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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:
  W& Z7 C! `7 b/ X9 q, h  L- P; Nto do-business
  q6 d) ^/ ]2 w rt random 360
& d5 N/ J+ N+ S fd 1( z) J( M6 U. \+ r4 R( T
ifelse(other turtles-here != nobody)[
9 a. z% Z, G3 g$ a  c( Y   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.
( R& x" W# q3 b( E) P' {3 f0 O! U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# t& b5 A1 ?1 W+ }. o4 \, j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 ~1 |# d( g1 a$ I) f' h
   set [trade-record-one-len] of self length [trade-record-one] of self" E$ L# m1 j$ a9 E# s: X  Z, z) \
   set trade-record-current( list (timer) (random money-upper-limit))4 a, K3 s% E& A) q  R+ t* c

$ z9 c2 p+ j8 U( [1 j  I* [问题的提示如下:
# G! [4 r; s: l( Q
; ^" Z4 H. M- M0 v6 l: }error while turtle 50 running OF in procedure DO-BUSINESS( t, g4 }7 R8 I2 z& `
  called by procedure GO. }# A3 `9 B& w  B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
1 w3 O! V3 a/ @" h
(halted running of go)# \) x* Q3 j& x- n
; Q" u* K" Y. f0 n2 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~~# a6 E+ x2 r* u9 j3 E# z
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4 R! ?; I$ M$ F% K% a' e- h5 {" S+ W
globals[5 p- E, O! W  G" ~' j; R9 Y- z
xmax
  u1 C2 B/ ]  H- Zymax) b1 b( ^: E. \! i: N. g
global-reputation-list
9 c* `. p6 i) }4 c! _. f% J: m0 X7 `* p: b$ ]
;;
每一个turtle的全局声誉都存在此LIST+ A4 u) n: r+ c& e9 l/ c
credibility-list
' a, L& J! x# U6 c4 _;;
每一个turtle的评价可信度. P9 ~9 w4 H# q
honest-service  g& P6 t4 m  ~$ n  k  ?* x; S# @
unhonest-service- Q; d# z8 E# o/ ]. u
oscillation
+ v$ l6 R. j) c# jrand-dynamic8 o. J! o6 F- g8 s0 e$ o0 m  B
]
! f1 U) x) }, O% C7 U: ?4 G- w3 _6 ~+ c- y
turtles-own[* H3 T  X" O6 V( v! k( j( f6 v) `
trade-record-all
% v) ~/ u) r- t: ?;;a list of lists,
trade-record-one组成
% o+ H4 h% e$ ztrade-record-one
$ M1 \( J9 f1 r- ?( o2 }: Y7 q;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: u$ T5 B2 X7 q# P" r: a/ Y0 s/ f/ f1 f* Q2 z% v% a4 q
;;[
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]]
7 w0 p+ T  V0 b5 V7 |$ xtrade-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]' J5 ?7 c( R" n7 C3 T
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
/ u4 q+ r/ X3 d! ~# `5 R/ W4 x' @neighbor-total
, k1 ?/ w% L7 P7 E) g+ B;;
记录该turtle的邻居节点的数目8 R# ]/ Z' e4 s1 ^
trade-time+ Y) s9 \# K- _3 a9 e# u
;;
当前发生交易的turtle的交易时间4 [" F: D( D, T' h
appraise-give2 \2 D6 ~2 ^; s% w4 N, P
;;
当前发生交易时给出的评价! W% `% B6 b. Q2 g9 p$ P; |- H
appraise-receive1 u; Q+ ~9 F; L- q7 v
;;
当前发生交易时收到的评价
. a& r( n3 L# ]4 d9 `6 }appraise-time
7 O0 [! d  ~/ i) I  L;;
当前发生交易时的评价时间) k# S8 e0 X/ C. }$ i0 F
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ K3 h. }% }, }! R+ S! Y6 p8 G
trade-times-total
- i4 P! g% `: d;;
与当前turtle的交易总次数
1 I5 P# c( e% K4 x2 r$ {8 _+ H# ctrade-money-total
& O* ^# Y. M8 v;;
与当前turtle的交易总金额
# G) T2 `) [6 b5 I7 g; v* Alocal-reputation6 g+ X$ L+ B+ O
global-reputation
) v+ S1 d0 H" p: _2 q/ T. hcredibility8 ~0 ?* B7 u/ U1 h( f( i$ R& M
;;
评价可信度,每次交易后都需要更新0 s, ~3 p' }( G/ F8 a7 q* L
credibility-all9 w/ j; R) @; J
;;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 B8 i5 F7 Q6 O5 r& X7 R$ r6 F5 \- H  e- f. m3 o3 |
;;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
2 U1 f. `' E- R$ Y% ~credibility-one) w6 T/ D" x, x
;;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people6 m  t4 Z5 q8 D5 {
global-proportion/ H- G; C: i9 M, n1 P" n# \
customer
9 L2 L1 s! z' |# ?4 {) `customer-no
; E# x4 \+ a2 w& V! f* c' xtrust-ok/ T6 P6 M- ?, U; b5 [
trade-record-one-len;;trade-record-one的长度7 q$ u; I$ j% o
]# q5 K' j4 P1 v/ l& e4 m6 x
  |! u" f! j0 H! H  Q1 B& ]
;;setup procedure- i4 b) Z0 ~. _
4 i+ x. \6 N0 x+ e
to setup: `. C# t9 Q$ O" H1 S1 G
; o2 m) m' Y; m/ x5 |
ca

