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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:
3 k3 Z# l) R% T3 M+ E9 lto do-business $ b$ F3 u  h; \' @
rt random 3600 _6 v1 k7 y) o6 e
fd 1
9 K" [4 ~& p- r% c% Z& K7 W. j ifelse(other turtles-here != nobody)[
# D5 a. @! w5 m, Q4 J* f3 y; b   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.5 C8 ~+ x; |, K- t3 k# Q& E5 `
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 c* X/ v" g8 w6 Q' t
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ e% ~& a! q/ R. z) @   set [trade-record-one-len] of self length [trade-record-one] of self% K0 g9 y; }' p& u9 `
   set trade-record-current( list (timer) (random money-upper-limit))
% R# |5 r: D5 t; n5 d. C- P0 w; f" [! [! w6 O
问题的提示如下:
% w; ]5 i& m; d0 N- o
. d4 y! i4 H/ cerror while turtle 50 running OF in procedure DO-BUSINESS* f8 }* ?" g) Y) _2 ~- g+ q
  called by procedure GO8 `+ S- M, i' v
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& b( w& A) L) A1 t# M6 B% r7 n
(halted running of go), b5 g9 T0 V3 P: j* r& j0 v/ Z# c% P

  M, C) X, t2 C- J: m8 d* @* j; c9 d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~~
) \/ o; ?' V7 D4 l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
2 V1 [% a; ~6 R1 D3 R' lglobals[& f' Z- ~  \0 `% d5 h: y
xmax3 d: o4 c& _! s# g2 N
ymax
/ ]5 h) P, F; B- E7 R  Lglobal-reputation-list
. d4 y, u5 C3 ^" l
! j$ s$ V0 M, [! {0 [; Q$ c; P;;
每一个turtle的全局声誉都存在此LIST
5 g0 L; x+ K. B/ h( Kcredibility-list
1 R- S  g( `& U;;
每一个turtle的评价可信度5 b# O- n6 b* Q2 d2 T+ ?" |
honest-service
% l" ?# X& H( Z/ {1 _# dunhonest-service: K! z( d6 M4 S! ~0 H& l' w
oscillation, z7 K( u) N, w# q  r
rand-dynamic
5 P' t" B8 k" ~( E]
2 b7 N$ V! Q2 y: F+ n* N& S- R# H* s( q* t9 H
turtles-own[+ L" c. W# r% |) e9 h* A6 [' h$ _
trade-record-all
$ l7 w" `0 d+ E9 B;;a list of lists,
trade-record-one组成6 i4 q- T: x- D& N; }7 |0 v0 M+ X7 n
trade-record-one% j. E) F& N2 c% q# k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
/ ]! B" y$ s2 B" v% O& G& L
/ i! z6 g  T) N;;[
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]]4 H( [8 p9 I+ m( |4 W2 ?7 a9 _& W
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]
$ t2 b- n1 k9 k8 rcredibility-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
$ T: t5 w9 d. U' T! i# {2 u9 zneighbor-total
+ u7 \& J9 |% O/ ]1 B& u) p/ P;;
记录该turtle的邻居节点的数目8 T  U7 A: A& C3 \
trade-time* k" [4 F! ]6 t' t, ]
;;
当前发生交易的turtle的交易时间) D2 Y# \8 N, X# ~, F
appraise-give1 O6 @: D3 ]: Y/ E% q7 ?3 p$ ^
;;
当前发生交易时给出的评价# L# F, @, X1 r  j
appraise-receive/ L3 Q2 @% V) @3 m& V( Q+ D
;;
当前发生交易时收到的评价
  c/ @4 n4 W* d' z% Z8 \; Pappraise-time
$ I) \5 F1 a8 r+ p" P;;
当前发生交易时的评价时间2 s( w9 ^. S* G- _# R. J* t  n) G# W
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
- x3 o; O0 O* s' W! @8 Ntrade-times-total
+ }" K5 J, \8 q4 ?8 r, Y  A;;
与当前turtle的交易总次数! e) J, z* u/ s1 L
trade-money-total
. k1 ?* ^' @% o1 r( T+ B;;
与当前turtle的交易总金额2 \7 l  B0 s& z
local-reputation5 T1 n) k. f. q
global-reputation
( R1 n* P& M, k6 ], I& ccredibility9 h8 E* q, N( m
;;
评价可信度,每次交易后都需要更新
. X) x9 ~! A7 Bcredibility-all
. u) Q( [8 Y8 v8 C7 G/ o& W* Z( t' P;;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/ M" T. ~! q* V7 K0 A& O

