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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:
; f% v/ s5 j* {8 O: J+ u. mto do-business
" G7 q7 Z* G7 e/ k( W  {6 w rt random 3603 H2 R- ~' W) @
fd 1
6 N8 ^. E6 V% H' j& U ifelse(other turtles-here != nobody)[
7 K  u. {' C( C   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 S( ~% I4 [$ w* y4 V- b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) h9 \9 ?! \3 t3 Z" s) _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% S5 J+ c. L: ?7 h- u' |1 T  p) S
   set [trade-record-one-len] of self length [trade-record-one] of self2 O* K. d( g5 ]$ `5 t+ x. A: _, Y
   set trade-record-current( list (timer) (random money-upper-limit))8 O1 I$ \; {8 e3 N; q

3 g9 l! [# |' j9 p, X; G) i& s问题的提示如下:( k# |- M1 j4 g: ~2 j
9 K* L9 ^0 V& P! J2 C
error while turtle 50 running OF in procedure DO-BUSINESS
7 I) k- r) C& a7 @+ `) C  called by procedure GO" S8 l. V1 g6 ^) L: w8 c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 X& U: \& p5 f" M6 Z
(halted running of go)
' ?8 r2 ]: C$ f4 n% K5 L" v
# @5 E: a# e9 a& e; R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~~
* a! \' z) G+ S9 D3 k* r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
  I0 H5 _& |; s0 {globals[  o1 Q6 [' S( ]/ N9 w1 V& @
xmax
/ J+ F9 e+ W  }4 ~ymax" e% A7 C' g8 q' \4 l2 r# x; @  U% l
global-reputation-list
# C: S2 U( c' s
8 h% p* \. X. O0 k0 L& _$ r3 h+ M% _;;
每一个turtle的全局声誉都存在此LIST# p$ d$ u" ?! |
credibility-list
( C, @1 }' Y# q! G;;
每一个turtle的评价可信度
! A- J' L5 p2 n) L, }honest-service, G' ~+ a9 `/ j- S6 O. X
unhonest-service
/ W& T5 ?2 n/ \$ c' h; y# m! G$ u* S& voscillation
" a$ A9 R+ {' b$ A6 D6 p  Xrand-dynamic
& r9 O1 h' O2 K! g% R2 z/ O]9 P6 m. e4 ^3 y6 Y1 [3 E! ?' ]
2 m3 X- G$ r+ L+ T+ a
turtles-own[2 {  l1 F8 ?0 N  C6 x
trade-record-all* P9 I/ d/ V  ]# `
;;a list of lists,
trade-record-one组成* O- N$ m* {+ n  E& s
trade-record-one
" r/ l# d5 r* M+ N2 W6 ?- ^' 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* f+ ~/ Y+ w. G# y) Q) ^

