility-list
$ p) A2 T) @. @- r9 b6 F& x;;
每一个turtle的评价可信度" t0 {' p9 l5 w. p/ G4 d8 U
honest-service+ W  @2 l" x/ }$ y! t: Q
unhonest-service
- D! \+ g: Z  [1 [oscillation0 U7 [) l9 g8 p7 e
rand-dynamic
& \8 ~, E4 z# ^6 ]; V4 |" L]
* B1 L4 ^. O  Y) b. x& f! b2 Q+ P' c. L) ^
turtles-own[
7 n2 g- y  f/ c+ a: v( ctrade-record-all
& {+ Q" I% j7 _7 S8 q; ]7 B  H6 k;;a list of lists,
trade-record-one组成) k" q- b: g* b, t; l& e% t1 r
trade-record-one
. W1 _# I2 }6 ~% P6 i2 r* 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
/ i5 w  e1 y2 j$ }' V+ ~6 G2 b9 K! n& P- V* H( n: v7 ]( Y
;;[
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]]
, v, }+ |% k5 g9 etrade-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]! \, x: J4 n. ^' X  d
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list0 Z% t8 C  ]& g2 v
neighbor-total
8 [% y0 \+ J5 _;;
记录该turtle的邻居节点的数目
6 a* ~0 f6 h9 g  V9 ~# |/ Ytrade-time
; D9 F/ n/ F" v3 O% j' [;;
当前发生交易的turtle的交易时间
& c) Y. e+ Q. m0 u2 V" a  e; dappraise-give
, [+ g. f' s  P+ u* x" ?3 d;;
当前发生交易时给出的评价
$ |% ^5 ]8 ^$ P+ Y& \  Bappraise-receive
4 }) n0 ~# T. T;;
当前发生交易时收到的评价7 L0 G& ^) }" {8 d3 _" B" M, H
appraise-time3 l' }9 ^: F5 A. j5 v
;;
当前发生交易时的评价时间
8 S1 V9 y. r* Y2 E! t/ |  b  Jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉6 ?% e! b9 P2 l& G8 `) `) \
trade-times-total! g' C0 Z8 T# M& Q5 V
;;
与当前turtle的交易总次数2 U. n4 M3 w5 z" n0 e( o
trade-money-total( x4 g1 M! V; H9 ^$ j
;;
与当前turtle的交易总金额, @; |( X+ i* x
local-reputation1 ?' V* }1 @4 |
global-reputation
) H( e2 C9 r2 o% S; Rcredibility
+ Y4 b8 w5 C6 N3 [  v/ ];;
评价可信度,每次交易后都需要更新
+ F) E" C" U* l; ?; Pcredibility-all
) |/ P; o5 W! Y* q% u$ y5 J4 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
# {! T4 {1 M$ F' q+ y& ?0 ]5 e  j  u7 w. X, D8 @
;;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0.56 K+ _' A* B; i0 y4 L/ P
credibility-one
! m- H4 k+ X4 A- K  j! Q;;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
+ [# a9 \+ A6 o4 O$ f* vglobal-proportion( B8 u0 \+ i8 E  g9 [0 @, `% m4 ]. U
customer
2 z/ ?) K. g0 v' v4 |3 u/ W4 a0 `8 dcustomer-no
& D, v% p- G* r2 _, v3 X% atrust-ok
2 J+ R) g! T4 S0 x) d& G; Ctrade-record-one-len;;trade-record-one的长度
2 K# B7 t( K0 F: Y# \% Y]
. f% O. {+ G% K9 }1 Z' k( q; N) Q+ D, j% _0 t5 ?
;;setup procedure- h) }% R( x3 B% D' E; {
: S# }2 ]2 X0 n$ P  n& P- |! f
to setup8 j, {% M8 l& B) U$ B
5 ?3 x( Q, f. ^) d; d: u0 z# C
ca
" N, F" `/ _0 h; T
  K! Q9 C* |  p# h
initialize-settings

