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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:
6 ~/ Y% |9 S* Y/ r: W! ~to do-business ! _; J* x. ?# M" b! B1 _. E
rt random 360
# ~, i0 N; j% T0 B3 h' ~3 k fd 1
* u% K$ J* k  V) P ifelse(other turtles-here != nobody)[  i7 s( 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." K- B4 y5 @- ]" Q4 }; H+ U; J
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    / p: l$ `' T* Z9 y% Q! ?9 P& O
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
5 d$ ~0 f4 l, i9 D6 _- m; F   set [trade-record-one-len] of self length [trade-record-one] of self& h* G( P3 R; i+ u) ~
   set trade-record-current( list (timer) (random money-upper-limit))& V! j, y; x( @* [7 e! @2 u- E% o

2 S. T8 q+ ~; d7 G' Z) }问题的提示如下:7 l- b' W6 |- J
3 j) f/ E; a: r; ~) U. F
error while turtle 50 running OF in procedure DO-BUSINESS
  j+ n+ B. h1 F* o  called by procedure GO( Y* K( S, m% ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 G" J/ i1 @: B& @( p7 D1 r, \
(halted running of go)* A2 G8 ~4 x, o0 o" x/ e
, \# `. c$ d3 t/ F/ X4 B
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~~9 J$ G+ u$ ~4 x$ u0 ^: w
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
, s8 s+ X" K. V# p( A2 @globals[
: y2 y% r; e& N+ O. }- ^. Y; Y9 jxmax
) j. \, w) {4 r1 X/ y0 d6 {ymax
4 D, J6 x0 c6 i, P$ ^5 D, Xglobal-reputation-list  w" y4 r' Q1 H% S" g  W

' {* n$ H" ~$ ^;;
每一个turtle的全局声誉都存在此LIST
( h" F; h2 K( h: Tcredibility-list
2 y5 J0 B2 f, w9 l1 e;;
每一个turtle的评价可信度, L! F, Z6 t, Z0 c- z* E" X
honest-service0 J( G3 p+ b$ G$ D+ Q! v+ {9 D3 a
unhonest-service
' E8 q0 O3 R0 L( q% d. W4 N& `oscillation
! t1 m0 J  {6 l/ P3 ?) Trand-dynamic
" D; _$ ~$ R/ ~' g+ e0 ]]% h# ]& L. H" Q+ U
/ E% ~$ q: |) R* `- q
turtles-own[0 k6 X; D% Q7 p. T& F
trade-record-all% z% I% M7 g8 G) {. S2 y+ O- a
;;a list of lists,
trade-record-one组成4 z7 n: \2 n/ \& Y0 ]2 y+ R
trade-record-one0 T1 [. t/ ?& L" E
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 D9 c8 B; j' S& {* _, t% D

) a9 R6 J4 \$ ?; H8 L& R$ {;;[
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]]
. n( [+ m( M3 U! G- Jtrade-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]+ F! j3 H( ?# c  o* e
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
& S, \# p  a( k& W- a* j$ }: tneighbor-total
& M# }3 p% }( [  X% ~! u;;
记录该turtle的邻居节点的数目
- c6 |1 s+ e- U1 K) L# O1 ctrade-time
- I5 s2 Y( @' R6 l( K$ E;;
当前发生交易的turtle的交易时间( e% `0 |& z( z  B7 _" d! V: @
appraise-give3 a, O' c* E* X7 v. |' ^
;;
当前发生交易时给出的评价; F0 e( @( j# Q9 W- t; `
appraise-receive  |$ }  r5 r8 a+ a/ o3 p  K3 s$ i7 a
;;
当前发生交易时收到的评价
& ~; k) b  z# F6 Oappraise-time
# r* c3 p( E  T0 n;;
当前发生交易时的评价时间8 g% B3 p2 ]7 i2 ]  ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉/ |# p6 u$ P' v1 o! z% H( F( }
trade-times-total6 k' Q1 E1 b+ T, j1 y
;;
与当前turtle的交易总次数
- `7 `5 p4 j" L7 ]; btrade-money-total1 A4 N7 [. Z( q) W, o9 [7 G4 }
;;
与当前turtle的交易总金额1 ^" H# F( s5 _
local-reputation$ W0 i$ Z# b. X& i9 \% U8 }9 }
global-reputation
  ^$ ]- W0 e% w* Q# s+ wcredibility/ [5 t  g6 W. e1 ~, M- k
;;
评价可信度,每次交易后都需要更新  y% D* X: o& {0 \
credibility-all
& n0 S: G$ N1 \/ h' w* y4 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8 K' {# N; p: x4 c4 v+ {

