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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:
" z) X& }9 _& \8 J6 Jto do-business 7 r) D) Q* ]4 h5 N
rt random 3609 O9 R, p0 \8 G8 E: O
fd 1$ N& ?9 Q% z! u& [/ O2 Z% g  N  |1 L! x
ifelse(other turtles-here != nobody)[
% h* @3 D- J, @  O0 a   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.2 t, j" `) C1 d* Y) O
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ s( E6 F7 K# G: k5 f4 u7 z3 {   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; K# m1 N! y5 Y6 j* ^
   set [trade-record-one-len] of self length [trade-record-one] of self
  Q% L5 R" Y: }6 {' `7 L' ?2 G   set trade-record-current( list (timer) (random money-upper-limit))- n% ?/ e& P/ I0 y' O" l
: d1 R2 M# _/ E* V( O. ~+ b) k
问题的提示如下:
" j9 P; [) Q4 C# ?% x9 g; L. ^+ E$ ]* H. l4 G5 e( y9 \4 Q
error while turtle 50 running OF in procedure DO-BUSINESS+ q) Q- k3 C) Q6 ^8 n, g
  called by procedure GO
( t; j9 f% n9 \: _" {OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 k) a# \  Z' O8 M
(halted running of go)
: c8 H! Q5 V8 l7 U
1 Q& t3 `) f4 h5 `9 y" s* e- t3 N* o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~~% m% s, S8 W1 m! S2 z7 D1 Z# E
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
5 f* k; p: R. _6 qglobals[
$ U' |/ r4 z! i% Exmax
  t3 Y. w0 ~2 `0 \5 W' oymax2 O; }) U8 Z* B/ x" G) @/ I7 @' w
global-reputation-list1 u! n2 \  c, i: _* y0 b+ m7 q
1 m" v6 S( Q2 M
;;
每一个turtle的全局声誉都存在此LIST: a2 T* @( q2 F# [8 `
credibility-list3 r6 a0 F: h8 A# f& f# X% J) {
;;
每一个turtle的评价可信度4 P' Y! k( B: r4 n: G1 X9 x
honest-service
2 C& z4 y+ s% {$ Vunhonest-service
8 s( L9 \. W* Y8 \1 ]oscillation& p+ W8 z& T; ^2 y8 a4 ^
rand-dynamic1 j, n/ T0 r. F
]8 i1 O2 E% r1 }. a- e

2 m- K1 N" b4 @turtles-own[) B. |) ^5 k, X
trade-record-all7 o+ }0 f4 M& ], B' B  q
;;a list of lists,
trade-record-one组成
4 u. j9 c8 i. R# R6 H6 I$ r' b" F0 gtrade-record-one
, H9 p) V8 F% y' n;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ G# o/ Y# _: i. v6 Y" ?# C! `8 ^. v
;;[
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 |* Z6 ^, \7 r& s" v# }
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]( e. j' c8 {7 [
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list
3 u2 x& p6 v. `* zneighbor-total8 m+ |4 F- H! G8 e- {! D+ h
;;
记录该turtle的邻居节点的数目: @9 ~9 k8 a2 @) k$ s
trade-time
9 d( N3 w3 P0 e+ J4 S! Y;;
当前发生交易的turtle的交易时间# Q( P1 ~0 I( f% E0 C! m, `# o/ R
appraise-give* Q$ W" k6 q1 f
;;
当前发生交易时给出的评价) G1 c/ l" ]- U1 l
appraise-receive% m9 J7 k+ f* J, \; x& Q7 k6 E
;;
当前发生交易时收到的评价' M& p/ H# h- s7 l: D6 H* B
appraise-time" J6 [$ U- M# t$ v
;;
当前发生交易时的评价时间" `$ o: E" i* |9 X7 P: E' M3 j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉8 r% p2 m1 D2 c- `9 _, Q
trade-times-total3 {( Y3 j" E. X
;;
与当前turtle的交易总次数
% K$ c% j; S0 m7 _4 L% J/ dtrade-money-total
4 `! W& Q4 P. H" K7 T# E;;
与当前turtle的交易总金额
9 a0 n: H. @8 }/ J& y# i$ X# zlocal-reputation: ^; Y! v$ _. g/ p' f
global-reputation0 e. }9 `) j3 O
credibility
' {* u+ }/ q7 \+ F;;
评价可信度,每次交易后都需要更新
8 ~1 S  I( _" m" I, Qcredibility-all
; A/ i. @: P2 ?+ V4 }, ~;;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$ Y  K3 M+ W0 d  |  a+ _  n1 e! D
, V5 S- _' K9 c( {) m
;;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0.52 G  F) S/ S0 U# @
credibility-one
0 N# o! m9 M& U2 u;;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- L/ @( Z- f; X9 w
global-proportion
$ u$ ?+ v$ e  f( c7 _customer
" ?' E% R: F% ^9 d: m/ H( pcustomer-no6 O, N: m1 `% H  K0 R2 @
trust-ok
- [' T0 n& `2 R" W1 @5 ^trade-record-one-len;;trade-record-one的长度
# d, d3 @+ @% x0 h. Y+ ~]4 w! O2 Y, n# F) K$ |$ G
0 t. V3 c8 ?3 j0 \
;;setup procedure& ~# }$ y8 K: W" J. C
9 f7 U4 _# |9 x3 J
to setup
* H2 f* [* e9 }1 R; M( q9 N9 M
7 W9 {9 v4 v0 W& m; Fca