- S: m$ W$ z0 [; ?
( @9 Q7 \7 m8 @- n# Lcrt people [setup-turtles]

  c; O$ u/ ~" U! U4 z
4 r4 ^& W" Y0 [4 I/ {; freset-timer

6 S6 ?- N+ M0 d9 {0 u
. j1 j3 x  ]' B: U$ P2 [' y- Z# Cpoll-class

' m# }+ X# p, J# c0 S  j, A# i/ ~; p& e0 Q+ K3 A
setup-plots

* L7 N, J3 C# G! Q+ D/ s$ D" U$ e  E' y1 |" v. x) i; R
do-plots
& b7 f3 q: }; i2 {4 I
end  w  ^7 q  q% b8 c

7 C: P1 q) ?8 F! [% `# ato initialize-settings
4 M# E/ f8 x$ @) V/ Z; K/ l' k4 L' M) a
set global-reputation-list []
& o  d3 F- O0 m/ h6 p4 `
# T: m3 u" y9 y; o" J4 Y8 _% U
set credibility-list n-values people [0.5]
7 ?) o' V: h! G

  V7 c! r3 N# q, P6 }9 A. hset honest-service 0
3 v7 \7 M+ }- b0 m/ @, v' u% o

7 r, M, R3 _) w& v( l1 @2 U( dset unhonest-service 0

: R! w. k6 L5 z& \( S2 F/ {# B% j: {6 ^# [) J: ~
set oscillation 0

6 H5 e" G: C. ^  g. q% I% X7 t7 U8 @. E
set rand-dynamic 0
7 G" C- d, I& ^+ Y$ e
end
3 p/ B$ E6 ]  T% A& X' s. @
% g" `6 P2 E7 ^' U0 p9 u) d. xto setup-turtles ! R& t. p% C" v
set shape "person"
' ~# b0 @) ?1 q5 Vsetxy random-xcor random-ycor" i4 I% H+ M" J. @) Q( w
set trade-record-one []
3 b1 t! H& ]" q* r
& Q  r4 P' c9 e- }
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 M  j$ t! x8 Q+ J0 S
0 C! _+ E& b/ g( s+ H& }$ g
set trade-record-current []
- `$ [8 R# L5 p' \: j+ A5 Qset credibility-receive []
+ M9 A5 q( Y( I) yset local-reputation 0.58 j$ d! x9 l- x; v, x6 j5 s# k6 f( a
set neighbor-total 08 }# _+ Y3 s! J: x
set trade-times-total 0, e; A) G- p0 p
set trade-money-total 09 J3 F/ R3 Z# M
set customer nobody. i) N# g' w3 c  @& o: n
set credibility-all n-values people [creat-credibility]
8 ^+ x$ K! L0 L' W, Oset credibility n-values people [-1]. ]3 q$ D3 c4 |# N6 H4 N
get-color
2 I! Q3 ?* e& n) t; x4 j( |3 Z
! J2 F/ o8 b) i/ Y* z
end- x3 q5 z7 k! n' F6 D+ l

$ ~% z1 `  ]; `$ p! e: g' Lto-report creat-credibility
8 W8 M" }6 V% \, @0 m0 p4 [( h! Ureport n-values people [0.5]% O2 k  v0 }# X+ z8 I0 b9 T
end
: k; y4 Z0 m! U9 A% J
; Y" k# I" [3 S1 hto setup-plots& j" W% t& T* Q/ o) {

  l  x7 \1 p& Cset xmax 30
6 M8 A7 w0 |( L" J0 S

6 C) l6 {9 a8 H, [* I: w1 O# Kset ymax 1.0
' {2 z$ h& v( M

% n1 D5 u( g" s2 ?' Kclear-all-plots
" O0 ?  [1 D  u: @) H( c9 G  c
1 Y$ A3 ?; E3 _; h6 a
setup-plot1
- t) V1 E, {2 L6 ~
7 @2 n6 Q- ^  U
setup-plot2
* f( F% b: J2 Z
! x+ `  n# q& ?/ r& R3 }
setup-plot3
2 `3 G( X! f, V$ Q, b. m1 p. ~
end& H& w7 h2 m# Q3 \. r% a  Q# z

6 _5 K7 f: |& o) ?% {+ Y9 p8 A  q;;run time procedures, J8 m! x) j! T. R* G

, l: E% q* l4 e5 O2 W2 Fto go9 t* j4 O' T1 S6 w; |: x

- s1 R( p3 O+ y6 {/ Uask turtles [do-business]

