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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:/ i) v3 I6 u1 o0 Y
to do-business 6 f. j8 g( F% O6 k- O# _' m* A
rt random 3603 c" Q! m+ @0 {# [# A" F2 O
fd 1
7 G8 X& ]. a2 C1 y ifelse(other turtles-here != nobody)[: X* F" H4 P: V! t/ f
   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.9 @  @: j) v( Z2 q& }/ z3 v
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 ^  R1 r$ l  s, q   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% y: p6 b; ?6 T6 B5 q, P
   set [trade-record-one-len] of self length [trade-record-one] of self' Z4 V" y" \& |' B" I$ M
   set trade-record-current( list (timer) (random money-upper-limit))
/ i$ G  y" Y; G8 t+ W) k/ j, C  k6 }* Y# U6 \) x4 f+ r
问题的提示如下:
. d  m$ {9 D* f7 L( _- t4 A2 R# ^8 C9 e) G( j1 [! c
error while turtle 50 running OF in procedure DO-BUSINESS' y. w' q5 s5 W% A) x! l/ @
  called by procedure GO& n/ p4 N- E; C% s4 Q. t& e! i
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! `( Z8 |) |9 t" _8 h
(halted running of go)1 {" }, o4 m; T1 y$ \
' b8 X, T; p* h7 S( Q. u$ F  A
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~~
1 D* c. k9 h' h另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教. I( _0 J" e# {+ K/ y1 i, S
globals[
3 S$ e/ k8 G- }! [3 @xmax$ m/ z1 M2 x- ^  h3 d, d
ymax5 \2 k- L7 h" m
global-reputation-list
- X& ~, Q7 X: m  G4 J
. `1 M- U: }$ D' Y;;
每一个turtle的全局声誉都存在此LIST5 ?, ]/ o. f9 f2 f- ^6 g
credibility-list3 p7 ]5 w3 N; _! x/ v
;;
每一个turtle的评价可信度
4 e* Y3 V& [% F5 {5 Ohonest-service
  V/ d/ c# s) v8 o3 y1 K! Yunhonest-service
6 a4 f1 h! O% ~# B; ]oscillation7 `* h* Q  E8 D+ G4 ^3 z
rand-dynamic& I8 F" @! L$ q9 s6 {+ C3 `
]
: M$ s" w3 i5 q% X) ?7 G3 K! v
* l$ `' M8 |% f  eturtles-own[
6 `+ J3 V  h( e4 @( M6 vtrade-record-all
  V/ }: t% n  K& a;;a list of lists,
trade-record-one组成1 d* p% o3 L; C; d2 S' N& v
trade-record-one
- R) n/ [0 d+ m1 ^- b* J;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录4 G3 z: Q3 N0 m2 J" z) @5 b6 ]9 J
. u5 S) G: l+ ^4 s) b
;;[
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]]2 N; K, b9 P" d$ t* X6 L9 s
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" j2 u# Q0 B( R( V: A! d+ w7 lcredibility-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
; ?- l, H7 k4 K8 Z8 g: \% Tneighbor-total8 K) \9 Y- B+ M: |1 P
;;
记录该turtle的邻居节点的数目
: N6 Z" k6 b5 S8 [trade-time
9 {9 l$ _+ U7 ?  U& B0 r8 Z' G* ~2 e;;
当前发生交易的turtle的交易时间* q8 H  S: ~6 L) f, V: V
appraise-give4 N) P4 o, A7 g
;;
当前发生交易时给出的评价7 M4 W. w9 j: J0 y
appraise-receive6 ~0 n- W8 ^. D! q# {
;;
当前发生交易时收到的评价' ~0 r- S" p- k1 M# |; d
appraise-time
$ W" ?* g/ v' g* k. F( E6 q! K4 q% K;;
当前发生交易时的评价时间0 f4 R7 i# p. P  W4 _$ \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 {" E. z/ h: ~% H, D9 ztrade-times-total
, {* G& W8 y/ p% q# b% T- m;;
与当前turtle的交易总次数
1 }* ^, V! N! ctrade-money-total9 D" E- U6 k/ Q3 M* G
;;
与当前turtle的交易总金额3 e6 L: z8 q) K( ]9 T
local-reputation
% ^* n# f, S, H" Mglobal-reputation6 U2 X: I% ~8 u
credibility
* _* Z  ^8 [+ C! J1 w+ A;;
评价可信度,每次交易后都需要更新1 e: _1 y0 I- Z- @( F# j" U3 S9 _
credibility-all% P3 I8 x) I- F* Z+ _+ o1 _  |
;;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6 Z7 {- p2 c4 q- P: m4 ^' F
! L& h# p' N& z0 R+ @$ V8 e5 r
;;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0.55 m5 e, p7 i+ p# j
credibility-one
# @/ V2 ~! R; C;;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
6 ?$ L" `! B; k% Rglobal-proportion8 P+ |* k6 L/ {* H' T
customer
, H8 d1 e' e- q: ^8 ]customer-no
! m2 u2 E) E% _+ Dtrust-ok
6 Q: U$ I6 d" ?2 L! `/ r* Z2 T. [trade-record-one-len;;trade-record-one的长度9 P. a3 o2 e) X* ~" X4 U( ~
]9 v) y2 Y% {# o. N- ]* |1 |: m
2 y  @7 [+ B: `* r5 i
;;setup procedure2 {2 v4 F$ z7 D% [3 [: m
% Q, t( W% J; _5 @" V9 {6 O7 U4 t
to setup
  U4 j  \5 t( n5 l* y' i6 A5 w" \7 R, S8 ]: \8 G3 W
ca