9 s3 p5 J# I2 Z, i;;[
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]]
% m0 V0 n& \9 M7 @" C# r1 mtrade-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]
) i3 G# s% r- z7 W* `, c7 }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" X; \8 a2 U$ T. q& g' B) n. B
neighbor-total
7 ?5 y7 V+ R3 v$ u4 a;;
记录该turtle的邻居节点的数目
# V6 f0 \2 {) u# i9 Ltrade-time- N9 {; ^+ y3 B! X  _
;;
当前发生交易的turtle的交易时间& T$ e4 L/ o6 l2 E( Y; O/ r# A% ~! M
appraise-give
( r) \. H7 x* s; h- w' u" I;;
当前发生交易时给出的评价+ I/ y/ j8 b4 }- {& f' F$ ?
appraise-receive3 e3 C8 k1 k! j2 M( N% T4 \. [/ b. v
;;
当前发生交易时收到的评价
3 ?6 }1 h9 ?) O  i  i2 Happraise-time5 m8 C0 c- y5 h5 K3 j& j" `
;;
当前发生交易时的评价时间
) C& C  ?2 Y/ {- D5 S. Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉; q+ f' l1 Y; q: w" \( i, P* L
trade-times-total
+ ^# V( c0 C6 r& Q6 ?7 q3 v) {;;
与当前turtle的交易总次数
/ W+ x+ U+ _1 otrade-money-total% ~/ m( v3 W$ z: \" L+ o* ?
;;
与当前turtle的交易总金额) m, s& w& E5 M! D, w" U# ]* \5 f
local-reputation+ }; [  n. C5 r0 a
global-reputation0 j) o6 t4 L' e5 q
credibility
. s8 E/ x6 T: s5 H/ K- b& W;;
评价可信度,每次交易后都需要更新, d+ S9 Q! f4 `: y2 R
credibility-all
9 n5 b' W2 t7 J- h/ z;;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- t: b7 W" j6 D) ?- ~$ |
& ^% h9 ]5 ~8 z) f  V9 x7 `, {2 u" Z
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
- [/ P9 |7 S5 b' q0 r6 n* f, c2 c) Scredibility-one( h& Y" V9 m* a# w7 w+ J
;;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  ?5 ^2 }6 B! a
global-proportion# i: A$ n5 b% g% _; R4 N
customer0 b0 P9 p6 t0 l. _6 s
customer-no
# h0 G; q9 j6 Z0 z3 J) Q2 s% ~5 Xtrust-ok
, i) j, A( x0 [* vtrade-record-one-len;;trade-record-one的长度: X( _' Q7 }, @3 h. _6 H' {4 O) ^: n: J
]
  E! e0 l' P" K  x$ K1 R  ~. M' `! L5 }1 ^
;;setup procedure7 P7 X' O# I. W  E0 R& Q4 B

9 H( q5 a( j2 h, b5 P& v0 t- x5 Lto setup1 f' G; R0 O% k2 `$ t
/ m; N' D8 a1 J. L
ca
% C$ W: \& A+ G1 U

+ O* m9 R" B) ^: Y; _8 ]initialize-settings
/ |/ A2 V* U, V* _) |8 G

! p; D! P6 U2 c2 |( Rcrt people [setup-turtles]
& L3 w0 k' z" K  j0 S! q

. d9 y. `( w6 _( i7 o; Rreset-timer
/ F5 F3 _+ ]# |

+ l8 r1 O# C0 A( K8 Npoll-class
$ w7 k; b0 V/ b- R9 s. G& h
. K) L3 T0 \, E: \
setup-plots
! F! b) ?- ~, f
0 I1 B0 G8 x8 L* N! |% I+ }
do-plots
: O( l9 M. v3 K+ `5 B, W( _
end
4 p8 }* Z3 c# H7 q4 w
. }7 [& A' b8 y5 u; gto initialize-settings
0 y9 g+ q, l2 w! J& k$ Y1 i( Z0 G4 g) c; `% T
set global-reputation-list []

8 k* h4 w% p& c+ p, A1 g: w+ a  `! f6 U5 p4 m$ j. C3 e) h5 Y
set credibility-list n-values people [0.5]

5 `3 B4 Z. Y8 {0 \
7 c9 R. d  q& a6 Aset honest-service 0

& Z2 a- Z/ I- G: {  K% H
( M$ O8 W8 J& f( {- n% M2 |  Kset unhonest-service 0

2 Y4 U  a+ E8 ~, G- g( }
: B; }4 q# z! I% R& C( M  l9 `set oscillation 0
5 k5 {7 S' J/ O7 u# U/ R

8 G# e/ {1 u' {6 o  Bset rand-dynamic 0

7 J" q1 d% S8 r4 p5 kend
1 w$ d6 t: h8 x6 D( I9 W8 [! j
& p" Q2 j1 g% Xto setup-turtles
/ R! `( m0 Y5 ]2 [9 Bset shape "person"& J( ^2 ?9 T) F' c+ {" [; Y
setxy random-xcor random-ycor! c# y* A: p6 w. R$ ?5 U: T
set trade-record-one []
( w  x( a* {5 ~& c* j( l7 I

