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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:8 g9 q: E; ~- q6 X4 w
to do-business , S, t' i& f2 Z" N9 P& Y5 K
rt random 360
2 R. Y/ Y# o$ a$ p$ Z; T/ n fd 14 A5 j+ W1 l$ F5 S& F3 c
ifelse(other turtles-here != nobody)[
3 r4 e. ^) V7 W' H$ J9 O3 _   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题." Z+ w4 h% m, ]7 l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 U- d+ }% J, i3 L& N7 R" b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" Y; q% p9 x$ T; N& S
   set [trade-record-one-len] of self length [trade-record-one] of self
0 K6 ], X* [* b9 E  U7 f   set trade-record-current( list (timer) (random money-upper-limit))
5 n0 I2 _/ h" A' g9 D. i1 f. S* n2 f8 X) n  ^  O
问题的提示如下:
* @% U% w$ r, f4 k& M+ H5 B  u' f5 n5 ^
error while turtle 50 running OF in procedure DO-BUSINESS) Q) I; X$ J5 ]  R  P4 u
  called by procedure GO
8 o- ~+ e8 D7 T" ?0 q2 q) \. fOF expected input to be a turtle agentset or turtle but got NOBODY instead.7 d2 {0 ?0 C- R. s
(halted running of go)
1 K% Y3 p" ^5 Z' k6 \# r; g2 K* m$ s' p3 g
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
7 ^: k. x; U9 Q, e0 g; l% o3 n4 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! x9 b4 z, C: L0 V0 M* n
globals[
5 `- }( u( U9 ^1 N- rxmax
, s1 ?0 S/ n+ W" ]' F+ mymax# A# B4 F% o- W4 `- R4 _; {* l
global-reputation-list
0 E5 J9 S; g, w; `. i! s3 E& V5 \, {3 |4 _3 s9 _3 X0 b: B/ R
;;
每一个turtle的全局声誉都存在此LIST; a3 ?* S. s+ ^/ V' P0 p4 F5 Q
credibility-list
% q8 }. W8 M0 w) w;;
每一个turtle的评价可信度4 Z0 t# ?6 A7 w
honest-service
1 z6 E8 T1 N1 Y. W7 ]3 l6 S- U9 ounhonest-service
7 g$ j" x* c) ?2 n) g; R  ^2 V9 voscillation
5 S9 r# @+ y7 X0 rrand-dynamic- {* i  B  J: u4 e: a' c! o
]
* a) e5 h0 Q0 O' f
- b- O  ?, C6 u% [4 }9 [/ E9 Z+ kturtles-own[
$ B% ~& k3 X$ c$ J# Atrade-record-all
. n8 H/ [1 g2 n" l0 b7 _5 S  u;;a list of lists,
trade-record-one组成
8 n: J* J* {8 Gtrade-record-one. X& W4 X# g2 k' ]' g
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* M9 W1 u% i' {& s) S$ Y2 C
* v9 Q2 f. G% S* I* e, H;;[
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]]
" l2 A0 U) [# g" K7 `- Itrade-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]
/ u' i! M( N- E% p1 @' X4 b4 ?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
1 ^/ `( {2 u2 ^( Sneighbor-total3 v2 S4 V0 A& K5 S. f/ m0 A! S; z
;;
记录该turtle的邻居节点的数目; \9 X; \8 p" K6 a9 v& k- z
trade-time
$ w2 k; T8 [) `8 S;;
当前发生交易的turtle的交易时间
; V" Q4 S  S4 L3 I5 Cappraise-give6 l+ H4 z% |; y! o; \/ Y, E
;;
当前发生交易时给出的评价$ Q, r' e6 C8 N' w; `9 U( W/ E* K
appraise-receive
4 X" ?' T# b& ~5 ];;
当前发生交易时收到的评价  E* s4 T' L$ T
appraise-time
- l, B* R; m3 a* u; V;;
当前发生交易时的评价时间! l* ]+ X1 s) r; o! s" ~/ ~
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" m  T9 T0 u4 v8 \# Q
trade-times-total% t5 {2 \' P9 ]  ^
;;
与当前turtle的交易总次数' X% ^, C! |) \3 y+ m. j
trade-money-total
0 e* a" n4 U0 J3 R* u0 N7 B;;
与当前turtle的交易总金额! ]4 ?, n* ^# c! n) }7 G
local-reputation
$ E- `9 b: u4 [4 @6 @2 b  Hglobal-reputation& J: Y2 k# K- u& U) L' f# C. z1 U! t* i
credibility
  m$ a' p9 L6 ];;
评价可信度,每次交易后都需要更新
: P7 ]1 G( n2 N' w9 k- K( b' q% x1 Ocredibility-all. n( c! b( _: S) K, x- r9 S
;;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/ O9 S! Q2 P3 u2 A