1 }7 A2 a0 J0 ?8 b1 ^- y) r! T7 z* F( ?" Q( t
initialize-settings

9 q- D0 f7 m) v4 ]  Q( o- Y, r
% v- R! S; A( B5 ]- Hcrt people [setup-turtles]
) f) Q. a$ T; d, G, @; l7 y

4 K  J4 I6 G# E( Sreset-timer

; B& B; q$ ]8 n- ]" `, ^- @
0 c6 G; `1 n& Tpoll-class

; d% L$ {* ~) |
+ y) M" g9 ?7 N; V# Jsetup-plots

# G3 u! k- ?$ O9 X; T# d6 X, m8 {1 J6 \4 P% K' O+ W" q* T( F
do-plots
) N- ^0 S: \+ i% ^% G8 `
end
3 t- X. v1 j- F) y, j: _6 H6 Y3 h* }  H
to initialize-settings1 s5 {" \/ I1 l- z5 H, v6 E. m; s

8 W" E! L5 r/ x( N, Z6 t8 Sset global-reputation-list []
- H. J- z* z% g' ?% Z" P
# ^) F6 g% n5 Z4 z6 B* w
set credibility-list n-values people [0.5]

7 m+ X7 q0 F& Y; m- J% p( x2 l2 P& t+ I
set honest-service 0
- U4 n! N# N; j/ O: H/ [- Q/ C/ W

5 {8 r8 L& N; H. cset unhonest-service 0

+ P, O  w' C6 r9 t& i- p
1 W. S4 ]2 i( H2 D% Lset oscillation 0

# ]% O3 D" y- A  l
2 f. ]  m$ j$ ?; uset rand-dynamic 0

3 p, R' ]# l9 r8 N6 R# q7 ?end
! ]$ a4 y9 H, B3 I/ R
3 X# Q# i5 C7 E! M3 e! ~) Sto setup-turtles
- ^/ ~/ ]8 h; c% V8 W$ B9 t. v' cset shape "person"
) c7 m0 X6 Q- g  P6 gsetxy random-xcor random-ycor
+ Y" U3 s3 g% S* Y, o! nset trade-record-one []
+ ^# }& H. |: ^! j# v- x
+ ]4 |: P2 n+ Q, m  z2 w3 x
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 G% _$ ~1 ?) Z# u  i$ S

