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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:
# \- l  e) Z# A: h- j' F9 Jto do-business
2 W7 k% Z# N) _% M  F! o rt random 360
$ {$ s+ r1 C, }! O, K fd 15 g2 t: o" r; ?+ z1 j6 w
ifelse(other turtles-here != nobody)[: Z5 O- Y, ?" Y& M
   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.- o2 F7 k" R2 X. j! B; [/ a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    & x9 W2 U' b% W6 ^
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer2 D$ D0 F/ l+ H- l$ `* z% j
   set [trade-record-one-len] of self length [trade-record-one] of self9 h8 r- l; u- v2 `6 e% i
   set trade-record-current( list (timer) (random money-upper-limit))$ f/ `! O5 K! Q+ D4 Y  c! Y; Y7 S, n

+ _5 |% r8 @5 O; k/ w. q4 B问题的提示如下:
7 h+ b7 J% c. b- A9 o0 \! i( t% M' R5 k8 ~7 l
error while turtle 50 running OF in procedure DO-BUSINESS9 T8 i9 w8 }0 E) c- z- p. g
  called by procedure GO, T, G; f# [0 p2 _( z* P; R
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
/ Q4 \# b2 g: ~# C9 Y* o* Y# k
(halted running of go)" P/ ~! B' b# k  @5 G2 q

  _! A# p8 k1 @8 y这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~1 d" m8 i6 \3 A6 e: A
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 Y( r3 }- e. s1 F" c2 x, L$ P5 Tglobals[
1 z3 Y( `: W+ \3 _+ N, ?xmax
: R+ ^. O3 H0 @4 o# F& I5 Uymax
9 v8 \; }/ q& m" U$ Q; Z1 a9 ~7 `global-reputation-list- U2 u$ T. x6 O6 p# d
3 I2 H1 c& A1 ?8 @* T) K3 K
;;
每一个turtle的全局声誉都存在此LIST
: z  `+ z/ h" j$ l3 e& Y0 Icredibility-list
* j% C, P7 r& c6 J4 ?9 ~;;
每一个turtle的评价可信度" y% q# _: ~" d! X
honest-service
; U1 Q/ x5 a3 @7 t1 R* m9 Zunhonest-service
. U; K1 b+ r. p8 h8 Uoscillation
3 V# i6 a' U  S" ^3 B  Yrand-dynamic) b$ e0 Q# w( T% b& b
]
) c8 ~  j/ B0 K+ v# W2 l& V, ]/ m# v! c8 i1 m
turtles-own[  ?3 ^9 n- @0 U- O$ v8 _" u5 l
trade-record-all$ `2 C" h( ?( Q" z8 @
;;a list of lists,
trade-record-one组成
7 U* W: h9 f! O* W7 b: ?trade-record-one, i* r  u) F& b/ k2 }
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录, h5 f1 f% b% F

