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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:  U; p. {" k% h0 d8 \3 h' f
to do-business ; R; K1 c$ {4 Q7 z2 A5 S) I
rt random 360
1 |" F& h3 d$ o# M% u% L" d8 i fd 1- a2 Y5 w/ h: A* _: E$ f
ifelse(other turtles-here != nobody)[
+ Z2 p* V* z; T2 H/ o5 R! u8 o   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 Q0 [3 a5 ~+ Y; V3 {$ k* R9 W
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' Y; @3 Z/ ]' g0 d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 w1 _' b& I) H9 ?1 H   set [trade-record-one-len] of self length [trade-record-one] of self3 O: K: y/ ?. |: S
   set trade-record-current( list (timer) (random money-upper-limit))% E4 N2 q1 o2 M- m# R- v' _
- K3 v) B2 b# y- ^$ `2 f" ~
问题的提示如下:
, z: k( u% U  N9 Z; y. z
3 ]* H3 V) r. t& lerror while turtle 50 running OF in procedure DO-BUSINESS
, `9 ]( L! V' e7 ~! u  called by procedure GO6 Y) v% k% L3 b1 O: U/ y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 C$ y4 H4 K% V
(halted running of go)
; C3 E3 S2 M, u" x% r  K( V% d' u. l2 X) C
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~~
, A5 q0 R, w4 q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! r) w1 c* O% A) S! ~
globals[# u; y5 V: \, [
xmax
8 R: }6 B9 `) ]ymax: q. @3 ?. C6 U, L$ Z! s
global-reputation-list; Q8 L) o4 [$ L$ q* M

) e5 B0 P7 R, H  h9 K7 t: ?;;
每一个turtle的全局声誉都存在此LIST
* A( T% K- t2 t, vcredibility-list
9 J$ T& u& F7 q" m;;
每一个turtle的评价可信度
& M% J! n; K( Qhonest-service4 W! A. A) B+ w( ~9 I) F
unhonest-service- C  Z7 L4 r; h+ ]2 ?
oscillation5 t3 F  B" G: a
rand-dynamic+ H; O3 `% g/ ]) [+ `4 I/ b
]8 d7 o: D& ^! r8 g- |
- J% z" }9 ^- L! R  Y% Z- q( W
turtles-own[
3 `/ q; b% A$ y8 @trade-record-all
$ Z: q: e8 Y) A( z;;a list of lists,
trade-record-one组成9 I% O' c: I$ t% @9 T! P
trade-record-one5 ~$ E  W' e  R* u. \6 \0 S
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  H# }1 c: D3 R+ k! Z
) y: |3 ~8 a6 W5 A- 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]], z& \9 I- l3 U# Q# p6 b& K
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]. `. a6 @4 P/ F' p/ 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
5 m7 j3 R4 q7 k+ X& xneighbor-total5 x* O) _6 d4 R% D$ h
;;
记录该turtle的邻居节点的数目& A) b) B2 a9 d5 w1 l
trade-time
3 N! J- w3 p# ~% p5 q;;
当前发生交易的turtle的交易时间% C* r& \7 q& U: v- s8 M
appraise-give
# G4 W" W! w- \* d* N;;
当前发生交易时给出的评价
7 B' y* ^) E. d; w" V3 J7 dappraise-receive
$ m0 w2 A) _' z+ K. Z  f- r0 P+ \;;
当前发生交易时收到的评价7 B) p2 _0 ~4 K; x& s4 J
appraise-time! k# P4 ~2 G9 y; y
;;
当前发生交易时的评价时间
* ~6 \  s. H' i# m- u, n  ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, ^" a1 ^4 Y2 A) t& U) {9 `( X
trade-times-total' W8 o9 j# m3 f
;;
与当前turtle的交易总次数6 n7 M% j( u9 Q% N6 z1 H) x" o
trade-money-total! k( G+ m0 d" B# C
;;
与当前turtle的交易总金额2 V. q3 T6 m' i+ B4 W
local-reputation
3 O. k8 ]' J: \5 aglobal-reputation3 H. R' p4 X& |  ]0 I% J4 q0 i+ l: E
credibility/ v. c# q% S6 E' z
;;
评价可信度,每次交易后都需要更新: t# i6 f: O/ p  R+ w5 a$ `
credibility-all  U+ d8 Y# ~; T2 w& a
;;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$ _! [7 ~5 A. a8 h) A0 ?

