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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:
5 e# N- a. M7 j/ sto do-business
( u! g. e: V. ~% o rt random 360
# L7 G% f9 @! Y+ u! ` fd 1, T* ?5 x) X3 U1 ^; Y
ifelse(other turtles-here != nobody)[% c8 V: @5 {; r; W/ O; p8 S9 v
   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.* B, j/ f0 N- N% s! P* e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' S; e" U7 b! ]/ K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  c" |3 o; p, F3 |. N. r( s
   set [trade-record-one-len] of self length [trade-record-one] of self, u' N2 w2 k5 Z, U/ a& t
   set trade-record-current( list (timer) (random money-upper-limit))8 J+ A" v, F7 C$ O. q5 t5 @
: t; s; g- b9 ]
问题的提示如下:
  f$ A; T$ D; }+ z; O/ p) G8 U3 I( C; O! Y2 }
error while turtle 50 running OF in procedure DO-BUSINESS( W) ~/ G* I+ Z: E6 R" n6 J8 X2 \
  called by procedure GO
; }; W9 b* u0 Y2 u7 C+ S, \OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 `  r$ _. u  l
(halted running of go)
7 d& G& F) N8 H
( C: O1 d; g: o4 [' P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~~
0 ]  X* W# F% h3 I  s' L4 Y% H( v0 {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
, v8 L. G3 }3 c* _8 ?7 @globals[/ F. _) c" o3 R. V* s& J
xmax
5 z+ c! P' i' _: B4 j3 dymax' v" }) H- s) p6 Z! L
global-reputation-list' F7 Y# n/ s$ v
& B' q) ]6 b0 ]3 Y3 N- M
;;
每一个turtle的全局声誉都存在此LIST6 s! J; {8 x- c& F* f5 H1 p" A# ?# x. A
credibility-list
  R6 Q' z  n/ B;;
每一个turtle的评价可信度  W. a9 p/ F6 \4 W# e* B
honest-service
& ?  T* W; g8 q9 j) D. V8 Aunhonest-service
) J  ?2 a' F9 {oscillation1 [+ S1 X9 h6 T' \6 H3 ^: c
rand-dynamic$ ?6 X. N" y/ m& v( x' u0 G7 m
]; x+ G5 C& Z5 n+ \7 }, R& r3 `

- V# s7 j7 _7 x1 r6 F) Wturtles-own[
1 t$ O% l. Z8 ?: L- Otrade-record-all
3 X% z& ?  e% F" J/ G# |7 T;;a list of lists,
trade-record-one组成
6 i) h. y( Q: x) htrade-record-one' ~4 j8 A% g: Z0 R
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# {% r* M0 j! _: K7 A4 Z4 b
) H, ^' ^* q" O2 j' f0 ^$ v& @* ]
;;[
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]]
6 v7 y# T3 V+ |3 J# p: c+ M$ P' Q2 ?* d0 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]  t+ P) ]4 H/ P8 z
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
3 k, T* k  B: |0 c# x+ wneighbor-total
  k' G6 U" N- F$ ~7 p% h6 l0 c8 R;;
记录该turtle的邻居节点的数目
; Y! m( B: h/ P8 w5 r- R5 Etrade-time
; b0 Y+ L! Q4 U$ N3 a2 A3 n4 [+ K;;
当前发生交易的turtle的交易时间; r& e& ?4 N+ _$ w2 z
appraise-give
9 I! l3 Q) q% J; Z4 d( k- x! e;;
当前发生交易时给出的评价
, ]4 V% ?7 m  c( K, u9 D2 Dappraise-receive; G3 l2 ^8 t2 T  m, ?% v, g
;;
当前发生交易时收到的评价
# h( M: \. S: K" r2 L( \+ cappraise-time  v3 E, T  g) ~: j  \/ Z: ]
;;
当前发生交易时的评价时间) y1 S" V2 y- W& A- j: s, C! a
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: ~3 g4 D- D5 O0 B" |trade-times-total9 ]0 e7 k% i  M7 \2 Y4 u+ F
;;
与当前turtle的交易总次数
% r% E2 ]  i6 w+ B8 B# ntrade-money-total. K3 Y# K: l$ x9 V3 f% S
;;
与当前turtle的交易总金额
: ], o5 n0 K8 clocal-reputation
2 }6 q. h. p- ^/ t! P$ N; Pglobal-reputation
" Y9 i* T# e5 U3 n- Dcredibility- l7 L8 {3 o# J7 u1 B8 T
;;
评价可信度,每次交易后都需要更新* i5 }0 J4 ?* x# [5 |. Q1 D% N
credibility-all9 Q5 h( X# j7 k9 f& 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' d; @4 E% n/ t# ~