5 s$ z6 x5 Y7 M* C! C4 @;;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0.58 b( T2 R: L# }0 ^4 Q/ G/ t
credibility-one
9 a! [' T% c! w& j0 [;;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) _- n3 m' w( a5 x6 {  d: _
global-proportion
  a0 S) F, Z% Z- |9 E! m+ Ncustomer* w$ b/ `0 t$ \$ ]  b& S$ C
customer-no  Z1 f" i. G, k9 a+ y. p; \0 z
trust-ok
7 @& P3 _0 V, x, f* Y6 ?  _! l2 etrade-record-one-len;;trade-record-one的长度2 v" p! U: O  _
]. w; Q0 |7 z; }$ r

% u- z# V1 x) I, r+ M;;setup procedure4 o/ r8 B8 h+ E/ |) R8 `) o
* f: n- b% \5 n0 Y7 q, h- |! o1 I$ ^
to setup
- @/ ^6 I$ e( h' v' x. u- `3 x- t5 z1 u! Q* E
ca
) j* }2 ?9 c( S* t

  }$ r9 G( r3 W! Kinitialize-settings

* E" ~- o) ]' C, E1 D; O9 [, ?/ \' q
) U& l+ }. m7 j  P8 y' ccrt people [setup-turtles]
$ P( v: X6 I' N. `8 R9 L9 B8 l1 `+ a

; T! }% O2 [7 N2 L- Sreset-timer

2 d4 W6 _. l% Z8 O8 P# b2 `# P, c1 D7 q6 X5 h, d, ?& V
poll-class
6 F9 |* S- B5 [4 V# |
& G/ H8 U: U/ @* f
setup-plots
7 r: l9 t9 y' h! b. Y6 T5 i( Y
4 c6 s, o7 Y) p& j+ w
do-plots

$ y8 H9 q5 ?2 m1 `+ p5 wend5 N4 }/ I5 D% U

, }& ~2 Q& u6 [/ ^- e5 @8 F. e: _to initialize-settings! q4 D! R$ }/ {0 [
3 U- W- H+ `8 Q. y* b9 A! x& M
set global-reputation-list []

5 B' Q( u1 J! |2 j  B6 P3 ^( i- s' f$ |. b# n8 Z9 r
set credibility-list n-values people [0.5]

3 h- V) a  z& B) @7 y! e) r0 Z: t( ?0 e4 ^6 U
set honest-service 0
# P; z: Q0 X1 U5 S) {+ h" u& a0 c

$ c) B: i" t8 U, E# j; Uset unhonest-service 0
7 \; U$ p7 q$ ^5 K6 A( G# s; @
5 D& E% e9 O, h0 [9 E
set oscillation 0