. u; e" C3 I7 dset trade-record-current []3 E; H- A1 s* C7 N1 L
set credibility-receive []" C2 y1 f4 ^: ^4 {8 G% ^/ e' W
set local-reputation 0.5& ~! h" L7 u! O, f+ W6 S
set neighbor-total 0
: W/ B6 \: t* `) l' B* A9 g. f5 Tset trade-times-total 09 c8 {% m, E; L5 l9 p4 y
set trade-money-total 0; s6 t' r7 j. B. d) U, D
set customer nobody1 ^& @* z' [- h$ X: [0 s
set credibility-all n-values people [creat-credibility]0 y' h* @/ G% e! n5 |; H2 @
set credibility n-values people [-1]4 W0 f3 l9 V/ ^: O# O
get-color
! ~8 d. N% l* K' D1 z

& b$ `' O  \' y5 Mend
. C2 p, G' l; M4 d  X* ?2 I
- `# k8 K' k: X, [" Gto-report creat-credibility
6 _' W; v' l. `& G4 [' o9 U7 oreport n-values people [0.5]
5 H+ [( V" y5 C" T. |end
: x  G4 A% G- V9 i
* ?/ K$ z/ m& ^to setup-plots
' W# F, i& Y5 B, H: e0 ?5 Q/ l2 ^  |( D" I, X8 n) }. F& V' K
set xmax 30
& N' ~: j' d2 _

7 C5 f! m( I1 @+ M1 k& ~set ymax 1.0

, k- z; X. P8 E7 u. j6 Q
. d- F- z  r: g- o$ N, [clear-all-plots
) \/ j; h5 ]5 K2 P0 O& @# I
; e9 b+ ^, E8 x
setup-plot1

  o+ N8 ~. r0 V3 \% p4 g. O- P8 e. l: H1 l: H
setup-plot2
+ q  q; J  d( o9 Y0 O# D5 Z
- x5 k& x9 _) U
setup-plot3
: y) G* w0 @  |  N9 r
end
4 E$ k7 u* j* w& W4 }
# I, Z3 `- Z' ]2 f- \7 u;;run time procedures
3 I, B# b0 I' J7 E% \: d- G: |6 l  Q7 p& ]( n
to go
2 W: ~0 G/ A& U- w; u: n, b. [, n" ]+ U0 S" m$ o
ask turtles [do-business]

8 n* o) ^; v4 t- N! qend- [' S9 R% ]" Y

1 [& u# ?' ^' f" e/ t- J( eto do-business 1 q8 w  e0 U# G( [% U7 w

+ {( s0 b! _! A/ ^; x/ C
: `0 g+ o: x+ N  ]1 zrt random 360

4 h2 n5 a& r' }9 V' b8 v  D5 X5 h6 Z3 e) J. ?8 I
fd 1
/ _" F- U9 k4 a! r' u

* S/ x# E( a* \ifelse(other turtles-here != nobody)[
; M" @, V) e* @' }3 K

( m7 Z: O  g% y1 y0 X3 dset customer one-of other turtles-here
" W% c( E1 t3 J1 ^1 B
4 `7 c8 W2 D* N( @, X/ S
;; set [customer] of customer myself
# c! Z8 u9 E7 j, s; l% m

# |+ u: P  h9 f0 e8 T# X: Xset [trade-record-one] of self item (([who] of customer) - 1)/ ^1 D# I( B; a+ d
[trade-record-all]of self) Y8 y$ [4 K- @; ?; X4 Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
: n( O$ S( s& G

( _4 F4 {3 U: W4 cset [trade-record-one] of customer item (([who] of self) - 1)
3 |) a/ P  b; K6 G3 i" j1 ~[trade-record-all]of customer
0 \8 K* U+ }; }9 [
; N+ O! ~9 e- `7 ?* Z
set [trade-record-one-len] of self length [trade-record-one] of self
% \4 V( M7 C3 b9 m5 W* k

" c1 D" @1 h/ h6 B: Q! E( zset trade-record-current( list (timer) (random money-upper-limit))
/ A% v+ l+ H3 }