, ]8 m9 [) D0 d- }1 I8 b6 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]]- b% A: Z8 Y0 ^( ]
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]
( w' m/ i2 {5 k3 G9 g! gcredibility-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% _/ c9 M3 c+ r5 b
neighbor-total4 l. e1 @, B& G, D0 ~
;;
记录该turtle的邻居节点的数目
0 J9 V, q; q% B3 @trade-time4 k' \% V9 ]) K7 x7 A
;;
当前发生交易的turtle的交易时间
7 W( T. G( I# n3 O. [appraise-give# j: t! ]8 u: b% l3 x8 }
;;
当前发生交易时给出的评价
1 g$ ^+ E; W' o: G8 Kappraise-receive
, M' P7 |+ Z1 [7 G+ _/ u% y;;
当前发生交易时收到的评价0 z) _8 Z- ~- Z7 s
appraise-time
6 P* ~' u; z, A+ Z;;
当前发生交易时的评价时间& Q5 H+ ?  ]- l! |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
1 Z0 G3 l0 R: e$ ]# ltrade-times-total4 r* L' o% C; N3 ~! K0 W8 ~
;;
与当前turtle的交易总次数
7 n, @8 F  _8 m2 I& @trade-money-total, d! u6 y) K8 \9 B8 F& C: C8 ]8 `# W% S
;;
与当前turtle的交易总金额+ Y0 D7 D& O2 u3 n+ f% v3 G
local-reputation
* M4 o2 R2 ]: e! I+ _& oglobal-reputation
, [; `% M: x$ |6 f: scredibility
% E; {( t& F! t$ ?- d9 K1 p;;
评价可信度,每次交易后都需要更新
6 f/ y# L% z3 H0 a# Q- C$ gcredibility-all
7 C: B1 \5 c# f' H& z6 N8 U;;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/ O3 x( P" q+ Z; x8 C- K2 W
; d/ N0 t) J( A2 K' ~
;;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
9 ~) X! g! u8 }7 vcredibility-one
; U! R6 D6 k8 O$ I;;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
+ A! u5 r+ S% Z2 B; s  J3 p+ lglobal-proportion
% @  p: ]' v0 _* P) `' g& [customer2 |" S! {9 V! u' q1 e
customer-no
# p! m& M( ~+ E( a, E' F( }trust-ok
! ^; @5 H( Z  E' ^* h8 T: s+ ftrade-record-one-len;;trade-record-one的长度- [& I: S3 Q+ b+ ]! R
]$ f) E* t7 H& Y( R

0 s1 G: o8 }1 Q  ^9 q( P" A) l8 K0 H;;setup procedure( F2 U/ Y; z2 {  p0 e" k+ w, {
% L# |0 Y  ^: M2 \% h% T
to setup4 v, B# ?  G/ W) ~* G( C
0 B! G2 L: e4 U& b4 S/ V
ca

( {/ v. @7 o8 e2 [: ^1 U; }5 Z
( ?0 e+ v" F* Q5 Hinitialize-settings

- h- b5 ^& {* N# R, o8 Z' }" @* c; h) m( P8 L+ O4 p: n
crt people [setup-turtles]

4 X/ w( q, f- N4 Y
6 X2 r' l7 b2 ^6 freset-timer

" k% t' [' @' f5 v2 O' z1 K2 b) p& r$ ^/ q' c
poll-class

; K9 @6 X. L7 d# q" z
+ L4 y7 R4 C& Y/ isetup-plots
; O0 i/ j! ?" h% U! h" ^% A8 u, Q, o
" h- k: I  Q" Q9 j8 u9 x& V  n
do-plots

+ N; V/ l2 [+ z7 W% q* y' Qend  x# z1 G2 U! p

& u$ ~- f: m9 U* ^  p3 E% O7 Ato initialize-settings+ [5 P9 D4 O3 ]6 v
5 S; d$ i* d( V7 k6 w% S# {! [
set global-reputation-list []

) {) |8 T& Y" ^6 r2 R
0 B& u$ @3 \4 F, v: n' s. p3 qset credibility-list n-values people [0.5]
8 k. w, S9 E7 y5 D' a( c0 }8 |

; p4 X, c2 ^5 ~! ]set honest-service 0
/ |% l# i# q) m
( C- S; n9 U2 _( E; O! b( B
set unhonest-service 0
, p& j6 d( Y  J; w
( n6 c7 q! J" x; Z( o; P
set oscillation 0
0 g3 v  u7 g+ v; ^( y; A9 B

. ]# x  N) Y( |5 P" F2 wset rand-dynamic 0
% b2 `: Y# m7 O5 @) z; [! Q" |
end3 @5 W2 \1 I* g9 B
: i( g  N1 d9 J
to setup-turtles + u9 B: S% h4 c$ T
set shape "person"/ T1 H' }3 f1 M8 G* d3 F. Q  x; P( j
setxy random-xcor random-ycor- g8 V. `/ }) r" m8 \
set trade-record-one []; F1 O8 |6 l7 q, a