# R; ^9 N6 K5 r
( g' Z, \4 a6 l$ R: b# |/ [# @- J5 S1 \  _initialize-settings

. M3 c, D% r8 V% R/ F" |, R% f- t3 b2 j, @1 O
crt people [setup-turtles]
6 |  q- S% U1 [) H. B8 e9 c6 v

& ^5 d" ^, o/ d$ Preset-timer
0 x& \4 k$ a2 S1 P" I- Z5 K0 r8 R
- J' u5 X) |, q; `* x9 t/ b& b
poll-class
) w8 U! e+ U8 i& x
  R" l8 G) z7 h% A  T- u
setup-plots

% ?  a. t0 Y4 g  C6 D8 u6 A5 `* ?- S) u. B# m
do-plots
7 M& r. b9 G/ n5 ^
end
: z  K. [; Y9 `7 p, e4 w: B0 y& \. D" u
to initialize-settings" X/ G2 }6 }6 C4 D. Y

7 U& f7 v: v; p7 L4 Xset global-reputation-list []

/ k( ~  f9 |& ^
1 O; @) F' ?. j, h" ~9 Uset credibility-list n-values people [0.5]

( s. @0 B( ~- `- T# }
* o9 z4 G4 d5 r1 A# Mset honest-service 0

4 O" L3 y! \; q5 J$ ?4 T* s7 ]) ]+ i$ y" h7 [4 g; O
set unhonest-service 0
- K' v. G) @1 R, R2 P- o
% C! L! L3 c" f
set oscillation 0
, `# Z; B+ Z; F2 q( J  i/ N6 j

" m" p! t0 r- ^% lset rand-dynamic 0

1 N! \2 Y8 O/ V& {$ H/ @end
! q. ^" }  Q- M2 p! V5 g# V4 S& G) [: n1 X2 ~
to setup-turtles
0 `6 U  K7 u) |; a& c0 m* ~set shape "person"6 [% z7 J" j2 `" ^2 m
setxy random-xcor random-ycor
2 v& O5 g. n' m( ]1 w1 ?set trade-record-one [], n$ X* z" f' @& Z
* y) r. I9 N* i4 E9 W( l* }
set trade-record-all n-values people [(list (? + 1) 0 0)] - N% A2 \9 V1 i1 Z8 J1 |
( L# F) h" Q5 X2 k  i+ t. \
set trade-record-current []
2 [9 [4 D0 n+ R/ w. p0 j  U8 B5 [: nset credibility-receive []
( d! C; L; b5 A7 `: ^" Rset local-reputation 0.55 L6 |( N. j$ P6 r; X% c1 V2 B6 `
set neighbor-total 08 P6 u8 q3 r. l% q9 Q3 s
set trade-times-total 0
" I8 M3 o/ ^, D; U  wset trade-money-total 0
6 |( h" O: Q6 {set customer nobody( K9 N  y( T/ d9 S; E
set credibility-all n-values people [creat-credibility]
; t/ N! }  k! G% ]' u) Vset credibility n-values people [-1]) t: w+ V6 F# C  g
get-color
4 ~& ?! K- ~4 U- p8 R4 h6 l& o

