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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:2 r& {- j& v- }
to do-business
3 x7 p* ]: m, d1 Y rt random 3601 `* B4 v4 V1 o5 y# b  ]
fd 1% E6 E7 L7 f% T9 w+ e" T9 b! f- ]
ifelse(other turtles-here != nobody)[
7 r. k9 i  @2 W! I7 n4 t$ G   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.
/ z, c6 c3 U$ w5 g   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ E' \9 F  H. g: }   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 Y8 V, C, Q) H% U" t! Q9 O   set [trade-record-one-len] of self length [trade-record-one] of self
! v7 D/ v/ T8 W3 ^- v( ?- h   set trade-record-current( list (timer) (random money-upper-limit))
* O$ M% J4 B% X1 n; G$ v9 \5 R5 d' |; O+ i, M
问题的提示如下:5 x5 i* i, B. i5 v1 Q6 O

+ u: h4 o! Z6 A4 V0 ]. f8 serror while turtle 50 running OF in procedure DO-BUSINESS
, [+ }1 ~* ^1 Q' ^8 C; X% y2 A# ~  called by procedure GO4 Z! ]8 [. e. ?5 f2 K2 ]: L" k
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  j# ~) d: T& r4 n/ m1 {
(halted running of go)
, Y8 u6 H* X6 t$ T; O$ z2 {$ p8 a* z6 F" J" _( E  G
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~* l* m+ l0 z' t) E5 x
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
! f7 \8 q+ s+ I- V( k) Rglobals[
. P! a* e% Q; s/ h" A1 X, t6 uxmax% c# m& b8 F; A, O' u/ E
ymax0 c+ l" X/ y" v& w8 d4 t
global-reputation-list
# P: D; \2 |- k& b' A- {8 i
4 i) K$ Z/ i" G( o  G9 O6 X$ ?* @8 E;;
每一个turtle的全局声誉都存在此LIST: D  [6 c% V, B+ a
credibility-list
, W  U8 s: ~5 l1 I;;
每一个turtle的评价可信度: F+ X$ \- Y; f6 a
honest-service
- o) i3 ~1 @" gunhonest-service
& j* R( Y4 c9 d0 b) C5 }oscillation: i+ \8 N/ ^$ _8 r1 @: S& W" k
rand-dynamic
% i3 p+ U8 a! k, L]7 B# r( q% B" Z  f. e6 t6 [

" K* _4 M* T# z; d- F8 yturtles-own[
5 p! }3 {; n- }/ d9 Qtrade-record-all
6 `  t3 u6 e3 |; O;;a list of lists,
trade-record-one组成0 A% Q* f1 M2 n* i4 M- C; F2 U
trade-record-one
, \8 z' _9 y$ b% K) x+ \;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录$ b2 i( |/ I9 r, X1 m8 S# `