; N+ D) s$ T$ E0 F0 g. Oset trade-record-all n-values people [(list (? + 1) 0 0)] - l6 u+ w1 a' W6 R( L: n' x0 n
( S; u, i) \* ~6 o
set trade-record-current []
$ P, [1 r+ H: S' kset credibility-receive []
" f' ]8 p4 S7 H+ w) p2 `  Eset local-reputation 0.5
3 m5 ?/ q& M0 _set neighbor-total 01 e7 f/ @) ^6 ]  T3 q+ T# K
set trade-times-total 0
1 x# o: |) O# N0 W8 qset trade-money-total 0
6 e7 l% ?# n8 x3 Wset customer nobody5 s  l1 x# i" f# T3 y6 x6 G
set credibility-all n-values people [creat-credibility]' e& s' d( X- u+ Z( d/ C) M+ v/ h7 W, W
set credibility n-values people [-1]
6 F! h; ]5 P# s3 \' d5 _! \get-color* l; a. |8 B+ a8 U2 z; I' k& f
7 c" S! Z7 ]( D0 e
end, x- c2 b, y8 `0 ^4 D& L
3 ?* _* O+ z1 q/ `' ?
to-report creat-credibility
, ^; x3 Y) U% i% A* T: P! }report n-values people [0.5]! V3 ]- Y& y; h$ v
end
( a) a8 y9 q+ H* d) l. D+ m
& m7 m7 k! A3 Xto setup-plots% s$ s2 L; a( N, h8 h- A
3 D% R- Q9 D9 r
set xmax 30

' A) U' ^1 M( B/ \! B- n5 E) Z8 B9 A3 Z' m+ J" ~' K
set ymax 1.0
8 X$ n7 _6 i5 I* z! a" M7 i

( a! `# \. A. A3 u- ?clear-all-plots

) p7 o* n& ~1 q: d  P) c9 J  Z$ K$ [' K" B
setup-plot1

' t% L& q& X$ {9 V2 E% x/ O
7 }  N, C% e. W/ y+ ysetup-plot2
+ Z9 @) `' V7 _% s1 _+ m/ b. c  b
* p) W& |' G1 y
setup-plot3

- d; \7 a. U7 W  o. g3 Xend$ }) Y; |* v( L% J7 M! s7 G% K5 P$ s, k

& R6 F- R; v/ l  A- {$ o* e;;run time procedures& ]$ C1 F2 P! R5 z6 o

4 Q9 A8 K/ Y0 O- @6 Z, Sto go
" @4 t6 A1 ~# I
7 C- }- ]# [$ [: ]8 cask turtles [do-business]

+ y& E8 g  T; g* T1 W! Mend
" v# H8 ^: [' f% k0 _$ W, N) J" |3 }+ S0 ~9 h. w7 s+ Y2 r+ D/ q
to do-business 6 H: z% w/ H) }7 x  e* D

. O* Q, F5 p8 U1 {. |, b
/ w$ u2 N2 x9 D1 A+ o. O& Vrt random 360

% A  y' B+ |- F' E# e$ G# W4 H4 E. q' f" }2 a% ]
fd 1

! ^8 y: w1 Z  V: Y) A# [9 S3 }( _; C0 p+ X" Y5 l8 |: a
ifelse(other turtles-here != nobody)[

- u; ?- P: _2 A0 ~, Y- ?* d" Y2 g/ f% S9 F& C, @; O4 r/ n1 J6 b
set customer one-of other turtles-here

: g- o$ f  ^9 R8 G
: I' x: g$ r8 n) W( Z;; set [customer] of customer myself
% x& _4 o* G% B$ r; S- Q! ~+ n: Q
0 v% {. l# ?: y1 L
set [trade-record-one] of self item (([who] of customer) - 1)
, X, I/ z. D7 t[trade-record-all]of self+ H; V6 F1 E$ J% [- W  Y. F9 G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ e/ F( t5 w$ s" L! ?8 H7 Z( H; q) ~5 V/ ~( u" e8 Z
set [trade-record-one] of customer item (([who] of self) - 1)
( C5 k* Q4 a8 u% p" g[trade-record-all]of customer
$ c$ z2 H. o, [. O( J
! W9 `; }/ S4 X* i9 a2 Z! \7 [
set [trade-record-one-len] of self length [trade-record-one] of self
6 E$ G4 m* V& w0 D7 C) I