! S( }+ b. k  i# a  h& @3 U;;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
5 s# Q( B8 P4 J' ccredibility-one
  l* I( U; {& S$ }6 T;;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* g( u8 e) @( b( `4 }
global-proportion( K9 B" x1 H8 w9 C
customer
2 q2 e1 d# u. }& B8 D. Zcustomer-no! z+ P# u' j$ D# T/ B% A
trust-ok
) N7 d- L  v2 wtrade-record-one-len;;trade-record-one的长度3 }1 l: e2 k: M0 m- y8 T9 W
]
9 X* M, g3 O2 K: t0 B( A6 ~
+ \* I! E! U- ];;setup procedure
6 A% B& |: _2 n- k% ]  z" {( K  [
( v1 {$ K' |% P: V7 v9 ?1 Xto setup: c2 U, K0 E$ `: T: A# D  l; v/ b. t

7 N) e: r% h$ }$ p7 B* L5 wca
& b/ Q# q0 T4 K( D% \
7 `* b% J. o2 ~5 K0 ^$ ^) [
initialize-settings
! n: y; r( h1 {# Z- t- D1 J5 D+ N7 m
  @' H( y" C! j' R" t0 o
crt people [setup-turtles]
- F6 E. Z" X' C  U% {) T/ c% F

& J% S* H+ I6 L7 M6 dreset-timer
8 R9 y' |! a% E5 Z8 a

) u6 i; a+ ]2 O1 |! v- g& Jpoll-class

0 f" O$ f* b( a1 X
, [9 W3 K2 M& Q5 h7 m' y) Gsetup-plots
( k2 M- t' D7 F5 n: \
( `1 m, {# J  I  [% [6 [
do-plots
* S9 i- }6 Q5 \% D5 c& ~* C
end+ T! b( J1 s4 a( w* Q+ M

. J0 G4 a9 M) Y) D' q7 x" O. Kto initialize-settings( o' w6 R8 A) K0 E; p' I  Y

4 {0 x. T& |: C. ]8 Jset global-reputation-list []
2 J' [5 H2 ^4 }; \2 T/ ~9 H
7 ?. h" O% R9 W) D' A
set credibility-list n-values people [0.5]

: H$ l% p; Z% V8 V$ \# d! ]7 o0 I" f7 j0 x/ |9 R' s
set honest-service 0

' x" S( p7 [, |' P# b( T
; z! [- r% `; m6 E+ nset unhonest-service 0

3 L9 v' p, ?7 l: I  Y$ ?/ @1 Z6 N  b! S) t
set oscillation 0
, S. I! n- N# W+ U& }
. V7 j; z% k4 A; R/ U5 q
set rand-dynamic 0