2 }/ G( s6 b" \7 d: w# Aset trade-record-all n-values people [(list (? + 1) 0 0)]
5 K% w/ _0 w: u4 e0 K

7 U; b' }6 [- V  U# F3 ]* }set trade-record-current []
( S9 E/ e/ k: [! H0 gset credibility-receive []* d4 B' x2 p, _2 K6 C
set local-reputation 0.5- ]9 k9 _$ l2 ^9 p
set neighbor-total 0. g: ?' y/ O. c! v. X2 U5 J  B
set trade-times-total 01 m( V; p2 x* u9 P% w
set trade-money-total 0, C: l/ ^$ _' ]7 }4 O% L  g
set customer nobody# D8 d5 E- `; W4 G- d
set credibility-all n-values people [creat-credibility]
/ T; G7 _4 S4 h; y9 Xset credibility n-values people [-1]
  w- K/ R3 b& K: _1 ^; [get-color. Y; w1 b! |/ w: f7 f% p0 R
0 a$ k% M7 r( I7 m+ z6 p
end
( B$ v. W- K+ p5 f9 _) K# S% w' `4 N, ]
to-report creat-credibility
+ [/ b% Z& ^- B/ t' W# c% t, v' Yreport n-values people [0.5]6 i2 \7 m+ u4 m& V6 ]* ^8 J
end
3 o% r2 _! W- V3 e. ?/ o/ \* N" v3 Q& Z
to setup-plots
+ g  F; Z& @! X. G$ |
7 \$ a) x# T# p7 @* h% }4 l! }' bset xmax 30

6 X! L: w; |0 t' k, n% t/ y) \! D, L! x/ B& U
set ymax 1.0

6 H- f' |7 B2 K' m6 N# G
4 p, R% S/ o" T' H0 c  G! ~% Sclear-all-plots
4 A/ L/ }$ \$ W! W& z) b' {
; D* `+ |. G" V
setup-plot1

% }/ b9 O% e2 g& Q5 ]
0 S2 M8 k. b6 \+ qsetup-plot2
- P9 F/ ?/ h* n$ Z2 e2 B

; e1 X7 q3 J& x  G" lsetup-plot3

* {5 a. [  s- c7 X& v: N) @end
5 d2 z5 R" Y. [' `# F: l+ x" w- L( e- }& z4 I! H& i. d
;;run time procedures
. ]$ y) I3 R$ l+ a9 v! Q, Z9 V( z4 U9 M
to go" {  q/ R4 f( B
9 }- r! y0 S( J4 i( K' ~3 M' s( Q6 Y
ask turtles [do-business]
+ X8 S) d, u' ~8 i$ S" p* b
end/ a9 _1 M7 J' x* c5 J7 S
. n+ x7 c2 [3 L$ F) v2 q1 ~' {; a
to do-business
/ Z1 p- \* Q  F' r9 r' n
2 r6 D0 d8 |1 U  O

3 a0 u5 m+ r, yrt random 360

6 ^( \$ r5 d' N0 v6 V& D* R
- k) I+ C! G$ t3 g6 D* Vfd 1
" s1 {! a5 D& ~- l
, w3 M5 S" F  f# e2 X. J- b1 ^6 i
ifelse(other turtles-here != nobody)[
* b+ w* v; |" e

, K! P! A  X& d- J1 O, p; H/ ]set customer one-of other turtles-here

+ ]! m9 l/ I6 }8 y" Z* f& g
& J. n4 u' z4 ^! ~;; set [customer] of customer myself

# n2 @7 P7 J; _
4 z: \5 u! j/ ?set [trade-record-one] of self item (([who] of customer) - 1)
, d% l- `; s# e1 J$ X6 P  t% F+ t[trade-record-all]of self
1 {- J1 u# l; D5 [0 n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

+ r) ]: G: L, h0 E% h- L
" j/ Y5 x- `$ k$ xset [trade-record-one] of customer item (([who] of self) - 1)
/ m1 |! P, T" j$ d  ^" f. d6 J- ?' }[trade-record-all]of customer
: K* n, {! q* S  Q9 T