( N1 x  a* J% Y# [end% p- X% g9 n6 O( t
, L$ T0 R3 S8 w' ~. Q, m
to do-business
' O* X5 e; @  `; ^* W4 r
' z: }8 k9 y* U

4 G$ h6 x- b7 v$ V0 h9 Frt random 360
9 O: d6 j  v6 H# B3 [

) U% f2 K. l' O* J6 A0 N( jfd 1

- L/ G1 n' ~5 b( U# ~; `' \
7 |- z  N, W( N( P' ~; zifelse(other turtles-here != nobody)[

2 C1 K, W. S: B& ^, i1 ?9 I
) I6 Z! v9 B3 i5 I3 K& I6 |/ tset customer one-of other turtles-here

% c) f9 P# `) Q) l! J
& t& G7 [" i2 W8 Q4 [- n;; set [customer] of customer myself
" d" A& s1 y5 D; ~6 v+ X4 X( b
% W$ k+ u6 L6 E+ x- a' n- S  z
set [trade-record-one] of self item (([who] of customer) - 1)( l1 d; T+ u7 w2 X9 W* }% P% p
[trade-record-all]of self
. }/ ]: Y0 p# V; a& C; J+ v/ ?( e% t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

( {  B1 b& J) C3 Q- r& [+ o3 k
5 p8 s& [  \5 A3 ^6 uset [trade-record-one] of customer item (([who] of self) - 1)' q" m! Q# Q" S+ r1 s( X+ ?7 i
[trade-record-all]of customer
0 B$ T) y  f# |4 m

# H7 }) E3 o$ pset [trade-record-one-len] of self length [trade-record-one] of self
' r" K& w+ C3 H  \- i( G

: a$ D7 ?& O) K& a8 Bset trade-record-current( list (timer) (random money-upper-limit))
' |& S2 T2 O7 Y. n4 Z
& Q7 T. j5 T  m: w  I  H
ask self [do-trust]
' `% i. U* `( Z;;
先求ij的信任度7 X7 h- k; H# Y

; I" a. V' Q6 L% Iif ([trust-ok] of self)
$ i: x# i" P7 J  X% J9 |4 y;;
根据ij的信任度来决定是否与j进行交易[
( t& N8 S& M* D% W! i! b' Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 j4 G& X. w" d, {) R* f

1 }" e3 {; m6 M7 K+ B[
9 J4 |/ u, L0 z& m0 k4 @; U- ~
; c9 m9 l( l* L; T& G
do-trade
# ]7 }8 r: B/ X' w. b

" B3 P) V/ L1 N- K* T7 Bupdate-credibility-ijl

2 G7 Z! a% B6 f0 M% B
; ?% c! X* w! W0 _( Y, e% f7 Gupdate-credibility-list. [) z; E: I1 M4 L
, s. n$ J  m8 y

! R0 j% Y3 M1 \1 uupdate-global-reputation-list

7 @' F: r9 A% ]' |  P7 ?! G3 X% q, e# H% w3 n, `
poll-class
$ O9 h" V* w; f. y

7 b% a6 W2 T. l( N2 ~: N; |/ s' g  k) ]get-color

9 S2 {# {% F  A3 b# y
- ~* G2 ^, b9 N8 B]]+ `+ F% y+ B- u
4 d5 ~1 ^. R) ]% G
;;
如果所得的信任度满足条件,则进行交易
/ c$ y# y- I0 E6 `0 S
; I5 b' I) m0 S8 f[

& w  w# X" V. T9 P" ^( K3 I* r2 }8 t5 @
rt random 360

, E3 f6 s6 J" b1 k1 j9 r! u3 E. Q/ K2 d
fd 1
! e: e3 J1 U4 Y) N8 P
' g/ k" u& n/ y# r) h$ s0 k3 l# \
]
. s, D4 }- [8 N1 D% a' T( v: H

+ T: J# t" l* Z! qend
5 M/ W, }8 r6 ^1 J+ h& J
" E3 S0 L* }- y0 ], I
to do-trust
/ p$ g0 N$ T" B7 ?3 ~" e- [8 xset trust-ok False& e) V2 a; x/ {& c; J, ?
: x7 c$ p8 w$ q$ b) U! h