9 M. O" p: v4 D  q+ b2 G, H  v3 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]]
1 {8 ?& y' W3 m0 u% J* n1 a2 ]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]: }. A. [* l2 J7 G/ ?& U
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 A, K% r3 W4 [' J1 k( [2 \4 |8 X
neighbor-total
% n# G0 T4 F' Z1 m4 S/ [# I;;
记录该turtle的邻居节点的数目
- u: D& P. P6 _- B& P* btrade-time
  B" F  B/ [+ p8 Z0 x;;
当前发生交易的turtle的交易时间3 ]( L; g+ _9 H5 A( q2 G8 x( }: S9 y
appraise-give
' V3 h. ?/ r  l( |& C;;
当前发生交易时给出的评价2 Y& \% {/ H* x0 F! L
appraise-receive. n& D& X1 z  }' n& s  |, |, X
;;
当前发生交易时收到的评价
4 h0 U4 J4 d1 E: fappraise-time
4 w3 a. E) J; v5 M/ r; X2 d;;
当前发生交易时的评价时间8 O; P) b" P- M2 u* i. k1 i* d& t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉3 }$ j2 N. C, A/ N
trade-times-total$ i2 w6 |; R0 `  q1 A  F, ]1 T
;;
与当前turtle的交易总次数6 ~2 U. E5 u0 |
trade-money-total
; P  d  P$ `9 p7 e: p, U' K' ];;
与当前turtle的交易总金额6 I# X$ U9 g+ A) q' l! H
local-reputation, m/ r' G6 j, I9 l
global-reputation
. N4 D5 [1 G' g  d2 ycredibility5 s9 E2 `( R  b
;;
评价可信度,每次交易后都需要更新
5 S; X& A* z5 n& R  F8 j, }credibility-all$ `! i: m0 O. K
;;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
8 i& h' R; _% |" [; k
, e, \0 z& `; T$ z( n0 c/ D;;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( n+ F8 L1 G  w( ^# E
credibility-one
  G# B) }4 u' S1 b1 z  J4 x;;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& r, u" n/ x( O, {  m. T
global-proportion+ W9 z1 b/ w0 P
customer
8 H# l8 F0 ~+ w" {2 ]5 Jcustomer-no
1 [9 G5 o* j6 E  y: B2 U/ ptrust-ok0 T. a. a9 n1 O) T
trade-record-one-len;;trade-record-one的长度
) i3 ]' O5 O' W6 Y1 l; B7 ^]
; ~# i$ S& V) u
: b; G( ~1 [3 s. ^;;setup procedure! H' e/ F3 j' f( l
4 Z# ~, J. r2 n6 R! T3 c$ z/ k- z
to setup5 J) P0 m2 F% o6 n9 d
2 v0 S2 z! G  y( k0 l: W
ca

& T. w' [0 N  X$ B, H% U4 e; z! B; I# ~: p' J
initialize-settings

: w: P3 J# ~$ e- \4 ~3 L
# O( f; g- Y: P6 o* z! a, Hcrt people [setup-turtles]
& Q% c3 L( N8 g) V( w, a" ^5 [; b

' ^, p3 W3 w" H% n, }0 E7 lreset-timer

- c$ Y2 ]5 B  b4 C- L; @! L* E4 d. p0 \
poll-class
) F0 r& W# }6 f4 T- l5 |: {# x  b; C

( x& L/ t- b" O$ {0 Isetup-plots

1 N# b( J+ X: }, @' x+ J; V. _) ]  o9 G5 W2 h8 n7 n# K
do-plots
% ?3 ^0 c3 t$ v0 M/ c2 B. C% y9 o
end
" c. g  o1 D3 }( B
. J/ @8 D7 W. j: oto initialize-settings
1 M8 g2 \2 \' w4 w
9 Y( r  q0 `2 r* S4 F$ u$ yset global-reputation-list []
  i- c8 w9 Y& @( p
) F6 p% z, x5 N% g0 ^; e# ^" V
set credibility-list n-values people [0.5]

( A7 K; B% d% T1 ]& Y7 Y/ z1 X  s' @% X+ k2 i; y! `* e/ R4 n
set honest-service 0
) O# x; b1 e. j$ @  x+ h
' b9 _0 v$ P5 ?4 z. B
set unhonest-service 0
+ o" z9 _2 n; @) D  h0 y
8 Q  W( i+ n% [* Y6 \
set oscillation 0
2 s1 y6 \; j" C. d

$ V; H; b' ~5 [% _, d4 i  D$ `set rand-dynamic 0

: i. @) s( A1 }- h8 Lend, `, Z1 d% R5 B9 m9 |4 X
8 N1 P& ~) Y, x2 ~; R8 P( s' y9 ?
to setup-turtles 0 @$ X4 w9 A; Y% x9 O0 J; Y
set shape "person"
& Y. P6 H& B. Vsetxy random-xcor random-ycor! z9 l5 X+ r; c1 ^$ I
set trade-record-one []/ j' h* r' E/ _) ?( Y- U" u# D