9 u  g5 U" m/ k2 `1 P; l  `6 t3 U' b+ C4 y
initialize-settings

  x9 g5 S! B  n* N1 W$ M+ z$ S
: C: u9 K8 X. p/ _$ e$ icrt people [setup-turtles]
+ J: y; }& f, A0 p
  {) d& J' E4 L2 u) X0 d# n
reset-timer

; K8 E: p' _9 ?$ F, M4 h* U& }; ?: F- F, q
poll-class

2 i  V- u1 F" g* b& q
  `% Y( @/ J( @8 xsetup-plots
1 M& H3 F  e+ e* F/ {( N& k
. J! G" Z6 f. k. h
do-plots

( ]7 _. w7 o" p! n0 bend
0 J# D' x; z6 D) o$ M2 ^  L' U- T0 n, V3 t/ E. i, L: L2 e1 Y
to initialize-settings
. M' W" o' J# Z8 b+ B( a  H4 y  t/ J1 P" a+ }* t
set global-reputation-list []
/ A% R6 z+ @/ u/ F: g, b

, \1 |% G" E0 X* Zset credibility-list n-values people [0.5]
( \6 a4 \& Z5 Q7 X3 R
' o, V: {/ I5 q+ z. l0 W$ V* f
set honest-service 0
* ]- ^0 h9 u, z* P
' |. J) Q- ]# E) {! |
set unhonest-service 0
; h* ]1 J# f$ \: D/ w8 y
: u) I- ~) W. u' |* Q' C. R
set oscillation 0
- y+ i) h- N! y$ I: f2 z
& {9 D3 l* ]# S- n2 V
set rand-dynamic 0

& ]/ @! g; \' }0 |: N+ J7 P, Y0 rend
% t; ^; {- B1 e) F8 x' J5 r- O
- `% J- B5 D5 k/ ?4 Wto setup-turtles   c9 G( j! U$ W
set shape "person") n8 L* w9 B/ s' K' r
setxy random-xcor random-ycor5 `; {0 i9 L" o0 U/ Y6 ?
set trade-record-one []
) Q1 U9 b& d* y/ \
6 l: s# U4 Q( ?  `7 X
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 c  m5 L  e8 Q8 W- z/ d
* a6 e' ]  h) f" r' d6 v
set trade-record-current []- S4 x( P4 G! w* E8 g' \( w
set credibility-receive []
6 V7 L& v* h  h* h% Tset local-reputation 0.5
) `+ C. b$ S" |2 X; f* yset neighbor-total 0
8 a' o, c- \/ Uset trade-times-total 0
: S, |. o( ~3 ]4 ?. S! Eset trade-money-total 02 m2 u9 k) O( a) U1 ]
set customer nobody% `" D9 }/ s1 B  t5 \9 n1 X
set credibility-all n-values people [creat-credibility]' D' f0 {: P* [' G4 |
set credibility n-values people [-1]
% a: U7 J. |. k9 Q; [6 I+ h% Oget-color( F+ G# Q, h* a  ?