" w0 }% O6 {8 N' k+ `: W* Dend
& Q/ w! l( c7 B  M
3 b$ y: ?5 ?) I. {1 Yto setup-turtles
) ~5 t0 z" t$ n% F) uset shape "person"
/ h( _9 I/ `2 H/ g* z/ ssetxy random-xcor random-ycor8 `8 f6 m4 m! [: @6 O' B) V
set trade-record-one []
% O5 Y- j- B# Z
/ T* k3 L/ U  ~% U# z
set trade-record-all n-values people [(list (? + 1) 0 0)]
! }9 |( V  Y1 N# m
: `$ A! _& g6 j+ y# o& w
set trade-record-current []; h1 D" O$ v+ n0 c
set credibility-receive []
# I8 v- E; w) |" l7 i, X/ B5 Rset local-reputation 0.5
* v$ a$ ^3 p6 f' c5 y/ bset neighbor-total 07 P( {+ L/ m* `8 Q2 K. L2 W$ i- u
set trade-times-total 0. N( T$ Y# G+ J2 g( j# b, [( c8 P
set trade-money-total 0
  C( I9 X, b9 u( }& L% [, }set customer nobody
8 Z* R$ P/ u1 P3 q1 Z/ Tset credibility-all n-values people [creat-credibility]
- c4 G! w- g5 Q$ r2 |2 H& \. yset credibility n-values people [-1]
" s/ G+ S, E7 c4 h1 Iget-color
, i( }! [4 J( M* t4 F
$ |& ~6 O4 ?; P! e6 F+ \- t% W
end6 f2 B7 |2 C6 ~8 m; Q& @1 V
/ @3 c5 J1 u+ U$ b. U  }3 Y, ?% v
to-report creat-credibility) X2 T" L3 c8 ]6 @8 c1 r; `
report n-values people [0.5]
7 E: A3 o4 ?5 g% ], _4 Z! aend
6 l8 G. m% f7 t" `8 E& v% P" j. `2 I
( V- \( e8 p& a; `, e8 }to setup-plots
. }: O, W; X; W; O' e4 I( W
4 E1 d! y9 H4 ^: q* c/ {- Uset xmax 30

2 Y; M/ _9 G- ?: c$ C* g* s
* @  Q4 M( V+ d6 I! I1 p% a0 Sset ymax 1.0

- w+ b- Q0 u% i( }& U1 V1 t) V
2 H. O" T2 |, ^. x1 ]  t6 Zclear-all-plots

* W& F- R+ U) f' ]+ R* z0 D, c) M9 a, b8 s
setup-plot1
" |) d7 f5 s# c3 v7 T
! R; M" c; h4 w1 t. J3 g& [7 f
setup-plot2

  f5 Z- g) K  W2 d/ w+ |6 p, K0 e5 S# v( w
setup-plot3
6 J6 r+ i5 I- z4 ]! F: g
end
; [5 e5 L0 ?* Z( R
' [+ B* u/ i4 p;;run time procedures
& D7 W" Y* ]1 B- M( x5 u( S+ ~, J: U+ r. }7 }4 a& w: |- R- X
to go
  X# ?2 a! k$ Z$ J, V+ t
0 E  v! G" t( k$ j# i' pask turtles [do-business]

  y, m6 C9 U2 i9 u: v* gend
" ?4 d6 I3 l. Y6 T! S* `
# ]3 f4 u# H8 @# Zto do-business 4 L+ A! r* \' }$ `, U5 F
# \/ B) X/ ~% S- R7 R! C1 C

; h, J5 C( B# [. U5 Prt random 360
$ y9 y" x- q& Y  V

' j+ }" W' o/ p" Efd 1

3 p$ x: \" p7 `: ~% a  K
( {  `; f$ W8 M+ P# Q% E/ A9 S  Wifelse(other turtles-here != nobody)[

0 M( |" m( I: W* s1 x5 X" _$ h8 D! i  d! j5 v( Z7 ^
set customer one-of other turtles-here
& `2 a9 m7 w; m6 c6 d
7 f* J' F5 K) o' S' v4 V3 Y
;; set [customer] of customer myself

  a; @( f8 t. `9 q6 ?& F4 X/ Z! L, f3 z# {) K0 o
set [trade-record-one] of self item (([who] of customer) - 1)
4 `$ }8 X) H$ b- J2 W[trade-record-all]of self
6 H- Y: w! l) o$ D3 b& J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

, J' Z5 G# R) _4 o6 L! o. x' L8 h% L0 n' ]2 I: S- E( T
set [trade-record-one] of customer item (([who] of self) - 1)( n& {; ?1 a9 w" W# d
[trade-record-all]of customer