' a" Q# j+ `. y3 F+ x$ |set trade-record-current( list (timer) (random money-upper-limit))

9 H9 f/ w! R, e1 I0 w) v& C6 a$ G' z. @) S5 R
ask self [do-trust]
& k: t) b/ N* e* @7 T;;
先求ij的信任度
; h6 o- x* x0 A& q' C/ y9 q8 K0 S3 L9 Z* R, N  B, ~. s
if ([trust-ok] of self)% P4 P8 d) _- E) h# e4 b
;;
根据ij的信任度来决定是否与j进行交易[5 ^$ x1 s, r  o- V* X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  t- U0 f  q3 |

, g1 `- G, e8 J' F3 x9 t[

  n; d9 ]; T2 m. C/ s- g7 y, X
7 @* C. S# H# r1 L1 N! V' ~( mdo-trade

  \, Z- d: t( Q; R# Y/ h4 J9 J/ Y. t, C7 N
update-credibility-ijl
8 F: g" I- L/ }6 F) r" e0 R

: c5 w( _2 H) v+ t' h, }update-credibility-list
& x$ p& m" K8 x

0 G5 ^0 z7 c2 v. a3 F/ c2 {
2 g3 j( q+ U  `' R6 [update-global-reputation-list

/ f% P" M, Z# _: ^, D# T( U7 P% I
poll-class
0 w! \* @. K; H, @+ G. ?
) q2 R+ A3 K& X' T7 n
get-color

& N1 u( R; k( I! _- m8 g+ ]6 i  Q
. n' n- b% ?0 \9 n2 Y]]. }  I, J' _4 L0 H) z1 j
; R& k4 F9 Q+ n6 ]
;;
如果所得的信任度满足条件,则进行交易
0 Y  Y. z+ _- K9 Z1 {6 j% ~7 [# d/ A: o0 J5 _5 p
[
8 q2 X- O4 b4 ^7 u! p

) \- o  R9 J# z4 j$ b  Frt random 360

6 D* o( F) y3 |3 M: @& P# B7 a& \1 R7 \. T6 T8 c4 |  c& `; e5 h
fd 1

7 P6 @0 y5 ]4 k5 B6 p9 W0 n# O, w& R) q# Y2 l8 }1 Q" A
]

- f! c" r) e8 W0 t9 k: s/ E/ O+ i+ J$ N' K6 w" q; p
end

% Y5 `3 s( ~4 H' U3 o
5 B" r8 M2 E& h5 t  p# ^to do-trust
9 B* ~" y) v+ k) f- Jset trust-ok False
/ _6 m; t8 y  }7 p* C# O! L$ X+ t* h# |3 t4 w
- v' [1 ?7 E+ m. ~& g
let max-trade-times 0" W/ x5 T: v% x0 S4 G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( z  f* |0 [1 Z$ j) E
let max-trade-money 0
, j( Z$ `4 F% r) [# t" a, bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 S8 g- C- w: X9 v4 w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 t! n) x! |  x: {5 U8 H* W

' ^2 G! @9 q6 B) o2 {

  G9 D+ @3 ^4 ]# y( f6 A5 `  d2 Xget-global-proportion, d0 P+ N# a5 G1 R1 I3 N* w" G6 E
let trust-value7 l% E# L) K1 q  }$ O$ O: d" H
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)
5 N1 Z* U/ H% i7 B. y
if(trust-value > trade-trust-value)
7 ~) z' o! W( V' b: k0 d, C[set trust-ok true]
% U8 P0 p% f4 m( z2 a- rend, T1 Y( u' A1 g$ E; E% u* u