) H" f- p; ]7 ]4 tlet max-trade-times 01 s2 v, f. [! G$ K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  Y6 J3 {5 ]1 T$ g0 G, qlet max-trade-money 06 C7 }9 t3 g# Z) ~& [, ?8 B/ u
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], w. i3 V) A- L( b6 w0 u' J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 ^, p" B' l" |7 X
! K# u  `0 S9 ]" d* E
$ [9 c7 }! U. v7 K8 M' w: ?
get-global-proportion
6 [% m5 g+ w5 Z1 D0 I  c- d& j* glet trust-value  Y1 S( X8 ^1 w3 v( n
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)

' A. }, [& \5 j* Eif(trust-value > trade-trust-value)! N, b0 Y/ J. F3 x0 I: N
[set trust-ok true]& [' v# T2 E8 a. {+ @! v
end. Z1 L9 o4 D  }" ?( }1 j2 {

/ B' L2 m" X( \8 A9 e' Dto get-global-proportion: N" ?) B4 o' g# D- X! V. P
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ @* X- @3 ~+ {- Q1 g# R  |[set global-proportion 0]
& X5 ?; @4 z  c[let i 09 t4 S/ \6 C7 M; C
let sum-money 0
) j; H9 K/ L$ g" ?while[ i < people]
8 a; g1 u5 D$ K! S" _5 s: f[
, h# T' Y+ j  h- E) ]/ S/ uif( length (item i
( U+ T( X/ D2 }( P[trade-record-all] of customer) > 3 )

' |/ ?/ ?5 C1 a& c. E( l; a0 y( b[
" l' v" J! e7 G$ U+ U  V' oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 K7 K$ ^& m1 a9 |$ H/ K
]! l1 I% M, y% @) S
]+ ~  K& X, j) _% Z
let j 0+ P8 c8 r- L0 j( T7 W) d% i
let note 0
  ~! I5 V& f1 [. Swhile[ j < people]- c; @" `- }$ d; k* o( E7 e
[
1 N. ^3 Y; \, r6 Cif( length (item i
2 U. c% t/ M8 t' E: u( r[trade-record-all] of customer) > 3 )
4 [  I/ j7 ]+ o. ^& q
[
9 x6 E9 J4 _+ g0 Oifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
' Z  B6 x& ~# b- G9 ^5 s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  U& h+ T/ G$ J5 E5 K8 x0 y% ?  W[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 f. R' E4 k2 y' C# H9 T]7 K( t' u, C) w! Z) \0 S% Z
]
* J# l. o( K2 q* Mset global-proportion note
4 e9 c8 `# r4 m8 y9 {( l]
% g# r# f5 G  A! g' l6 e  H$ o9 w; Jend
5 {; M+ N# j3 T( b
# d9 x; l$ f! H  Hto do-trade. Q4 o9 A6 L$ e
;;
这个过程实际上是给双方作出评价的过程
  X- k/ ]/ R2 p" _& y! Q. Mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 i& H' p$ t* ]. g) dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" A$ D) U, B& Y- W
set trade-record-current lput(timer) trade-record-current: H8 _& R- D) m4 n
;;
评价时间
9 w4 v5 X1 W9 f: Y( r/ ~0 p# Nask myself [
# |8 Z, @4 g: j) _update-local-reputation
" S7 t0 m1 D. F0 g) P$ A, O% gset trade-record-current lput([local-reputation] of myself) trade-record-current& m6 m) \7 s' O6 [$ {5 U
]
( p+ {+ l( J: Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, G" p) }2 E8 L! ~: h* H;;
将此次交易的记录加入到trade-record-one
* f& c! R- M- G2 N+ x" [set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& W7 _& O  b' l
let note (item 2 trade-record-current )
+ c& J9 a) L# K: v% W  Kset trade-record-current
1 R2 e1 M7 c$ J! c(replace-item 2 trade-record-current (item 3 trade-record-current))

2 d3 t1 R' y/ D! u0 P4 V/ lset trade-record-current
1 ~9 m2 i+ K/ r7 ^6 z1 r  H(replace-item 3 trade-record-current note)0 x6 a/ D; V0 P1 B5 N7 h
' O( Z5 F2 C7 H) G, K* O