; _' U+ Z1 V6 H; ]5 Z% Z) pask self [do-trust]$ B# C# O* d1 t3 a
;;
先求ij的信任度
8 \  s9 N6 w5 _1 G  l) b3 L+ U! [7 ~9 p& F  L6 Y! r
if ([trust-ok] of self)# t$ c. o# K" w- m' q) x9 N6 ^
;;
根据ij的信任度来决定是否与j进行交易[1 s6 L1 V% s2 o% g6 @: x
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself; H  q1 s' |. p
7 _) I7 z. \; x8 x0 u, ~
[

7 E$ `; X7 j4 l8 u4 }3 \7 E% n1 L- a5 o4 [! v  c% M
do-trade

4 P; [6 t& t+ u5 J) |' n3 Z, z+ p: x6 a! A8 c- l% i
update-credibility-ijl
6 D- X! P. M: l; Q2 c

4 A5 l7 {0 q( _update-credibility-list
. X  t$ C; {5 L. S6 b. Q' \
% x: }: j/ b9 i
; [: f. s0 k! S: J3 g
update-global-reputation-list
. {' I6 |! n! {3 s' R/ _

& M7 q5 K; N1 |$ Z* q: s. w7 i5 Fpoll-class

& Z' E. K/ z; i+ }. @
5 T+ R- [% E. q) B" xget-color

- I/ O5 U9 M6 ?  H; [
# I& v5 l7 E: l) Z; o  N]]7 O1 W# l# v% y9 W

% {/ }7 y! H/ v$ h& ]+ {+ R;;
如果所得的信任度满足条件,则进行交易
7 D) r+ ]1 ^' n5 U) K! J) V" C+ C7 y8 C1 p
[

; ^4 E; h8 w0 _4 v2 Q. M; \+ j% B8 L
rt random 360

5 t' }* S" ~& p
3 O. E& c1 A4 z+ u7 \fd 1
" E5 F8 ^3 r, m& v: F" f, f" g; i
3 E/ z1 x" M' C
]
" {; \9 z( M- N: j. [
3 p' T, U. P. \) y# N
end
' k: f2 l3 }5 j* a4 a
7 a/ H8 i% n* v  r$ l: M  w
to do-trust 9 Y  ?" F# l2 P0 H* @
set trust-ok False% o8 ^0 B* S) z$ H, ]$ p

' e. i4 R7 W5 E6 ~, s$ h# u8 G

$ ^  X: x3 f" Y- h" ]7 Hlet max-trade-times 0$ i0 w3 @1 _" ?5 O/ X8 x# }
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]6 |2 M5 r: @9 z
let max-trade-money 0
/ Z9 j7 K7 n( E( h5 F9 U  f5 ~foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 U' i4 @: m" T9 X
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
' ^. ^  _) G% P) \; e5 ~- {7 V; w* W
3 y" F8 c$ I0 \& a/ q- A% G
get-global-proportion
" g( c( H- |7 G) s. N' M: _let trust-value
: l& @) ^: j2 j# ?$ ~) h0 x) _local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
* W8 ?8 ~( g& C8 c# ~
if(trust-value > trade-trust-value)
0 D6 a+ d: Z& Y[set trust-ok true]% i* K+ e9 S6 l0 J/ F8 N! ]) `
end
, _6 B3 n7 ]) N- W3 }  s
4 M4 c& ?2 y: I% W$ B/ ito get-global-proportion0 H" F9 F5 S& J, h
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 M' h- D% S4 C- O6 e, D) A
[set global-proportion 0]8 l8 v+ ^+ V& U/ Z9 y$ ?& L& r- e
[let i 0$ s" |2 B' a2 K  A3 A1 L) {/ o
let sum-money 02 b5 U! W5 S$ t% F2 ~$ Q
while[ i < people], C2 n2 h) p9 {+ E$ S4 M0 T1 e
[
' U% o# P7 ]4 ?, g) S& mif( length (item i7 A4 R) X! W* O3 W9 k. \
[trade-record-all] of customer) > 3 )