4 x# a& n8 V8 i2 K# r% V2 {+ v' V
set [trade-record-one-len] of self length [trade-record-one] of self
4 w% x6 F/ S, U0 u

/ _$ J. u0 z1 C& Gset trade-record-current( list (timer) (random money-upper-limit))

) z1 g" Q5 F/ D1 {8 J8 L) ~. {6 Z7 x" O( u6 }4 [$ c1 E  e& x
ask self [do-trust]
" o! S  h  ]3 U* r% b; C6 D;;
先求ij的信任度5 U9 A( i$ e9 S# r+ F- {
7 a% x( S. T" f( [  g% g4 V
if ([trust-ok] of self)
) H2 \1 D1 [2 ]0 ?5 P;;
根据ij的信任度来决定是否与j进行交易[
% I- z7 z! h% W) T4 |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself2 s# e, s# e) R% g
. S0 Z* J8 O: I2 S# ~! O
[
9 G  y- t2 @! C# O4 l7 ~. \3 j

; m% W6 Y$ P7 k( udo-trade

: k9 s+ y& k7 b9 P
1 T0 @* r, t) K; w2 p" ^update-credibility-ijl
" Q  R2 E+ A: I. L
/ m9 D5 p0 F  v1 `
update-credibility-list
% ?& V, M) o* U% g

6 X5 L+ [1 x* e' Y* Z6 M
: ^9 x+ t+ V6 j# W) V2 J/ aupdate-global-reputation-list

  E9 Z- P5 W6 x8 d; i
# G1 c1 P, m# E7 S; m1 X0 y+ Fpoll-class

4 s7 ?8 f& }) l% E4 x3 h5 t% @3 s' ^0 u4 a" J
get-color

% u. H9 [1 Z, O& t* H4 S$ h! o3 s$ z. M/ X% a
]]
4 K/ F, p5 F6 A# ]" ~
/ |* m0 t$ D4 b! M. Q;;
如果所得的信任度满足条件,则进行交易% b' y  K8 S9 K

  M2 K% O6 Z8 R9 \$ D; P' S+ f, w[

6 D9 g1 l2 `5 S% a6 H! G7 _
4 {5 ^( z- I+ L3 C3 Crt random 360
# w9 f# T1 H6 e% V/ j

( @- n. Z  b# w, {$ pfd 1

' ]( C8 a8 b7 Y6 t
$ Q9 Z! G# ~/ D/ ~- l3 R; z]

& L" w8 _/ R' J) w/ y* q2 l+ }1 N
) C+ m9 r, l$ c) Z' W- }8 hend

) ]/ B% n: J8 t% ]& V  I3 |4 Y4 V+ `$ @. o1 Q. ~
to do-trust
4 n8 y# `2 X0 P! u# r7 rset trust-ok False" M; A1 z) N9 h& p# A& I1 b

1 D1 s0 n0 o$ \/ \. T5 M
# d0 _( r5 V8 V+ M" H8 Z  W
let max-trade-times 0
9 p3 M9 G4 e; O/ r$ K0 s' Iforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 |6 ~$ D1 s1 b) b8 D& [& k: ^let max-trade-money 04 M* V& v* Q3 `5 x& j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 Q% i& G3 ~' O* E1 P# ~
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' f8 s. q2 p4 \9 T6 S# {
1 _5 R0 a4 Y# [
9 M- y: r- e0 k7 J' X/ d
get-global-proportion
8 J, Q+ A1 G. M+ Q. S: Xlet trust-value
8 M. I5 J1 d  }% I& A2 klocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' w. `7 N' h. _* ]" E. P9 k, F
if(trust-value > trade-trust-value)# `. z2 |; x9 V  P. ^4 d
[set trust-ok true]
7 X& X/ {+ O# uend
- ^$ I/ I/ \- \) p" T; g6 w2 Z* Y) ?) d. f* R6 J' l. Z7 `3 b
to get-global-proportion
9 l4 k) y3 Z' V  n2 fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 ?1 Y+ p( R+ z  s[set global-proportion 0]7 X! C% a7 e. c6 v9 u. V; o
[let i 0
7 O7 ?$ L: G! z( K4 Q- P/ A6 Zlet sum-money 0
  T- s% e) c2 _0 ^; Z/ Lwhile[ i < people]+ m9 {$ q! P- c5 {7 o1 d# I- `
[
+ c  }( h/ p  b1 o* d$ pif( length (item i' F% u# x4 V" _
[trade-record-all] of customer) > 3 )