7 D2 P4 P2 x7 G9 ?/ ~( a5 M;;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! ~! q, }8 z0 X) s; M5 ~& \
credibility-one
% L! d. D5 O- x: K1 D. K- l1 G( 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people+ V+ B3 n5 G8 H' c! ]# \
global-proportion3 X$ h0 ?2 f( I3 L* L
customer
2 A! _# A/ I" \( C, C, ocustomer-no
/ F- U' n& a, r5 Ttrust-ok+ e+ o" I$ z* m2 Q+ {, B7 `) r0 C& x
trade-record-one-len;;trade-record-one的长度- x" q9 E0 _: g* ]) i6 ~8 Y7 X
]
6 j# D. |/ H& S2 l" t( W# a, ^& W- A# E8 O9 g
;;setup procedure: T/ p) ~. @- b
% F3 n. ]" K  n) N
to setup7 Z3 w' m" i4 o) ?5 M" @3 R5 i6 M4 c
1 I9 E8 y7 L6 D. v; B
ca

2 T# P* Z1 P0 {: U, J/ a4 [7 y; [7 q( ?9 w3 J  ~7 O+ Z
initialize-settings
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. B7 I- l  I' B
crt people [setup-turtles]

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reset-timer

0 \& @  G& I% O
& h/ z. m# T1 r# F! v# N3 Wpoll-class
. Q- p9 \- F( B

) D* q6 u* [/ m) {* ~setup-plots
0 x/ D+ g' x/ ]0 c2 ?% d7 V
4 G+ y3 M) X; _
do-plots

+ D8 _' D6 y+ n/ S8 |  ]end
+ u4 m5 f2 U" P* \3 J$ \8 Q5 A; b9 q4 \
to initialize-settings# Q' v& Z: `  y& f5 U/ [' T
+ Z. o4 {1 g% \4 Q4 G) v6 Z" ]
set global-reputation-list []

  d" ^7 x: h' z' S" e- n0 M% ~8 w2 Q( r- {
set credibility-list n-values people [0.5]

; y. B: j1 c/ g+ J" L0 Z- L) N- c8 `! Z( n. n$ d7 }
set honest-service 0
: D) D# K, [$ y' Z# n& a& w

7 ^% o# I# @$ @  ^2 ~- T  w' qset unhonest-service 0

7 C# C9 Y: y2 b$ K1 [& n, P  M' V( Y5 h. j" N7 L/ D( ~/ G1 b7 K
set oscillation 0
6 \- G( G/ h7 V3 S3 N$ N0 g6 r& t

/ |7 s7 P& G5 q' \( {set rand-dynamic 0
4 \* j+ ~* B0 V: T8 V
end( t7 X/ \  q3 s5 ~' K& I' h

: d2 m. {* A/ H$ Uto setup-turtles 8 a3 F; D& @8 i
set shape "person"
, m+ |0 E6 ]1 w, o0 usetxy random-xcor random-ycor
2 r, k* v' a* ]6 ~% n& a; lset trade-record-one []
) B4 G- @2 \* R2 ^; S  M! b0 D