6 ~3 r8 M8 J. U  k+ @9 {4 W- F) T6 x) L
# S8 s7 B) f- u5 H, Y( K6 O- gset rand-dynamic 0
# A! H& ^: v; `& ^' o
end5 ]1 k: H) i- X# I( l
" @3 J4 Z1 Q7 g6 Y& m  h% z$ T
to setup-turtles
# ?! B7 ]* U  X1 @set shape "person"
! J! C5 G: p5 G, ]setxy random-xcor random-ycor
' y4 Z0 O. t& i! \/ s# X' O% Wset trade-record-one []
2 f6 _" J* {- \8 ?' A
) K1 e$ r' w2 v
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 O* ~$ E# X+ f7 q3 ?
0 _, b- d7 M) T% G/ m5 F+ g0 y
set trade-record-current []
' j6 N7 a- Z. s( y8 pset credibility-receive []
. f% W- Q/ d: A) D1 _2 {  Iset local-reputation 0.5  `# a( W  }4 ?& w
set neighbor-total 0( @0 P: I4 @9 d$ |3 a, A
set trade-times-total 0) S5 G  ^  u  T6 m7 X. u, r8 L6 F+ b
set trade-money-total 0. K! Q6 [9 l$ z- I# c& K$ c+ F7 i
set customer nobody9 ?! Z/ M5 n  q! ^3 E6 y1 P4 N
set credibility-all n-values people [creat-credibility]
, s6 P" s2 v' [/ g4 ]" V; jset credibility n-values people [-1]1 L- u3 ~9 L) C" c+ u- @  n
get-color
( P5 o  Y/ s5 [5 u: m+ I: i: p
4 I( `; k6 ~! u
end
. O5 E7 D9 o- g  S# `  S9 c& ?% }
% X! B0 j; R# J1 R) uto-report creat-credibility, q9 K1 M3 H+ `* ~; \
report n-values people [0.5]( ]5 z; n+ V5 ?
end
" A$ U; Z, D6 Z- |) T  z1 V& p' `% m  c. M( i: ?! l+ ?
to setup-plots
/ ~, R8 H% z0 U8 A8 K
/ |: d+ f1 ?5 H7 x, F0 W/ nset xmax 30

( P6 B9 p  X! |/ ~6 U
, ]6 g3 N9 }; T4 Nset ymax 1.0

* E/ s0 M8 _/ Y1 e  I! w0 e% k: d. _- n" K
clear-all-plots

8 n4 Q8 }0 c4 d. W  Y5 N
8 Z# c+ T6 h, ?: d4 y2 l! s7 y( C0 Asetup-plot1

5 M4 X$ k- Z* L9 u0 [0 l! H% ~$ C' X/ x/ {! w3 n! y# U) I
setup-plot2
6 v( P' t7 |' i- Z) Y

* ~; {, w% w' C- Zsetup-plot3

% {. e7 Y2 e/ X3 A- L1 D9 Pend/ ~2 S0 @: q" z9 W

( j4 C3 i- p  Q8 T/ i( b;;run time procedures
4 W" l  R: _% a( o9 ]
3 z3 n" D" F9 A% v2 X# ?4 fto go
  D: V8 ~9 s. u0 ?4 u* q
2 F+ k' v- m- N. O: Zask turtles [do-business]
2 ^: a* C8 E/ V  q, A( s& P
end4 F: P% Y) W+ n" Y

& K7 _% C7 j1 G' H; Zto do-business
( r2 I2 c( \9 y4 W
9 l$ _  n" F; V: o
/ ?; t2 _; [, C
rt random 360
  X! W- V: R7 [1 B$ L: K
6 j; Y& ?- G3 V2 {
fd 1
/ H/ |/ ]4 V% l7 S- |5 Z

1 o  M3 M5 `& b9 W" c8 `! E, c  bifelse(other turtles-here != nobody)[

9 u! A, W! S2 n1 K- |% F- b9 `- z+ b0 x% G2 M  ]. u& d
set customer one-of other turtles-here

7 D, M3 H* S- C7 C: r# h, q
7 }3 t3 o7 z3 [1 `;; set [customer] of customer myself
6 {' ]% F5 |5 R# i5 w

7 C$ ]( Q8 J( n) }set [trade-record-one] of self item (([who] of customer) - 1)$ {1 I; F4 X( `% `# p0 E+ F
[trade-record-all]of self
) l5 ~5 Q( T6 t# V, {- A2 `;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
0 V; m* h2 o) d4 ]

8 D* H: J6 y7 y) p+ |* nset [trade-record-one] of customer item (([who] of self) - 1)% ]" p3 R! o5 n- m
[trade-record-all]of customer
5 n0 A/ s2 a! C$ c0 g9 r- S7 o