+ Z5 g! X. @8 B' d6 X$ w" C' p$ |[
% s4 F) j, ~5 \6 g9 u, Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. l# c" j9 Y/ k& G. M* ]. W; w* W]
7 A$ d; i7 z/ U/ G- D]) v- V5 Q4 C# G) \5 z9 z3 J  H/ i
let j 0
& O) k5 [9 o, b5 s: B6 Mlet note 0: s9 e8 M9 q: V1 c
while[ j < people]
( k8 s6 T% e% F  j" }& ~. P* d[
4 b9 N1 W5 K2 \5 ~( `! z5 s- wif( length (item i
  j! A- c# r7 D7 f6 N[trade-record-all] of customer) > 3 )
* T3 O& {+ V' Z$ o. L- c1 O
[
4 k, u8 U* i7 u7 |* _1 w" T, Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 h2 m! I% \( R: D9 S
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
- E) z7 G9 d1 \; T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ i9 d2 D# l8 V+ K]
4 }" I& X$ e( o" K0 u. N]3 j8 {9 h6 h$ ^
set global-proportion note
7 s/ Y* |# q8 {; X6 b]
0 Z, r3 s6 M2 R$ p4 gend
: H; P1 {/ x; i6 g3 n8 y1 K  d! ]9 |6 D/ J; p
to do-trade% V( a8 j8 L) g4 Q3 }* Y8 [/ ~
;;
这个过程实际上是给双方作出评价的过程9 t  w  u9 A$ S- g; W* l, b; `+ Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
& i5 {' c+ C9 |& k0 Z0 \$ t9 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价, n7 {! C/ ~# s4 W) q  r
set trade-record-current lput(timer) trade-record-current, F2 O7 H, X4 K* Y! L$ e5 h
;;
评价时间( \* j! G/ o/ C  o0 k
ask myself [' U6 E' j* d: q& G
update-local-reputation
( [% C. h" @& L. n+ f& u! A1 ~5 h; aset trade-record-current lput([local-reputation] of myself) trade-record-current
! q: ^# j; b6 y0 ^4 i( i]
9 Q  b9 m% \5 _1 T4 a6 j6 h& Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- x. B" G, L9 i' `;;
将此次交易的记录加入到trade-record-one
3 u2 t. g7 A/ ]" ^set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)7 G0 J3 J; J0 }( F8 A" P% F
let note (item 2 trade-record-current )0 Q! F: ?$ D' U0 U
set trade-record-current: Q1 ?7 g# b3 b; O- T8 w
(replace-item 2 trade-record-current (item 3 trade-record-current))

' c% u1 E; M+ c0 O; b2 s0 Uset trade-record-current
, b2 u; B7 E: q9 i: U(replace-item 3 trade-record-current note)
: `7 V+ \/ M1 H" Q2 T, J
6 t& {2 o% P) G( a4 x+ s7 V2 a, N

/ X* _' i- |# [; S3 \ask customer [  Z" ]3 J1 V9 z4 J! [
update-local-reputation
9 r0 L4 f$ P% p3 O) V4 u% z, d3 f) pset trade-record-current
& |! A$ f  l& w1 U  K(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. S: @7 f; b3 ]$ Y]
% F# }" N5 X$ B
4 a7 A3 ?. y- l+ v6 Y