/ ]- {" C7 y$ B' _set trade-record-all n-values people [(list (? + 1) 0 0)] 0 T% p% H5 q) t) X  D, ^
( Q% h8 x" U' r: |. V0 Y
set trade-record-current []% j1 _* m3 m& n0 I% D9 k
set credibility-receive []' H$ J* g- L- t- f! b
set local-reputation 0.5
. g3 m8 Y( j1 n9 l1 X4 V4 q, nset neighbor-total 0
  i& U! U, U7 fset trade-times-total 0
6 ?" S! O- O- P) y! p5 uset trade-money-total 0
# ~/ m0 R; ?# r9 D: lset customer nobody( I6 K  y9 m& I) r& k6 `
set credibility-all n-values people [creat-credibility]( n' W- v# i2 `( u5 A
set credibility n-values people [-1]
8 n) K: ]4 \1 f! A/ mget-color# W. d. r, P8 w2 @$ [* O% H$ j

  q+ X. v+ [9 K7 r7 D: Y4 [2 Y' zend
6 h# ]3 P; o- c& o  T/ Q. j1 b8 M( |  H
to-report creat-credibility
/ O) R/ |: ^/ {- Greport n-values people [0.5]
+ s" p: m9 }  ]9 c; I4 Hend) h1 D7 a6 u& L- P

. K0 ^' S: K; o! C2 Q, wto setup-plots
+ M6 {9 b0 x2 J- p0 p: O# Q9 @# S$ n: q* H0 I
set xmax 30
" C$ V; K1 W  Z  O

3 }# {& A: d8 d( Cset ymax 1.0

) ]) i9 c$ a; T$ Y( k7 O4 B% ^6 O  X" }% X5 y# G
clear-all-plots

1 r1 C( u9 A/ ?9 k* J( G9 \. F+ c' ?9 {( r
setup-plot1
1 Y: {/ `7 n, h% P! o1 t9 ]
! w+ u1 r4 ]! E0 n  {, |3 z% u, l
setup-plot2

8 y' T. w' T; ]9 p: E8 @/ l0 c+ h7 V0 H# s
setup-plot3

) i6 g' z9 d& U' {2 n0 Jend
: x# d! D  p4 n" p/ s, u+ F. J5 y" j5 @% k: I( j9 s
;;run time procedures
- Z. b8 K9 ~. e1 z2 q3 R. ^  S6 M# ~! m5 V+ d3 E
to go3 L$ z5 |0 v* L* y

' U9 c4 G- @8 l8 X' V& Uask turtles [do-business]

6 Y; W/ T, H( G+ W4 Jend- |3 f; A$ D6 E! C

4 J8 E- ]2 c7 p/ L% d) W3 Nto do-business
" V  c5 I* V5 ]

6 O9 X) K& ~2 h8 R: W# m: x7 J9 v6 ]' p  d6 s5 T. @
rt random 360
* ], c/ u- M& a0 F: S" W4 A7 Z
, _( s7 p3 F$ ^* N! ?3 F7 A4 w: c
fd 1
$ }! B  h4 A! r. w1 Y' R
8 P9 i) m$ W* m0 [
ifelse(other turtles-here != nobody)[

" |( J2 B+ u# n$ R1 K' `, P; x) x4 b0 @- I- r! v; }
set customer one-of other turtles-here

9 F$ R' G4 T! k* S8 i
- K6 \  l, u. k) A) j. Z' p. ~2 v;; set [customer] of customer myself
. U% T5 N1 a% ^  T6 c1 D2 g4 W
0 m8 \. Q: F  E1 _
set [trade-record-one] of self item (([who] of customer) - 1)1 B% q4 q, r; m' V- \
[trade-record-all]of self
- ?* G& d* ~( Y" F0 c- D, r7 F;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
, n( h0 _' d0 q2 p: ]

7 [+ O; f$ {  k9 K/ ~) Yset [trade-record-one] of customer item (([who] of self) - 1)
: l& r8 ~. L  b" @: ?. w# J, t[trade-record-all]of customer