8 z# U* p$ `6 V$ e' D# yask customer [4 E( I- l# S6 j4 A/ H
update-local-reputation$ C: _  S6 ?  H  Q
set trade-record-current
- D1 H- ~) ^& n* b0 h(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 q3 L  R' S1 S, K1 _
]1 H; G5 A* I+ p! t$ G7 @
, T0 K8 {- t& X- i) o

6 X0 Z- o) K" s- c& n! _: [) Sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 a2 H4 N1 y" j* v5 @
- U% S3 G+ k+ N: r& g# w0 x" z% l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 F( K$ F' I( X4 e' ~
;;
将此次交易的记录加入到customertrade-record-all; c; B1 G' I# X5 \5 T
end
% }( J1 W1 M2 l1 R3 a9 E& m4 |6 j8 M5 N( d
to update-local-reputation( x% f; m- {1 y2 n( G! f
set [trade-record-one-len] of myself length [trade-record-one] of myself$ H* i, K6 j: w. ^. U
2 O% w& ^$ N+ e, \' m% E( `
" r4 t, L2 [0 R. R1 s' W
;;if [trade-record-one-len] of myself > 3

' x% f! U1 n# M% ~* Uupdate-neighbor-total+ k, a1 X" R" n" t" Q# l
;;
更新邻居节点的数目,在此进行, i/ c7 F" C2 K) ^- r/ F
let i 3
- C( }9 i% {1 q, F7 @" slet sum-time 0( t  L+ [: w+ _, N
while[i < [trade-record-one-len] of myself]' G6 O- r1 n( d) s# ~
[: `4 z8 G9 H. D* c7 x" U* S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ F6 ~6 E' R3 d' @, y" S
set i5 V) h0 @% @: D# [# X% X. s2 v
( i + 1)

. Z. H  |$ k0 F% _5 n]& B' v. n8 c, q
let j 3! {6 G# x) I9 X, E5 w1 \
let sum-money 0
; ]4 _) c2 v# L3 pwhile[j < [trade-record-one-len] of myself]
# Y3 B, n) {, U, V[
6 {, w1 n% l" J) Q- D8 Fset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
2 t  X/ b/ @% Q7 ~2 d; Hset j) C  i$ I' H1 \, N1 @, ^; i7 a
( j + 1)

4 J, I# V8 F* @3 `]: r3 Q$ i9 x) K& y' s
let k 32 j# q# `3 Y& d" X
let power 0
' Q- }8 w: |7 ]. a( glet local 0+ `9 I1 h5 M. d2 z! U
while [k <[trade-record-one-len] of myself]" `4 t  |9 d# o# a1 D
[0 y  F5 g" O! C) d
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)
% [, l, h0 \5 p! u6 Wset k (k + 1), X9 A3 l$ ^0 ^2 d7 @8 Q
]3 R' i6 a2 u! {9 s0 n, L
set [local-reputation] of myself (local)% j  \- r, s2 A! k% `# T6 L% ?
end
- K* k$ z2 J) |6 A3 _$ b& t
: j; L. S6 e3 M: X4 |1 B& i/ qto update-neighbor-total
: N/ K% F2 q9 ^" X! l
* i' y" E1 J' r5 H1 p3 oif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
- P7 e+ ]4 o. ?% [4 b* O3 Y+ J5 U7 d' ]
" `; ^8 Z! z" \1 v
end9 J5 A2 o" ?/ l  i9 ^' e$ ?
: t. I4 g0 V7 Y( E, |  ^+ s9 T
to update-credibility-ijl 2 L0 X( _9 t- Z) r8 v. I$ T