( l4 F/ }0 l0 ~' Xset [trade-record-one-len] of self length [trade-record-one] of self
8 B1 t) ~  @6 j3 D/ ?/ n; t( ~
$ E, I9 Y% I$ `4 a+ v1 [
set trade-record-current( list (timer) (random money-upper-limit))
6 M1 l9 @) P$ c; X, M* s

3 g+ J4 J' b0 S7 b) Y" Wask self [do-trust]+ j* g! W2 {$ Q2 c6 z. j8 _! @
;;
先求ij的信任度, _+ |  D! R( d  U

2 W9 |8 J6 e9 ?, ?* {if ([trust-ok] of self)! t6 j3 o2 M( P5 V) V) q- U
;;
根据ij的信任度来决定是否与j进行交易[. O$ v9 `! }+ }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 ]* c( T& L/ K- [5 O2 m8 L3 X% _9 w& W) p/ l% O
[

* u  }0 y+ ]1 l0 Z( f' C* b5 y/ I! [. ?6 I6 M8 a6 D$ b
do-trade

; z0 `' [2 C/ ]/ L, T0 v& R
/ W" c; m8 Y4 n0 H2 zupdate-credibility-ijl
" \# W3 X/ P0 j* m: \# e& t) B6 x

0 r2 p& s( j0 G) E4 vupdate-credibility-list/ y7 ~0 Y7 d+ G; |5 l( p
! C6 ^  x# u7 m$ u# o4 L

/ ]1 _5 y( z; N! P' Xupdate-global-reputation-list
+ G2 S4 ~8 N2 r$ j6 R
% a" H) s, s- [8 h/ @2 g- L
poll-class

  \# D2 N# v8 ?9 z5 \3 r9 E8 a; |! G4 b! ~! _; M9 }
get-color
! a: f% a/ B" i" Z1 q
, n' r5 o! b$ `# v
]]  E- W8 e( f2 Y( J

4 E4 J$ e+ ?( E* u;;
如果所得的信任度满足条件,则进行交易
2 D5 V* H( N$ x; F% A2 J5 n
1 U4 J+ ?, e/ |' d' i1 z! w[
% A* `5 k8 F0 ^$ ?; h
: k) I$ X" b/ p" B7 ?# I
rt random 360
  \8 A) Z/ \* h6 o2 h6 ^: S$ B

) F) h' F" ~- C' C8 I$ F  Rfd 1

$ m: Y8 n9 g+ j6 U5 Q; f
0 x0 g& o6 t( k2 X- C% ~: x; x]
8 |1 t9 @1 R0 V- U# q1 ?+ m) y; L
' }2 G8 R2 @8 `. N% k
end

3 j  H. R0 H. h/ B3 E( z
7 [1 c7 z7 {  X: n8 K$ `8 Ato do-trust
. ]0 A% A7 [4 v# Y, cset trust-ok False
- t- I7 N5 \* L: C$ r- d& I6 A
4 ]3 }: G" z/ l! E: ^

# r  g8 o- B# U1 X  |let max-trade-times 02 ?) y8 p/ |  h- t- f$ N1 X
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 i- ?6 t/ M8 y! R  Klet max-trade-money 0
9 n+ i3 L" p, H) s' U6 Fforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( s. V6 R6 j) {8 @8 nlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 d# d3 u$ k" q7 Y7 j( e8 _
+ {4 X$ m# D0 |* S" |/ d
5 X7 o6 k7 b' s) ~! X( ]  ?% W" b
get-global-proportion
; r" B: R- Q4 f0 ylet trust-value. Q$ e0 T9 {( D4 A" Z! B
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)