* X" A! f1 H% l! hend2 A( Q7 c- [% f
# M9 }+ c& J; e6 G- p4 Z
to-report creat-credibility
3 R! S6 q" B$ f5 D8 U5 d5 L+ creport n-values people [0.5]
/ |  R! y  i% i- J: h1 @end; b' U3 m/ j- F" ?% U
, \# W' w! a2 ~% p" U' k+ @  }0 u
to setup-plots/ W7 L: R6 {) z: u" M3 h$ e& Y
5 }5 B# ~; F$ N4 X6 j4 R% D4 M
set xmax 30

# h7 e4 H! c- H, c: y+ l# B
% `3 c' N' _: ^% p, Vset ymax 1.0
! ^. k/ T8 |& ~  Y" q" o1 k1 V8 f
! r1 Q6 ]. ]- o- ~* c+ ?
clear-all-plots

  X9 F/ F0 v$ Q2 p% q. T9 l/ M# F6 ?4 x. K+ r$ T$ B7 H& W
setup-plot1
% X! T- ]+ _  X, F9 W! P
+ A1 X( ~% V" ?. j/ H. s2 f
setup-plot2

; j3 _% Q( \: E
; l$ G' A) O$ I) P0 P! g: M2 R5 Psetup-plot3
4 U$ V1 G, p$ Z9 ^% @; e: K" }) _
end
- a, a" Z2 [* @2 K( P2 v# V9 N7 O/ c" O, C5 X& X3 ?6 r9 j
;;run time procedures
7 ^* O0 ?/ z8 ?- J5 X
7 z9 @+ x" ]$ k1 x& K% m" Q0 Bto go$ q8 w+ B; e" G* `
- r. `6 y$ A. ^3 A
ask turtles [do-business]
3 @+ S* m% I/ z! o9 D: f  ]- W
end* j( X* |- `; M) ^. w, u5 Z

- i3 n8 q2 [6 B, ?/ I" ~- @* eto do-business * b: h0 I& W. ?! M. H

8 W3 D7 g6 `% a- E# \. a& y
- k& z& y2 x6 W  q5 m% }; r0 Frt random 360
7 j, [, w* Z* j2 q7 Z) T" ]5 Q9 F; ~

6 Z  I  p2 Y& i  Y% i3 y; ^5 x( {+ ofd 1
7 r+ i9 \9 T$ Y" K, m6 p; X

8 k$ e# Q5 }) z- G, t) Sifelse(other turtles-here != nobody)[

3 u" e" ?8 T: R- C# z6 p/ m3 v, G+ j  i0 _& t2 C- ^+ \5 _% e
set customer one-of other turtles-here
* P- z0 {7 w! @0 R0 r
' F8 M+ Q0 f4 O* u: j3 ~
;; set [customer] of customer myself

) p0 e$ M! _/ e. P
: e# W9 V% ?, g. U& v! _set [trade-record-one] of self item (([who] of customer) - 1)
2 n4 A5 N3 ]( k' ]; c2 i[trade-record-all]of self: E0 ~# K. B# ^( d
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ H" `: ?; c! |% B* A0 I  Q4 Q  Q% q0 i! S& d& e/ W/ ~- \
set [trade-record-one] of customer item (([who] of self) - 1)( m" O3 d; p: t! n  [
[trade-record-all]of customer
) E0 O2 M9 k, f5 F