# Q, H+ ^9 t0 l2 A7 s1 @4 Ato get-global-proportion
: K' \, C* H/ u* F5 R$ x/ ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 G+ S; @  R0 i8 w
[set global-proportion 0]; }; K4 T# y+ T+ ?3 O
[let i 0, A: N. I# ^, w" }; l' d$ C
let sum-money 01 u" b7 @( n4 ?5 o3 K% }
while[ i < people]
8 v. K2 d3 `. b. h3 _. A[
8 ]( s' o5 ^3 N* Mif( length (item i2 ]9 c$ O/ }: o- r! a6 `1 ~/ C
[trade-record-all] of customer) > 3 )
' q. F4 B7 g% M- `8 W3 b' w
[0 V9 I0 N) e9 S6 G" P& P( N
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))% U; K/ e* `3 e3 T1 x' m
]
2 r, X+ V, \/ f* d( @3 S]
: ]3 W; ]; u+ s) ~let j 0  u% Y& Q/ m9 l$ b; A! Q; Y, I
let note 09 X6 P- V4 \" i$ f( q( i) x
while[ j < people]
# ]/ v, L. ~& p[! j7 B6 b- L8 _' x, U
if( length (item i& N7 y1 q% @- Q7 z
[trade-record-all] of customer) > 3 )
8 e7 U6 ~. m5 Y" f/ J  a
[
2 g, V- ^# e9 j8 Q; W& @ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), ]9 `, z2 Y) V8 s# a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# D! L( b, D4 P" s# i* G, u8 p; S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 Y3 o  `  q7 X. J$ `& w8 V3 ?
]
% {- S6 Y% I- Z' i3 p: Z& U]
- Z: Y4 n5 `! F5 r6 F2 E5 z- bset global-proportion note, e3 K) W8 }+ N; k* U: a6 I
]
! F2 S7 t$ q4 ^) K0 A2 O. oend$ x! K/ n# F$ q) F8 |/ l' d' Y

$ Q8 ~; R/ w; i9 v1 ^+ y0 k' Wto do-trade1 L/ d) v" f, m. {" r
;;
这个过程实际上是给双方作出评价的过程; a+ ~0 F7 P0 D1 `
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: z+ H: D4 w7 K! S0 qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# V) m4 a! \7 Z& rset trade-record-current lput(timer) trade-record-current
1 m' J+ K8 Y+ o;;
评价时间3 G8 x# D+ a# @: Q9 X( S; ]& m
ask myself [+ A/ H+ O' g; o' Y, Q( ]
update-local-reputation* k3 [) N3 E3 F+ `( X: i
set trade-record-current lput([local-reputation] of myself) trade-record-current9 A. J9 ~& w& m$ B7 ^3 ~" Y
]+ B1 ?5 ?$ W* b& u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" y8 A, G, d+ S;;
将此次交易的记录加入到trade-record-one+ Y$ }# I  {# `2 f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ X& m3 s; ~$ F' v, \* @8 _
let note (item 2 trade-record-current ): @1 L! U; T- u, Z. c
set trade-record-current8 M# [, Y; c7 @7 J, @
(replace-item 2 trade-record-current (item 3 trade-record-current))

; G! r' u6 {/ uset trade-record-current1 r0 l. @: U; I) m8 Q
(replace-item 3 trade-record-current note)8 y5 H( \3 w7 n7 F  |
! N0 U1 G6 X; V' i$ s; O
' z, ]5 `% ~; j
ask customer [
6 N! h- N7 R' U, A. d: Cupdate-local-reputation
) ^! |0 k2 H  h8 Oset trade-record-current! T4 t5 i/ a" s6 U' C! G
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

3 T, k; S8 d: c4 f+ L2 Z]
8 n; {; }4 y% k$ N1 Y( J! F1 R; u0 P: ~) {

/ r4 P% j' h9 j6 rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 e. n! ]- T4 Z8 x3 t
: }% h" s/ c0 _
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  k3 O: e1 _1 Y6 b
;;
将此次交易的记录加入到customertrade-record-all) @. ^& S5 Q8 V( K
end: Z$ e. K( U  s" E% Q' r, s8 U8 R4 B