- {( l" ]! K/ R" J) g+ n2 F  mset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 |9 Z# a" f" ?; T4 j$ a
4 a5 b' }: E, @" |/ }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, O7 i- u/ l  I0 _;;
将此次交易的记录加入到customertrade-record-all
& `3 r1 [% Z5 n) l/ O" Zend
( a; N: X( [( I; A* L! L' X, z, [: m. {, T5 e
to update-local-reputation( I$ d5 M. \- f0 H2 ?
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 s: |4 _4 k- T+ i* w+ ]
7 Q' y) v  c3 T. b* S: O
8 ^0 {& k/ Y: n! }. s) W;;if [trade-record-one-len] of myself > 3
3 c# F2 T& u" N4 u
update-neighbor-total
! X7 E. j% S9 g;;
更新邻居节点的数目,在此进行
1 a$ F' M: d2 Z+ v8 T5 O4 Zlet i 3
5 g3 X. y! L7 g* B! B( D* }let sum-time 0
, k* L; }+ e0 H1 L( Gwhile[i < [trade-record-one-len] of myself]7 k. F6 I2 j7 S1 p. x
[7 e; A" w  I5 J/ f, ~$ P! o- _5 y! R
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )5 G( F. h2 F# M4 Z2 b
set i9 T1 V: P" E) j
( i + 1)

8 S4 z5 j  b0 S! |; |: ^* x]# h0 x8 h! ?6 h, B8 G6 f
let j 3
9 u( B9 o% S: x- p# [let sum-money 0% o# [" G+ U7 y4 }6 I
while[j < [trade-record-one-len] of myself]
' N9 t& o. e" z' i4 @% h[# ?$ `9 M* H0 ?" t3 e, h" f
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)
( ^$ w# U4 X: N, G+ L' C; sset j9 I! U- Y: C$ V' c0 G
( j + 1)
; \) ]8 Z5 g5 V3 q
]
+ {# h6 @% P+ g- D* _. n4 Y% ilet k 3
; l" R& g/ \% K/ e6 Ulet power 0
5 R; y+ P5 n7 a" A% _: Z: z+ ilet local 0
$ b$ @  K4 h- o$ }: [while [k <[trade-record-one-len] of myself]
8 I6 ^6 E  G% B, ]4 B+ v7 p5 g[+ `: D4 S! q7 M; {( j* R0 ]) \$ p8 L
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) 2 U% Q0 h9 q1 y0 P7 x$ ]
set k (k + 1)  ?% [* [# p5 T) h; [
]1 F9 Q3 b9 G0 |
set [local-reputation] of myself (local)# `+ G, \- {5 M) T( ~- t' M
end
+ t, X/ ]4 ~& ~+ D2 E- F) l9 |+ k: m, {! r, G" t9 S; m& r- Q
to update-neighbor-total9 R; Y& `9 s7 s! P

5 n- u- j8 q6 q* wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' E& o9 w- U+ X; L

# j1 b' ~  ?2 o7 \$ q3 Q  [
: C% X* z! p& c' t; _# g" L6 t$ \
end
( G! N  l5 b# A) b6 n: t" L7 X, e9 r2 J  c, B$ L
to update-credibility-ijl
3 z+ G. F8 H8 B- M# p9 `/ o% C" j% g  C8 I. ~# c+ k7 {
;;
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。
$ p- H1 O* g$ K0 tlet l 0# C; X3 s, x+ ~  A# T4 k6 @
while[ l < people ], V4 @% Z+ }2 @; z( |9 {* k
;;
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/ F9 N, ~$ s+ ?" O. J! C$ F3 h/ a
[8 u2 G# U4 p/ T; Q7 r0 y6 [( i  o0 w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* y3 X3 ], T4 v  V( |$ Y
if (trade-record-one-j-l-len > 3)
4 I8 j8 u9 W7 ~- q4 ^! p5 _; P[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
2 J9 A# `" a2 |) M. Xlet i 36 X# c: _8 Z& i
let sum-time 0& \. ]- E2 E9 A
while[i < trade-record-one-len]: ?- [+ z0 p- @  U, z
[) s$ ~( d) o4 H- O- E# U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 C, Z' [7 N; c7 L4 b9 \3 q
set i7 H' ~  A8 n& Z5 a" x! Y
( i + 1)