) n1 M$ m, o# J- E;;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0.50 u6 m4 Z5 E( ]4 e6 ]! S! X
credibility-one
) O- @& r& r' _5 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
3 I5 }6 v+ O) L$ B2 O4 ^global-proportion( {1 M3 @# R. e! d1 H" ]+ D
customer% f9 A! L3 \6 D8 l: w% {
customer-no
+ x& q! s( i% _. X5 a, ]trust-ok( V+ `& ~  A5 l. k
trade-record-one-len;;trade-record-one的长度' m0 Q8 L6 c( _
]$ H, Q: w- L4 D* q
( K. O- q8 v: W9 l  K6 z" M
;;setup procedure: X; H! }# e7 N+ I" ]& P

5 n6 w: f4 e) ~, d3 ?% oto setup% H0 i' b. l, Y5 F

& ~# A2 M" q) G5 F& o/ jca
) B9 V) |. A! ?% B( Y" F. i' }

& K2 ]: t- ?1 V: Q+ Jinitialize-settings

3 o* U3 @$ k2 u- [6 M8 @1 V0 s& {4 ?5 `. l  O' }2 Z: e
crt people [setup-turtles]

6 `# Q$ \) I5 q) ~4 w3 X" s1 `* V+ |9 U+ j  V! V% V( F$ T$ x
reset-timer

  O; p" p$ r0 T. ~
( f, C5 n* N; n4 e* \poll-class
+ Q* T: K. i+ F' _  I# e
) `  ^: l* W% u2 M) }% x5 q
setup-plots
1 ~0 i9 x, Y1 n+ ?; f- f8 R

. p2 Q7 a+ D4 A0 udo-plots
+ W1 g* _* e$ R
end
" q# }- c2 F  \3 X+ k' r& ~" i
. T8 x" P; k1 T" dto initialize-settings8 S! h# x$ `- {$ H

5 A% u) o  P* g; s# W) a/ vset global-reputation-list []
7 Z, u# m' u! W" e' D6 h' R
/ u& K, J2 L/ G% w
set credibility-list n-values people [0.5]

& J' E& D! p# z) L+ w) o# |- {( m$ ]! |) l* `0 h
set honest-service 0
0 }, C6 A; G/ ]0 J1 H

5 V4 I9 t: y2 q  aset unhonest-service 0

3 a* z( z  J1 X' y3 F; b. \
3 k' P  m, z/ ]2 g  X% p: M9 `+ xset oscillation 0
# c2 O) c: }* N" H& v
7 P4 u8 X: M  b8 X. I( N
set rand-dynamic 0
9 }+ g8 D4 w& Y* u
end" Q0 e. P/ A, D2 O8 I' H' a
- B$ j. \7 j% t( G* V3 w# `9 e) X
to setup-turtles
9 }) Z# c# f( N* K) Fset shape "person"$ ]0 P5 E; [) n. }  M$ w
setxy random-xcor random-ycor+ B% f" r& x! ^, K2 r5 z, G
set trade-record-one []
9 g8 V7 B  D) L/ G# [6 k: B
5 [6 X5 [; h; H" o1 x
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 E/ l5 w# b5 f* [! J; M6 w! E