1 Q8 J% ^5 u/ `[
/ O6 {6 [7 B9 C6 [( Z- Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 {. `! r8 F) o/ s$ K5 Q4 P" r]
* ^1 @4 @: _0 X]$ x4 L; B7 {# s9 l2 Q8 v8 d
let j 00 o$ K: x. \, m4 v/ H+ l; R4 B7 _
let note 0
! q9 I3 |1 @, M+ O, m! dwhile[ j < people]
) z0 X- C+ |) I$ ]; r% |8 y[+ p1 S" O1 y8 T9 c$ a( Z
if( length (item i9 e8 q7 g+ n7 H. M/ d
[trade-record-all] of customer) > 3 )
# U7 D6 W3 X& Y+ K6 r3 X
[/ T+ d) ~( D% u( G( i- S
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
" v2 V( Q" T( K7 k[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
! J" `3 v* Z9 p4 z8 r% {6 J1 _* |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; t( E$ a% `0 r/ G2 P# G% d- M2 q
]: |% U7 b4 y3 ?" u4 v( J8 Y
]
% ~7 N' d1 I) G: H$ q2 Aset global-proportion note
2 o1 b7 E& ]# w! W4 f" _- ]0 {( s]
7 [4 @& _( U! ~" t1 fend
! s, `0 O$ M5 K6 ?/ q: w) z# |7 }, g( S0 n# @. U
to do-trade; o3 |. N& J! A" a- x
;;
这个过程实际上是给双方作出评价的过程
: C$ J$ n$ l; Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
: k& \0 G- ?1 p4 `  N! E5 n7 F2 {set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 {" B; @& x3 @1 e
set trade-record-current lput(timer) trade-record-current8 t& O2 S4 U/ Y# b
;;
评价时间
7 c7 F5 a' O4 b* Uask myself [
2 P, g8 L7 Q) @9 yupdate-local-reputation
) d& I9 q/ h$ C+ b6 k3 H9 kset trade-record-current lput([local-reputation] of myself) trade-record-current! P8 p3 n+ k4 P/ s8 E
]7 {: a: A  b0 N0 U3 ^3 V
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 R% B9 I8 W7 s
;;
将此次交易的记录加入到trade-record-one( c, G& r! J% s% o) f
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ q4 [# `/ o3 llet note (item 2 trade-record-current )! O" l8 P, ]! M
set trade-record-current* e8 y9 u0 V% e3 U
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 U) ]# m! b3 D6 n& n! b) F; Xset trade-record-current
3 Y' P  p) B5 K0 R8 K3 o% M1 w(replace-item 3 trade-record-current note)
+ G8 }: Z6 H( l# ~* O7 L2 d+ N; _. W! N. P/ E5 S) \' q
) A7 D8 j( {$ ^3 a$ N+ z; b4 U
ask customer [
3 d: B7 Q6 u5 m$ j1 ?update-local-reputation
- \$ V2 w* t! e* `6 J/ J% a9 Bset trade-record-current
" R0 _& U' G2 r(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* |4 ]+ Z) S5 Y' A]( D' D$ Y' {. E, A5 \, }
9 q; m1 D# |  A! T/ t& B8 l5 K4 J

: X$ l6 a' ~5 |4 w6 `) Dset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' F6 ^+ ?4 N! Y+ f+ [" A( q. v