. x) W, S; T2 t& y4 N1 }]3 d" J: D% ]1 C9 s* e/ ?
let credibility-i-j-l 0
# @2 A& e" A" K8 f: F;;i
评价(jjl的评价)  h: G& l) U7 K8 \
let j 3
4 u, Q, B% i6 u5 qlet k 47 S! R/ e9 p: B! Q# D4 m
while[j < trade-record-one-len]. {& R6 h1 O$ i2 D& k- [- B. E
[. |; @$ T* f- V: _9 q5 |
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
% |4 o) p5 m- W" Rset 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)2 k# b. l7 R9 ^( p% D6 `9 c
set j* }% S& _0 ?9 H" K# ]8 l. ?5 n
( j + 1)

" t" a9 {, Q3 A0 c5 ^0 u- e) L+ ~]
  ?# {# I6 ^( q4 r/ Iset [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 )). A( J3 q8 U6 m! b# t3 o
, ^5 ?8 \7 v' t5 w$ J

* U8 {2 {1 k: P; V# L+ x. b6 c6 elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# x! B# ^8 O( [6 A& V6 E' a5 D;;
及时更新il的评价质量的评价1 Q6 d* |0 g* b- l( f
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* R. U; Z* J& V6 Z( {; V
set l (l + 1)" p% }. }2 C$ a. @% z: x0 S1 s
]& D3 ]7 s; c& p3 J5 R4 \2 S
end
; k- i! c+ q' ~$ c* }" ?; X3 F! A
1 _* _! m" x5 L* K; N# zto update-credibility-list2 J+ u' w3 @3 Q7 H& r
let i 0
+ ~; q# p0 W% b& Swhile[i < people]# z3 W5 [- l% f' B- E
[8 Y/ _$ E3 K' ~4 f0 p" Y' w
let j 0
0 f" `5 Y8 J/ O/ U. a" wlet note 0$ B6 V2 Z8 f4 M3 m4 M+ s3 a
let k 0- o* x) F( b& g4 w0 X6 l9 s/ `
;;
计作出过评价的邻居节点的数目
% l# m2 {: l4 g% F8 t, a% kwhile[j < people]+ L- Y& ?8 q: z7 t
[
3 P: y# G# Y/ aif (item j( [credibility] of turtle (i + 1)) != -1)2 N% j  P8 k1 h" R6 n5 P
;;
判断是否给本turtle的评价质量做出过评价的节点
; s& l' a" N7 t2 V) B% L  J( y[set note (note + item j ([credibility]of turtle (i + 1)))
/ A. _; k3 f" W8 ^- F;;*(exp (-(people - 2)))/(people - 2))]
: s$ {8 C/ x+ |. a' o- D
set k (k + 1)! ]1 E; |) K! V# m  h: u2 I! t& Z
]7 u) V" V1 K" i( N0 A
set j (j + 1)* y6 W3 W; c; X
]
4 B9 l3 i% g, B) ^; U" Aset note (note *(exp (- (1 / k)))/ k)
. ~7 C3 E- {4 g$ ^9 V. `set credibility-list (replace-item i credibility-list note): E/ W) Q; U+ w
set i (i + 1)6 P/ R+ v$ b5 m, c! V
]
$ C1 p* Y. b% @  _6 Y% A8 u/ Cend/ n3 S/ w  d- G$ |9 Q2 m& E: V