+ g: q- s1 \. J! fset trade-record-current []! i0 p* D# c9 F% N+ M3 s" F
set credibility-receive []
  V- s+ j& f) ?* Z; ]) F3 _' [set local-reputation 0.53 ?  |+ j" A0 R/ B
set neighbor-total 0
4 H4 @( e: E* Y( qset trade-times-total 0
9 u8 U8 a. j' i% I) P: }set trade-money-total 0: F: j& }; O0 ^0 X6 i
set customer nobody
/ L3 |5 J* D( [2 J& u( `4 [set credibility-all n-values people [creat-credibility]' b; o' f! ~5 y& i* r% q0 r8 ?
set credibility n-values people [-1]8 |/ \% l9 g$ x8 L
get-color
; O7 o3 U- n% {! ]( l( O

# B, Y( t- v$ x% Rend7 @$ E2 d+ W. t  M, D
% m4 i- v2 y. M/ y5 z, F
to-report creat-credibility% Y, S- _! h# r. e$ F, L0 ?+ t
report n-values people [0.5]" R, P; ~9 W# i. P4 E& B  f6 ~* L
end
# ?. W% Q( Q' b8 F+ z
. K0 _2 N6 M) j9 y) `  _to setup-plots# U& b( @0 T0 u" c4 ]4 v' N2 w8 j' W

' d* q' X) q) d1 L9 x9 v  i. S' Dset xmax 30
+ z7 c1 r. M1 m# E

3 L1 g3 {& Z2 |5 V  m$ Tset ymax 1.0

+ X1 L. X& W9 Z
* P. B5 ~7 D/ }, R( _. aclear-all-plots
3 a  s! h3 u: H6 {! P- y

9 ~6 T' k( [0 F- I( \setup-plot1
* \: f2 ^9 z! W! C9 d
3 X9 a2 v4 p: ~1 o' |
setup-plot2
  C  H+ s5 O7 ~5 l7 W7 x

/ s6 V7 A1 S3 Ssetup-plot3
5 }. d. F  A; K: {5 W. \" X
end
7 Z8 x; |9 g5 a0 K# U0 n3 R
3 L; ]1 y1 {( x# k;;run time procedures) e+ H" o3 ^$ l

: F3 g' p- X* o  e& D* [3 }9 }to go
& _. i. l1 n. B' h( k" T/ g8 A5 i" |9 I& v  [  A! I  y/ f( F+ Y
ask turtles [do-business]

( x# w( M8 z. l' rend' n0 `; t2 A: J( a# `+ T

/ b4 K6 y$ |1 @* |" P0 W, r  i8 Gto do-business
; e, Q* l+ k4 V$ v% ?1 P. j) S

) V6 q1 u; |3 U3 B% @2 }- I. z+ K  E' h% ?
rt random 360
6 W6 ~6 E( w7 D
5 {) E; |+ e% }+ h
fd 1
( j( T9 T% O: p+ H
6 V4 `) @; F; l' X5 w" ]& @. R
ifelse(other turtles-here != nobody)[

/ ^( B  w$ `. A1 L# l1 {; W3 v5 {1 ^* b- b
set customer one-of other turtles-here
% e- |; ]% s4 J' U

6 h" c* Q! l$ ]$ \* N5 ?;; set [customer] of customer myself

( G! @9 }/ }. f+ p# L2 B" H
1 g! E. _# Q; R9 Qset [trade-record-one] of self item (([who] of customer) - 1)
) C# p5 t$ c( H! f[trade-record-all]of self/ T+ J( _! \& m
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' d# j. q4 W5 }8 f8 f  ^
: M1 r$ R) G! F' F6 ~
set [trade-record-one] of customer item (([who] of self) - 1)
5 l; a. B6 ^3 {$ G  S6 L[trade-record-all]of customer
4 p/ q+ s5 G; i7 f% c; c- O