2 O# b, @' d7 l" L# w* eset trade-record-all n-values people [(list (? + 1) 0 0)]
$ J9 M. l: X3 Y% Z7 i! c+ N! `2 g

$ h& ?% j  C) [! W( j* `6 oset trade-record-current []( Y9 `  u3 F4 [
set credibility-receive []7 ^5 w2 Y2 Q" s
set local-reputation 0.5' I  @2 q+ I2 `  f5 a0 Q" T
set neighbor-total 0! ]6 e; t  E  M3 j
set trade-times-total 0) l0 D8 P2 L* Z  ~7 Q) N3 H
set trade-money-total 0
/ E0 H" U2 p% ^set customer nobody
1 @, n* P9 Z% Q% K& tset credibility-all n-values people [creat-credibility]
! ]# L  O2 K3 i" B" Xset credibility n-values people [-1]
2 J% |! G2 l! e  sget-color: Z% y7 Y  y2 v+ l; d2 L# u0 C, F8 v) `$ Q
! \6 h9 a2 N" Y8 J: T8 T
end
9 A7 H4 m4 D) K  a+ w# C  q* R0 [: l3 Z7 V
to-report creat-credibility
. C' S$ i3 u4 G4 H/ P2 n0 T. @report n-values people [0.5]
+ g5 e3 L2 X- send' o& M3 K" V1 O  S

/ L7 G! O& j; O$ pto setup-plots  Y; j5 E' k, @' b
9 _6 c- W+ [% p# D1 J9 z
set xmax 30
' }: y+ T9 F$ Q4 y+ z
  U. \. F: ^3 ~: Q, r4 z* m
set ymax 1.0
5 v2 ~0 `# D4 e, t7 C6 r
, d2 _- p% j) T6 i9 `' g% Y
clear-all-plots

4 R! P% c- g& P6 s. q
1 Y1 [! B$ S! q7 j8 ?7 X1 B, osetup-plot1

' x9 G5 b! ~3 T2 d( _9 w- P" c/ u$ T/ o* P
setup-plot2
# B) O/ p8 v) p
9 }7 x; Y0 B, p2 z: U: [" W
setup-plot3
- D  b" ]$ `" b0 n( Y
end
" T- _$ ~) Q" X
" i, i# g* `. O2 o( G2 j# h;;run time procedures$ J: u3 V( r0 Q$ F6 H  N5 s! B

) K' s8 T* E- _to go* v' G$ e6 o7 H4 ]9 C
& e! g# Y. \' Y+ R5 F
ask turtles [do-business]

8 j6 h8 S* w/ j( X. Y( ]end
3 e6 E' T& \% l5 W9 ?5 R) \* ^; e% F- W
to do-business
$ e8 ?2 t' ^/ i

. E' A+ J" u( g: G3 |& ~' N6 @* s. [+ G" F" D, Z
rt random 360
9 L. s9 b) ^+ D( s3 i  z2 x4 v
+ t0 c& J, \. v
fd 1

6 k* p& I$ X: G' j4 V2 H% b8 B, V9 ]" W
ifelse(other turtles-here != nobody)[
: Z% w7 b; b2 S1 M: `: J, _! Z; E

  ]) b( a2 c) G, f. |set customer one-of other turtles-here
" N0 u0 p+ a. p. e% e( H, O: I
2 U6 J9 N7 m8 C* f/ W% I
;; set [customer] of customer myself
! H8 L: g/ O1 D( H7 ~

3 T1 o/ I7 F/ n+ V8 ^0 w) Pset [trade-record-one] of self item (([who] of customer) - 1)
, T9 f' ?  X/ e[trade-record-all]of self
8 L3 |' ^2 J& t& m$ C+ p5 S2 x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% f4 l9 f2 W& W; u. m1 ~& L6 b! e
5 N& D' L2 }  v" G# N, Z
set [trade-record-one] of customer item (([who] of self) - 1)5 g3 k: }& `! ^3 L  F9 G3 T
[trade-record-all]of customer
; J6 S0 v# n, l! W