0 z1 Q6 x, a* q( kset [trade-record-one-len] of self length [trade-record-one] of self
" f6 S4 C8 }8 {' D: V: h7 `6 n
( }7 A$ g: x$ d$ O/ O) Z0 y
set trade-record-current( list (timer) (random money-upper-limit))

" h3 A8 K7 g% l) n. x5 Q/ r: g& z% J- o& z8 P7 F6 W
ask self [do-trust]* X4 i) R. w9 _* }% t# W2 M+ z) e
;;
先求ij的信任度
+ ^0 z9 h& n$ u; C9 ^8 T
% G; S7 f1 X* ~+ m! O, l3 [) Sif ([trust-ok] of self)6 N% ]4 `& {- Q) M2 e+ `4 _
;;
根据ij的信任度来决定是否与j进行交易[
, \! J( u7 \. T3 K. h- Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 H# `0 J! [8 J: r" @
/ e% R2 `1 N+ J/ j- E: m
[

( |2 E+ O2 u( C% h
* E1 _1 Q4 O% `/ c  _8 u+ ydo-trade

7 r5 G# k, }  ~8 M  \
9 |# U! z4 {6 `2 s/ Tupdate-credibility-ijl
; ]; V4 b$ X% `! a, K9 j

& k! ^4 E: M& p0 u9 c. lupdate-credibility-list
2 f  I' H$ n& W1 J; W) I

% {+ E: t& _6 j" r, z2 {, ?  }9 v; ^/ w/ @0 w) B+ c4 }
update-global-reputation-list

( E$ e1 o# J5 _& m$ v
; \% o* P* `7 k3 f, M' i- d4 ~poll-class

6 p9 c6 G  Q) g) ]& N! F% C- |3 s
7 |8 k2 @) u7 j0 N7 Vget-color

6 t2 v" [2 }5 R! ]
5 ~' A9 ?  m; j* r7 i0 K]]4 M% X% }. U3 C4 J/ G& V! t
) O% [0 i; \1 K* s
;;
如果所得的信任度满足条件,则进行交易! @" C7 Z+ n  k& _) |

2 D$ b" c: l: R7 U7 B, ]1 E. e- t) D[

5 ]7 t9 k5 C; T( w- ~  C* Y/ ~
  `+ M3 p, U5 u( F( Art random 360
3 I8 S/ z; W5 a6 m- s

. F# Z1 U8 p+ efd 1

- S3 N- ]: v' O8 T
% o3 ~; S/ A; N" a' U( f2 U3 R7 t5 V8 y6 s]
% m; B  h0 S+ U( Q
5 q& k  b9 s7 }- G4 A. B$ p. \
end

. W0 V# @/ x0 l+ J% O; ~$ i0 P3 l5 D/ _& M3 q" q
to do-trust
5 ]# {7 u1 k2 Q) V8 q* ]% h( k( L' `set trust-ok False. l( ~' g% t7 B

) @# `4 I+ S: N

. x5 i2 j- N- c  x* Z9 Tlet max-trade-times 0* e- `4 o8 M6 s' g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]9 l$ B' a1 l" ?8 l( m
let max-trade-money 0
: c( k: F  V5 M, q) Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
& [# n  f) r0 W! flet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* @% j( d( M3 {( W9 {0 P$ L* O% j; E, q; v/ v
7 p2 _0 f7 \# i% s) T/ Q) Y  ^
get-global-proportion$ L/ }0 H! c& Q7 k
let trust-value8 F* a* {$ o/ m4 I2 o
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)
1 J/ D, l5 y0 c- A9 b& |  c% o
if(trust-value > trade-trust-value)
% U7 X& K" F  h5 V1 u[set trust-ok true]: M$ O$ [# D) D' g  P
end
+ v6 w8 E# F) A) k  s! Y; ^* c2 u: ]
to get-global-proportion
8 J% H( V7 u' I1 d* wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 Y2 p2 ]& V) n4 T' C1 {
[set global-proportion 0]; i& I$ U2 A& D- w) q
[let i 0+ P+ }2 \' B4 F
let sum-money 0
" Q& |; Z8 ~+ `5 k' ywhile[ i < people]0 \. |% E( L: X
[& o) X/ G. ~$ \+ F) c' h* M, g
if( length (item i( B( W  l" u# ~2 q& C
[trade-record-all] of customer) > 3 )