8 L- e) J7 `( K* `0 C;;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0.54 {- C" M8 v$ ], a
credibility-one5 S" e' A8 n) B- E* f
;;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
4 A! }- Q4 o, y* g% rglobal-proportion
* O+ n5 N5 Y0 N" xcustomer
8 d, F; o" m7 C, n' {. Zcustomer-no
  W  @6 O' x. U+ }- q7 |$ ^0 |. etrust-ok1 c* P+ N5 x6 h: B
trade-record-one-len;;trade-record-one的长度
: {  A& W, `* N8 j]8 |! y6 B  V7 o2 G6 d; ?) |

1 h* m4 z- g5 \/ v;;setup procedure! r* `$ B) d- @1 g- y* a

' V$ `% M/ F  a& n# L8 D6 zto setup; X+ e& `/ [$ C6 g

% w/ I' @" I1 A6 vca

# v4 K0 x9 n6 F! m8 V% X  L" E' z$ I- T4 T
initialize-settings

1 s4 o5 ?/ X$ @1 z' n; o; F
3 [+ G: Y0 M# f  [- O8 Lcrt people [setup-turtles]
; E  I& p% V; z4 e4 j" [0 d5 V
0 K& e, L7 f* R
reset-timer
; z, N# b& P6 C; _
( l' ~9 |, ]5 J5 F1 p
poll-class
+ G, }+ _9 S8 q8 E0 Q
  f) V/ j; v. [
setup-plots
+ N/ V6 y! A: O& }" D; E) J- b- M2 y

4 M4 V+ [! P) S3 U& Tdo-plots
4 q' R9 A8 m& }# [" q
end
* ?5 U: s- Y; B* t4 K9 C1 |- V- ]  D+ f
to initialize-settings+ T+ N4 ?% B& L/ {. V
) T! S. g  J8 i! Z+ m8 H+ L, _
set global-reputation-list []

6 I* V+ Y- H7 M, D, {# e% |- W2 t/ G, c; m/ O% h. s
set credibility-list n-values people [0.5]
3 l' \9 w0 Q3 o+ p2 |5 j

/ k3 T: l- d. n" F" W/ ?5 |$ L, iset honest-service 0
: A$ ^* q( M+ Q. e0 G
4 B) R/ S- z! O6 R1 K. F
set unhonest-service 0
' f. c  U  s/ J& X
1 O/ K: K# c: ~) T: `# V2 n4 {
set oscillation 0

$ c' S% {6 W! S% J+ x$ |5 a7 g. f
set rand-dynamic 0
7 x1 ]6 p* _3 w# ~
end
0 M3 B. t% u5 k% }  H" R3 O. a
7 Q; [) w; Y7 }/ z0 Mto setup-turtles
0 w1 d- @. D1 U* k# bset shape "person"+ `% }5 {6 a$ g8 g
setxy random-xcor random-ycor' `, D/ P' ]: n6 I& c4 ]
set trade-record-one []
. l! [, u# Y) Z% H6 W

( D0 X/ h. l9 t# Q* Wset trade-record-all n-values people [(list (? + 1) 0 0)] 9 J) H' w, b6 D$ R( o! Q