$ f2 @( G3 y+ Q4 w
' N0 k, |2 D" aset [trade-record-one-len] of self length [trade-record-one] of self

& R5 b; @7 Z; C
2 C( V# X+ z  R; ?; F3 o" kset trade-record-current( list (timer) (random money-upper-limit))

; k8 t3 q) U$ U2 B- C( F! ]
$ |, d3 V/ K: ~' Eask self [do-trust]
( s  E% q, P9 F$ \1 H;;
先求ij的信任度
8 T; `( z$ K/ j* ^2 n2 m9 ^- d) T4 @
if ([trust-ok] of self)+ F. r) X4 E3 R' h" _' X
;;
根据ij的信任度来决定是否与j进行交易[# ]  U- P8 {1 r4 l: o$ o4 u  }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
3 g3 a  e' y# f% \0 L5 I5 g% ^4 D- y7 V" P2 Q5 p9 D# [5 q+ H7 j
[
, O3 m4 W( P# K

6 i; |3 q6 z, W; g/ Kdo-trade

1 Q2 W& T3 E+ C! z  q: H) q, A/ W  I3 k0 @# `/ s
update-credibility-ijl

$ n# [* n& M8 u# H+ d6 @/ }" p% B
update-credibility-list
% `! Y6 E( d+ h+ Y( ?$ L

  N8 z7 b; j( J3 v/ [: g+ F9 w; B
% C& F& L0 L1 Lupdate-global-reputation-list

! W: z# A- L2 A+ z4 x) W: K
+ b0 b7 ]7 c) c" n# l2 Fpoll-class

: s' P% X0 i& x/ ]2 u. J( p% h. t' c1 z5 d: Y8 t6 F/ j2 v
get-color

9 H7 L: t9 f6 {8 b& O
  ~8 s+ y  H; f5 g# y- x]]
6 \- }- X, [4 ~* t) P& S' @1 |7 d$ j9 B/ F9 `$ B
;;
如果所得的信任度满足条件,则进行交易
% i" _' u7 w- V( a3 }  j; i. {( x+ F& l2 R1 i0 R
[
  S3 J3 Z; {& G9 ]& o+ g

* j# M+ T/ O) Drt random 360
9 q0 q- L, S( V- ~7 U, R5 C

. t$ R% Z2 x+ z0 Z9 O" ~fd 1
9 T1 @+ K0 b, U5 z( Z6 H1 E" N3 J) J

  p' ^6 a7 k. N% i) G) T+ w$ R5 e]

/ v& b& s1 q; X5 r* I- Z0 [7 i7 W) ?- O: _) ]$ j8 h  O9 D8 _
end
! o1 c6 G, {' y/ E0 D
, Q( @9 I, j# M1 r8 c2 `
to do-trust
3 g: \  \# V2 _! }# \8 J  Xset trust-ok False
' d, i0 K+ k4 Q$ h. M5 \) n6 Q$ B6 _7 P% y* c+ J) x
# b" y& q- m+ \% h# j8 v
let max-trade-times 0
7 \" c8 i& s. @$ c+ iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]: p; [0 E, O6 J
let max-trade-money 0
  {' M7 R8 n3 U) V. _) X0 A! jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* y& s) X  o# ?$ F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 E4 S3 \, D4 [# Z" _. x0 f+ N+ Z  t, x5 c0 s6 Y( X, p