, y) Y, ]9 q9 w) g0 g/ Tset [trade-record-one-len] of self length [trade-record-one] of self

1 o% Y: o4 d& U9 \% a
7 C6 u% f5 B: ^% _& `set trade-record-current( list (timer) (random money-upper-limit))

9 _4 e: G7 Y1 m4 b+ C8 m0 m( S' d1 X, y/ }
ask self [do-trust]+ A7 C9 O( @; g; _7 C! o/ A
;;
先求ij的信任度
4 e: V$ v/ P% o- O% B8 f
$ W5 @: m& Z7 ~) hif ([trust-ok] of self)( B% K4 ?: Q; c) Z# Z# n+ u- [
;;
根据ij的信任度来决定是否与j进行交易[
4 T* S" I. v" T3 Uask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
8 s4 c, m! `% L+ T: |$ b4 X1 A3 y, f1 i# Z9 N& R: j+ C' U
[

1 t7 d( G. e3 C# |1 M$ Z" a5 M" H5 N& Q4 a' ]9 C  m+ H
do-trade
) _. `6 @1 U& R% k4 F+ a, j/ u; j

: y  J5 u" h5 x, D2 \7 _4 |% S* U2 M, Vupdate-credibility-ijl
  L7 B/ h+ x% C  \2 T

3 b- x; h+ s& c: u3 Cupdate-credibility-list+ w. B5 e8 k, A

- F2 ]1 o6 P  Q, U. v4 X
1 s# i" ^+ y( u# m( hupdate-global-reputation-list

9 r9 u! U$ s& E3 z" T7 O( Y' S* c/ R# c. _' w/ u- M
poll-class
* K6 ~8 v, ]4 R$ O$ f. g

% B3 N: F% |' }6 f! j3 qget-color
3 ^. B7 Y5 X& t

5 C3 U6 P, D- m2 v1 M4 g% i7 E' l]]# c' ]$ B+ ]7 P& A
; C/ w9 @- {% D8 F
;;
如果所得的信任度满足条件,则进行交易
# d: k+ \5 a) Y5 N8 W+ E
3 ]' _. h/ F# `1 }[
/ j" i' F" p: R5 ^/ [

% n# |, a' r. W! u& @rt random 360
+ x. F/ K  |2 z5 V4 I# V0 h6 \

: y$ B% e0 |1 ?2 Q" [1 }fd 1

2 {! ~  V3 |* ^# [% e, r) i% K' J+ o; X
]

5 l- m1 V$ {4 v  n$ F$ m) g5 D- R
end
: p5 A& I) e- F

- i5 A& e9 f- \' Z; a- c* F( Rto do-trust 6 X, ^$ a  n7 G2 X8 G# Z! v
set trust-ok False: w1 Y, ?6 k, l

. R; R5 z9 k  G( n( v
* W2 f1 d$ h7 c8 ?
let max-trade-times 0
+ }0 k5 t1 [) I; H9 A9 O6 W- V7 g' s. Kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 A9 q' l  U( |( O0 Elet max-trade-money 09 W8 h3 M* b* T: S; |# J
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 C: n2 z0 t- W4 Z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))' c  I+ x- ?: a1 T

6 v9 X2 k- g/ z

0 W% e/ P& n! ^2 a; Xget-global-proportion
' G, [$ \$ T: p  `let trust-value
  D/ N: z' T2 g' |, `! u( flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
8 B3 M& K  K" {  w5 ~" a7 C0 l0 M/ `0 _3 }
if(trust-value > trade-trust-value)
9 c6 t' n" f2 k# \[set trust-ok true]
! Z7 `: M/ B" O2 Xend% G8 Z, ]8 Z  i5 ?