! V$ R+ h% q; L) C, \* T1 bto update-local-reputation+ p! V3 i1 m8 k! e4 S+ D
set [trade-record-one-len] of myself length [trade-record-one] of myself9 J' j) ?. E6 E7 f: [. u/ q! t
4 w$ k' ]% Z) y- S0 ~
2 x, p4 h/ _, ]+ t' E
;;if [trade-record-one-len] of myself > 3

! t0 m$ _* [2 k! X* r! Xupdate-neighbor-total
) ]' ^! I; ?6 M% |;;
更新邻居节点的数目,在此进行
! E- [2 j1 j$ c  a1 plet i 3# V$ w, \/ {8 P9 W# j' r7 [
let sum-time 0
6 N( a3 Q5 @: M& C  k: iwhile[i < [trade-record-one-len] of myself]) z! r$ Z# q  O. i6 |: h: s
[
0 W  D$ }3 A* _! }. t, Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 }/ Y$ y& J- k: L. _( {6 R1 F
set i9 s& X! G- m+ n& R5 r9 ^+ [7 H
( i + 1)

& h: o1 L+ ]: x) ~  h- |8 j" a7 A]
  k  B1 p1 y$ u' B  z" Alet j 3
4 s+ @9 F2 p/ k2 Alet sum-money 0
( q% t) R5 u- i( ?6 Q  c) |while[j < [trade-record-one-len] of myself]
0 x% B( H/ @9 U" b2 @3 \[
9 g; S3 b6 l% m7 I, H9 oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 V1 \' i7 x4 m1 g" b2 H
set j8 o& W1 T3 f: s. O/ v' U; L
( j + 1)
7 M6 s) l* T! w8 P/ [+ M( M
]
$ C3 f/ E" d! V+ Llet k 3
0 N# z( k( H9 c/ u# ~let power 0: }1 v: p$ D  Z' o0 E) }6 N( z7 [; Y
let local 0
# q' z$ i( g) D. Y( }& Mwhile [k <[trade-record-one-len] of myself]6 m  z% O6 d9 d/ W
[/ Q& a7 L; H! j. {+ _
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
# {7 F( Z& P! q7 L# I- {set k (k + 1)
# c* W- {2 n$ F5 ?]
6 a9 E% e/ \  @0 f) F$ C% Pset [local-reputation] of myself (local)2 C' b) o4 ~4 W# z. h
end2 [4 K* D' ]; S) \( H

, T. ?5 Q0 z! J8 C1 A' @to update-neighbor-total
4 ]( p, n4 P6 O. M1 @/ S. Z; ?
9 p  T* k1 I/ H- v- R. a. M6 Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 V+ Y0 B# m2 H/ l, e3 p
9 C4 z5 q3 q/ y4 F; v# K5 z. T

* h3 |0 B; h( @& d8 g; fend# Z0 L4 o. A3 p: ?
% {4 E* m( p8 w" o
to update-credibility-ijl
: I; }. I" k/ Z7 l  T
3 A1 d& L& o% }3 t, s;;
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。
( J5 \2 j+ _* u7 C( [+ k( Jlet l 0
0 N* U" |2 e4 N8 d4 F- u8 wwhile[ l < people ]
  \1 n" Z8 I" B  M) t$ b;;
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
4 U" D- u% i3 h4 ~% e[
! U2 L* \% l0 n! C$ \1 X* _  t& X# d+ |let trade-record-one-j-l-len length item l ([trade-record-all] of customer). P4 P* y2 F$ S- N! G
if (trade-record-one-j-l-len > 3)1 }3 x# o1 }* R, f
[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
' O2 K. G) w: T/ Jlet i 30 y+ U5 P/ x" J& }' {; V
let sum-time 04 p4 G1 ?4 n9 z
while[i < trade-record-one-len]
! k  y0 a( i/ m0 M6 k; o[) f. S* F0 W8 U
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' l8 w, k$ S6 S
set i
; E- P! F+ N9 I0 U( i + 1)