2 H5 R$ }3 o( }1 X/ Dif(trust-value > trade-trust-value)
6 H; [/ q& X* h5 U9 L[set trust-ok true]7 I+ W, O: c- _& P; n. T
end
. f' H  Q: \4 I% ?+ K( C: O! N& s# j6 ^) ~# J; g; d
to get-global-proportion: `- p6 j1 [' i3 K/ q
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 K9 ?: e( I) d% F& f[set global-proportion 0]
% [* a) d5 u- y/ @; L[let i 0
7 Z+ e1 A. o. t$ k+ _3 ]4 N4 alet sum-money 05 j/ ]6 m& C9 u3 V, ?* ^$ ~
while[ i < people]$ J2 w" {- w% Y/ H; b! u9 J( e% p
[
4 h! V) K8 t  Dif( length (item i
2 R8 k  f3 t; \[trade-record-all] of customer) > 3 )
  {5 e! g3 s1 I1 }( G5 T
[+ N; h' |0 T: p0 \
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  U5 q/ n- d  d0 a/ B$ D8 f]2 I0 ^2 t( W) ^2 \9 z
]0 F: P/ T* C& k, b0 g
let j 0' h. M1 O# r/ w- o: c
let note 0
5 M( T) ~7 U' h* |/ B& vwhile[ j < people]
- f3 o" X. s$ P0 r0 L4 y. n[" X0 C& y1 j8 n" n
if( length (item i
- Z! e- W& K% v$ T( i& M0 D1 N- F[trade-record-all] of customer) > 3 )
9 C: x0 G: @! o5 y
[* U8 X; b- R  ]! D; d5 A
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). m! i' o9 K% T- j; c
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 W& C6 |2 P" u
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) w4 I7 N- F6 C5 p2 f4 a* {2 i]
9 I( G3 A! U7 q) M' v4 Z- ]]$ P4 H2 x3 ~5 X$ {* F: H
set global-proportion note) _, F; N* k6 l# H
]
3 B: B( I/ {% V$ |8 R$ ~7 h% w2 P  Mend' }6 c7 q; v0 t, w0 O

& }" z0 X& ^! Uto do-trade+ D9 r3 V2 e0 J$ O" T
;;
这个过程实际上是给双方作出评价的过程$ g7 |9 O. c, i$ Q0 p/ f6 N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
% x5 {, m# i( E8 bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价: g, R. b; Q6 S
set trade-record-current lput(timer) trade-record-current
. u  B+ c( H2 I, y+ d' Z;;
评价时间
9 s5 t" P, j1 X, v) U# G9 Eask myself [% w- D( z, |% b& D) Y
update-local-reputation3 U4 a' P9 y: B2 w  D7 H
set trade-record-current lput([local-reputation] of myself) trade-record-current7 ]# G4 I9 T) `+ z
]
4 u% r2 [8 c- h+ b( g9 D; Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
" z% m5 ?4 j4 _" C;;
将此次交易的记录加入到trade-record-one
( G* G3 ]/ r& J& r% `* c" uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# x3 E. Q  Z, L
let note (item 2 trade-record-current )
- z' x6 L: c+ ?0 Aset trade-record-current
( f2 }" \% N7 g  l) w2 t) v% A6 @, m(replace-item 2 trade-record-current (item 3 trade-record-current))

' g* x8 E1 m' f; }$ d' z) lset trade-record-current
" I0 V, N& C( p! P) ?(replace-item 3 trade-record-current note)
* `7 S* e& L$ ]/ U9 o1 Y8 [" d9 j$ |* }+ t  j8 C

2 L) {+ }0 `( u# l; mask customer [
' ~/ \' E1 \' e! W0 @) {5 r2 l+ }3 vupdate-local-reputation* {9 s5 T  f  n: |# L' b$ b! c
set trade-record-current
0 J4 F. k9 n8 H# c% i: y) G; l; N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 {3 H' u( X* U
]
7 Z6 b3 c, R; V0 q% t; D2 M+ c" v/ o1 v( p