; ?1 l. T7 C+ A! _$ u3 k; f[9 B$ Y9 l' m3 x( |3 n" t1 u
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 U7 `  h* j0 @; Q5 L7 j! l]& W' }( Z: n' m1 ]# u5 N
]
, a  Z7 V9 w* P2 xlet j 0/ d, K3 L3 I$ j6 Y
let note 0
, }6 G" v6 f, W0 {while[ j < people]
+ h$ R# Z, a0 u& D[
: R5 f6 g5 `  y  K5 {if( length (item i
8 C0 w5 }0 N( Z[trade-record-all] of customer) > 3 )

8 a4 X& J2 d2 n: H[$ c8 B- B# l7 ]3 `8 S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# s. ~5 b2 Y6 J8 a& M5 j$ `9 T[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! A0 s; U3 t% c  r- Y4 \) C
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! q9 G0 L& d" O) o! Z* _; j. D
]: c# ]: M1 j4 b* Y% U: {4 d% ?
]
/ \* J- b1 ]8 f1 }, V3 b. q5 Bset global-proportion note
/ H, C7 B0 L- n0 S8 _9 C7 c]2 b( r# e- K' Q' e* o' i  Z) A8 k7 b9 H
end) y0 ]* i; R! O8 E6 d: D
6 p% g* T4 E' U* U/ W
to do-trade
' \5 M" Z9 Q0 l; U% u! W; v;;
这个过程实际上是给双方作出评价的过程
" v' X5 C6 N1 I* g3 z' uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! Z. o, |" W0 A1 s% u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! ^- P; o5 [* j4 g
set trade-record-current lput(timer) trade-record-current$ N3 h. f8 \0 \2 h( n6 i2 d- `
;;
评价时间
  n/ I8 b1 O- [+ h1 Vask myself [
1 }9 `0 s+ `1 _; Z; X7 ^7 Yupdate-local-reputation7 q/ g+ w; @! p( t# |& Z& s$ V
set trade-record-current lput([local-reputation] of myself) trade-record-current( i+ X7 p6 ?9 }9 Q5 K
]7 |+ H* p' K5 G9 t" E) P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
* y( w/ V4 @/ C! S7 s$ e;;
将此次交易的记录加入到trade-record-one
% W( I! f+ }5 `  x% aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): z4 I$ a! a1 ^4 \  }! U
let note (item 2 trade-record-current )$ P5 K' E6 ~, v9 p! K
set trade-record-current. c, n1 G2 i" X; P
(replace-item 2 trade-record-current (item 3 trade-record-current))

. w8 ~0 ~$ f8 Q5 ?( i) Oset trade-record-current
7 S; b" b7 v  a: c2 U6 g9 O' V(replace-item 3 trade-record-current note)7 j7 H# x4 l, d8 C$ s* L+ k: ]
; s' d7 U5 }6 z* J" ~& A6 i! N

- K, D: P4 I4 U; Q. bask customer [' F6 v6 b# D' G4 G/ P1 ~/ j. d' _
update-local-reputation. ^4 ]! [1 d8 |! X9 ~; F: k
set trade-record-current
; d% u" s$ @- d2 m) ~, {(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ q# z! y9 j2 h3 @4 i; A
]& P. m" w/ {/ m2 G7 i; G" g' N! Z% j9 C