+ k4 D) w5 v+ ?: M: zset [trade-record-one-len] of self length [trade-record-one] of self
4 G. k) Y3 P$ S" G/ m& D9 x
7 V6 I4 W) v+ o/ M
set trade-record-current( list (timer) (random money-upper-limit))
: U2 S' E' L/ @3 B% }; \) K- ~
8 Y! ]6 R  l* V
ask self [do-trust]
0 k- a( D5 u2 o$ v+ ]& F;;
先求ij的信任度
+ V9 i5 Q$ p/ v' |+ F; B  ?8 {7 v" c
if ([trust-ok] of self)* t( {0 Y' O, t- x! L) U
;;
根据ij的信任度来决定是否与j进行交易[( |$ G8 n% Q* u$ y6 ]2 n5 u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 E8 ~  e3 M3 B8 a! j
$ _- Y* h: E, \2 g/ ]4 n
[

0 d8 T" Y; J, J8 p, ?) D1 P
1 a2 F; o& g; Y) j% c. x, \' Ado-trade

4 A& Q# D- d: y; l( t1 @, k. q" \* I# v  N4 S9 A- `$ y- T3 s) E
update-credibility-ijl

+ Z0 B* c2 \4 R. x2 v7 H* ]8 z$ Y0 d( A3 F0 @8 z
update-credibility-list! L( T* e  Q1 Z" O  \7 L

; E' \6 @% T: k7 C
' U. ~& P$ o7 m" S7 @" kupdate-global-reputation-list

4 d( ^% s2 Z3 ?0 b$ x. M+ t' L$ `: G1 B0 X( B$ s, H4 P- Z7 |
poll-class
1 k# x" D; @: S/ V. S
8 }6 }; P2 q, J  w- i0 U
get-color
7 i. n; P# B& P4 w

6 K9 G. e4 y9 X]]
: }) I' ~2 B  L  T( x( e; R; O
- }5 L; w+ G) d4 W% h;;
如果所得的信任度满足条件,则进行交易
* u2 i$ q) T* f" B5 q% u5 f1 N9 O- L2 R3 U# b- n1 n
[

4 H& D8 {' ^, }+ b! K& m& o/ ]* D1 o& S6 n( @1 |/ a/ N; O
rt random 360

2 k. M( ~5 m' ~0 a9 ]! i0 q6 K$ b- w6 \
fd 1

7 A9 U6 q' w' b
7 ~! z+ D, ?; B! g]

, u+ x+ Y& B% p3 Q4 K4 X7 x4 S# ?0 M
end

7 |( L7 F1 T" D
% h! r' Y8 a: X; M* ?9 A% Cto do-trust * N8 t; ]; b3 D
set trust-ok False
" B+ C* S8 {9 k( V
( D" q0 h, d/ {5 o$ K

; ^2 _- e4 ]' {/ R+ \let max-trade-times 06 f% v: s% l. a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! Q% s% O' E2 [$ u+ P; z3 P& jlet max-trade-money 0
1 ]) {  X2 F3 C$ p1 tforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 h7 }9 ^4 f4 n
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  \" x8 o" n; ^5 r3 f
# z; Z! s# O5 n+ R
& m) y3 [- a4 @" l# y
get-global-proportion
' w6 t+ Z9 W; G; L6 s: c( O6 ~+ D% u5 Rlet trust-value
) A2 ?( H& T2 Y9 H- l1 ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; g/ ?' c7 X4 B9 \6 W1 M
if(trust-value > trade-trust-value)9 l( k  g8 I8 K" L
[set trust-ok true]
; |, R# x9 }; Y7 U, c8 [7 Fend+ d" m/ {9 b; L4 U8 W
$ D& h% R' U# }. m6 d% J4 j2 Q  @
to get-global-proportion
) X+ h1 T  u) qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- O$ i  M& l( ^8 [8 ?) E. O
[set global-proportion 0]; n% R! N) w3 s* ~$ a. z6 @8 S
[let i 0
7 @3 _+ s. m  J0 E" qlet sum-money 0
! m; u0 S# }( L% o, j6 nwhile[ i < people]
6 P0 ?' L7 ^3 C3 i[# \2 T0 M; E' Y, T/ n- k
if( length (item i
3 [6 o! m; R& L9 T5 z( D[trade-record-all] of customer) > 3 )