; @5 p/ u) d) V0 i8 [; w% i7 pto get-global-proportion# j' L( C$ M0 Z) q% G
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
6 f$ G  M. K+ K5 M/ ~+ M" V: m[set global-proportion 0]
% b/ Q7 Z. z, M6 j[let i 0
- U3 F7 N, T4 alet sum-money 0
; E$ D' V* L& D) P2 ~( W( vwhile[ i < people]. ^. \& e. m. b; [) o- m" A! ~* n# Y
[
6 a7 ~/ H2 {1 N6 _if( length (item i/ I' N- b1 I! h2 P8 V4 f$ v
[trade-record-all] of customer) > 3 )

/ R# a6 H$ x, g6 ^[
3 Z" P, n1 S- G0 c& d9 X+ i- B; |set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- ]/ m8 X  U  I, C]
$ R* }) o4 x3 }0 r2 B]$ j. K( W$ i& Z9 @4 l# l( \, A
let j 02 ~# Z# T! Q9 j% ~" |1 P3 u" O, j8 g
let note 03 P! ~) l( ?7 }" |7 L' x% r: P, Z2 l
while[ j < people]
0 w0 B" u3 S8 Z3 R' b[
) y$ h% k6 H" l2 \) o" Q2 e! b$ A2 {if( length (item i7 B" B+ R* s9 i  y) f* g; `
[trade-record-all] of customer) > 3 )
1 M. b" c! V/ h8 `+ f
[
9 [* E, K( v8 V9 K7 u$ U) Qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ G. X# |3 R1 w( p
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& F! |" y- B7 B. K[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( a( R" F* K7 V$ M( H7 ~5 ~]
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set global-proportion note8 m) w( ]7 I, `- S8 ^2 ^# ?* N
]6 I3 J1 w% l- l6 a
end
& _) l* W& m. S2 {3 g: \5 I$ z5 n& M) c1 @  k4 s
to do-trade
$ z& X8 O4 F4 z1 s;;
这个过程实际上是给双方作出评价的过程) E6 L+ L2 g4 ~: b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) S- ~- F  Q( r/ p; v7 \' pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% T6 e2 X, a6 Jset trade-record-current lput(timer) trade-record-current
6 S# A0 N8 v9 W) P;;
评价时间! Q. y2 I* N5 ]% t
ask myself [' G+ C: |" H8 I$ h# T
update-local-reputation- m9 }) ^, }4 T8 Y2 y: l5 L
set trade-record-current lput([local-reputation] of myself) trade-record-current/ T3 w( X+ E; k) S& m+ V
]: p6 I& i5 ?9 A- S0 Z+ i* W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself% Q7 m# ~2 ?! D- R
;;
将此次交易的记录加入到trade-record-one: Q# @* {1 s: M! t! y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
# Z" ^* A$ S7 w0 h& W6 |; Clet note (item 2 trade-record-current )- H: ]3 ^# D: s9 V7 Q
set trade-record-current
: \: j; r5 i0 t& L+ B(replace-item 2 trade-record-current (item 3 trade-record-current))

, Q! t, x' }9 l8 N1 i7 y" G& k! dset trade-record-current1 T7 ^, w& G7 p# G4 a3 E. N9 g
(replace-item 3 trade-record-current note)
0 y5 t( q! G& B/ E6 Y" b
' m1 V+ @: i( L, ~1 ?) _

  V, I3 I7 k9 P& Dask customer [$ E# z; f' ?$ e
update-local-reputation( c+ K5 T$ }$ s' N8 d
set trade-record-current
( M- G, {8 r0 M; ?(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ l( I5 j3 J1 i% ~$ `5 D]8 @& M- _" y2 [0 W  y# R5 [2 h3 \
3 c* y* e" L6 m% [3 o$ i
) q. k; F) @) F
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 I, Z" E2 f' A& F1 h) [- X2 m
+ o- p5 N' d, v/ a* b, @
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 [! t$ M* F/ m4 u
;;
将此次交易的记录加入到customertrade-record-all8 y) F, V8 L3 `7 F
end# J# h* O2 b9 l* l; L) i3 U6 d( C! G0 T
4 G0 m+ _- ]* \) _. ~8 |& d
to update-local-reputation
0 _5 Q- b% o. S1 ^9 g% vset [trade-record-one-len] of myself length [trade-record-one] of myself
: L. A( [  n3 O  ^" f" T
- p$ u$ b" U/ G. p1 @  s& D" U, C6 A8 x
;;if [trade-record-one-len] of myself > 3