6 z3 @1 q; D7 i7 G2 C" O1 E6 u
' K" I9 ~3 ~. h- b0 N. [
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer0 }# \9 c/ U# x4 y8 I/ y
+ d9 ]' Z; j6 N! r' \
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& _4 o; N+ f$ U3 q  r% [;;
将此次交易的记录加入到customertrade-record-all, U3 B0 U- r% U8 D8 B
end, _4 m$ h2 X9 T) J* K
/ }9 Q+ K; G- Q
to update-local-reputation; [: m; R2 r$ m$ N2 L
set [trade-record-one-len] of myself length [trade-record-one] of myself
" E9 P% R* z3 S5 ]4 [2 b0 P- {, c
/ f6 r6 u* T. c- M
;;if [trade-record-one-len] of myself > 3
0 g) W2 R; }+ d+ w) [7 p9 Z) F, ~6 s2 H
update-neighbor-total
* v/ @2 {) p3 q3 };;
更新邻居节点的数目,在此进行
( C7 M. @5 {. E& t* tlet i 37 ~$ z3 n5 p' S* Q3 }% D1 u
let sum-time 0
5 L" @; U4 `6 P- ]1 L  I0 bwhile[i < [trade-record-one-len] of myself]
- ~4 o, S, Y' W4 Q[$ |0 E3 b' T$ k, }1 U
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! @+ x& h4 f6 ]; K4 f5 lset i
& A2 O& x7 J) B8 j1 |( i + 1)
5 @. g9 O& m, J8 }
]
  n3 ]# }& X+ Q# P- K2 h7 [* S  elet j 3/ t& V" C' l/ x$ W: |4 a
let sum-money 0
+ n6 m5 C- o4 \2 X% ~  ewhile[j < [trade-record-one-len] of myself]
, ?  ^1 d$ f7 |! e' D[) o% t' ?+ k" z7 m3 {5 V' ~9 }9 C& [
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)
. {2 n8 \9 p$ \5 Kset j
2 t1 b( f, X0 f" O! I* i: Q& N( j + 1)

3 Q. T9 E' j# F% ?# z5 t]
, [7 N, w3 y4 @9 plet k 3
$ C1 p' k' A& H  {7 O- [9 Vlet power 06 |$ F! W1 [* O( r* j
let local 0
- z% ?9 l; e5 e/ _. A/ u7 d  Ewhile [k <[trade-record-one-len] of myself]
" L$ p- e: `. q  h. ], ]5 g+ R[
; B; `; A* V- g& t* k  Oset 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)
6 r+ ]. h( N( {0 Y1 e9 Q& dset k (k + 1)4 `; h; t% M6 k5 a0 c
]$ C& V. f4 `- m5 ~3 G
set [local-reputation] of myself (local)
2 O) Z/ K$ c9 h6 h/ Send# a% _0 d4 z2 v% x, ~' D

3 ?. A' A3 m) Ato update-neighbor-total, P9 X  \8 i6 J) {3 P0 @$ {

, w7 g8 M- H/ E3 s2 e3 Vif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 ^9 F/ d4 ?' H! k4 d( W- b

  U$ e& g6 i- ^8 _

) O* Q2 R5 u0 a8 L1 a$ G* [- Eend- `" {! v, x* Y4 `" G* B% t
1 H. w. F& N4 V9 p0 f: \$ m
to update-credibility-ijl 8 D; z8 o8 k' J4 I0 T

3 }2 o" P! Y$ c3 i3 @( w1 H; A, t;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
8 G3 B/ h6 N) `5 D, Blet l 0- s; r. t( \7 ?+ R& `: h7 ?
while[ l < people ]
4 l/ z/ U& N. t8 g" R;;
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
* O; `& m% E: W9 D, W/ o: j; g[' J+ a2 F$ ^9 K/ W1 k/ I; l
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 ]) p; ]- U8 {) r: W' u% Cif (trade-record-one-j-l-len > 3)) I& y# @% x: U/ Z5 O5 U/ K4 a, k
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one2 u5 ^/ F1 G3 U- Z$ D
let i 3
+ I# [9 w9 m' [' rlet sum-time 0# v9 O0 D8 s0 m1 n* _7 A' E4 C
while[i < trade-record-one-len]
& x1 `: @$ Z9 S+ O; ?0 a[
9 u! u# @! U- ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
$ i" S0 ~/ F) K. J9 \$ h$ g% Cset i5 k8 X. k5 J0 X0 x; ]2 Z9 P
( i + 1)