  o: z) l2 i) V, b) D' A$ aget-global-proportion, ^8 k! x1 f) f7 r9 L
let trust-value& p+ {$ f7 s5 ?, P& e  _, g5 a
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)
" G; M/ L4 }0 G& ~
if(trust-value > trade-trust-value), x( J# U6 ?. h$ v
[set trust-ok true]* {; i8 y; s, `8 |0 [
end
3 u8 D& ?0 U0 Z& ?2 h' P5 j
3 R2 y$ ~1 z5 eto get-global-proportion
% h3 t9 @$ ~8 L: nifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) O1 Y9 @6 V& k0 z% g; [# |" `4 D[set global-proportion 0]
  r3 o/ ^9 m7 Y" Y2 M" I[let i 0
! w$ Z" E5 E+ Z7 P9 W* E4 _let sum-money 0$ Q' G% h( K: ?7 C! W
while[ i < people]# x" c, U' g/ N/ l' Z
[
& z$ B& E* B7 u3 Y$ K. m$ [if( length (item i1 D$ |" W  e  U; Q! M
[trade-record-all] of customer) > 3 )
" x4 D; i, {8 Y8 E* G
[' A( C7 z' s( z
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 t, v4 n' s2 {9 {$ _1 `- q' H
]
: u& r, Z8 J; N* }]
& n* C% ]' T& l5 [4 C+ Olet j 0
6 t" c/ r5 H- w4 Vlet note 0+ @' @$ |" _" M6 T9 A& G9 r
while[ j < people]
' n3 Z8 n0 T' t[" @$ x" D" \% L+ _
if( length (item i
# y; [: t, V1 V) P; K[trade-record-all] of customer) > 3 )

0 K# `3 j+ H0 \1 p) I0 N[
7 }  {( {, x0 n+ r: Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ [# m2 N- z' g1 j9 t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- F+ U' n$ M  l: K' u3 c  u2 u$ t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 c2 e- y' \! A  b- u- I# X' J* u
]# N2 f# d: f4 F* W6 `. [, Y% X" z
]$ ^" k) Y& q* u3 Y3 q' J
set global-proportion note
7 G6 O" w5 u) h! o8 T]
9 Y' R6 ]6 \; R% Q/ y' Y  ?) ~end
. c& o  }# J' A4 ?2 I  b" m0 A# I0 \7 y- y
to do-trade5 r: g2 O! u, P4 h/ B. t/ o" v3 F
;;
这个过程实际上是给双方作出评价的过程
7 w4 a4 J! x- Q; Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ v7 |0 Q$ e1 y% }9 yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: k8 u! _. y1 Z
set trade-record-current lput(timer) trade-record-current
4 d. p$ _/ ~% w6 i7 x;;
评价时间
- B! X7 }9 `! q3 P0 @% t9 _6 E, Gask myself [
6 q- j. p  A3 R. d) Tupdate-local-reputation
. B5 N6 J# y  V4 Mset trade-record-current lput([local-reputation] of myself) trade-record-current
: b1 s' b, I% p]( Z$ e" q" W, W( I
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' ]" ^9 z3 f( S+ S* D" }; p;;
将此次交易的记录加入到trade-record-one) f4 y  l6 @( }# _) o! @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( R6 m& s2 n% D+ F% X6 z; N
let note (item 2 trade-record-current )
0 l/ T& ]$ L+ v% D4 ~set trade-record-current, o' A( L+ U7 L5 B
(replace-item 2 trade-record-current (item 3 trade-record-current))
* H( p5 t+ U+ E& w- d$ c+ _0 H
set trade-record-current* _. }1 i, L; N5 a4 M# I
(replace-item 3 trade-record-current note), q& u0 i3 s. Z7 Y' h! {6 a

3 F3 A9 p8 p+ @( f# |. D4 ~
% q) B+ l' g( t- {! Y
ask customer [
1 z1 D6 x7 U! C+ h, A: x  yupdate-local-reputation- R; S# }- w. g4 j+ v
set trade-record-current
: ^# D# w) a$ o- K; j(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  @8 Y; d# Y' q0 P
]) Y  `2 e0 w% [6 @1 f9 e$ E2 C

4 y( W4 p: r0 v* X- f2 R4 G

' F. {+ X1 B. Z; Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 [9 a# Y- z3 u/ k- {% g

" j( a4 ^- p3 e/ fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  K3 E) o( ~/ D( v0 q
;;
将此次交易的记录加入到customertrade-record-all- ^" O; ?) h6 c/ u7 a
end
* z5 |: |3 C# n. h. q% F- B
, _8 Q/ \! G1 \/ K) C% \8 Dto update-local-reputation
* `' L5 Y- ]6 g# ]5 Q+ j$ B* b( _set [trade-record-one-len] of myself length [trade-record-one] of myself# I0 W8 @& Y3 U; [0 T9 A