) G/ X2 L+ s# S  @]
( |; N& H  R/ x/ v6 ]2 N0 Glet credibility-i-j-l 04 `9 S6 ^; J5 B; U! t. |
;;i
评价(jjl的评价)
5 Z* z4 U* I0 @% z3 F0 hlet j 3
7 \! P& T; C- a* s& C! Y. D& c4 ]let k 4
1 Z4 G( h. P+ Fwhile[j < trade-record-one-len]3 ?& F  y# t! a& i3 X( T! p* h
[
( u4 D# t; V# Q$ ]4 E/ ywhile [((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
. u( K' p0 w/ e# ?( d. tset 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)# o( r: R+ @4 _: X+ a
set j) P; i0 v$ B2 C* ~  K
( j + 1)
, \9 r8 Z( f; L  V3 w
]) j" ?" Q; ^& P( Y2 @6 w
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 ))
$ F# L! {( K5 h! G
% E6 u0 C7 `6 b! J" c* F

4 t! ~8 l% w2 n; l: |* [8 |/ k/ ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ p( L6 m! d4 t; C: Y2 ?8 ]" K;;
及时更新il的评价质量的评价
/ Q) M7 n3 C2 g; j4 \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], s( T; u- X' }; e: i+ _: v7 h) ?
set l (l + 1)+ q/ i+ l% g) B9 Y* }/ t4 Z  W
]
: x2 d+ q; H4 X1 }end
4 l' K* b8 H, x7 `: p! Y2 N8 b. t4 [* u2 _
to update-credibility-list6 |3 p) y# G2 l( V3 R
let i 0
9 ?$ v6 H" a. E/ @; swhile[i < people]
( P7 k3 n, j  z- k2 b0 c[( _9 l: D2 \. e$ h0 x6 O
let j 0
% j9 R5 G5 X; H) y/ tlet note 0( I' [- F4 }1 [( r# o
let k 0/ _' y7 V+ V9 o
;;
计作出过评价的邻居节点的数目7 A2 r/ l" \& j( u2 h* j- @4 A1 [
while[j < people]
! m4 r0 h9 D( C. J( B0 o[" q3 e( z2 t" n4 O5 ]9 D7 }1 X
if (item j( [credibility] of turtle (i + 1)) != -1)
4 r: y2 ~4 L5 d7 l;;
判断是否给本turtle的评价质量做出过评价的节点
* T& `' U0 o* e/ P, Y5 a9 m9 p[set note (note + item j ([credibility]of turtle (i + 1))); ^& x, _+ W2 Z1 d  b
;;*(exp (-(people - 2)))/(people - 2))]

# F6 I* J; s9 _6 R8 vset k (k + 1)
5 H- v* q: X( Y0 l1 J. i7 K]: E. p. P6 a. d+ i0 T
set j (j + 1)" L8 ?, q% c* q2 w/ ?4 e" e
]
& z1 `) p* x: r9 kset note (note *(exp (- (1 / k)))/ k)% O4 G! a, o2 g# u
set credibility-list (replace-item i credibility-list note)
! {3 a8 F* u, m, W3 u' O; W4 ?set i (i + 1)
/ J4 P( _: T9 M6 n4 u0 m. a]
. w# c2 _+ d% p$ D0 tend/ ?! o2 Q+ e+ O6 w% D$ o! H