* c4 F, o7 g4 W/ Eset [trade-record-one-len] of self length [trade-record-one] of self
5 w* `+ ~. K- H) M" Z- J

. ?: Q2 Q* k- R3 L& x# B1 lset trade-record-current( list (timer) (random money-upper-limit))

4 M; |1 k# j/ X% h; A, t9 z
% ^. U. w- r9 Cask self [do-trust]
. z+ g0 o1 `1 S;;
先求ij的信任度, A* X! y9 I' A
) T5 R) h( z$ M3 r7 @
if ([trust-ok] of self)% Y, a* b0 B9 J% r; ]% L- ?
;;
根据ij的信任度来决定是否与j进行交易[) ?& o8 N! a* q
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, V$ @0 g$ K' m& L* ^
9 y1 {/ P7 f& O[

' U! ?' z9 ?& L0 s( r! Q; v! M+ j: G, Z. t6 p
do-trade
; M. k, K% Q+ A- j/ e& _; I
6 v+ Q2 U8 ]# W* z9 F
update-credibility-ijl

% H/ c: s4 Q' l" K9 a9 A6 Z: h5 S; k2 o4 Y# M: l
update-credibility-list
4 v9 p  K/ w7 f+ q9 i
* h+ M, c  X' I/ f* X7 j+ Z* g4 R

! B3 n+ @2 g5 t  I8 I# Bupdate-global-reputation-list
7 Q6 W4 S- o3 }# k1 m( S
, H+ k( }% a# {. K5 k6 w
poll-class

% r2 E6 m2 a, x8 `1 r4 \- e( `
& J8 |0 Q+ f6 R1 Jget-color
8 P6 C4 Z/ R  I( n4 S2 U
$ G! R5 }) v1 t. p
]]
8 r8 r! j9 z, Z8 ^+ U
7 t) {9 z" l9 x( _7 F- @: o( k;;
如果所得的信任度满足条件,则进行交易
! u6 @) q: p* [5 B+ H6 y3 U2 C, a; p+ Y& U
[

+ w3 L3 k  o- P, j2 w3 \7 y; m0 I7 X7 u" D
rt random 360

' @7 F8 C, e" x7 n
" Y+ u4 Q9 S; [5 b* ufd 1
  f& N! ^* {- C: U$ U

7 K. b/ |( M0 A4 b" k" |8 b1 `( i]
7 X9 Q1 F3 u" H  ]: |% G

- {% s- }8 n7 T) o% pend
, U! F  V: f( [) F1 U9 g  H* i! m
7 G8 v9 h7 J8 @
to do-trust
$ C3 o4 }5 a: @' ?set trust-ok False
3 M- D% [9 \' y) `: P" L+ A5 `( R& Z& ~2 m. Z

5 T1 J+ P" o7 g/ _, k* {5 G9 V& Ulet max-trade-times 0
8 M5 i- g9 R0 R# Lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
, l' V# D/ E& W3 Zlet max-trade-money 0
3 y$ d/ M+ `( T: _. _" ^) eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]& g8 r+ r$ T4 x$ x$ M
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
3 U; L" T( h: W* l1 j% E8 E" x7 ~( R3 T2 o  I  }+ B

& `( l9 K  g( g3 Eget-global-proportion
/ ?/ d# B! f& U& llet trust-value- @: M7 f+ ]  V
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)

7 W1 J+ J; D, q1 `2 `4 zif(trust-value > trade-trust-value)
$ n$ B! s% g0 u; s9 K$ G# _8 e8 r[set trust-ok true]5 e' g/ J9 F; v1 a( I
end) _# E- m- Y, m% Y! l& E

- n) V; J; L8 X" ~to get-global-proportion
" b0 _& Z1 {6 j3 B4 h) Tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ d& k$ E# u: k* U8 T" h- T
[set global-proportion 0]
1 L2 D0 X, P9 |[let i 0! o6 v9 z% n$ J- R9 ]
let sum-money 0+ S. e5 G3 b- m; O
while[ i < people]5 D7 o1 b+ h; R% W8 l+ A
[
& n3 ~1 Z. V$ qif( length (item i
! i: J0 O( @5 f8 m' V. y[trade-record-all] of customer) > 3 )