3 y3 A+ f" y" a$ Q/ u/ T[
; r- }- N6 G0 s. X: Hset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. h" I3 ~: c, k, S* k& X/ b]) `; j7 T( i0 q7 c2 G: G1 ]
]& Z2 v5 ^" ?0 H4 ]
let j 0
. q. d+ t* Y7 D4 Blet note 0
! C+ B) J$ {/ d( \* N) W% [while[ j < people]" F( A  k8 c& r7 C% u% O: h
[
$ w( M' E* K, a+ f$ o  M) T3 H6 Aif( length (item i; j5 Q  s2 O: v; y0 ?
[trade-record-all] of customer) > 3 )
1 T" h5 G# X5 B  R3 @1 F; K# g
[
4 A9 l' i2 J3 j! y" I7 Mifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 O% X* y' r: a: D+ e* l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& ]. p! r1 V8 e7 R1 ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]+ n9 d0 Q% y4 g: M
]$ \+ N8 W# C! q2 H
]
0 F0 C4 N& n( [$ ~- x! G: u/ H( gset global-proportion note) u! R; R$ E) A( D6 T8 E
]- Y2 d! F9 Q, B( [) R) A
end
: t- T4 ~( V* C8 Y, [1 r. v
( c' d& f3 h0 v0 [to do-trade! ?: P; G6 q' e
;;
这个过程实际上是给双方作出评价的过程$ E. m5 V: G  ]1 T' P3 @  G/ r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 M  K% S" Z5 |2 x
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* n4 q2 \# j& u, @2 |+ F8 \set trade-record-current lput(timer) trade-record-current7 [% M+ O* j5 f8 s  G0 _1 I
;;
评价时间
6 F# m+ e) G3 u0 ~+ K) Hask myself [
2 b2 v0 e: @5 T- j9 Vupdate-local-reputation
( ~  g0 v, Q7 P6 m7 C' V" Wset trade-record-current lput([local-reputation] of myself) trade-record-current
4 ]# R3 R4 T2 S/ W: ?% U' U]4 Q+ `7 J# P! }9 _  b
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
8 Z, S4 _) Z3 q- y0 O: O0 i;;
将此次交易的记录加入到trade-record-one
6 G2 ~% f6 X3 t  S* S. hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)3 b4 e9 X, y  p  R5 @
let note (item 2 trade-record-current ): D8 _) `3 n* _/ G; s: ^) T
set trade-record-current  D4 L& O5 `( P
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 Q* p7 `, C# W9 G& e8 g  q
set trade-record-current0 W& I# R/ P- N5 A
(replace-item 3 trade-record-current note)" N0 S2 q: M5 R8 U, k3 ]0 {
6 G/ n3 R, M- V3 P8 N
; E; b' v) }, M, `6 m
ask customer [
  p3 R" I+ G# Q' [+ H8 \/ o. |update-local-reputation
' U' q8 o. R6 A3 \set trade-record-current$ n; g. p9 O: P" _/ S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
7 a5 U9 U% Q9 L. h" V
]
5 l" L, E  G: m! t, z/ @+ m& [& _7 t% f5 I! G( n1 @; @
4 l3 S7 C9 l* u4 d8 M8 v$ I. w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- F2 S: J1 B, L3 }

$ o5 L4 M# D+ }' ~9 T; x: p: Oset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); _; b4 r0 o2 k0 j. ?' G
;;
将此次交易的记录加入到customertrade-record-all
. w0 [* z0 e- I5 p) iend9 \5 G9 g# H( S2 F. V" t

0 L7 M$ Q$ Z; d+ n6 z: f4 v( Nto update-local-reputation
* _! E! C0 S0 O0 k# G8 xset [trade-record-one-len] of myself length [trade-record-one] of myself
4 e) q: ]0 _4 E/ R1 X- ]/ p5 `2 s8 {1 P) E+ p6 ^
( Z) }  Y7 ~5 A
;;if [trade-record-one-len] of myself > 3