5 k) g4 h/ u: u8 |1 U# `end$ }$ \! [: A8 ~* O

+ j7 I+ o0 ~  N9 a# \to-report creat-credibility
5 w7 C9 V& \' I7 |  A! Ereport n-values people [0.5]
0 d6 |2 C6 }5 F- Pend  O2 ]; c$ @: b) T) U5 r* m

8 a( t' h1 A5 S. B) Hto setup-plots0 M1 a( X5 M. C# }* U4 W- p# X  l

* x; L0 U6 d0 x5 {! a4 i* zset xmax 30

6 m) A' L1 C1 n
0 W7 j. M6 K) Hset ymax 1.0

" j! A2 q2 `9 A' t
: ~# k. v' M% v3 Q9 j% [clear-all-plots
7 a1 ?# S1 |) |8 w2 Q6 e
$ v, {; B# J, J& H/ F" b3 q
setup-plot1

) L- d5 z& u, G) ~% G
& z6 B8 x: E; T" d$ _setup-plot2

! @$ D! w/ O; ?3 r0 n. A- D, Z5 j
setup-plot3
5 C) u' q/ C0 ]/ |. w
end/ l' W4 B$ v( G  h

4 k/ z1 X4 U* ~) {' t;;run time procedures/ m6 F( s# w! b6 r+ i3 C7 V- E

/ t+ N0 N- X4 }+ G! s& y9 i. wto go8 n! e& t1 \/ r0 M0 J/ Y
' _- {4 Z7 F! p  k0 j
ask turtles [do-business]
& l6 {1 j7 }$ \6 [( A2 D8 y4 z7 y
end$ H4 a+ s8 t4 x- l. v8 o, W5 V

' h/ @5 o+ O8 }+ I4 Y+ qto do-business
) q6 _* v+ |# A" Z

0 X& x  M6 A$ [+ l3 U+ |
: X2 S+ B' Z) Urt random 360

5 @1 @4 ?) t5 l8 N& {
0 i% O9 w0 `4 Y, q  xfd 1
& C4 {$ L( z( }! y3 t! D

( h- e$ x. U( c7 ]ifelse(other turtles-here != nobody)[
# v! D# G9 ?7 l3 a

: R  c+ j( P, E* |) w2 K. Y" r2 }set customer one-of other turtles-here
6 ~! @& i2 M8 I9 a! t7 s8 q

4 F+ M# c* }0 y1 z- [: z0 j;; set [customer] of customer myself

# t) d" q' j% s
8 P# h: H9 @" z' Kset [trade-record-one] of self item (([who] of customer) - 1)
# ^4 l- L4 h  l/ A% j& G[trade-record-all]of self* b8 ?% v2 t& c! u
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
* O) A5 V5 s1 }) H* b5 t  g, J
2 i! g. r$ d* w( ~9 Z
set [trade-record-one] of customer item (([who] of self) - 1)* A; p& A0 D' |: \; d: ^; s( z! P
[trade-record-all]of customer
- B6 G" P& l, G  O. x: Q

0 M; ?# p/ [3 @: {8 p, sset [trade-record-one-len] of self length [trade-record-one] of self

5 }9 G2 {7 w, b8 q" R  x, |( [, |4 m) N4 k; ?
set trade-record-current( list (timer) (random money-upper-limit))