+ x. t" ?6 m) z8 ^' i4 [0 _! fset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# P* K1 |% Q. j& ]/ ]1 j9 E5 R
;;
将此次交易的记录加入到customertrade-record-all
4 o, B8 @$ [, d0 t8 J( {8 iend
8 f9 d! j( ]; s. J6 |' q0 s; t0 e. m2 a* U
to update-local-reputation$ m: ]4 t9 H3 O) N
set [trade-record-one-len] of myself length [trade-record-one] of myself% f9 N' p. K# U0 Z
1 G1 W1 m" g2 R3 Q0 a. ^" u
9 z) R1 G! u( I/ q3 ?
;;if [trade-record-one-len] of myself > 3
* e4 I/ g$ H* H, u7 Y+ k" _- E
update-neighbor-total
7 h) f  h8 D5 B7 };;
更新邻居节点的数目,在此进行
0 m6 k, q( Y8 `: k) q8 Ulet i 37 h: q2 ]' v4 n! @5 a7 x6 w. |' j$ B
let sum-time 0
9 L$ r* _4 ~) M! z3 z& }* Owhile[i < [trade-record-one-len] of myself]
+ l" N4 O1 H' ]! B: h[6 @7 R  I( O6 T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& I$ W% o/ n) A6 Z9 W. Q3 O: jset i3 C$ x! K  X# K" B2 Q
( i + 1)

5 B' N6 ^7 i' S8 S]
5 m: m4 l6 A; ?2 D. Flet j 3% F& u, y! k8 P  q5 N) @) q
let sum-money 08 Q: u  ?4 S7 Z" f9 {2 i- h) A
while[j < [trade-record-one-len] of myself]" c! ]( r2 X- y2 Z4 E3 s3 i
[) W2 l, e5 a( C+ }9 t
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)7 l  E4 u9 v1 _+ @! q1 @3 n' m
set j
; h: W+ j  {9 S1 k) m( j + 1)
8 k' n- d3 J- o' R$ d/ t0 K
]& Q* F3 E& }/ o1 f, b: C2 q
let k 3  c$ s* d8 J$ [8 f# D/ m- n/ ^8 P
let power 0+ }% p6 w. x- v" ]. G. X0 g: |; `
let local 0( x  S4 j. z* f  f3 J
while [k <[trade-record-one-len] of myself]
7 i- d# v( [$ w1 {1 ~- P[$ b7 ^$ K# y+ M0 G
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) ' R* E, u* n# t1 H$ |4 |% A
set k (k + 1)
7 q: F% O& W) s# i]$ e2 Y9 E+ x9 D' J0 D
set [local-reputation] of myself (local)
6 ^  Y" b3 z1 k$ e( yend3 L# U# @, S  d3 h* U/ j
# @5 v2 a$ q% |' b
to update-neighbor-total
" R: M9 S' J! O* Y' s$ P+ ?
7 l: A* e% e1 E5 F4 u$ ^if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]$ Y; H; O" Y  }7 S
( W. t- s) k# ?+ r9 C( a
2 y" L9 s- W4 T( f, \8 x
end
) ^2 S2 t* P3 ^6 \# t: O9 J8 f* g' P" Z. W
to update-credibility-ijl ( V0 M1 R( d4 G! U9 s; }1 O, |4 H  u
+ k, S7 K. ^9 J" |+ d
;;
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。  Y* O+ A+ ~, }% S- X
let l 0
) f+ T9 T: _. f1 o; M# hwhile[ l < people ]
+ e( P# E, c$ s* z. `;;
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
' p$ e! Z% Z* X4 s: x$ p& X[4 {" ]! K' s- p+ v9 S0 l' G# |) g5 t, C. w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)1 S1 y# X, i: P
if (trade-record-one-j-l-len > 3)
% K8 S) X% ~+ c- k  j' ~! H[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
: d: _- z9 l. t: Klet i 3
  b) ]" D: V3 A) G" l$ glet sum-time 01 e- b' n  N3 ~3 O) t3 C9 B0 u
while[i < trade-record-one-len]6 m, i  q6 s6 E7 J- }
[
" |# i2 d$ O( z/ o9 }! n1 n6 _- H& cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )0 G( t1 p8 S; A* Z
set i
. \+ ~4 W! W0 K( i + 1)
3 K2 S: `7 L( R5 c
]
$ y+ H* j$ ]  |. alet credibility-i-j-l 0/ Q! {+ ~5 g/ {4 ?/ ^" k
;;i
评价(jjl的评价)0 w. o1 u4 f$ a6 i% `/ y" Q! J
let j 35 |. F- P; v3 }4 \7 b
let k 4
1 [- U/ b3 K" I. F. S( a5 s0 dwhile[j < trade-record-one-len]1 T# Y5 f% o% }) i
[7 e2 Z8 [! I% W1 S- h+ D
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( D8 a4 m, H  x, K" q: {( u* l+ s
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)
& x) z; k6 Y' H/ {; Iset j. j% ^$ O0 E( A
( j + 1)