5 n8 j! L- c3 ^' o& eset trade-record-current []% x' `, L0 d: ]1 K* Q
set credibility-receive []4 j' f- M# g8 K3 Y
set local-reputation 0.57 t( S7 f2 c6 a5 v  D) l
set neighbor-total 0
, I" Y; O; \: U  ^( t; S5 A1 Yset trade-times-total 0
. `  \3 G& ]) T# h9 J* ?' yset trade-money-total 0
0 C$ ?$ {5 \% f! X2 T( w& U* p% P% Rset customer nobody: x" m. h) c) O  \
set credibility-all n-values people [creat-credibility]6 y0 d' M2 j# x
set credibility n-values people [-1]
: T2 B  ?: x3 ]; [* p. l4 o3 \7 yget-color" w9 {5 y' [) R" K6 {$ l4 A
+ z3 d/ `/ H8 F: D2 n) y# E8 i
end
2 H9 \4 [, }6 ^. X
' i$ e8 {  c# j" Z* nto-report creat-credibility
' ?$ B$ Q5 z2 W6 ]3 Treport n-values people [0.5]
" q# |: ?+ c* e2 U$ I# Z1 m/ tend0 v- w  m7 E' K

- M; K! O$ d9 j; Q7 Oto setup-plots
  W3 k1 B# ~; B' J
1 b8 V0 s6 F+ z* ^set xmax 30
$ V2 a  T, `. N8 G
* D7 r5 H7 {, t$ t) P% y4 f
set ymax 1.0

. J3 _  z1 C2 o- U+ [
/ z8 t6 L5 I, W/ `9 |: K+ dclear-all-plots
9 g" K- m1 W- K* r3 {& F
# h+ l; T( L  i: U& W; x
setup-plot1
1 w+ V" G- [# O& o3 ?/ U6 S

8 |6 _; @- r* ]# v" rsetup-plot2
& X1 q3 |/ Y& Z

3 Q6 |/ l# v0 |& Ssetup-plot3

. S, t6 o2 J. S* G" P  Oend2 y3 c, U! f0 D3 Y3 i* n4 p
# ?/ x1 s# |7 U! q
;;run time procedures# F/ |& a( F, i9 r6 U% R
: ^6 Q0 o4 }* Q4 z) f/ t: f
to go
: |5 g! y- T3 z0 w& v5 n" ~( ?3 k6 ^: V
ask turtles [do-business]

+ ?; n$ z+ ]' z/ |# O" \) Cend
/ A& P8 R  ]- y  N' y" k2 X* N9 `. G3 E6 S
to do-business
8 l. t. _7 x* B2 y( ~' Z
! C. J5 S$ s: H

% \: k# C' V. c, `% l4 Q9 _rt random 360
: B: o/ y2 J+ P

: ?3 ^, }$ _0 @7 w3 b6 qfd 1
- M( B8 p  e3 Y

9 {; r2 [3 O7 s0 gifelse(other turtles-here != nobody)[

, i8 ~9 f8 X# f3 M' C3 j/ I' f) w! C2 B9 T
set customer one-of other turtles-here

8 b* D0 k( D0 C2 O( H$ H8 ?
  ^$ x7 H/ j# L0 V! f( a8 b;; set [customer] of customer myself
6 c+ f5 t/ T7 @6 p9 B  h: O

- X: E( V, g/ i- u. [0 h0 p- gset [trade-record-one] of self item (([who] of customer) - 1)
- ?' ~! p6 z3 }0 C3 i+ I2 }4 I[trade-record-all]of self
1 ^( N8 X. w  D& K! G+ @9 m4 v;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* ~% Q5 y$ C0 u, ]$ ~5 C% E1 g7 z7 V; I9 ~+ H+ Q: B: O
set [trade-record-one] of customer item (([who] of self) - 1)
0 n7 [' K( h! |5 D1 T  r- C[trade-record-all]of customer

' X4 k9 E& `; Y4 x2 }! B! g: h) Z* s
3 l! k" M4 E. ~set [trade-record-one-len] of self length [trade-record-one] of self
1 D: E5 F$ Z4 b* d( M& w
! v! p  T( Q( i+ _  V; J( X
set trade-record-current( list (timer) (random money-upper-limit))