/ G0 i" h/ d: V, j6 m2 v3 h- c; j- t- y; w) I) D6 G0 y; U+ o
ask self [do-trust]3 X( _. ]' d* U# `7 P  o: O5 y
;;
先求ij的信任度
4 z1 r) X( e* K5 N# f7 x7 L2 ~
* `, t8 u  v1 X9 R6 J0 iif ([trust-ok] of self)" g' s) ~  [4 A1 ]) C
;;
根据ij的信任度来决定是否与j进行交易[; s6 l' r0 Z$ g" E; U3 }/ B8 l' i
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
4 Q9 v+ R+ u& w* V
" q* g' m' V+ F7 S! K1 S7 d* |0 v[

1 ]% K" ?. p- ?% S5 [8 F$ |
$ x- |: Y3 i4 l6 m1 Ydo-trade
& v6 r4 r& w0 }9 h6 M6 M  s0 o

! Y* B7 y/ f) v5 ^& }update-credibility-ijl

: X$ D' v2 U: V6 x
4 ]3 S4 n* Y% H9 U! B, P, H! w6 ^update-credibility-list
' \. L8 F. O8 R& t. x, C5 K0 I
$ j( X0 @2 t9 }4 }' z
  `2 q3 u+ b  i! N# H
update-global-reputation-list
5 d5 B* e% a) G- @" U4 A) J# l

  g+ |  V# R2 a  Z( ~* m& Jpoll-class
# t$ D' W" l; Q" y% ]* \
4 `) ^$ |- B) c6 `. w
get-color
* s. h9 v6 t% h+ y* `" F

- v6 F" K% d( |. e! i- f]]
" }9 Q7 |- M: I: x0 L
4 }  B5 y. i3 F" D1 l( c; H;;
如果所得的信任度满足条件,则进行交易0 l( b% G% b9 ^$ V
* @. o" \0 n( x& W2 e
[

9 c5 B! l& ]$ l2 h- f- ]. m. H2 [$ g1 u( i  f+ R4 t
rt random 360
! |# T) Z; a. e

1 R1 O" l! T  W7 t$ s5 o! `# G$ sfd 1

- b* t  S3 y2 ?( u) A2 p
5 {$ a/ F/ y$ k% i8 l]
: y0 A, C0 ^. M/ i
+ X( c$ O1 S) b8 s5 L8 z6 `: s
end
5 g- G( x4 E# b% R- W( ?- ?  C+ H
, V' m+ E$ K" l' T" V9 l5 S# E
to do-trust 6 e+ C& G. L% z% o
set trust-ok False4 Q7 m. N9 R  m3 v
8 q1 d! P3 c4 p
0 `/ O# k, f  z, \
let max-trade-times 04 ?) b' v/ z8 i1 @
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ {3 V% b0 h' Y$ P6 v! c* t- c/ {let max-trade-money 0, K5 i, }3 g4 r$ L3 m8 `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]: V; R# e7 _2 h* q6 V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
1 m+ N9 |' |+ ~: U! w3 j4 q6 X
0 n; [) W! |3 {3 g& A. l

4 i& k) ]  c5 @1 h4 E/ N& Hget-global-proportion5 Q) m1 F! ^4 B% z; ?9 i
let trust-value
4 F1 R1 m0 g6 Tlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; s- q" R1 G$ I( d) {
if(trust-value > trade-trust-value)9 L$ f9 e6 E. B; @& n! b. q2 [
[set trust-ok true]2 L7 }, G: ~2 d; Q5 L
end  i# `' [" X$ N3 Y
+ }: F. V4 T- X& ?+ o/ t! C: _
to get-global-proportion
( S+ ]% ?& V. w! B& hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 X! L6 g# }, t
[set global-proportion 0]! w* ~2 K/ D9 l/ U9 b6 x
[let i 07 P9 X$ R5 U% \. e0 M8 X) k
let sum-money 0" D& z: b( t6 H& _& D% a" G
while[ i < people]
) f" D- t8 P. H: \2 ]" c[  p% ]" o# Y# }2 n: w9 u# h8 k" T
if( length (item i* g2 Q9 m  _0 T6 H3 G# k* N, O
[trade-record-all] of customer) > 3 )