7 Y" f" d# e6 x" uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer6 h( I8 a& `0 a0 i
) _( i0 Z  T) J! t+ t
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
3 x' h: U3 I3 s8 F, u( Q;;
将此次交易的记录加入到customertrade-record-all
5 h1 y$ `" \$ d5 g) F6 zend% t& D4 O$ a1 _- w6 F: B
! C5 I  Z6 N& M4 q* w* g. I
to update-local-reputation7 s: B' P1 L: t9 V/ \+ o* L
set [trade-record-one-len] of myself length [trade-record-one] of myself
: J" L1 Y2 \  ~. f& ~; y
# ^/ I- ^0 V! y* j7 ~- [3 D3 O) T! Z
;;if [trade-record-one-len] of myself > 3
) [- E& t+ ?8 v: _
update-neighbor-total( J- q1 `9 }8 X) B1 i: m
;;
更新邻居节点的数目,在此进行
- M( M( ^+ X# clet i 3, B) ]: t. ^0 ~( N
let sum-time 0+ C6 k$ L- S; G5 T. w- |( t9 y8 j
while[i < [trade-record-one-len] of myself]
! {) o7 `$ [, Q[7 f' [# C" c+ M5 o& ~+ d# k
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 K* S/ u- Y* g$ }% b& ]
set i
5 Z; w* `3 ^: X( X+ d( i + 1)
$ l" F6 b: L) {3 p
], q1 ^5 d. T! a  y
let j 3. l& j3 ~) R( t0 q6 i. Q; i/ b, U' g
let sum-money 0$ |5 K4 h* q- R. p/ X
while[j < [trade-record-one-len] of myself]
1 X1 K# H- I4 n  v) M[; E% D" E- [' G9 m' C4 J
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)/ y: l3 g# G) c' p
set j
" |0 B8 C0 S6 J* r* t( j + 1)

$ Y, u) u' j0 Z5 s]
5 I# ?% K, c0 U' z" Z' blet k 3. u- B; Y. Y, K# H8 G: Z
let power 0
& q* q8 g1 W. C, |8 t% L, e8 s: ]let local 0& h- O2 U6 a  E5 {
while [k <[trade-record-one-len] of myself]
% s" W- q6 F2 J0 y4 @8 ~[% H2 [; S/ g0 C: ]) q
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) + s+ B5 U& q( W/ E  h# \" `5 m& G
set k (k + 1)
7 g; ^6 j6 `) c]: q$ Y2 U! j3 u# x  b$ O  P  a7 E
set [local-reputation] of myself (local)# |4 |! B! j  A
end
! I/ r  s) ^$ t  ^& k) y
  i- [2 W: _! }8 l  mto update-neighbor-total3 J; t- N+ _* T; \+ l  n

. j" s: y. I9 j5 ]0 \3 f3 k& pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ ^0 a) x: P, t9 j, @$ T5 m
5 Q: B6 z& [, l: ]$ \/ Q- J8 X

2 F8 T4 Q- \$ ~8 N) }/ rend
- ~1 M' P7 |* K  r3 c9 O! T6 ]0 i( X8 n, T
to update-credibility-ijl
5 S% M, l, Z6 j' G1 _* s2 U  l- Z
;;
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。
: j" |+ A- \9 _let l 0
# Z. T1 T$ k- H1 Pwhile[ l < people ]
1 ?. |7 a& N) M2 ~/ Y3 M" i;;
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
6 k; o" _- |3 i5 @[* H4 X( w1 |4 ?
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 S+ S! z- s$ C6 @% r
if (trade-record-one-j-l-len > 3)  c/ A1 k+ ~" W, y$ o4 q# Y. 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" i7 i; u- v' F- d7 u1 b
let i 3+ I( w" g% K5 \0 b+ T  F$ F$ X
let sum-time 0  L# e, s( C6 I. j
while[i < trade-record-one-len]4 w9 J" V3 c( m$ B
[! K& j1 k/ N' K" f' e
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ O$ ~5 E8 v( e" W
set i5 O8 |: ]7 |7 v% G& e+ M
( i + 1)