8 p  a3 f' Z- T. f( k$ H
0 j/ o& \1 \, F' a5 j+ ~ask self [do-trust]1 o9 ]% s/ Q8 D* s  \" D5 o
;;
先求ij的信任度
( }7 y$ {$ ^/ v5 Z( C' [' E: @  m# |/ H9 H( ], O3 M# v
if ([trust-ok] of self)
: G9 v8 T4 r0 p! _! r( n9 K. w;;
根据ij的信任度来决定是否与j进行交易[- b- s& A$ N0 F7 Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 H3 a% ~1 }/ D3 M
9 f- R9 w/ N1 z% [* @# m6 ?' r[

" m+ j9 B4 w4 h; M) t4 G
/ t" O- b/ V' B3 z+ Ydo-trade

1 Z5 e* j- g4 K! U) E# u( `$ y3 x: V  K& J2 X& T/ I' k6 ?3 q: [0 q
update-credibility-ijl
( ^$ {$ V5 h# B

$ c5 ^2 i! x& M4 _4 j) cupdate-credibility-list
( v4 D' j* q# g2 I# g

+ r  J& q0 D2 M2 w5 [7 @
6 n6 |) _9 o0 X* I& O4 r. q' p9 V% lupdate-global-reputation-list
: c2 O  M* V. R& z
  V# L1 \' b, H! c2 j# f8 o4 ~
poll-class

. B" W) o9 x" f: {* E) H- G2 |; \6 Q7 f. t
get-color
$ x) X1 X0 ~7 L& ?
1 X& z6 o- n' G9 B- N0 Z5 T3 Y- q
]]" E0 M+ A( }  C& a
3 Y) q+ s) C: w: c  M* Q9 U, M
;;
如果所得的信任度满足条件,则进行交易' a7 S: Q$ v: {: Z/ z

8 L; a; \' m6 k0 ]$ t[

' e. T& g3 Y$ E9 _7 D+ B$ @$ |& N7 n
rt random 360

" O( P& a( d9 V% m9 o) I0 H& i1 X( J" E1 H/ z& w
fd 1

9 Y8 a5 g; g  L  o0 l, p+ `" H/ \* i8 e! p  I: {0 V/ c
]
  k; z, ^+ c- P6 Z
1 e9 ~1 m* ^( W& A
end

8 ~  R6 D  u3 W3 i/ @- T
( @/ s4 m  Q8 I/ ~$ Vto do-trust # |$ r! H4 \* A/ C5 L+ G
set trust-ok False
- x" j$ b/ X# N3 u
! M$ T* s3 G, r/ _
; ?; r! a9 Z2 z; f
let max-trade-times 0. g* w& F1 @4 P# T) m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. p1 E& s6 P8 X4 E. [% Y
let max-trade-money 0
+ ~1 x! F( x8 o4 Z) H- Iforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
1 L- q8 |8 z, P0 B7 y/ Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 J; Z2 o# l; f, v. Z

: m- J2 F' V% P. O- |$ \% b: n
+ ?! q% ]2 g* j+ V# G$ i
get-global-proportion
' c" b2 J! a: _1 ulet trust-value6 \. A& y: O' y* n5 d$ X
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)
0 n* u  i' \/ N. U2 I6 |  J
if(trust-value > trade-trust-value)1 x7 S( i& I& c, P8 |, ^
[set trust-ok true]- Y& G, C: O* t
end
5 Q  C0 r; Y+ Z( N, V$ U- D' a0 [  f7 g: P4 j( ]8 Z# w
to get-global-proportion
% I6 g. D+ A2 j* {! v- \ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)4 I1 t/ u8 C* Y
[set global-proportion 0]$ z+ y+ C0 I" b% O- W
[let i 01 {0 C8 U# b% _. @* s  T! n
let sum-money 0
' a: m7 }  F& R- K9 ^4 z9 Cwhile[ i < people]" _" M0 [6 e. O2 b0 H! b* t$ V
[
- u% `% H6 Y3 A3 O* L2 R3 Sif( length (item i9 I( T. E$ y6 H( I1 ?( t* U2 y
[trade-record-all] of customer) > 3 )