& y- r/ m) P* }[4 z$ d, V* G* V  {0 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 G. c+ s9 C% Z' S8 ]. A]# p8 v( ~% A# m8 X  J
]
' G& K: b3 |2 z2 _* m8 |* tlet j 0  Y4 O) H  p. c
let note 0+ W+ t! y7 k7 }8 ~1 u  G, H- {
while[ j < people]8 x+ {4 u. m, E" j& I& P* `
[
6 m6 G4 N' H/ }6 I2 Uif( length (item i
  ]; S! P8 c" @6 l* g[trade-record-all] of customer) > 3 )

1 \! y" }: ~% B; f% S4 F/ ^[: b. o9 `7 \# v& S2 |
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
: V6 g6 S0 N0 E$ X4 g[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& w  z& ~$ ?6 t* k8 Y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]% |7 O! T! {4 _# L
]
& K& a1 C: x  i* T0 u8 p9 F]& A/ j/ T, o4 O7 J
set global-proportion note
) g6 k+ C) Q, j1 W. R' V, S7 R]
# ^2 M7 ~9 s- [9 R% n- Zend
3 T# e. [# p6 u6 i5 J
6 W) t: `: b4 s# V: w: O# ito do-trade
6 b* ~4 k( W; d* q;;
这个过程实际上是给双方作出评价的过程8 r+ a" Q$ @7 R4 ^! o
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价' _, p/ A/ F+ `) I1 g5 w( Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
& w) a1 a8 V, D/ dset trade-record-current lput(timer) trade-record-current$ D( p2 U7 P+ C8 j! x4 W( h
;;
评价时间
. V4 O* }5 z# f2 ?2 E3 Aask myself [
8 }: b/ s; R7 \! p3 o8 V$ Pupdate-local-reputation
5 ^* p6 t  @* X7 a. ^set trade-record-current lput([local-reputation] of myself) trade-record-current2 i! m2 c+ U- r7 j
]
: \+ t. C0 d& O/ M0 m; D! uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% _3 a7 \* f2 t& O- D
;;
将此次交易的记录加入到trade-record-one; q5 h4 A; Z0 t5 y0 _  ?4 E
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- L$ ?$ O4 m$ ?4 H7 V
let note (item 2 trade-record-current )
; n0 I( s! q! G4 sset trade-record-current
# a2 w2 r- ?( U  _9 K(replace-item 2 trade-record-current (item 3 trade-record-current))
9 X) S6 t1 s! v! J9 D+ S0 W- m% g
set trade-record-current
' i; _! |6 i6 l5 f1 x(replace-item 3 trade-record-current note)6 q/ W$ k: r" ?0 ]/ n
$ z3 {; ~* z* A5 u
0 `& M* ^. U0 L. |
ask customer [) u% d9 t- n6 o  O7 g
update-local-reputation
$ s8 p3 n) h* u. f6 eset trade-record-current
- m7 F) N+ @1 I, k+ B4 F: o, G. Q(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ {4 r: _3 V2 O$ L! b
], Q- [$ f+ ^: @$ X: F' ?1 O( F4 L0 r

$ u! ?; G) B; i3 ?+ l

: N- T) A3 N, X1 rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ D# t, x* A9 t* m
6 _% `& `% f9 I+ u* l0 T
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  k/ f# U  m$ e7 w9 m6 g" G
;;
将此次交易的记录加入到customertrade-record-all
1 w+ y2 a7 O! Kend
8 t8 S, N' E9 A9 N; s" _" @) r' @
; ~0 i2 i7 j" ^4 ~% J: d+ uto update-local-reputation' h# \8 Z. Z! ]+ I. L
set [trade-record-one-len] of myself length [trade-record-one] of myself
4 k' i6 v# }, `5 d  y3 F8 |* G, i/ Z: A: d+ y" t0 ^