, o6 `6 @1 b6 B  oupdate-neighbor-total
7 `( I$ h  I" y! M8 c3 ^$ P;;
更新邻居节点的数目,在此进行
/ I* I9 Y; u  }) c; b: Jlet i 3
' E; P7 @/ \+ ~: T) B' vlet sum-time 0
1 O7 Y! B8 ~. s# dwhile[i < [trade-record-one-len] of myself]
+ m9 W9 o' q, b' }[* H4 x! a; |  j% l9 Q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ }, n0 A7 V. e. z( L' }$ H5 O, [
set i
+ o, X  I' }9 Y! N9 P7 R& _$ Y9 E( O( i + 1)
) i8 g; W+ V$ ~4 }% s6 M# `6 K4 [/ m
]' q% W. z, u: u
let j 3
( B6 S( w* H* vlet sum-money 0. `8 s  B- B" f$ b
while[j < [trade-record-one-len] of myself]
/ _' O# x) M3 ]5 @" Y0 G[6 I1 e1 N$ {% X5 E0 X
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)3 J* p6 H  X. h. |2 f
set j% O* N1 `/ N! T4 o
( j + 1)
: h% X- S2 ~; B$ L; G3 Z+ u4 ^) L/ r
]
  ?* B! i" w) c* {- S" Z, ?/ R- A& \let k 3( X9 Q, X. b+ w" P$ ~
let power 0) l3 B- A) d6 h$ x5 U6 ?' g$ }0 W
let local 0
' Z/ g3 {& s; d* ^2 R( wwhile [k <[trade-record-one-len] of myself]5 O( n# Q( y& W( n! t; i8 v2 D( E
[
1 D7 ]3 N1 ]% O  U( Kset 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)
/ y4 K$ B. P' T0 [) r* V  I1 ^. L2 v8 xset k (k + 1): Y; v; A$ P# N% a. C
]
+ Y! d! c3 I' A5 U1 Gset [local-reputation] of myself (local)
6 f$ g$ e% ^. B+ Aend
) ~" q5 \3 ]# e6 b% @3 U
5 E/ e. C  d8 k# y: Lto update-neighbor-total
2 ^$ p2 t: ~# ]$ R- x
" D9 m2 h( K6 P4 C9 m1 yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ }( ~$ n4 X' @0 O
2 h/ S, p" Q3 P+ Z: ?8 B

) U9 R8 a( I) P- F* N3 H7 vend/ q/ Z/ o7 c3 z1 V# n% Z. F8 W

- v! ?2 g( E& U# Q. zto update-credibility-ijl   c) t$ ?' Y1 C, a# w) Z# M3 {) p

$ B; ]4 o/ o! T! E3 q: `% R;;
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。" j9 K/ l- ]$ X* Z  ]# Z
let l 01 ]3 l! u' S- ~% |+ e
while[ l < people ]5 d7 X4 X, X) e
;;
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
- S" l9 m7 ]2 ^[! h8 i) }5 a; X  k& [3 B& y. S8 ^
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 q& G! I! ~& G  v
if (trade-record-one-j-l-len > 3)
1 h) W2 @) T5 X[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
/ Z$ G  H& Y! `& V3 @let i 3
# g' V+ q% m$ q4 F) O# J5 e! P7 {. A5 clet sum-time 0  s8 p9 i1 |2 i6 ^9 q5 m
while[i < trade-record-one-len]$ [* f3 W  m2 I8 ]9 Q7 {
[/ J  F9 c/ P( }: ?
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ): P( @9 `* m$ ^$ j3 l- r
set i
& S) s# j3 W- V& N! A( j1 D, H+ S3 C( i + 1)
1 ^: t- L& K6 M2 z$ `# p
]6 ~& q+ ?- Y3 ]
let credibility-i-j-l 09 [" J  P& `4 ~; z
;;i
评价(jjl的评价)& w4 d6 a. w7 b: G1 j* w( s& _$ ^
let j 3( A6 F' `  h' |: o$ g& o+ n3 w
let k 4
7 ]$ W$ {! Y4 J* xwhile[j < trade-record-one-len]; @, D7 C, \6 g& o" t, ~. Q1 C
[6 F" m4 m. c5 M* m. i
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) A" ]) b; I9 @' Z& ?- e7 a2 |
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)4 q( f/ h4 ]6 Q; g4 S  l
set j
9 N5 t3 G4 A* x3 X1 p# r3 L( j + 1)
6 U/ V3 {( i2 d" Q
]  x+ r6 D' {" K0 |
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))* }6 K: h4 X! p- V) K5 v
/ n6 C6 {9 S0 C/ i. U$ r; H" m# g