5 @8 w$ }& c0 Y* Q[
" s; i7 c) [; f" Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- {+ G$ W& l# l6 D% ?4 P. l]7 I! X% s- \+ [
]: P1 l8 N" ~6 i1 c' x
let j 03 M5 ^4 Q" f! F. r+ ]" P
let note 0
3 N/ @5 F' M- B6 a& S5 n* Uwhile[ j < people]
( U: x; Q9 Y, J1 d[
- f9 ?! x6 G% v- M1 Rif( length (item i
/ ^/ J' M! n$ T* C[trade-record-all] of customer) > 3 )
' E- X6 D& W& j
[, p9 j' a2 ?1 \- q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): }1 U* v9 D: a1 H! Q% C8 O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' R( K' t& a! K5 T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" `5 I; j& B. E. Q7 e]' s) N' M6 i3 d, u% k) }0 {% N0 r; `
]
% [0 F( J1 G9 T+ M' M7 v- w6 ~set global-proportion note' v4 M, J5 E5 t; B  \- G, D' P* H' [
]
2 J9 u2 _8 N. D7 ]# [$ d6 H! Jend
% A  N6 L# B) N* ~% q
; a* I7 [' ^& G5 gto do-trade
2 M* W" f0 m/ {;;
这个过程实际上是给双方作出评价的过程1 X/ p+ ?) D. v( @. k. ^8 ^5 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 Y" l1 n) S7 K' e/ _2 u+ Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价; M) `4 u8 `: [* P1 q% F! z6 i+ ]
set trade-record-current lput(timer) trade-record-current
2 k3 c$ N% k# W) ~" U;;
评价时间2 ?+ k2 Q0 y' Z7 A
ask myself [* |( W$ I' b. a
update-local-reputation' G+ u  |- ~2 x" n6 j; [+ M
set trade-record-current lput([local-reputation] of myself) trade-record-current& L7 M7 ^  D/ A5 L9 T3 a* }
]
4 W# L$ S4 U' L* G' z, {set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 j. A  ?& b, t;;
将此次交易的记录加入到trade-record-one6 u6 i% p, N  Y7 s: p8 a' c
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* D; K$ r9 h/ _0 z- o! n" p; U
let note (item 2 trade-record-current )$ q7 j8 g. `* U9 U
set trade-record-current$ {7 V; n. {, i* U1 M# W; }8 }
(replace-item 2 trade-record-current (item 3 trade-record-current))
; |, F: ]3 x+ T' c. x4 y, R
set trade-record-current" M/ t9 H$ _/ f8 o
(replace-item 3 trade-record-current note)
; c8 d; w: X& p4 l% U; {' w. ^; F4 [9 H; @4 [

* G& l2 T3 z2 d0 W/ h, R% Pask customer [
* l, H. Z  v, R, }! H; B7 bupdate-local-reputation/ f, N. e$ m: C% S. D
set trade-record-current
6 k2 p0 I2 a. W% k  [! G) g0 }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 d0 b7 U. n4 D% f! t* D]. q+ b' t: G8 m" O

2 Y+ h1 ]' G6 S( I

9 i7 {: H4 Y6 A% h9 N& \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! J/ n7 x, [& |) r8 F: M. I. C! m
& ?' d. o8 x( {! Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 C) W$ S% Z3 Z! n1 b* q$ K8 R
;;
将此次交易的记录加入到customertrade-record-all
. |- c6 ~( \& z' b3 Jend/ K' S: m' M4 |- R$ ~4 k9 x/ c. e6 T4 R& U
& G1 e$ N1 @  ^" x7 p
to update-local-reputation% N- T. u3 _$ z* V
set [trade-record-one-len] of myself length [trade-record-one] of myself5 m& f1 M& _6 O! A* e$ A  j  S3 S
9 o4 V+ N: B% u; R