7 m4 b4 D7 X$ z# R/ b. u# kupdate-neighbor-total. z) f! A9 F! w
;;
更新邻居节点的数目,在此进行
5 ]4 s) o- X/ r( _1 blet i 39 O" U" A7 G3 i- O, z" C
let sum-time 0
# S$ u' e: L. l$ c8 U% @8 R8 G4 z; Owhile[i < [trade-record-one-len] of myself]6 {5 O/ B' i# N: e
[- A4 h6 W" ^. b
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 t1 F1 @$ X9 n9 b6 z. Uset i( t# V5 p' c8 ^6 d9 h- A# o2 I
( i + 1)
7 {. d! m; W+ A
]9 V1 B! @8 D( H5 G+ O% n" _! Z
let j 3
* f4 a' R0 L/ O3 H1 zlet sum-money 0
# V4 J% A- g: V4 C6 r0 A8 x+ V( `while[j < [trade-record-one-len] of myself]
( H2 l& w  t6 |3 q[3 \1 c5 C# z2 G# a( p4 O' c
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" e; m$ ]  p! y$ j3 s3 d# N( d
set j
0 ^8 Y( U* U5 o( j + 1)

% y/ A' h/ [; u  F: a]# N" G: L, ~9 i& ?% A
let k 3, {) A5 h/ O% E( i7 G/ V: L% a
let power 0& X. _4 [, z  _* y
let local 0+ b# V* y2 `+ O  `% o- Z1 n
while [k <[trade-record-one-len] of myself]! t1 I. q0 [  h1 O% M. X
[1 ]7 Z$ P( R$ \+ U% h& g7 F, N& v
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) . k/ S, z- }! ~
set k (k + 1), l! j" l8 C% Z+ g/ h  x' `! L- n
]
! L" X1 C1 D2 a) eset [local-reputation] of myself (local)4 G7 k7 U* e* _2 i' s
end  ?: t% e; m3 L& q

" x4 D( ]: M( v  J' w$ t. Zto update-neighbor-total
  I& T7 z8 p# z( B9 V
  k) c' z4 Y6 w! mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  d& l- L9 o0 {( }4 V+ M
$ I0 ]& m! ?1 b5 Z# n5 s
& G) F* Y; i; P5 i
end
, {. H7 m" k) [5 i% i2 t% i
; a# D  j3 T( Z) `to update-credibility-ijl 7 d* y3 s. n( |& h* E8 f

9 m8 W, |5 F  f/ q6 Q) B  n! \;;
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。
: U+ H8 L( w" h- K9 t9 s5 D' ]8 dlet l 0
/ ]2 Q" B& ~5 B+ K7 Z5 Ewhile[ l < people ]/ i, J2 r; }, B9 Y- b8 `
;;
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
) I; s9 O1 E" l  ?/ c2 K. j' w+ \1 m[
1 Q5 t- }0 O9 N- Ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
( T2 d. ]9 a1 tif (trade-record-one-j-l-len > 3)
$ |' N/ x& u! W! W* O[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# z4 y; o( ]: I' N9 |5 C( i7 J1 J/ r
let i 3
6 @3 `* q, S% a! w9 E& R! Llet sum-time 03 I3 @; v7 u' M" [4 u1 h' c2 ~
while[i < trade-record-one-len]
  {/ f' l' C; a  p! x( e2 q/ E' R) s! k[
0 {8 h* \) v9 Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% y4 A% u$ w+ h. |
set i
  ~+ j: x; r8 Z( i + 1)
' d8 T# w- U+ y+ |6 Q3 Z
]
6 G$ V! A, ~' [& {; ?let credibility-i-j-l 0+ r% ~4 |9 l: H+ h+ d; o9 e
;;i
评价(jjl的评价): o5 W% y, a# K7 q9 b  _$ o
let j 3
: x' o: ]3 N6 f( ?% Vlet k 4# L( k1 L/ P/ H; ]7 K
while[j < trade-record-one-len]
) M- h0 P4 f! d* F[5 P; u3 i; V0 |) W8 Y/ T! B+ i5 D! v
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
- u+ y' a8 [4 o0 C; G7 P0 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); ]: W' w5 H7 ~
set j( Q, N% ]. d8 Z) _% ^/ E- J
( j + 1)
. z% ^( t8 G5 h* O) Q
]. [$ k4 T+ ?" X0 \$ k: _9 D4 {* d
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 ))- H' _4 L5 E( ~+ |