5 i; F2 x, m  |9 Z, T+ y# H* k9 U[/ a! R: H( Z) u+ h; O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% N5 y1 m+ F& W( m2 H2 M+ V
]
0 f' Y2 C5 Y2 Z1 o* o]
' d6 o7 w6 K+ w7 p7 }# q6 {let j 0
: H2 R6 J- U$ e4 xlet note 0
  `$ j6 u$ K  }5 L; fwhile[ j < people]
% U' m, J. L( J# n' D! y2 a$ N# W; z* @  C[9 B' i2 A) p8 p5 E
if( length (item i, u0 y/ S8 K$ I( g
[trade-record-all] of customer) > 3 )

( h8 j0 O/ y! F1 y* v[
2 y8 j/ Y% m2 L8 k7 e4 i7 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)- `& C0 r5 L5 i. E/ Q  t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* a& o# s; E2 M3 k: T6 u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& A, x5 @# V1 Q  L& c1 h]
2 \  F3 x7 m& j' F. B2 Y, u]  d0 N( E+ C* c& [* @
set global-proportion note/ V- |( {, g& }) ?7 I" c
]  E7 _, I  z- e/ M& s
end
( r6 o1 Q: h) h; w# d0 n- q4 R% J/ v, H" W
to do-trade
4 b- Z/ ?! z2 c' S/ ]. y# t;;
这个过程实际上是给双方作出评价的过程- t+ g* U' K* _9 \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; h% W, f! A2 }: E
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 O$ ^5 ~4 V- [set trade-record-current lput(timer) trade-record-current
) {' U+ V/ g' f7 M6 F;;
评价时间( k2 L6 c; b: O7 C$ v. h$ v) s- L
ask myself [
/ i7 Z$ E1 K. g% Pupdate-local-reputation
$ g% C/ e6 H, ~# V* hset trade-record-current lput([local-reputation] of myself) trade-record-current
* r9 _% t2 _+ o9 n# d]2 I& b" @+ M; L5 o( ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& i! M' c7 E( j  w7 A& _! D
;;
将此次交易的记录加入到trade-record-one* T. X: d+ h' P2 B7 K5 d! X, i& {* Q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% A# n" S0 M: [let note (item 2 trade-record-current )+ Q$ G" E! J& `7 p
set trade-record-current
. L: w+ f6 v) b5 k(replace-item 2 trade-record-current (item 3 trade-record-current))
# K- l- w8 G! a9 Z! X2 Q, G( i
set trade-record-current( Q; y2 @( y3 a, C4 V! c0 O5 z
(replace-item 3 trade-record-current note)
& h* t1 h# }3 W. V* i
: N  p) u2 I: J% w* A
) q* E3 w( U4 W4 J4 |
ask customer [7 m8 W% k  l' D: `
update-local-reputation0 u  \; L$ @8 U5 ~$ _6 m; W
set trade-record-current; h) c1 I! `7 u
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

& a+ Q7 B  v& @- a9 w. Z]
) B/ k0 K; {9 M! a5 {
2 O$ t2 ~2 l% n1 `% a# M( q* o
$ C% l3 G9 u6 D/ Z5 W# l- w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 ]' T& X% \; j* y