, L$ p0 P9 D- f- d2 C+ L( E- H8 f;;if [trade-record-one-len] of myself > 3

9 X( g* R& c/ u3 O9 S& U" lupdate-neighbor-total1 L) c0 l4 q0 I5 a0 f
;;
更新邻居节点的数目,在此进行: t; t, j. [9 H( b; b
let i 3
5 q+ {% s( P& a; E1 x! Zlet sum-time 0
: i2 a$ U0 ~* c- F7 V0 v& Rwhile[i < [trade-record-one-len] of myself]
, ^% L8 l+ x, y[, k9 f3 X1 G3 u% X' S' Q( Y& O: \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- Z2 E. _! b9 @0 {
set i
! X& V+ O0 L2 ~/ c( i + 1)

6 ]" P( t: j5 V  }/ H) `]; J9 S) W4 U. b6 j' X8 Z' S
let j 3) g  `, q  d. t3 S" h
let sum-money 0) ^3 F% q0 c  p8 o+ x; `
while[j < [trade-record-one-len] of myself]" n2 u( j; A" k
[, Z6 q+ J" R( |& [
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)0 N3 @! [- g8 u) e) ?, J
set j
3 @* S0 O2 f* P( j + 1)

+ Q% L' {/ Z, _& H$ y  c]
4 i' o, Z/ S. P5 W1 [$ mlet k 3& w  v6 o8 u: F- c
let power 0% b( z' H) J* i1 s1 O
let local 08 _( f5 I$ d& A, O
while [k <[trade-record-one-len] of myself]
, i) Z0 a/ H" K2 n- S( ]7 ~[
! t8 z: h8 ~6 l  gset 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) , Z- N. F7 `3 N2 ~" y
set k (k + 1)
( I# |, f6 D; E) K], E+ T7 Z3 \; C7 w# |9 o+ B' N& Y
set [local-reputation] of myself (local)5 T# M- v9 z( J3 r( r3 @
end1 l8 \4 G! {; O  c2 ]

' n/ a8 W9 P6 s- m0 }to update-neighbor-total/ j) o2 O9 B8 d4 O, Q: J' ]

- X7 s: Z3 D' O  N" i( @5 g5 Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 w. V3 o6 W( \  ^3 p1 Z
0 q, c. j5 E# J# x9 [2 E
% O2 [3 _* I0 n/ \; D: `2 z& a7 V
end
0 r/ W! \# x' O! |) a7 S9 _/ M* B7 H3 i. U
to update-credibility-ijl $ H- F1 {5 F0 I; |' P* r
3 N7 E2 D0 i$ Q' E) p2 I# 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。/ W* d% n7 D3 B' l5 h- d" }+ D  |
let l 05 w) p2 `; x' J( b
while[ l < people ]
+ P- z- X: t+ d  ]9 l3 Y;;
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" A% z3 F) m# O, g
[* O! y9 N6 a5 q! F9 I
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)' V2 n1 q8 \3 ~+ n! P
if (trade-record-one-j-l-len > 3)
2 }* n  P2 I& G" J* ~8 e' {3 C# c3 Y[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one5 V6 C* n3 w; l' B
let i 3/ Z" Z- `: u: ]' G$ K
let sum-time 0
# V5 E, X9 D2 c0 r5 jwhile[i < trade-record-one-len]: A+ V9 r. B" q+ v& {" P  e: y& w
[/ ]7 i3 A: q( h) F  j# |) M5 _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
! L5 a' `6 P; o! Uset i0 s. g& a, a; B) e$ B" \5 H
( i + 1)