. b$ g2 Q- E! ?; x' G( f6 Y;;
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。
( H$ v7 W% Y3 @, @7 Ulet l 0
6 @6 T1 Z. U* x- j, {while[ l < people ]
3 ^* d+ d! ^( j" N9 b6 T% @0 ?;;
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
, L  q8 G2 l0 t" W/ u[! C6 E4 M4 I& c0 o; u
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ ]. C% Z* A0 t+ F- \if (trade-record-one-j-l-len > 3)
) \3 j" O5 D& `& G* L, a" C- l0 ~[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-one8 T* i3 k+ u6 L& i+ P; w9 \4 P$ j
let i 3
" T% [$ p" ?3 B7 Plet sum-time 0- r; w% c) G' s& W3 t1 g
while[i < trade-record-one-len]
2 o+ F: T- y, @4 T; ][
- L5 V3 _; S' H- q  I4 kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 s6 k) Q6 \& _
set i
. e$ m( h" i: _* B4 _* z( i + 1)
, h; z* E7 Z% P% Q
]
* |9 P, y+ V4 K  E$ N( S- hlet credibility-i-j-l 08 @+ i4 _& Q1 f8 V; B4 v  X9 ^
;;i
评价(jjl的评价)* {: H/ N: e' d3 T) y* Y& P, w4 b1 ~
let j 3
& y3 n) w! Y* u# f" D; }* }& n, alet k 4
7 f* Q8 n9 O; {, Z. f, gwhile[j < trade-record-one-len]
) v% P# v2 L$ M1 y* u# z& _* j( q8 N[& Y7 D( E* |) M# C3 R% i2 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
# S2 E8 s+ |; Q2 x& }/ ?' {) l% y8 hset 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)
$ ]4 @. t5 d* }0 N$ Hset j  \1 u. D7 q) ^1 N0 j1 }% S, t2 @
( j + 1)
" j  f1 R# F% y% D1 Q, N+ x
]0 k$ o' H; k% C, W  Y
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 ))
8 l) m# w$ i9 `
9 ]" x, Q6 Y5 S* C5 U7 v* k
( u: r7 O6 {) f& F  {  t3 p) O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: X; f, w/ P# m" Y) f) P6 u;;
及时更新il的评价质量的评价
9 g- W" U7 _" Z7 xset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, m/ [' j: @" dset l (l + 1)/ I* p4 Z/ ^5 X4 W
]
* c5 Q. Q  ?0 f8 w, T: X8 y# @end- l% b* t, z0 L& p. X
* D% W/ E/ @$ t0 _4 H# N+ d! |
to update-credibility-list- @- X, f! J5 q0 {8 o
let i 0
9 \6 I, V# F6 M) s) B9 y0 A$ Ewhile[i < people]
( d( X- J! i" o  P- J; U[+ i/ c' d0 W7 f! s+ j: ?
let j 0
  p/ O; g8 i5 {1 s9 qlet note 0# |/ C$ h! D9 a& R" |
let k 0
4 v  }% G1 U. ?% ?;;
计作出过评价的邻居节点的数目
( ^6 M5 ]9 |0 X; u- v. [% Xwhile[j < people]# \- e( x! L9 B) N" N5 K
[/ i" ~6 Y. R1 R" M. y; U+ ~" E
if (item j( [credibility] of turtle (i + 1)) != -1)
5 ~# Q3 B7 U# v* ]5 I9 ^;;
判断是否给本turtle的评价质量做出过评价的节点9 w; e1 g7 j  c8 g5 U8 U: `3 m/ z+ t" ]
[set note (note + item j ([credibility]of turtle (i + 1)))
# K- ]0 A5 e/ U/ G% y+ C: I% h;;*(exp (-(people - 2)))/(people - 2))]
& U) A. t/ J6 m1 }9 Y. n. m! r
set k (k + 1)1 e* m/ L3 K& _# P! I
]
& s; C# N2 [. O' Zset j (j + 1)
9 j: a% A* Q2 U7 O- N( o]2 ^& ]. d( L: P# e' A
set note (note *(exp (- (1 / k)))/ k)3 p/ Z: [" l; |, s6 L. n
set credibility-list (replace-item i credibility-list note)
2 ], c$ O; @+ W9 k& Dset i (i + 1)8 h) f4 T, L! _( |2 ]3 Z
]) ?! \1 X, z7 w
end
! f) V# m. v: P4 y: L0 }4 {- x' w+ F) _# Q+ u% d
to update-global-reputation-list% b4 U* J8 A/ s  W
let j 04 s8 [- t8 O- Q4 v, n' i
while[j < people], j, S+ a) ^; Q. |% Z7 {' R
[
' Y1 Y6 N# [. S1 Y3 G. j& wlet new 0
* H2 T, X; K' M/ @+ V6 [;;
暂存新的一个全局声誉
0 F+ K: T, L8 j  j; W+ `" j/ ~/ ^  |let i 0# u* ]/ g" B/ r' b5 d% V$ [
let sum-money 0$ h% [3 ]% d2 m  }  o7 C6 N9 o
let credibility-money 04 i  h1 y$ e! `, F
while [i < people]7 y. \2 |7 L  U2 W. n3 y! W( n
[
; ~; c. P4 f. `( \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 `6 B2 w* G8 I* k3 J. A2 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 u: D! {, l! d4 Z! F. {0 ^
set i (i + 1): n! H7 v" P3 K3 M' O( A
]/ O& n& w' ~: d9 z9 O/ l
let k 0
: b/ U% C* P3 H2 ?0 M7 llet new1 0
0 B8 ^5 g! o" h! gwhile [k < people]) a5 h$ `! U, Q8 V! q+ h
[
* l0 n/ e" r. H8 [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)
( j9 `& q- ]1 A# }/ `! Fset k (k + 1), R9 A" F3 v0 q. T+ f0 o
]6 C3 k1 P5 b, i2 O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ N3 P0 D$ P. u) ^7 iset global-reputation-list (replace-item j global-reputation-list new)8 F; t4 H' l% b6 Z
set j (j + 1)
, s1 V2 Q: |# a; r8 {]! c& R4 F' u- q& t1 c0 n! T
end
3 O: s) \8 P/ x
' n  G$ \2 J; s2 p3 J, Y2 E6 h
5 B4 m9 [& ]6 }( I. i* L! R! b
to get-color
: k. P8 J( d, D  N: ^+ m- }  a6 w2 j7 C& }% M& G; q, Q# {
set color blue
8 v4 _" J6 q& j! b  |% k, A
end
; I: `2 v& }$ j' Z) T9 d# O0 i+ q1 i4 }$ H+ M% E1 ^! ?* U' O
to poll-class' u! l% F" g  ~; f) e  b$ X8 G/ k& v
end
3 W" B, n+ R, b- f8 \- F  u4 F, ?3 {7 Q+ d+ }
to setup-plot10 ?8 {3 ^9 Z8 K4 T: s  E' H2 Q
; U! X# B. e3 u6 W. @
set-current-plot "Trends-of-Local-reputation"