" r) a2 J6 Z' ^; ^;;if [trade-record-one-len] of myself > 3

* s- U% t3 G; Q4 U' }' ]2 Jupdate-neighbor-total. R/ C$ r( ^8 [: q
;;
更新邻居节点的数目,在此进行
+ O2 {' d0 [; f+ Jlet i 3
4 }0 n; q2 B- J- X  |4 x( glet sum-time 0
1 C" p3 W/ c+ m# h) Hwhile[i < [trade-record-one-len] of myself]
' z0 N0 g8 w- [[- w# F5 n1 f, H/ F
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 O+ z7 k5 y* C$ o( n5 g
set i
+ A5 n+ }$ P" B% W% `( i + 1)

, W* X3 V' H/ @0 b# \; x$ N) _]( X7 w7 C! b8 H5 s
let j 3
. C4 P9 }' s7 e- `let sum-money 0
: H% B/ {* s, P& e  Fwhile[j < [trade-record-one-len] of myself]
7 A1 ]8 {! O+ a" W2 P' R[
  S% h3 i. g; K' \* A( |: ?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)8 h% h) ?. N# W. p. K! _
set j
+ u$ w9 H* q3 \) `( j + 1)

/ s' E1 }. h  b) |9 B1 X0 }]0 r. ^  g( g: p2 v& U! V
let k 3# j# p9 e5 U$ x! P
let power 0
# `1 ^6 q: G! V/ A$ s9 X% ^) U# Wlet local 0
  ^# K. x6 @7 v& K; ?while [k <[trade-record-one-len] of myself]
1 W% {* u: t0 R[
/ J1 J4 |6 @2 p  r- D/ yset 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 x" A! G; h0 o3 F5 m" e) xset k (k + 1)
7 s2 V4 j# R0 K" C* [  I]+ }3 {6 p$ v% J" M  X$ t
set [local-reputation] of myself (local); B) b% l5 b' q6 b# B3 {) W
end
* i" [. P4 [. q+ X, M3 _* E" A/ D, C7 C* M4 W8 o0 K% F8 X8 _2 `- o/ H5 D2 c
to update-neighbor-total
5 ?" ^+ L1 v  _& P- e6 D" [2 D* z7 \! P: w) n5 v, q) s- B4 M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 ~" w; J) I" S* O1 h) r

6 D: B* ?# ?) W! Y
3 Z  y) R7 R  T3 b# n3 r1 G
end5 B5 q- m' t# x2 H$ Y, y
0 o3 P- r2 `5 t1 L, u9 N
to update-credibility-ijl
% ]9 g2 Z0 X; I; i! i& ^% R) s0 k0 O8 C6 h
;;
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) t- x; z: M6 n' v4 Ilet l 0  n9 Z, X0 w3 h9 ~; a, R  L
while[ l < people ]
  ~) D$ p/ A# b. 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5 R4 t6 w, s. G/ O
[
. u) D& y% Q* U: Z- Hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! {9 _2 S8 J, [) Y4 Vif (trade-record-one-j-l-len > 3)1 h# Z0 F8 ^4 x3 _3 `
[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-one0 N/ F2 f  {9 `( u
let i 31 A9 Q' {0 e1 N9 F: X/ E% D: K
let sum-time 04 v/ z, d+ H) `, S' a) _) n
while[i < trade-record-one-len]1 ]/ Y( D6 u& ^- W) Y: g
[
6 l7 {5 m4 a$ v3 w6 |9 `set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ); w& t) e! z4 e$ e  U* d7 }
set i
& X+ D9 A9 R4 e( E  [) {5 B5 F( i + 1)