: ?0 `' R! T: v/ x: k6 y. Z]
. [( l! ~, _% X1 D' W0 Plet credibility-i-j-l 08 {+ ^& ^; W1 y  B/ K
;;i
评价(jjl的评价)0 Z9 F9 A) X% z0 ^" }) a
let j 3
( D; s3 l; k3 f) W5 p9 s& Ilet k 4* c* V8 K0 E# F9 U6 d2 c
while[j < trade-record-one-len]8 a: s5 |! U& ]1 V) W
[
2 y7 A3 D, ?, u+ q! ^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
5 c$ ~4 i$ j; T2 u9 o4 c% kset 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 l9 O6 n1 T. a' S1 g6 T
set j3 ]) z  R0 t8 o
( j + 1)
& ~* M" @# k, p& _3 b
]
1 \; x$ y/ A8 R0 U, |% z( `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 ))6 I: }8 {& v; ]: q* ~( P4 Y' q) R& x4 ~
3 ^( L4 g6 U9 F' z  p+ p# i/ S
% K' `# Q- W* A/ S+ N1 B
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
" i1 h: R. ^1 R# @' H( h;;
及时更新il的评价质量的评价
5 Y5 w% K* h( _% S; bset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
+ u! x. P* G6 ^" ?3 k6 J" g3 gset l (l + 1)! j4 j' Q, g! Z& S! _% p, H
]
3 E3 f  R' h7 i& Wend5 n8 @7 d: L- H! h# R$ b
0 t9 V* n0 |6 N- g5 W' L8 r) E
to update-credibility-list* j  E9 U1 i( e( w& J9 o
let i 03 d* E' S* }* ^& ]6 ~% W2 L" V% ~
while[i < people]; W4 v  ?, h( Y7 W& `
[' i9 B# M2 Z. e/ o
let j 0& ?7 Q7 T8 ]6 l9 @$ b
let note 0
9 \( y2 t6 z' i0 d6 a5 [4 f0 G, O& Vlet k 0
, l) e/ f! }7 I6 M1 J" f8 o7 y7 V3 l;;
计作出过评价的邻居节点的数目
4 J" X- q2 j8 hwhile[j < people]" u8 F3 G% i5 u
[, O5 B0 `1 Z# A; y( A
if (item j( [credibility] of turtle (i + 1)) != -1)
6 n# l% [# I/ d2 j; B" t;;
判断是否给本turtle的评价质量做出过评价的节点7 e* ^# L" W+ z4 V1 ^  p8 F
[set note (note + item j ([credibility]of turtle (i + 1)))
7 M% p+ K/ u$ B, y1 n2 r8 S5 ~& x4 p;;*(exp (-(people - 2)))/(people - 2))]
: c/ C! F: B+ [5 y# U
set k (k + 1): k8 k- W# W7 w$ U9 I
]
0 {  }% K) K7 m$ |( Jset j (j + 1)
' X& u! ]' U' |3 C5 {' d( w]
- `) }8 R( ^; s+ J6 ~set note (note *(exp (- (1 / k)))/ k)
8 u" [$ Q6 x1 f( c; j; H; j( b3 rset credibility-list (replace-item i credibility-list note)
# i2 K8 y1 L3 K0 Wset i (i + 1)/ O; v0 g) h, i. L8 Y. Z/ [2 m  ]
]
9 V4 n5 f( t# l6 Z4 jend8 I' t+ S1 G% T+ Q- T! X9 H" v