3 x0 ]' r6 L) |]5 l  y4 c4 X6 r5 b( {  C
let credibility-i-j-l 0
! d2 v! n7 B* E;;i
评价(jjl的评价)
: J, W. E6 M0 j5 C: Glet j 3
- X$ I' ^4 |& T! X. }9 dlet k 4: u9 K, t+ K# z" _; s
while[j < trade-record-one-len]" z- D" [( y/ j  F
[* P0 A4 ?5 f" k1 q( d6 B
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* u3 t3 j+ ~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)
, b# s* u# T( Z7 ~set j3 B" i6 j1 P2 n; G( s! o/ f  P
( j + 1)

% `8 e6 R0 _6 T6 A]1 G- v( c; t0 n; ~4 P  }
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 ))
. Q+ B" G. G7 @4 R
! B  Y" A0 r6 R  k0 ?% d, [2 R
2 z4 O$ K1 g  c) z+ |6 a0 R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
/ b! [& i9 t0 P  E. U;;
及时更新il的评价质量的评价& K# X9 P6 Q3 ~/ b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% T+ t: X0 y* D% a2 tset l (l + 1)
2 x+ Y  c6 I1 W  W: G: J]
( j  G% O2 _+ Q: W% dend" w; }' H& R5 Y- ?9 ~5 G) N+ f
9 M: u: E5 v  E# R0 A
to update-credibility-list
& N  q7 Z' q. D: U2 d, blet i 05 v' F& J! R# @2 R; G
while[i < people]
+ B$ i5 K  T7 z' O4 }' h[
" ?, E, A4 Y& p8 S0 {6 J) alet j 0
) L4 g+ T- l# H! O: a3 qlet note 0
' R2 \1 }7 L: _& c- klet k 0+ ^  g- {* J* t  b# }
;;
计作出过评价的邻居节点的数目7 J+ @+ w" d; i% |* c# }
while[j < people]* m1 F+ s) f- M( ^! G- k
[
) ]8 F, Z  j# e! Tif (item j( [credibility] of turtle (i + 1)) != -1)+ F9 s1 ~( Q" m# U; s! Q' G
;;
判断是否给本turtle的评价质量做出过评价的节点6 _; L3 M& M" S% j6 ]/ q" A' m: @
[set note (note + item j ([credibility]of turtle (i + 1)))' `: s3 H( d! O- @
;;*(exp (-(people - 2)))/(people - 2))]

/ w( U' x  @% I9 bset k (k + 1)+ i4 G3 Q, D; h7 c, t* J; ^
]* J5 M" W: n, E: c& z
set j (j + 1)% M) S7 W  C% R- t4 j
]+ a6 L' r# j' N+ M' b; f; k: w
set note (note *(exp (- (1 / k)))/ k)% Q; M  |; {, `3 [
set credibility-list (replace-item i credibility-list note)
4 U& m3 k0 A' k3 y; uset i (i + 1)
) g. d" K$ E$ o3 o4 g]
& Z# ^: v6 D/ e5 t5 [& k9 Yend+ e" b+ }6 N3 v6 H; N% x