. S0 J2 ]+ m) h) d$ L* B]
0 @7 F* ~% q2 ~let credibility-i-j-l 0- B/ \' s9 R2 d8 v% D! A# M; i
;;i
评价(jjl的评价)& x9 [9 X' P7 u9 p  L, Z5 B7 P
let j 3
, h) q% J  q4 U' I4 w4 V: i# }& I; z9 \let k 4
; k: a$ z- }5 L7 b5 O" A4 cwhile[j < trade-record-one-len]
8 i7 X5 [: x1 \& o1 L+ ][
$ O: T' Q9 Z& rwhile [((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& P0 F; I- q% C; t4 h/ d* U1 S7 T
set 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)/ L6 B9 ^& I6 d* R( E
set j( J4 P# g6 h& q( j
( j + 1)
! O/ O4 k' ]# X. j! o! S9 q
]
4 @$ P; T$ A3 g1 X$ Y1 Tset [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 ))
! Q- e1 z( t  Q, k
) @2 ~2 c5 g% X, Y: g

2 j* }; a0 \% F2 E' l2 ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* h( h2 N; R; z; V3 I
;;
及时更新il的评价质量的评价# ~  ]7 H9 d2 H$ q7 e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  \2 [8 p- u" T0 mset l (l + 1)
/ e0 u/ o. T. ?4 s0 _# d- x- _2 Q# W]
$ }" s: M6 @8 a$ v! I, ]. Nend  M, B5 P; I2 a* |5 Y- e

) S4 i" z+ g- v! wto update-credibility-list. K( s; v9 m' F4 R/ I% V% ^. f
let i 0  A/ l  Y8 u0 ~" O2 ~' O$ `
while[i < people]* H  P( H9 s) V0 {
[: {% V& r; }5 a- _* h: \7 h1 A
let j 0# F1 Y! |* ]8 C8 k9 \& k
let note 0
( N0 l$ E& o# R& v8 Nlet k 0
" r' X1 r# b4 \+ A  p7 z;;
计作出过评价的邻居节点的数目& v, X7 Q" O& U3 {3 j
while[j < people]
) I; Z: @# j. p2 w0 v8 E! S[* x+ ]% d8 f, v4 ]  F
if (item j( [credibility] of turtle (i + 1)) != -1)
& Z  v" f9 a9 L;;
判断是否给本turtle的评价质量做出过评价的节点
9 x, }, J5 e- N( `) `2 _[set note (note + item j ([credibility]of turtle (i + 1)))4 _$ o; Q/ e* P+ H1 u/ ^
;;*(exp (-(people - 2)))/(people - 2))]
1 t* y4 s$ C* V4 k3 t* z
set k (k + 1)+ t+ I* g+ x: m" ~* X/ P# T; f& f
]5 J# U6 l) S( ]9 W
set j (j + 1)
/ L0 ?: Y+ r( {& U! P* P7 D]4 w! O5 t1 u* w% U& ]$ P. r( E
set note (note *(exp (- (1 / k)))/ k)
; y( B$ v( U/ \7 C7 n/ F; q, `. Lset credibility-list (replace-item i credibility-list note)
% D" m4 m9 o7 l# Y( A6 jset i (i + 1). `, r3 ]0 s: P% U) {
]) T. `1 G  R* K- x# I
end
0 B6 K# x& Z/ W$ T  B3 c; v* B; v: K4 d- l
to update-global-reputation-list
# n. R( b' j; V' W. Ulet j 00 ], |) \5 f$ B0 [8 ~3 ^/ \
while[j < people]
/ w" l$ @4 o  A) u0 C. B/ \[; K; ~: ^) ]6 u& a6 W
let new 08 V* m0 t. ~6 L  ^1 w
;;
暂存新的一个全局声誉. m2 L+ F) N' b# K7 _/ ?
let i 09 z+ E/ J' U' v: ]3 }
let sum-money 0
! D0 a$ n7 I; g) A* ~/ U. hlet credibility-money 06 w, k: [- {, @+ a5 Y* C" ?
while [i < people], J6 M5 X8 B; R
[/ J- w9 B2 [2 A9 N2 R: P' G
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 {7 l  Y0 M8 Y  x& G. ]set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 @- o7 M2 g7 R: K  Q
set i (i + 1)
' ~# w* v8 [9 c2 F* h]8 z5 a6 b1 j$ m4 u5 m/ `+ `1 T
let k 0, D8 g- ?: G3 n& t+ I7 s5 Y
let new1 0
3 t2 V  i7 j/ o$ [" `: c' I0 O/ V7 Ywhile [k < people]' a$ R7 b  {8 ^7 D% K+ b0 g( B
[: N/ S) A) {% L! [- }3 _$ c& o# T
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)
' ^1 A) E) L( x: gset k (k + 1)" X( \2 F3 M" W, E' n1 t6 I
]
! X' I: {% v$ \& s3 j; Xset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 x% T( l2 L. Y! K. \set global-reputation-list (replace-item j global-reputation-list new)
1 A! e7 G$ S5 B, _& r0 a0 z& \/ Y+ v- xset j (j + 1)
: _9 d7 g! _) ?( z]) i6 e/ b2 Y0 `8 C' ^
end9 H: l) N  Q- }& S3 F5 Z
1 }  e& V6 ~* V+ r9 s' J& u8 h0 f8 A
$ z. l* w6 |- Z5 [