) i0 G" ]/ P+ E; Nto update-global-reputation-list# s* M0 V, r. Q
let j 0" `1 ^4 u" k; A/ f
while[j < people], a( r, ]. ~% f8 ]! T+ I* m
[
7 e" G- n( W: w' ulet new 0
) p- |* g& j5 D& k! R; d* Z;;
暂存新的一个全局声誉0 J- w# z, Y) y. c1 t
let i 0
9 Q5 I, d6 R/ Tlet sum-money 0
) D" J" h! ]5 klet credibility-money 0$ l/ Q, N) \; W% I4 H, ]% U
while [i < people]# P" h# o. P. M% [, g- ?
[8 a; I# U) w; u& ^* u, m7 f! E; u: u' i
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))$ J/ _- f6 j3 r& w! y- v3 g, u; P
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  j/ W, j: _, L: |set i (i + 1), ?! b! D7 U6 A3 I) \
]
: e6 ^! J; I$ [/ F2 K8 M) n1 \let k 06 z1 D* d6 Z4 Q$ L. n' d- z$ |* P
let new1 04 n2 V& |( s) l7 k2 K' C0 t) }$ s
while [k < people]( O1 [% D% {  p% M$ k& k% ?: Y/ X
[
" a  P. @: w" L  Vset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
1 ?; w  S' d  M3 H! Xset k (k + 1)! ?' H2 R; s* n- V; Q! p
]
% V9 i$ U! ]4 X' J1 a- pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 p' b" ?; u2 m) q- Z0 J* R" y5 e4 Qset global-reputation-list (replace-item j global-reputation-list new)
8 @/ Y$ y9 S1 m! j+ Aset j (j + 1)0 K" h  F3 F. K/ @" W3 s' G
]* v+ {6 ~3 b& ?' |% @3 t
end9 m2 K1 v5 p: d1 Y% ?

2 D- {6 O7 I: t" S, Z5 T) j! @4 @6 G$ F

4 }6 k- l! j- g- I) eto get-color' ?* K2 v" j. w8 R8 r) F/ a
$ z; w5 [+ _( d0 |
set color blue
! B9 `8 u& @. y( j7 B
end+ s5 j* @6 u$ m' d1 N: p
* V3 ^% W# i" [; b; w' w
to poll-class' O  A2 e2 y& c2 P
end5 L! p% h( V1 V- {6 F) h2 `6 G' N+ {

0 @* P# ^7 V5 L( \to setup-plot1
/ i7 k! D/ Q" e) }( f! Q8 W% j# E% f2 y8 t( e* z
set-current-plot "Trends-of-Local-reputation"

( D% F2 `. I/ k
) T4 R, P; s) V" xset-plot-x-range 0 xmax

% i5 E7 W# w5 g( E! D8 H  x( k4 x2 U9 D* j3 |0 o
set-plot-y-range 0.0 ymax
! k9 L- y% Z# l7 M4 u/ ]3 m
end
+ ]. }; o/ g# ^! _# {/ _" O! G1 W
to setup-plot22 l8 Z: ]. l2 z% Y  m# _
0 l5 z/ [) P7 @
set-current-plot "Trends-of-global-reputation"

( O9 [$ u  E6 ^  Q9 T7 S
& W" m4 k9 G1 p$ V! Eset-plot-x-range 0 xmax
4 d) ]! b( q. o: l* n3 X

; b/ ^+ c: v* v$ d- O3 V2 zset-plot-y-range 0.0 ymax

: y! c# C# K* @5 Fend
  [4 u' ~: Z( Y0 v0 ?; H  T5 p' c. M  c8 N# `  P
to setup-plot3- d: ~2 R. a9 E" v" k8 N: g

9 w' o! ~9 O# \( t$ X6 W) Mset-current-plot "Trends-of-credibility"
  o/ D" S/ D! C) M
$ y* U( O7 m( D  g; e
set-plot-x-range 0 xmax
8 N3 \) Z( @9 ^1 k

* G' n; V: a: S0 a) j3 Eset-plot-y-range 0.0 ymax
- I- f+ {( o' \8 R
end
' h9 M' N+ B6 p0 A$ ?3 N
+ F: r1 r0 c0 f# N7 e7 ?, r! Xto do-plots/ o9 x: g( P4 r# J" K$ H6 G# w
set-current-plot "Trends-of-Local-reputation"/ T+ X3 i2 h7 E; F. D4 l# d2 n
set-current-plot-pen "Honest service"
/ g8 y2 b  X9 P5 Q5 Iend9 {5 E& P3 [: m* e4 C" ^! p

. H! T' t6 c+ ]2 x2 ][ 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.8 U7 Y& p6 G: f1 q
' S0 t" @1 [0 r3 W
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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