; k. F$ ?8 v$ G( \! S4 m
8 U3 b: Y( k0 B/ Q8 c- t$ t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 K& [! Y- A: F0 x# g+ o1 J;;
及时更新il的评价质量的评价! q5 \5 w! A& M% B, W8 N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], C6 W' n3 v# y0 c' N
set l (l + 1). @/ ~) U4 m. w
]
" ~: {$ h' c( x5 {5 \end
. ~! k, I* V# ]9 S* p& @" ]) @' u
9 r% {- `+ T! `to update-credibility-list
) k) ^" h5 X8 f1 L  \; r6 u6 w- Tlet i 0
# f& ~7 j" [' A5 Y  R( H0 j! ^while[i < people]5 @0 H; K/ J5 |0 c
[' S! i$ @7 h! M; J
let j 0
2 o# q% J+ i" }let note 0
" j! A# X6 @; Ilet k 0! t  W5 l) m6 z
;;
计作出过评价的邻居节点的数目" ?6 z  |+ A$ {( m. Z8 n" K$ v
while[j < people]9 F  @; ?. M9 p& O% ?5 N
[
7 S& p' _7 o' a/ [0 d0 N# zif (item j( [credibility] of turtle (i + 1)) != -1)
6 \% U7 I6 _" H9 h0 h, y$ U) U;;
判断是否给本turtle的评价质量做出过评价的节点
' Q4 z8 z& K8 V! K* }$ E[set note (note + item j ([credibility]of turtle (i + 1))), Y. I, v4 J0 n4 F
;;*(exp (-(people - 2)))/(people - 2))]
; F5 o8 d# `4 g, i4 D
set k (k + 1)8 C& ?/ g% h0 o( t/ n6 {8 V
]
& Q9 v$ R0 o9 uset j (j + 1)
( J( E, N# A+ c]$ q% m8 @  W4 F4 A  Q
set note (note *(exp (- (1 / k)))/ k)) Y! F* o  N% X( K! }( n+ k8 j
set credibility-list (replace-item i credibility-list note)
# u  u; U/ F0 Yset i (i + 1)
' f/ C/ C$ r2 r9 r: |  D5 u]/ _7 c/ v. |3 Q
end/ f1 }8 }! f% X$ t/ C# ^' y

* _) [/ C% b8 |6 xto update-global-reputation-list: b5 A+ _& K/ E8 f1 M3 D* @2 x' R
let j 0/ ?+ i$ s" [* v
while[j < people]/ k- f4 T* O, \( p
[* w; R* W. v" v7 D+ s" Z
let new 0# ?* V! e$ A' L
;;
暂存新的一个全局声誉
; [$ @9 S; d6 V- H# Flet i 0, [* u6 q8 l' n- h8 R3 o" k( ^
let sum-money 0
4 [) h( B- z6 K9 q$ L* ]: t! Rlet credibility-money 06 t; O( u* m/ x( l! X+ D
while [i < people]( B5 ^! V5 w) p9 r4 ~$ F  e& l
[
! s  j! k1 O. Q, F+ Hset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 ~- {  a% x! ^0 i3 t1 o
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))- O% E% {" I) r6 g5 l+ [% D; d( W
set i (i + 1)* ]" Z0 q; V+ }8 i
]  w) w! t/ c, U0 ^& N/ n
let k 0
6 f- r+ r3 r: rlet new1 0
! g- F. K9 }7 M7 C9 u+ U$ Twhile [k < people]  w4 H! J9 i+ s) h
[
( \+ ]: Q0 c. c( x. ^: n/ J1 Dset 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)  R/ ^& X0 q( S8 [
set k (k + 1)
8 A' o6 x9 o. _  ?9 A! ~]
% U) c4 i  I0 U! B8 B- t, c! _( [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 L$ `5 D4 H5 q; T4 r9 J2 jset global-reputation-list (replace-item j global-reputation-list new)
% c7 ]( E% v! z: @9 h7 L- gset j (j + 1)
5 j! x$ r6 f5 l]
. l# P" g$ D! G( R8 K$ I! Oend5 M: W7 d: K5 e# k( Q1 b5 F8 u