9 s- g- k9 P) Z- L4 Y5 Q  ?to update-global-reputation-list
# q, Q8 _: N* ]9 clet j 0+ Y1 y  }0 q$ k6 b7 x
while[j < people]
  n! O( T: l0 ^! q0 w( \; T[
& A' S9 N1 T- wlet new 0
' e. ?/ @5 ]4 e; m* k1 {;;
暂存新的一个全局声誉
  c; D* @/ s" [; J, C$ G+ hlet i 0% `; ~1 V5 ~+ x( v2 h7 S. T$ b9 r
let sum-money 0# d, e* L6 ~0 ?2 o+ v
let credibility-money 05 r0 a/ C5 {: h8 W0 v. }
while [i < people]2 m0 K9 W. O" i4 a* F+ t% i9 N
[% \) p1 ~! r- s6 j( V  Z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
9 r! E) o" J6 N2 M* f3 e" Z) xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ f' r: }  H( m4 v
set i (i + 1)' Y. `& U9 [/ I. f3 c$ }" h1 P
]
! e- m: w; G+ @; dlet k 0
4 W, c0 v9 B/ Y& ulet new1 0
) j" {! i  _- y# d0 c! ]3 O" Ywhile [k < people]6 ^9 g8 E. V( s; U) k, d" J
[
& L/ r' s( M" a1 |. p! U; g  pset 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), N) q0 A7 h- n3 k0 {
set k (k + 1)8 x) r0 x# n$ ]4 J: J, \9 y: h
]9 E0 P) ?% C" ^0 r6 K, O$ j
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
' _! e6 i- k/ g5 J1 m: g, yset global-reputation-list (replace-item j global-reputation-list new)& p: ~. S  N9 H# e' }
set j (j + 1)7 M6 Y4 J( F- e/ Z! |
]6 w/ N5 ]! K& a- m6 D
end
- L7 l$ A! t" V% e1 x
8 r$ a5 K* a( _( V
1 D+ @- x3 h3 n
/ z7 A  o) i. ^  v; Dto get-color
5 i8 q; W* t. y6 v- z% N: p
, U( N+ E9 J) ^+ j4 ~4 n# ~! |set color blue
: p( H# {" Z4 _) L6 l; I/ S" c8 s% _
end7 y0 f( t( i9 T, Z5 M! _8 i) w
8 t& b/ m! W2 B+ N2 H- i
to poll-class+ P( S9 p; |" T/ \( o& Z7 }" v! B
end
8 O( Q0 K3 o0 w2 P
9 h7 s8 z$ f- t& T6 s* _6 ?to setup-plot1/ s/ d1 u" [& |8 x, H4 s

7 V" K* M' L, Lset-current-plot "Trends-of-Local-reputation"

! Y5 F- S1 o' b3 t& B' G5 \" e3 M
& g; @. w% i( `5 O+ V5 N5 E2 Mset-plot-x-range 0 xmax
9 t5 S# Y( v: a5 c* y# \- e( t( d
7 Q1 n# E7 x3 u8 S0 y% g7 H
set-plot-y-range 0.0 ymax
, D# u. }& E# y: h8 H" v5 ]+ W# V
end' R" M3 u; X8 k& q& P) H

9 O* K: q1 j2 r2 xto setup-plot2
" N  w4 F. w7 M/ _0 T+ `+ o
, T: s/ F3 z+ O- u( G$ J3 l# cset-current-plot "Trends-of-global-reputation"

: l! b$ Y: W8 m, ?; Q+ K0 u0 P' K0 c' A
set-plot-x-range 0 xmax

4 n0 W7 `! Z) @# O; f0 i8 t2 I% b. c9 A: A9 ]5 F
set-plot-y-range 0.0 ymax

" o; l4 H! S$ @/ d2 u6 ~; {end7 N7 e/ X% n+ u& @# b
, E/ Y9 x; Y4 y9 O
to setup-plot3  b3 c' m/ ^2 j
( R+ q) {& ?, B$ h5 X
set-current-plot "Trends-of-credibility"

2 P% V- z/ V/ E+ D! r8 q& t5 Z
! I" v5 \4 L$ y; X; b6 G" Dset-plot-x-range 0 xmax
: X# u, C, J" _$ ]4 f. n) ~- u
! s5 h9 x  w1 k! S6 H- k
set-plot-y-range 0.0 ymax
6 N) M9 X* j! r  w
end# c2 S/ o4 Q1 _! D: f
$ R8 D# h) G; ?
to do-plots3 Y# |% d4 q6 F. p( j- }) N
set-current-plot "Trends-of-Local-reputation"8 i5 l# r" R( l. c
set-current-plot-pen "Honest service"
3 F: R! Z4 h" u7 R3 S2 eend6 Y: g; r/ L: ~3 w) K1 J; j1 ^' J$ s
7 q- e) _$ `5 ^7 @
[ 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.' m) P1 Z( t/ U

+ ?) _" T: k7 n2 F0 ^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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