# Y3 `% W6 b1 |to get-color
# H! N% r6 k# g+ }3 m' K) q& a6 x. y& T$ r
set color blue
1 h% E( S! Z: P! L) N9 K
end
1 C( b% w% l6 l$ }* e6 n& V+ P- V& f$ r" o* H1 L
to poll-class
. ]+ D& d& y+ T) a, o/ j) S0 y  iend0 F( D: K* o6 ?
" ?, |& d3 A& T" c
to setup-plot18 t* q" m! k9 T
! P0 ^3 G8 s8 Z
set-current-plot "Trends-of-Local-reputation"
, ?( G! z/ V+ F- N3 s3 p& u

! v3 H. o/ A: m0 D+ Xset-plot-x-range 0 xmax

' M9 D% z6 v: g2 ?% D& n5 _
3 ?( X. U3 k7 ?) ]/ gset-plot-y-range 0.0 ymax

. }" L' {4 S0 _" Aend
) K1 i$ n9 ]5 S! h/ z) m  F; ~/ a6 H; n* i
to setup-plot2% t5 |& y4 ~0 J+ {$ D, B$ d
' ~* ~0 V% ?$ {; U  ?- i% b
set-current-plot "Trends-of-global-reputation"
0 {! G9 t, [' A

' x* ~4 y! _  r! L& _set-plot-x-range 0 xmax
5 _5 f7 p3 T+ i9 J5 E2 t

) O- G- g% H/ \# R( K4 ~set-plot-y-range 0.0 ymax

$ `. ~& x) D+ l& Y5 I  [end
$ ?, ]7 W( W' \+ s
" L8 b- L' M8 e( gto setup-plot3' q1 L" E$ o+ ~' O" w/ @  ^
& B; {: R* E7 R$ h' R
set-current-plot "Trends-of-credibility"

* Q" [" M5 m7 R/ r
6 A1 D1 @7 _- C: f! V6 o9 F0 m2 ?5 hset-plot-x-range 0 xmax
# M) j2 H+ F3 l3 q0 d5 A3 D4 V

* t9 }9 L1 T- mset-plot-y-range 0.0 ymax

) t4 @( d/ O- N( }end
2 `" R" o; s& X2 G$ S
0 R. A8 ~3 g7 u/ p: p, [* vto do-plots6 v$ K& M) m" S9 w# j: ?4 w( z) e
set-current-plot "Trends-of-Local-reputation"
) \0 K$ z8 c( v# I& E, rset-current-plot-pen "Honest service"
% X7 z) G! E) C0 Oend
3 t8 P% n4 @, D% D: Y  X
2 W  B# y  ~0 n/ Y" X5 e! q[ 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.
  v, z; R: [( u' }" g! k# ?3 E& V; B9 b" ]9 q
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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