, ~5 ]  W0 V4 P  }7 |2 \+ l8 x- k6 e% D' V
1 f9 y, t8 c6 I' t* J; h
to get-color
0 }; ]3 J! W5 c. t4 h, I& C1 k5 Z" Q" f& H2 r& u" G
set color blue

8 {# {( }8 v  Rend
/ j7 z# s6 M" h* y$ N/ J5 m
0 \( j# k/ f3 y3 Y* R( u1 V9 k$ C8 oto poll-class. p( f) s# H0 Q2 X( g! i
end% ]8 x7 E$ C2 v6 F# {/ Z2 N
/ h: ]% x8 h2 k) t
to setup-plot1
; T: `) ~: }* w8 D6 g% H
+ w- q; {9 n5 _set-current-plot "Trends-of-Local-reputation"
0 A3 \+ |3 c% E6 y% h
0 P& Z) n( w: p, H! Z
set-plot-x-range 0 xmax

1 ]& m( M5 e# e2 e% {
$ I! a3 f, W" Z! v' [# Uset-plot-y-range 0.0 ymax

5 n! f* l3 U1 ?end
+ f% t! E, o+ L; S4 i0 U% o/ I6 J  |/ t0 i0 L
to setup-plot2/ \+ r/ d0 L2 J% w
  n* A2 e( T9 w+ t; e% k" m3 ^+ F8 N  d
set-current-plot "Trends-of-global-reputation"
: ~8 o( F( W4 I

, P1 k8 c' c, s4 cset-plot-x-range 0 xmax

. D+ s4 ~6 f/ \& k/ h+ `- G# [) H2 f& d# {1 G4 x# S
set-plot-y-range 0.0 ymax
( f! G" _2 w+ [* p+ I9 o# I# F0 t
end
3 e1 J" M) a& f: {( F3 Y/ M' Z5 K1 g4 C) P$ M4 E( j' ?
to setup-plot3' [  j$ e& v  d6 a1 a
& W. O: A) g7 t- u9 o( I; J
set-current-plot "Trends-of-credibility"
1 h( `; x0 M0 V+ V. t' C* _9 P

; d1 ~, ]3 i0 Q& N& [set-plot-x-range 0 xmax
7 F" l4 q* {  _7 |! y- v
1 c$ p! u, N) ~& M
set-plot-y-range 0.0 ymax
2 b" e8 R5 ]3 m" F* a* s$ G. e0 h
end
. F! I( I/ G1 \3 X7 c: v: s% j- s  m: j; I5 o
to do-plots
# c, ?$ C# q+ B9 C- |& Bset-current-plot "Trends-of-Local-reputation"' d% e% u3 Y8 y# b) O+ x" D7 A
set-current-plot-pen "Honest service"
+ i- K" u9 k( p9 s* u' M( ]" @end
. {2 l4 K$ N6 C
# F/ p5 Q$ b- V1 u' i9 E0 o[ 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.
9 ?0 R; Y5 q5 l; l' [8 \/ L' X# R0 `& u/ q9 ~" }; A
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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