  _3 d. ?- {. K" I* \]: W" I) T9 E! t, c$ Q" e4 E0 S) J! P
let credibility-i-j-l 0- j% Y/ s+ ]0 l+ s  O; }8 `
;;i
评价(jjl的评价)( K$ @  F/ c; l: l
let j 3& x# o, A# a4 `- C2 p8 z4 \- S
let k 49 r" ]& C# J( l9 S* G  l- I
while[j < trade-record-one-len]
- a* g! @2 R8 B0 B7 [# w# K* `% R[
4 w  U; U) X5 K! p0 Swhile [((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
8 E. E/ H% s* A  Fset 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)
& `6 o; w" [, vset j
, g3 e, S3 z- e( j + 1)
) V0 m6 W1 Z/ O, }/ G) R
]# V$ A- G- z: l$ H8 \& R9 V
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 ))) C( Q+ E2 \5 V% w. P( j( D( `- }
& x2 }+ `6 d$ K5 b' {' e

3 K4 C. A# @" C! v$ olet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
3 ~' i5 W9 S9 ~- ];;
及时更新il的评价质量的评价
" i& `! M# i2 K7 g' ?0 Z5 `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
" W0 l% z  U. G2 B% R0 `: d/ w6 pset l (l + 1)
4 t. T: L5 m3 E: o! r]' c5 N9 J+ n# C' z" V
end0 P4 q9 f- H5 q; T

" q5 h+ q& C& _1 sto update-credibility-list
" m3 T8 k, ?. |; g! Q2 Olet i 0
6 R: A9 u; |+ O9 E/ Ewhile[i < people]
- w# i/ F5 B' j+ i% E. O! h[
8 H/ t/ i8 D* O8 ]( q) nlet j 0
0 `' C) x  Z1 P' t" b/ x4 klet note 0) O* {2 I  ^( r/ C# W% k. S
let k 0
3 L7 j( G  T$ P;;
计作出过评价的邻居节点的数目
/ B# y4 u- D+ V! a; bwhile[j < people]' \+ ]' z& ]0 H; @2 o) |4 `
[
2 T- w( S* F7 _  c& ]3 ?& \if (item j( [credibility] of turtle (i + 1)) != -1)
3 n  t+ `8 h2 E6 [  V;;
判断是否给本turtle的评价质量做出过评价的节点
! S# y$ l9 {: l2 i; K* O2 {[set note (note + item j ([credibility]of turtle (i + 1)))
* P* c0 q; [9 A;;*(exp (-(people - 2)))/(people - 2))]
* ]) N; X3 x$ t6 G+ N8 Q1 \6 |
set k (k + 1)$ W; e2 m9 c6 W% `/ W3 c0 ^: {
]
! d8 P/ f' n# T. @set j (j + 1)
6 a# u9 r6 y* _+ i]6 m( D: h1 u  P  O: m
set note (note *(exp (- (1 / k)))/ k)
! ]* ?8 ], S5 W- A- F" _set credibility-list (replace-item i credibility-list note)( {( I6 D0 Q% \! U2 u. l, H" z
set i (i + 1)
9 W+ |0 C6 o, N& n]: E# ~( m0 l" Z, `
end% `# [; E( n8 F9 Q3 _" U: V4 N