" G( x: U" W* G7 x) t
9 L3 c& K+ u3 X! G. d;;if [trade-record-one-len] of myself > 3
- J( U+ _! Q4 @; I3 ^
update-neighbor-total( |  @8 v- n% m0 S0 W, X& B7 r
;;
更新邻居节点的数目,在此进行
5 z8 L5 H1 Q6 x4 @! W2 i# w* G5 zlet i 3' o$ m0 J6 s- L' U9 E" H, d
let sum-time 0
; \5 _* \6 R' y/ |* Q/ W$ W8 nwhile[i < [trade-record-one-len] of myself]4 q& P0 A$ Y) L: [8 I) j0 r* L* }
[
1 c4 }2 d- ?# e1 H8 \! Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! K; g4 \: d2 M/ G1 o6 c
set i" z: z6 `$ ]- \% @6 G+ M, F
( i + 1)

# V8 t3 @8 ^) q, \# K]
) L5 h) g6 _( }let j 3  n; t% Q/ q2 L# X0 R( x) w
let sum-money 0, N2 n! ]6 g% q: @1 V; ]" X3 S- n1 a
while[j < [trade-record-one-len] of myself]0 J1 c& }8 D: f, Q: j) e- x
[
$ H; A- O/ m- @  h' r( v1 Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' G# P! l2 ^' ~9 P: G# T5 [" S( {set j
- ]; x# E% Y6 E( S% D( j + 1)

# s+ u8 r* h9 l! y* v]' z" g6 O! `8 O$ d* U9 X! m. c9 }/ l
let k 3. k( p% F9 C* e1 y/ S) r
let power 0" Y* N8 J$ D8 w! K( A& x
let local 0
2 k( _& m: C9 |. l/ Hwhile [k <[trade-record-one-len] of myself]# A6 a6 d# R( J& K, R
[
  Z! U3 C5 x7 x' L3 Cset 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)
3 m) t/ ?$ d; N) J' H& `' ~set k (k + 1)
3 Z2 ~7 `; s, j1 H! V]
0 q8 O+ v( m9 n, D0 G8 C% Zset [local-reputation] of myself (local)
2 S5 [. i* c6 [+ z* q6 a' k" Aend
, F% D* l1 X5 K; C) M0 l
6 f3 I1 w9 K% Xto update-neighbor-total! C4 ~. @2 j8 ]# X% }) F
: y/ T8 o( M  ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 n: O+ L; B1 Q# k, x, r4 u* o  E
$ v& a) k& z! M/ @
3 {+ z4 q, v( t4 M1 D1 H
end
% w  f$ R8 z" K1 ]- P5 W& l0 M3 T! c' b( V8 {* U* m4 V
to update-credibility-ijl 2 _9 w0 I. f- _& v+ f

, t9 z) O& \/ K4 Q. D;;
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。8 b8 H* i0 x- ]( |7 K/ i' }9 C
let l 0+ ?9 d  D1 H: S: _
while[ l < people ]
! _  ]+ x+ J6 ~8 F4 E;;
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# j5 e- I5 R4 w
[
0 x) p1 n, N& A0 g: mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 J4 y+ R% _# D' Z
if (trade-record-one-j-l-len > 3)- n$ Q' m: A1 q1 B$ 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-one2 w5 g/ T+ I" l$ Y1 m; w
let i 3+ k" ?7 F+ F$ f' N7 g$ ]1 F* D  A' D
let sum-time 0' m7 D" [; z) d* G& U) {8 J
while[i < trade-record-one-len]
0 }" z5 W2 [% s5 f1 _' t[
2 v" ?' x+ \5 m+ `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! ~$ o( w& {3 v; C8 X5 ]8 nset i
) J3 x% |: e8 Q4 r4 V( i + 1)