5 I& J4 B  g1 L: A! s1 L4 ?) Fto update-global-reputation-list# e- H5 G5 U7 R/ F
let j 0
& r& J4 b/ z9 C5 H9 e' u' rwhile[j < people]$ Z0 Y2 i! N9 H* w9 a
[
6 |. C7 E, r0 H/ ?, }9 b4 y1 l- ilet new 0& \' l- Z. p1 I7 ~% I
;;
暂存新的一个全局声誉
; M* z0 {: n% {+ Y  K3 s- blet i 09 [' M) e% n3 R% S/ f
let sum-money 0
3 O6 U% K- O! ^) h/ I5 Wlet credibility-money 0/ Z* N0 p1 Z, Y+ O2 ~' @+ E+ A
while [i < people]4 ~) v( y3 t3 G  K# o
[7 y$ K9 w% }. l* F4 C
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
  V/ D: T" @: V/ l6 Q$ E% O# N8 ~set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( j$ ]3 A& ~- S' n. hset i (i + 1)
* P, u% F+ y2 `" Y5 o  ~]
9 z! y* u! d1 D* ?3 I5 }4 |let k 0/ w, v; X$ \7 M- |' Q
let new1 0  L2 f7 `: y- s; h: j, f$ t3 h
while [k < people]
3 v7 a/ G! Q9 r9 N7 x' C# n& d3 S0 U4 s[. A' K# ]) t, O; |
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)
$ b' L8 [4 ]) N, j( aset k (k + 1)
7 J1 i- a" ?4 P7 O9 h  y]
  q! h; j4 k! |8 M6 hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 9 |- \) a- V" y( j8 P9 Y& v
set global-reputation-list (replace-item j global-reputation-list new)
  ]3 G# C, ^* l# _5 b& V9 ]set j (j + 1)
& m/ Q6 g, B0 r% g! y/ H7 A, q9 b]/ s. O1 E  |6 o  B+ C
end
1 D6 R+ E8 p6 p8 @
7 q; u8 _8 }  t' P& R7 h8 @! M0 }  D: O& L

2 K, e7 [; H. k0 Z/ _! W0 [to get-color
! s5 o% c% a$ G, j0 S9 L# i/ r$ G/ u
set color blue
5 G  K7 v' U1 a' y1 |+ V+ k
end
+ ^" H  n2 o; Y/ ~! Y
: `. b) K9 l9 @to poll-class
3 ^+ ~. S8 E% i+ ^end" l0 X0 [3 ~, O: n+ B$ z, `
' ]  z# F0 ^9 o  ?4 D
to setup-plot1" k3 A+ I+ ^& v

! ~* A% g3 B& B; wset-current-plot "Trends-of-Local-reputation"
3 |( y: |' D8 N; m1 a( r3 j
' L3 Z7 R, G. ]5 b: {4 T; z" S
set-plot-x-range 0 xmax
  F* D% Z" U, L5 C8 E
4 Y$ e$ w) r% @8 B5 j9 P0 {
set-plot-y-range 0.0 ymax
# ?# w, x: t; i1 U& ]* h
end
3 v, X/ }2 a) x* p
6 p" }% f( c9 Z- g$ }( s4 z% qto setup-plot23 V5 V. I2 E) k- ?0 C$ v! a

; f& b2 N+ l2 g+ b& E+ T9 bset-current-plot "Trends-of-global-reputation"
- r$ G# P& ^# H

. D$ J% g2 X% c9 \# G! V/ h$ Tset-plot-x-range 0 xmax

! L" F' s3 f( I7 Y' J- J! ^4 k& c6 R' @( L. S" K$ b
set-plot-y-range 0.0 ymax
0 U2 k8 x  H! o, _# S2 i
end2 [" v, X  C8 }* X: @) y
7 z; S9 I8 M2 M
to setup-plot3
1 k, r6 f" N' c2 D4 B2 {9 P" A' _
set-current-plot "Trends-of-credibility"
3 j$ y1 I7 v( G  U5 J( w: a: @
. D* m8 j$ g5 c4 u; O( R3 J% q
set-plot-x-range 0 xmax
5 z2 T* n' {! R6 o9 m

. b/ M# n9 e- P  \1 s: J  U7 B$ u5 cset-plot-y-range 0.0 ymax
9 p7 Q/ R' u( g8 p6 w1 v7 Z: u
end# i. N2 d8 S! E5 K# E
2 l9 l, V8 I3 @# d* C
to do-plots
0 ?" C9 q5 K0 o2 S$ Eset-current-plot "Trends-of-Local-reputation"
1 W$ R( @: m9 v$ ]set-current-plot-pen "Honest service"$ ?5 @0 I7 M6 f$ v" V* Z
end
: I/ Z; v1 J7 x+ V6 v
  ^  ^% f7 E/ c[ 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.. @  N/ N9 d' @5 F
1 {5 ^! [# d7 s$ o0 i
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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