7 t& F; p5 x, f( z9 |+ I" q) z- ]) wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% q* J3 g3 `2 L$ z. I) @6 c4 U;;
及时更新il的评价质量的评价; J1 P2 N7 {" M; i
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" e, _' r5 H, Y0 s3 k
set l (l + 1)3 g( C+ p# o, z
]* R4 P( S! K' q/ |
end
8 s/ I  x, |/ N" y, G
/ S1 G) G( C9 U. x/ \to update-credibility-list
7 B9 E3 H  P4 s# R' \3 ~+ k  v. Zlet i 0
/ u+ x8 L7 @. m6 cwhile[i < people]# w0 P% A2 D  ]# E# ]: G
[% |. g+ r  S/ o3 q  \# o
let j 01 m9 o+ q' y4 z3 ^6 H' s- z/ E; p
let note 0
1 a# b- b. }. q. ]7 Rlet k 0% [/ |# d" C& D: i
;;
计作出过评价的邻居节点的数目
  i. y( `! }5 b4 ~8 Cwhile[j < people]: y4 E- `% M0 P0 m* r/ E
[5 O5 ~* C* n) R* u9 z
if (item j( [credibility] of turtle (i + 1)) != -1)( n7 k# ^" o# e
;;
判断是否给本turtle的评价质量做出过评价的节点
( v% R" Z' A# l4 X7 ^[set note (note + item j ([credibility]of turtle (i + 1)))
1 |9 J. O5 R0 p- Y  K;;*(exp (-(people - 2)))/(people - 2))]

9 v. Q2 O9 _* l4 N0 Lset k (k + 1)! q- i  O% h1 l/ {( l; N$ m0 G% c
]
+ ^$ I0 N( M: B+ |& hset j (j + 1)  T% h  |% X. a6 k+ c- ]$ a3 e
]6 c" j/ \- C# n2 P5 `9 W& p0 j
set note (note *(exp (- (1 / k)))/ k)
3 F5 ?$ }6 X" oset credibility-list (replace-item i credibility-list note)& w; W( o# E# d. F- {
set i (i + 1)
- C1 D4 o- {7 v]
) c4 w& ^7 R; H, e2 Kend
# J) T; j/ t0 D2 ]& o$ k( t$ j5 Q+ ?2 d' j
to update-global-reputation-list
$ Z" Z9 v" o, b5 O: `let j 06 v' H4 g5 r. G" M; K& H
while[j < people]
" Y0 W' |$ G6 e1 H/ S& Y( W[
8 i9 {0 E* i) k+ J+ Z* ?let new 0
7 s" F3 l% f7 P7 e, I;;
暂存新的一个全局声誉4 d" n+ m2 }5 w) G+ K1 @: C
let i 0
0 p) @7 Z" C2 r5 q" N& [let sum-money 0
0 a) ^& r9 C( w* L* G6 ]6 v, Nlet credibility-money 0
. d! {, v* m# ^/ Rwhile [i < people]1 N4 r" _, t$ ~2 s6 n4 u: C. P
[
6 H  g/ a" z, ^, M0 k$ I/ vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 ^9 o& m1 g( Yset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- n3 r0 y$ B) C8 ]& P" Lset i (i + 1)
% ?, {) V# B! I- N]
- ^4 J/ @, ^. ?4 O3 Glet k 0
3 X( k- b& ]  K0 wlet new1 0) C/ Q( C" M& b' T# p
while [k < people]& J1 I1 h) ]' H
[
: ^$ `% i' e# O. v8 k* `. Zset 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)
. V2 I+ e, R/ H# e- V' \set k (k + 1)
- k# D$ n5 }. L# D7 w5 ?- W]
) j: }8 w$ Y; M: D; yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 y0 m, l# D% k& N, K, k
set global-reputation-list (replace-item j global-reputation-list new)  z# n1 e, t. ?) ]: E1 R% G9 o
set j (j + 1)6 M% p- _9 R9 P1 @
]8 ^3 U7 q1 {9 x3 Q1 H/ b: m
end
1 E7 R7 `6 @  B4 ]# i9 t2 ^3 C  l4 G1 L9 `7 M