: X# K8 D" J4 R' e. Q, d]
: I# g  b+ a- u: v9 a. ylet credibility-i-j-l 0. |* U0 r1 T. H' [* W
;;i
评价(jjl的评价)9 n6 Q; F8 a: i" {) T
let j 3& L0 F0 P4 t4 Q' A& Z  J
let k 4% R5 r  G: P7 Y# e, m% c. }! w
while[j < trade-record-one-len]5 N' v! N  k, U, i$ x! [
[5 M0 s6 b( j6 Q, H1 X
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
9 U" p5 a# q% h. U. zset 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 E4 ]/ P1 i" v/ _# }8 l5 B; Aset j
2 l, J* O& d  K' I3 K( j + 1)

; M. k, ^% a4 b/ W! G) O! A0 `]
' H! @' {" _2 D; n# |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 ))
. L5 C$ ~) }9 z0 W. p4 [9 B& f: B$ w* W

* U" ]; O  k! S' [6 Jlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* e$ Z. k1 P3 {+ e: u; `  d4 q
;;
及时更新il的评价质量的评价0 n5 d, \- z  t
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- ?% V3 N- u7 y! A8 b) _, sset l (l + 1)0 N: O' j: e* X
]+ N% y' o, \. Y
end
8 Q, g  B% z5 M! }% I' ^% A1 b6 ?, x
  A  D; m- A1 k9 M, W* Tto update-credibility-list
, u6 v/ m/ v0 R& J$ {9 H2 [let i 0
* n- x! n" a% `# Mwhile[i < people]
; K' Q% R; Z6 ?9 r  [. |! v+ ~[& j0 t2 u! M7 @
let j 0  l+ Y# }; g. G
let note 0
2 t+ [2 Y- w% \" T* @6 _3 Blet k 0
% L" g% v. R# I8 k2 z;;
计作出过评价的邻居节点的数目
9 Z, h& [, k" W4 L" Mwhile[j < people]
6 l4 J. D8 g9 s( Z8 B/ R0 L/ T[
+ E' x# [# }& g$ tif (item j( [credibility] of turtle (i + 1)) != -1)8 _/ t6 `0 H- I
;;
判断是否给本turtle的评价质量做出过评价的节点; L. f$ ^* c) |3 |" c& F  N
[set note (note + item j ([credibility]of turtle (i + 1)))
3 C$ }6 `/ Z$ i& y8 ?( e  I+ R;;*(exp (-(people - 2)))/(people - 2))]
# i. b! \; t* X
set k (k + 1)  D: O* U7 G" g% S3 n, ~8 ^
]
/ j+ P+ G  B! ]" \4 G  Wset j (j + 1)% Z' x) w' R3 ^/ P9 u
]3 X9 ^$ h& D0 E( g, j6 K
set note (note *(exp (- (1 / k)))/ k)8 t8 ?' A, A7 e
set credibility-list (replace-item i credibility-list note)
/ B: M) f7 _' ]- Xset i (i + 1)
9 U5 Y9 M" F+ X* _]6 G8 {/ d" o/ v0 l* R
end
8 `8 A- m5 F# F2 W, `5 H' y- ]1 N9 l/ C# K- K2 k
to update-global-reputation-list
6 G7 h& k3 L) [( Blet j 0  A$ y; ]% X/ ?- {; R5 L' m, M
while[j < people]
5 v4 W" ]5 [" w9 D) Z/ X* E$ J[+ G' q) h1 ?8 h% j. j' b
let new 0
6 Z2 f7 _) _8 D5 o% E( Y' x;;
暂存新的一个全局声誉# p' p1 s# |4 j* [4 }, ~
let i 0: Z  A6 A6 d  Z7 F! |5 h( E3 N
let sum-money 0# `" J! o5 H! q5 l: T/ d
let credibility-money 0
7 i! {2 `, R8 H& A# hwhile [i < people]1 b3 k) {- f; O$ o. s9 R
[
# y4 C2 D, i6 I- hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 A8 _' m' N  O  q) m+ zset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))) r" W* k9 r$ \* K/ T
set i (i + 1)
& A# w# p5 T6 j+ E8 x]
% e( n* e/ B4 Rlet k 0& U( }) {4 u+ `3 D8 d1 m4 l6 m
let new1 0
+ j* }1 k, M3 Qwhile [k < people]3 L* E9 N- ^3 B" j/ w
[
+ Y; [0 f8 {* ]' P, J1 \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)  Q, ^; o- b9 A: K% Y( L
set k (k + 1)
) ~* @* o3 V  T  |" p* z]4 B8 U: {( H. s/ s- D/ n
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 6 f9 U: z1 s5 b
set global-reputation-list (replace-item j global-reputation-list new); E- z, q7 R0 W/ u: _1 v
set j (j + 1)
+ _. `  X* y, q' r. j]8 z+ R; c  O8 o6 [
end2 r+ a2 A$ G# C- t) b7 {4 {