& u* ~8 T7 v6 R1 C( f  y0 _+ v( |
set-plot-x-range 0 xmax
, C6 E9 c: K4 u" O" f
5 \! q+ A3 U3 \% {: A
set-plot-y-range 0.0 ymax

# N  B: W2 V* bend
. |6 c; H0 s6 H
9 j$ K8 ?8 `8 ^* \to setup-plot2+ ~- K1 \3 R; E* X

1 v  K8 q2 E0 R/ `6 K+ Cset-current-plot "Trends-of-global-reputation"

) B3 a) U; b' B$ J& l" q- Y! A
' w- X4 z( }& n) K& S. Q  V. I/ a, oset-plot-x-range 0 xmax

: J5 y) q4 i! h/ ~0 L" L& @' \' c
  ~7 L' ~, n( Y7 N0 U9 Y7 ^set-plot-y-range 0.0 ymax

; {% y) T' d& jend4 M4 I2 R/ s# g; }
, V# g. A0 e0 h# B
to setup-plot3+ Y% A  T1 ?  H+ q" s
* Q5 E- J. ^: X' V
set-current-plot "Trends-of-credibility"

4 K$ B- e1 z/ e2 t+ b4 R# w- y% c. Q5 t
set-plot-x-range 0 xmax
% z( Q) M( |: L( c' }- i2 u4 y
5 ?  C5 _2 c1 l# u! _, w3 Z
set-plot-y-range 0.0 ymax
( B2 c' Z2 l. V$ ~8 ?
end
! N9 X9 g7 z0 E  V* i+ a9 x
- l& o2 }' ^* j4 V" R( M2 O2 a  N1 Nto do-plots7 o8 a% H" L$ v$ `( Q
set-current-plot "Trends-of-Local-reputation"4 ^3 q, V4 t' Y2 r: k4 `
set-current-plot-pen "Honest service"- F9 i) g0 c; G) y0 k
end
+ b) z! a) e1 l3 E! X* o
0 z/ c' b: d, Z0 B% C[ 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.
3 j6 R6 N! V) I- f/ E  h( w% a# c/ e4 y4 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?
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