) }2 a* A, @; g) j7 X( x! q, K]- y+ g% M9 S6 s' 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 ))( Z5 {& P2 f& S. ^7 V3 d7 o8 K8 u

+ F7 k. H% I# }" Q% ?  y0 f1 J
/ s3 s! T+ w1 g) q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), |  ^+ \: s: x& R. z# A6 R
;;
及时更新il的评价质量的评价
3 y: _1 |2 `7 r/ c% Vset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 K: B( N* F; dset l (l + 1)/ ~+ W# ~7 S. _
]# d& u0 G# M8 ^+ X$ f! m
end
6 a0 p4 ?# j& g+ B- a+ g' e/ F( o0 @6 c. D3 z8 Z
to update-credibility-list
+ S4 k! P; W/ z9 k; slet i 0
: z+ Z  l" q# ]' M, ?) \8 g* A9 qwhile[i < people]0 V+ g7 M7 H" l3 q# L
[/ S/ I6 k/ z( X% N& c0 I& N5 j
let j 0
& }6 Q4 n. b+ w* C" `let note 0
$ A2 B# k5 m/ u1 {, Olet k 0
! Q  x# i1 C7 h5 e- k;;
计作出过评价的邻居节点的数目6 C5 N4 c3 z/ O
while[j < people]) P# e, _( z0 }0 ], G
[/ j4 t2 m: y( y* E9 G- L
if (item j( [credibility] of turtle (i + 1)) != -1)( W2 e" l/ B; X# r$ Z
;;
判断是否给本turtle的评价质量做出过评价的节点
! H& `- J; V1 _  _7 p4 v[set note (note + item j ([credibility]of turtle (i + 1)))" c6 i$ m3 X' i0 I0 r! d# B
;;*(exp (-(people - 2)))/(people - 2))]
' |6 ^; L% a* i5 y3 m3 D
set k (k + 1)
2 ?/ q. |# Q2 [# w9 o]
. U7 y/ h: h/ o8 \& `7 kset j (j + 1)2 r& f( H2 C& ]; m
]" L' w9 Q. U, {  }2 f$ f
set note (note *(exp (- (1 / k)))/ k)
0 L4 ]' T' E& c3 Kset credibility-list (replace-item i credibility-list note)
" F# q* V0 i' U3 q6 M. t( qset i (i + 1)0 N/ i0 i. Q" j5 o: H
]( t/ B4 W! A3 \, E
end" K2 T6 D' L! H