& O5 i9 g& w- H# [" P- r8 eto update-global-reputation-list
/ S5 \0 z4 M6 T  clet j 0
% E$ Z( ]/ r; L% r9 c! ^while[j < people]" e  o9 A$ t: p& M
[
8 s: i6 X7 x. Qlet new 0
4 E  b2 X; y6 r* K& B. e, L;;
暂存新的一个全局声誉
" u4 y3 D1 Z# Zlet i 0
& q- {: e) h, j& H6 ^let sum-money 07 `/ o+ v2 u4 {$ H3 R$ X
let credibility-money 0
8 h; ~/ z* Z, n  j% V; zwhile [i < people]; g& o2 o6 q5 t7 k; v7 w
[
2 Q* B9 h) y1 ~set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ L3 Z. Z/ H5 W' S1 wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
6 L' K! J# w8 q: }4 O* wset i (i + 1)3 l9 T: [- `8 b# c( E
]/ N+ Q. r$ T  S( @. E
let k 0% o3 a5 s  A9 d, c; R2 n$ S
let new1 0
, m: ~. r- o2 v* {while [k < people]: s* i$ M0 g5 u1 t5 F& q
[$ x8 d6 o1 }. U; b8 @/ ^
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)
  d) {' g3 ?' b5 Iset k (k + 1)1 B# E% B/ C" C: ]' B7 y
]
3 C+ c7 b$ i( I: d* ^0 Eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # e" p9 M- H6 U$ V' @9 ~! n
set global-reputation-list (replace-item j global-reputation-list new)2 ^! I: Y8 q) w  @# W+ X
set j (j + 1)
  g) a) I* D# B" m2 W]
- q5 p9 h& ^0 s7 j( {0 L$ g, Pend4 `; G' u, N! D* {# ]

; O% X/ v8 F0 g) H8 G
5 G8 ^3 O& w" a& F2 n$ i! q1 n+ }) |0 M0 o( G1 U
to get-color  o. E+ i& \# R+ t  \
! B6 G. K* M7 B% [4 g+ a
set color blue
) q# A2 C& h1 L  ]( L
end
! F: I$ y. J/ u6 |6 [  ?
0 j2 t" Z+ M6 o* f3 b1 i6 n/ F2 Lto poll-class
' T- V6 ?& b4 I9 eend) y9 [- p0 _7 M$ L) B$ a8 b

+ }4 q- J2 ]1 d4 y, i+ M3 Tto setup-plot1
0 j! X! ?% _6 s$ t7 V. O8 O- n) F) {! v- V2 F; S/ g: f
set-current-plot "Trends-of-Local-reputation"
4 Y6 N( K! G1 e; c
6 f( Q1 b+ U! W% I6 X9 C1 }/ ?
set-plot-x-range 0 xmax
. s. L. D9 {' y3 I6 l9 e  F2 @
3 Z2 y( Z1 W% n1 v2 A
set-plot-y-range 0.0 ymax
# f% w4 h2 }5 Q/ r5 u
end) M+ M8 z3 \3 X! U# Y7 n( {
6 j8 X) p, s1 V9 [3 i
to setup-plot2
% ^' Y8 |( g# W5 F! M  q4 m0 S* \" Q
set-current-plot "Trends-of-global-reputation"
8 x; U; j% ^2 u0 \' J; @- a

% L1 Y) }" L3 {, Eset-plot-x-range 0 xmax
# ^' ^6 p( q/ C, x) [7 e2 ~  c+ F

) P6 g7 E% T9 s+ o& x( U- mset-plot-y-range 0.0 ymax

  u6 P/ S% \) e! O2 Y2 Jend
5 M. [9 l; o7 u
9 o5 I8 ~' q" x. Z8 o/ J" Sto setup-plot3
4 f  u3 z8 R0 J! d. H7 K: F" F# N& U; e
set-current-plot "Trends-of-credibility"
/ s9 ~6 w9 Y2 f! i0 l6 e0 p
4 }) r2 t4 f# d# T) n3 J4 T( h
set-plot-x-range 0 xmax
* B# B& R: v8 h1 O* z& X

* m# R1 ^( e) M3 v6 K! xset-plot-y-range 0.0 ymax
' F% A: V% ?! |( d& ?% U+ B
end0 p/ ^+ O: {# S5 P$ @/ j$ V
4 }- @$ F+ O% T5 N4 L
to do-plots
5 _5 f4 W1 ^0 b& vset-current-plot "Trends-of-Local-reputation"1 O( t: O6 R5 c. @- P
set-current-plot-pen "Honest service"$ `7 R( O- I- q0 _
end/ `( j6 r" h% X8 Z% ?1 f
/ `5 x6 r; k* ?5 d1 M
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
' V# t1 l4 W% i% R, v
5 S. `1 i# A( z. q! K2 p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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