/ i8 Z0 D* T7 ~' ^( kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 {& s% c$ R. u4 Z& x; E1 `6 W+ Y$ e;;
将此次交易的记录加入到customertrade-record-all
: X5 ?1 y  H/ ?0 Jend
3 I+ K( `/ t) C+ J5 D4 {% j# H0 |% g$ c
to update-local-reputation
) i  J' U2 I! H" J3 uset [trade-record-one-len] of myself length [trade-record-one] of myself
. g* w0 M" |# S" {/ c
2 E$ S6 l9 C( y' v# w  Z% s& R/ `0 h3 J+ K0 }# n8 x3 v
;;if [trade-record-one-len] of myself > 3
4 N' f4 F% i, q; h# X& L+ y; d, b
update-neighbor-total
0 Z3 `8 I1 s: z2 P# H9 A* _" L;;
更新邻居节点的数目,在此进行: s6 x2 \2 {9 f5 E7 i9 o+ G7 ?
let i 3
+ H9 W) ^+ {2 J# g3 U4 U5 Elet sum-time 0
: }" p' O9 K' s  L3 _# ^while[i < [trade-record-one-len] of myself]
0 I# F( {+ G9 `; ?+ b. y0 S# G& ^$ }[* u: B, W2 Z: k* U. }1 a
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). v0 [' Y& I" R! B) U1 ]
set i
9 y/ O( b& y- n2 f( i + 1)

% r% Q: K  k0 t) B]% y) G! q- N& M0 v
let j 3
# ^8 L5 h5 s  M0 P: alet sum-money 0
8 d$ I% r) e' x$ {while[j < [trade-record-one-len] of myself]
! o8 a& x( ], w1 p[, s9 o4 G' V/ D2 J, s
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)
9 [8 f, A: v+ qset j
; l/ R1 Y8 u$ Q: v# a( j + 1)
, q2 r) X8 ?3 h0 v$ E$ e
]
2 ~: Q) p" h7 t" M/ [$ s, Flet k 34 E" Y+ T( J1 H0 y3 i9 B7 P
let power 0* {- _  D# U8 j- |& b7 e
let local 0
6 T+ q7 \, o4 [* S1 ]- y+ Pwhile [k <[trade-record-one-len] of myself]: Z) t+ _9 A( m/ c" x5 ~5 T
[
7 f9 p8 C1 Q# X5 |6 I+ o( iset 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) 7 x. D  k: U, y* F
set k (k + 1)( i8 |* [3 R, T# W7 i# S
]& n& X7 B& V  Q2 w$ d$ |9 h5 h+ v
set [local-reputation] of myself (local); U+ r# Z/ h$ m  D
end
* E7 K  }! C' _5 L" V
- C9 v# {' Q6 [9 }: A5 eto update-neighbor-total
: i( o% _; A7 B. {: X9 B+ t$ X0 J
. \: _+ Y/ J) iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- t5 A4 R7 Z9 S4 i+ h# _
- ~2 j' j- _, r, K( a1 h
% ~5 A/ R; ~2 s1 d. T) n9 g
end
1 A* O. F/ O8 z; `8 m7 Z6 v- }7 c
& Q" |' x6 G( O( Fto update-credibility-ijl
3 x8 w7 K& ]  J* g7 J9 h4 x6 |& s- L, q  W$ K7 h) P
;;
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。) P7 j9 s% G& C
let l 0
/ _0 ^( q. s9 v1 V+ G1 X' B3 cwhile[ l < people ]
; C. ^" Z4 F: B: o( S;;
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: G7 }" j' F- E. m2 I. Z7 ]4 A9 F
[7 ~8 ?7 K) r2 w( @9 A7 B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). t  N$ _6 c0 w: y! @( Q3 Q" ~" [  D) K
if (trade-record-one-j-l-len > 3)
& h  k* V, @8 K6 L# b; O$ [[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
# l  Q7 C: l/ W7 T$ N3 x1 C5 m$ ulet i 3
3 h6 [) C. P9 \' `let sum-time 0+ h6 s) S$ Y$ ^, V; f) b& M
while[i < trade-record-one-len]( d, n  u- d3 f8 f- D- M6 F! q0 s; n
[
  F2 S$ G. {9 H9 U3 z5 Y3 lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ ^% q* o1 w7 Y" u! c- f
set i' a5 \! Q9 x! {4 p% q
( i + 1)
* l* L+ e* H' A0 L* t, [
]
5 K0 T5 ~. T& ^8 Ylet credibility-i-j-l 0, E) ~) X. j7 S% ?
;;i
评价(jjl的评价)0 k  w8 l4 K' ~% @  v
let j 3
2 U6 L' F( }  Z9 Slet k 4, h$ z5 b. V7 K! g. i
while[j < trade-record-one-len]6 Z+ ]' ^1 x- |0 i( @/ u$ o' t
[" ?( d, z: a/ k. Z9 i7 w1 L# v# R
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
/ ~" E+ I4 R) S0 p6 iset 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)
& b- K' a5 E9 M+ z0 kset j
: ~1 f! x) V; e/ H  T) B( j + 1)
$ |* r5 n8 X6 _
]
! ]( W( v, \2 s! F9 G& k8 r% Q* 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 ))
$ y3 d' n2 ?" ~. [& J8 r
) \$ l5 B. c% \