! Q* D, x% z% ^4 tto update-global-reputation-list. S  p7 }% [& E( M5 x* w
let j 0
/ s4 {1 i5 {4 Q8 J- |, d0 Zwhile[j < people]
- i- j+ P2 S8 {2 Q3 Z8 _[# p: a" \4 p" r3 c3 b
let new 0
7 Q+ ]9 ~  s; m# D6 h; k;;
暂存新的一个全局声誉
: b+ r, u, {) x4 `; `/ E5 S0 @* k& alet i 0
* K+ E4 ?4 o( Q. a/ _3 Ilet sum-money 0
9 j( F7 u  g) d# ^5 ~. s' I% Zlet credibility-money 0: A# p- Y+ ^/ g7 I
while [i < people]
/ \8 T6 O- v: F% |5 X[
. y" z8 q0 S6 r/ D: _/ eset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 p) A! E. ]1 K1 r" `  c  o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# Z/ R* K* h5 i+ F! X% z/ y
set i (i + 1)& V* |# c$ `* B
]
4 |) g* Q+ `9 Zlet k 0
$ P$ Q, f9 [4 i" |- |5 ?let new1 0. A/ P6 I$ j2 v
while [k < people]5 [3 K4 F# ~% m2 F( c
[5 T1 x* Z- I$ S0 l
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)
* _/ Z+ B$ M% t9 _# V) {1 N! w# j+ Uset k (k + 1)
7 b  ?& |' W0 C  c' A1 C]
3 p2 S" D3 z" E- F) K* ]& pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 i& ^0 [4 u3 _set global-reputation-list (replace-item j global-reputation-list new)
6 \" d# {" D) {( ?set j (j + 1)  X8 h5 B$ _* w( h1 B2 p$ g
]
& k- j$ X* [& O* V' ^end& x2 t* B' z5 `6 {' F: o+ }

0 s( S/ V: Q" \0 e. u
6 S7 A; t# ^; f! v' Z/ @
% u4 w* v5 t- e% ~to get-color
! j6 i* s+ g; e+ w4 H& c
  }" X  l! Z) l7 A/ zset color blue

+ A9 @, Z! n% {9 Eend
! X* K! A- I. o5 E4 @& ?; M: w8 L6 Q( r- w8 G9 P! h+ t
to poll-class  S1 K& o3 D# Y/ w5 N8 ^3 D4 Z. R
end  H- O+ G  J8 J9 L

& ~+ m. P  L7 mto setup-plot1" H* D2 @3 @, |3 [* B) O
5 o9 ?( ^1 p, z1 G
set-current-plot "Trends-of-Local-reputation"
6 V% ^1 x7 w% p1 z! }: _( V- ~

' V! e* W, j0 u0 ]" A3 o) hset-plot-x-range 0 xmax

4 v7 M- D. M* l0 }) Y  u7 {9 W( V# u, o" b9 }0 ?% y" Y5 G
set-plot-y-range 0.0 ymax

6 Q# b% t# n. t+ z9 F: cend
/ [2 h9 x$ u1 u& J3 n0 f. @
' S1 R  |0 M' j) r7 c- `- sto setup-plot2! v4 @$ P' o/ [4 a0 f" Q# j, p

7 Z8 U+ `0 s3 {2 w, fset-current-plot "Trends-of-global-reputation"
/ F+ i- J1 t3 a2 f1 e

' k; n$ e/ l! z4 B4 |" [set-plot-x-range 0 xmax

- }- q3 B  u- m
  o' a2 e9 Q) c, \; Vset-plot-y-range 0.0 ymax
/ C$ R( R0 `, X8 E
end) l+ P" \  |% v4 N
3 ~5 O! c+ t; N2 n* v6 C4 o5 N
to setup-plot3
/ {6 G! y) S. @% }6 |' s, D4 D2 j
2 _2 N; K3 X& G8 M( d$ Uset-current-plot "Trends-of-credibility"

' z2 w  C2 ]6 H" B1 L8 b, F; N4 g/ G. u3 U0 O7 T
set-plot-x-range 0 xmax
$ T3 U& J, a7 _: j( ^  R" Z
2 L) Q3 |9 E8 J- g) [7 v1 G" F! q
set-plot-y-range 0.0 ymax

/ G' k- m1 P1 @2 T0 iend
/ z3 H5 s% ~) w) s. P& ]
! l' B( M4 C5 Rto do-plots) x7 C( N% V+ _3 m$ v4 M
set-current-plot "Trends-of-Local-reputation"
3 P3 N5 \) R2 v1 sset-current-plot-pen "Honest service"
. P; ^" Z' J9 K7 Z$ aend0 T  z. |6 Z  b- b, n. T* z) C/ A

% W- R0 v* I& A1 q[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
2 X' e  |! f) V% s( H( V  l
2 `1 i* ~. [" C2 I  q( v% g) f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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