8 X) Y6 X$ I& ito update-global-reputation-list6 h8 q4 d% x2 T  h( G. W+ F% n7 p
let j 0
% Q1 g7 f% g; }5 Cwhile[j < people]
, A3 }4 {: Z) _[
% r# G7 a- P6 H7 {- i' `5 Plet new 0
5 G( d# C% Z* ]7 W8 S) C! |; w;;
暂存新的一个全局声誉% A, A1 M& i/ X: O, W
let i 0
9 a4 u" n' C" G5 Jlet sum-money 0/ N7 B. q  e+ z1 l! y5 \
let credibility-money 0  L( B# r% H, c3 m' x4 F* `6 [
while [i < people]. B1 }- V% V+ e% F+ t5 S+ k! @
[
5 p! i- {/ d' Q' x7 Oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 v. R$ S9 Z  K! `; Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# Z+ j' [: I( ^( I5 h
set i (i + 1)
  P% T4 z( g$ M1 x]
3 }$ r* S* y: O% S6 |let k 0- E+ Q. X0 w$ y% V# v2 O
let new1 0* x5 X4 I. |! \; f% J8 ]2 R
while [k < people]
& X9 J; \. F7 [[" _8 E' [2 `5 _2 U
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)
6 |+ B6 \% j9 J( X2 F3 t+ Cset k (k + 1)
6 b8 ]4 n# @, E& x7 d+ Z]
; a% \, T8 n4 P  w. ]' a: Nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) X3 c" }! J' C- E; A1 Nset global-reputation-list (replace-item j global-reputation-list new)  S1 o2 K" d0 O. v/ i) H4 b
set j (j + 1)
4 U% E" A' o! Q]5 A0 L8 a3 ^0 Q2 N* o! D& z: P
end
9 y, X5 f0 T9 k: f% O+ D4 k# m/ m/ U8 H, g* j  M" r

9 [; V4 A- T/ w- A0 K# P7 s0 N* r. n, h, M
to get-color+ Y9 n$ e) V8 ~! _6 e4 e, R
6 r0 ]% `% M: o8 Z
set color blue

( B; s/ m% Y  Mend
  g8 P  P, r/ D' x8 v2 ]5 F
  a- G! M- b* ^to poll-class
. H# i( S4 p, |  B  r# r# B3 ^end2 A( O6 t* y. o4 h, ]3 H

; U. c: k' j6 rto setup-plot10 A  Z, V1 K+ ?, q  r

9 |9 h+ m0 ?% Bset-current-plot "Trends-of-Local-reputation"
+ r+ \! w9 `) i/ h

  ]% \* y/ q3 a5 C0 y  I! wset-plot-x-range 0 xmax
6 R6 U6 Q' c" r8 Z* r7 {

4 ^8 E& X2 f1 R6 I% N/ g+ yset-plot-y-range 0.0 ymax
5 _) _+ x6 Y/ Z3 r$ Y# L/ M$ \
end
& |" O) A! F1 m8 Y( _
% Z0 Y9 d- H0 X7 V& _to setup-plot2) I5 I3 K* D  _3 s( W' [

) b1 p( H5 l+ t! H+ Eset-current-plot "Trends-of-global-reputation"

) d8 ^: {" j0 ~( o% ]$ N8 J7 L+ [
set-plot-x-range 0 xmax

1 K* t$ ^) }6 p0 F4 _7 d
  R5 }5 ^& w7 f: C% A7 S4 Dset-plot-y-range 0.0 ymax
6 C6 g( {5 m* }) M0 q2 d+ R# P8 I
end
% S3 J$ r! M. t. F, O/ y$ P5 o. {" d9 F( d5 b. c& U
to setup-plot32 ], ~9 o9 H6 G) f- \, i
/ V4 @. q- P; b! n
set-current-plot "Trends-of-credibility"
7 L  ?8 ~" v: \4 J2 p
* c* I8 d" z" |5 O$ h' `
set-plot-x-range 0 xmax

8 @" a! j2 U. h" I, J; _3 @5 V" Q. E" \1 }( x. }  p
set-plot-y-range 0.0 ymax
7 q* d* m, |* h: N
end3 b6 {2 @6 ~, C# o4 e

1 g% p! N% @& G; ~: Xto do-plots
5 W% _, u( a2 g3 x0 Rset-current-plot "Trends-of-Local-reputation"
; ^1 G# ?  Q2 a" Lset-current-plot-pen "Honest service"
9 ?8 q( h. m; aend5 N, M! O$ a7 O. m2 t8 j4 m
% T7 b! |* ^* r5 H' f* H
[ 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 v/ m8 u5 I* ~" ?3 f
" X. r* y& A$ g( f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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