9 r) T% Q, p: s. o1 Q9 t' ?/ Qlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 V, {. o$ U. F  A* K;;
及时更新il的评价质量的评价. y* ^% {* F! a( b7 S
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
' c0 V( n; q0 V' q0 {* A- Dset l (l + 1)4 O& G, T9 X; {1 ]
]
# e& S8 o% c/ _6 {% |end
; @+ D' r$ r5 L
# u, v  w  u, N$ @3 J4 i* ?( `to update-credibility-list
- L8 A0 D8 g0 l' \/ _/ K" ulet i 0) R. i6 U% \9 ?3 [) G. R/ ~6 A
while[i < people]
- L6 {- _6 [) f* p6 _7 b[1 m& \+ _# n1 j8 S! u% k
let j 04 @1 s; Y8 V1 Q( u! D7 T- T
let note 0" e% s* J6 ~8 i$ M5 O3 g3 Q
let k 0
: m, P* W8 S7 U- x/ k3 J+ E;;
计作出过评价的邻居节点的数目+ A& l+ {+ ?  m; T, J/ A# \% e. A
while[j < people]* L" M0 s# i. x) m" w: ~3 C+ n
[
1 P- [' i3 J* ~+ w2 hif (item j( [credibility] of turtle (i + 1)) != -1)
# B  p7 l( ~1 I5 ]0 z;;
判断是否给本turtle的评价质量做出过评价的节点4 l- s% J* }- `) g# i
[set note (note + item j ([credibility]of turtle (i + 1)))$ z; A  H2 k+ e
;;*(exp (-(people - 2)))/(people - 2))]
3 i8 L8 t+ Q+ L
set k (k + 1). i5 a7 s; g! O$ G- x
]. R8 K! u6 ^( k* B/ l
set j (j + 1)
$ C- K( k1 k% k5 q" z: |* |]
. y  v& c' ]4 z% ]0 N, X6 pset note (note *(exp (- (1 / k)))/ k)
+ x4 G( s& m) Z1 i  E6 }& Uset credibility-list (replace-item i credibility-list note)4 k+ u; a3 L0 q5 t0 g& C
set i (i + 1)" A$ C' q0 a- @9 c
]7 r$ b; }9 p% d/ ~, V. y
end8 K2 w! I5 m0 X6 h( e/ e

% V) n* X7 G* {6 S2 D5 F2 v6 p8 wto update-global-reputation-list
' ?% b  |7 S' m: I- u4 E) o0 Tlet j 01 H+ x0 v& U& H/ u1 X6 S6 F
while[j < people]6 p6 \1 t7 ~3 T) h
[
% l6 w' l* e  L6 M* Blet new 0% Q3 t( ?) T. N4 ]
;;
暂存新的一个全局声誉! L4 P! C( r7 ?
let i 0, D7 @; w& b( R! ?; C. h% H' o
let sum-money 0
0 r7 P/ U! U9 z: K3 U* R- F! ~/ y: jlet credibility-money 00 W+ t8 P! H" A9 A& L6 `. ^, `
while [i < people]) s& O" Y; ?* I1 r+ W  Y
[
1 r9 |2 D% A* h1 z3 H5 R* H" ~6 Q7 C/ Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 N/ F' j5 N( s7 s: lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 Y# t/ q0 n. Z1 Uset i (i + 1)
7 Y* S5 H6 j- V$ _6 S. Z]
3 C/ V8 _  o" S' r8 i( o$ Elet k 0, S( I7 o7 A9 D: a& [
let new1 0
! ~+ w( \/ ]. v1 q5 vwhile [k < people]' K1 C' A+ T8 W) D" ^
[1 y; m: _, f% F9 v, }+ y6 _# l+ z1 r
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)
0 S0 C7 ^9 w( B5 _: ]2 E8 g: Z! F+ wset k (k + 1)8 s/ T8 X, Z6 b- [# c" T: \1 q
]
( H$ h+ {6 h2 J: q, Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   a( o" _( b% D/ _6 i
set global-reputation-list (replace-item j global-reputation-list new)5 v4 O3 A# W% E  k+ ^: m9 ]; T
set j (j + 1)+ @$ [' R2 o. U1 i" k
]( r) Z! K* c1 D
end
8 I4 E+ n; x% O& I% q/ _% |; h6 l& ?) H/ U) }