) `0 B/ F" r* R" ]" D- c7 F
3 x! ~; Z, m  c1 F/ e* s* p( Z7 F" Y, }0 V5 K3 d
to get-color/ i# R# b5 [7 F0 ?$ s
- v$ N% {% r7 q$ j! B% [, x
set color blue
2 U" V5 B2 @6 Y# u  f5 {  y& I7 I7 P
end! Q1 n) d" x: E" ]  u
6 R2 C' i5 u2 l. P8 i, N
to poll-class$ S& G; [; ]" R# m* Q4 y4 d
end
) Z) Y) P* a6 i( z8 I8 }8 m( Y# h, m' c9 p  o
to setup-plot11 J2 q/ w: \0 E* C' L

0 s' a4 Y6 |2 l1 B5 Wset-current-plot "Trends-of-Local-reputation"
8 Z. [/ g0 v( h$ V. ?. `

8 H& v# f. X, t$ C. Oset-plot-x-range 0 xmax
2 O& w( a! \  p

8 o; z* O2 F8 A$ o7 Z" [set-plot-y-range 0.0 ymax

, C" P$ l3 b, ^, P* Gend
$ a- j3 m9 U4 U% W4 g& `# D& ~. {( y0 Y+ ?6 W
to setup-plot2
+ K" u% g1 h% v( K1 p
# ~' U' s) M' n9 q: Y5 pset-current-plot "Trends-of-global-reputation"
: {" X# ^6 M2 I

# W7 f% E7 ^  R# t5 |) V$ a7 xset-plot-x-range 0 xmax

! K! s/ r! p0 D$ N) d: r
0 M3 ~' ^, K. Qset-plot-y-range 0.0 ymax

+ Q5 d4 \  c: w: ]0 X- M6 qend* @- d& s! G$ y! C( V
' c4 G/ x' ]: z7 k5 D5 W3 t0 c
to setup-plot3/ c8 C% X  W7 }. K. ?

4 ]3 q+ T* r" J- mset-current-plot "Trends-of-credibility"

; ]  A- G0 f/ X" u% J
1 a( ^4 h! e( u( ~& M4 ?set-plot-x-range 0 xmax
4 i0 o. N1 |. K& H) u9 ?5 E8 z+ B

5 d+ t+ J( ~' v. L2 O; ?5 G% Pset-plot-y-range 0.0 ymax
. o2 |7 @: h. m5 C8 I
end4 k. }2 A- x( v5 y, W; b- V( o% F
2 d7 E& J% K1 Z& L% o$ y$ `
to do-plots2 R+ @7 M' s" I
set-current-plot "Trends-of-Local-reputation"/ n9 T8 Z( H7 Z
set-current-plot-pen "Honest service"8 u9 C, g1 G1 m+ i/ \" O' |2 I
end
4 P8 c) ^' @; m3 R! U
0 g  d$ z7 ^1 ~1 {! [. }1 h% s[ 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.5 Y$ i8 ?& i, e8 h# l9 d

9 s, M) w5 @. D这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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