+ A- O/ U9 w; N1 Z4 ?4 U5 Z6 ~' ?" i
to get-color
+ {3 W. f% q8 A% \; o( A' |
3 F$ U' `, T6 ]9 O  G/ Pset color blue

$ r# N  l4 \1 g- i3 _2 i( l3 W7 @end
% N  w# t; t, j7 Z+ n3 s  }6 i8 R  O" K* h8 }! S+ }7 _
to poll-class
# l; M2 x0 ?; n8 d) I1 Tend1 Z7 O  g# C: j2 m. d+ C9 w4 I

8 z% }% ~+ u0 W" p* @: xto setup-plot1
+ ]& u" |& B5 N$ s$ x1 t6 ]
- D' o: m( ~$ u" n) Qset-current-plot "Trends-of-Local-reputation"

0 ?' q  u% [  U5 j; A3 _3 v! {- i
/ N6 p( j' V1 L, u+ ~* s- Lset-plot-x-range 0 xmax

& A  L  \& s' ^( a2 I! M5 d
; J. `6 Z3 C* A4 n$ X9 d; }8 V! Zset-plot-y-range 0.0 ymax
5 U; o( `9 V7 _9 b4 k7 B
end
4 t7 p2 i8 V3 k/ L; h' p# e' i: O1 {. u/ `( i
to setup-plot2
) M1 A+ X) \6 p+ K: `$ t
1 j+ }/ |0 w1 {! d' `" H& ]3 d/ B- Tset-current-plot "Trends-of-global-reputation"

3 p7 H7 q: z6 l# F2 \" @8 @- ?+ G; o+ ~( m( t' l
set-plot-x-range 0 xmax

, z3 S% B8 k2 J* s! q2 K8 {/ N( l  h5 y  Q
set-plot-y-range 0.0 ymax
8 i% G) f: K- k- j! j
end
8 L6 }; I0 k0 K' f& c: ?
" ?6 @* f, ^" i" t- B  p$ Lto setup-plot3
2 Z: Z5 w6 j5 Z! H/ H& T. ^
! |$ |4 C& o4 Y( _) u9 oset-current-plot "Trends-of-credibility"

8 m; \8 l6 E3 A; [/ o3 ]+ c. l+ d" R; C: ^
set-plot-x-range 0 xmax

& G- {0 N3 e& A% A) T2 G3 q) k  i/ w" H& B! w4 w! k3 n
set-plot-y-range 0.0 ymax
3 e7 Q- D# _, c8 F. O8 M4 ^
end& H- k: g1 \( y/ f
, L% ]6 Q% |( O: N5 c
to do-plots2 ]) q4 O& L8 j4 I; k% R2 C
set-current-plot "Trends-of-Local-reputation"( y' o2 }+ |8 q+ ]/ R: m
set-current-plot-pen "Honest service"
  t! m9 {" d! U2 D8 N5 h$ z4 Eend4 h' x5 F+ l8 P
7 Q; z3 Y7 O! T2 X
[ 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.
* J  P5 X& X( {/ ^4 }# b* Q  L! Z. X& B
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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