7 `9 z  K: T% {* y; h# m
2 S. H6 j% l7 W2 {8 `6 i: Pto get-color4 w2 ^4 z/ z3 T+ i' Q9 s
, p4 S1 D6 \! E2 m' p
set color blue

) `$ A2 D2 o- r4 v: Z/ u" e/ oend: v$ m- i8 C& `
, O2 X, ?; K, T0 W& ~
to poll-class2 O; j  m2 ^0 y! X0 P$ q' v
end
6 {+ J' i6 {0 m) M) q" d
* }% R; n4 O# bto setup-plot1( t1 b# X0 [1 J7 \8 A) N
5 O$ X/ W4 Y9 [3 r
set-current-plot "Trends-of-Local-reputation"

4 y9 h6 d* v4 U) D/ s. A; x# b1 B, k5 [* D
set-plot-x-range 0 xmax

; K  o, L3 o, z, R4 ?# V2 N; V3 D/ D) N- H' B8 B8 Y7 e" _: K2 v
set-plot-y-range 0.0 ymax

1 i( m8 h0 D4 s/ ~end% ]( k# o" n$ H7 Z: \- p

- g; J8 P" d  x3 q' N; Y* E& N( Sto setup-plot2
  Y+ Q, N8 v' [8 e8 k, p  W" y# x& `& R3 u( H
set-current-plot "Trends-of-global-reputation"
; p5 @" C; x# i$ Y# W- b
0 e+ u4 ]  h" ^& Z% s: |
set-plot-x-range 0 xmax

4 \3 S+ [6 y" ~$ O. i5 Q; I/ d5 d+ q8 c1 X2 G+ |& X6 G: z
set-plot-y-range 0.0 ymax
8 F# O' C+ m( e3 y1 I
end
9 G: B' w. Z. n4 N/ e5 G& C9 E
, {2 u& j5 L- R% O  o) E" B$ sto setup-plot3
. l2 O0 _8 R$ C( z: D; {; e5 ]
$ q  Q$ c- m0 I3 {  Nset-current-plot "Trends-of-credibility"
$ c$ }, A/ t* t
% ]' u7 Z8 o+ u6 Q0 @  n0 I7 Y
set-plot-x-range 0 xmax
7 I/ V3 ^( G# n
7 m. ~" K9 b7 `: q% R& G  i0 k$ M
set-plot-y-range 0.0 ymax

  q/ [/ I' f9 G4 [1 |end
+ H& z+ t& k9 y  Y* \7 H: |. J/ V$ |/ \# e
to do-plots
; K' y: Q# s9 `4 X4 nset-current-plot "Trends-of-Local-reputation"
( O+ ]' M; |2 G. Hset-current-plot-pen "Honest service"
" ~5 J& g4 J% {' V4 u2 N7 Nend
* S7 R& U. L3 r3 K, r+ Z+ P
+ u) p, Z- F/ M) M) m[ 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.( p9 E/ y. E( x  z. Q9 s5 P* J

2 i3 _$ `1 H- c+ W+ u% t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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