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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:6 H: s8 k& t9 W" T
to do-business
* |, _% q! c3 }3 l, A- n  | rt random 360& {6 O1 @3 \" a$ w: I- O/ b( V# o$ c% V
fd 1! S- r9 T% b" \; h) u8 A; |) D
ifelse(other turtles-here != nobody)[
5 J8 r4 A8 A" h2 p+ Y5 F8 @   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.
/ e: w9 }; n! @1 c   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: D7 A' ]) O) _' |) b   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# ]% L* @3 K7 ]$ X" M# g   set [trade-record-one-len] of self length [trade-record-one] of self
2 \7 O5 g! S2 i5 v   set trade-record-current( list (timer) (random money-upper-limit))
& M0 [) x8 n5 R' p! c; s, f
" x8 _4 ^6 T& G; s# s. l- U# u问题的提示如下:
1 O7 E' J9 v. P: q! |; ^) y" ~0 L: W6 ~8 ^3 _" g
error while turtle 50 running OF in procedure DO-BUSINESS( e6 n" C; z1 |( l) y4 I
  called by procedure GO
+ C; \  {9 B/ h$ G4 hOF expected input to be a turtle agentset or turtle but got NOBODY instead.6 ^( H% r: w: `& K' s, D  X1 R! {
(halted running of go)8 \' `% [' S4 S# i' E. b: L6 O) _/ B

5 u* W5 u. h* \. v9 K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~~
/ d! L$ s& u* a( [, J) `, o" p% j. V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
- \9 x3 ^7 h- U$ D0 K$ kglobals[
% ^* ]! V+ i5 \3 |; |7 [xmax
2 B$ R, u+ t5 o/ C* q7 |- zymax  ^7 z, t6 Y, r
global-reputation-list
8 j9 @" e+ Z" d2 }* j- w, N- M3 z8 O. ]  l3 R' {2 ?
;;
每一个turtle的全局声誉都存在此LIST
$ {" [$ b9 S/ r. ^; j! Icredibility-list+ J; x: ~/ O7 y- L6 z* F8 }: [
;;
每一个turtle的评价可信度
: T$ v, e: r( t* p/ E3 [honest-service; B7 y' G0 n$ E* [' k4 G' l
unhonest-service
7 k; L5 d& C$ I& aoscillation
4 ?; |' h2 N+ }( L7 Crand-dynamic
% E2 U- _0 u( i7 `6 M$ Q]
5 V0 Q8 x% C/ j+ J8 `& [6 z( @
turtles-own[
1 K( m3 o- m' _trade-record-all* C9 x( c3 g" a# n( k" C2 ~
;;a list of lists,
trade-record-one组成4 W4 H8 Q4 H! X5 ?( T" I
trade-record-one9 e/ d1 Y! I& F* e# b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
5 I% U" [/ w$ Z4 q  q6 y' {. K$ E# r' H# F1 q& R
;;[
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]]2 L, c& l. Y4 `6 G3 m5 V3 U
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]
( _- E; s4 A4 c" Z0 N+ icredibility-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
1 B% B* T5 }% m. x; R# n7 Mneighbor-total  f; [+ o- M3 w4 o7 I
;;
记录该turtle的邻居节点的数目+ X& m6 z3 _5 p
trade-time" p, E& e0 d% s& ~% \
;;
当前发生交易的turtle的交易时间3 l' }/ V' F' `7 b% S5 B
appraise-give/ a6 w1 r/ s( l$ V- j7 U
;;
当前发生交易时给出的评价3 m: A5 ^: a2 e+ d! n* F
appraise-receive
, t& @' h" {' W1 F- w;;
当前发生交易时收到的评价* L9 I3 c- X0 O0 d
appraise-time
! Y0 k8 R4 I$ ]0 @: p: v7 O9 `+ e;;
当前发生交易时的评价时间* C8 t& U# e& R. s+ o, X/ ]
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( Y% {# P3 a! x3 Q* X1 n: a: Itrade-times-total
. u& b* n$ |1 y! w;;
与当前turtle的交易总次数
( v+ c' ]! m* x* [2 \6 ?& Ctrade-money-total
5 ^2 I# |6 d7 Y  I;;
与当前turtle的交易总金额
8 ?5 T9 E6 a! O0 c" Elocal-reputation
7 r7 E( Y: p  g5 ?1 iglobal-reputation
; `0 h. _# n8 H0 n4 ^credibility
4 d6 t, R/ k3 }0 W* L;;
评价可信度,每次交易后都需要更新9 G" }$ A2 S( L8 x
credibility-all- Z- N5 [( a0 s( ^
;;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! Q8 f& A' C) f

# _: I/ d; J( `$ h' N/ i, i;;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
+ u; U8 {/ S* |; x& hcredibility-one2 l) h2 E- Q0 l+ g* @
;;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
+ `% ~* K) j0 v" j% l/ Dglobal-proportion$ q  H0 r* n/ }5 H5 a' a% M' ~$ {, I
customer3 _3 |9 M: a7 d
customer-no
  `6 E3 F! j9 H; V5 x+ ftrust-ok
, V  p. V$ c+ R6 d4 otrade-record-one-len;;trade-record-one的长度
  R4 M) {! V' B8 m' \8 j, o]: H, ]' n0 M5 B0 T9 E
# R# W' i0 i4 b
;;setup procedure- k. Y  w0 E- c8 G

4 O% z5 N! z  l  N( @5 l; eto setup* s$ q$ W2 J4 {( x: Y- h. o

) T: k* o4 E8 [: dca

0 J3 \9 r1 U' b% r+ C  p$ y: H" j  o0 v5 }0 _$ A
initialize-settings
/ p$ e- R/ e: g( q9 I2 g
6 r0 ]3 n0 y" y4 d% r! d
crt people [setup-turtles]

& L: ]- O' I- W( y) U
# {1 \: Z* r$ f( I3 P. z# F, Yreset-timer
$ _* W. f0 U8 P
& K) S7 {  q3 P- P' F1 u
poll-class

4 c4 |, U% a( r9 c% y1 Y; ~' Y5 E' J2 ~$ v# F1 \* z$ G
setup-plots

1 D' k- `% j6 o0 D/ a, {5 J; o( L3 I8 J
do-plots
- d5 s7 e/ Q. n1 _' U( X
end4 [9 o" @9 N: Q5 \
- v3 I9 c) K% |) N7 Y, \( k# d2 d
to initialize-settings" F3 B& Z- U1 s  d6 H  B0 T. Q+ c
9 f' B3 l4 K* v" @5 X! I
set global-reputation-list []

. B- L+ e6 a4 o6 t+ `! Y% p( y. v4 R- G
set credibility-list n-values people [0.5]
7 q9 D) Q2 ^. i
4 V, c: u- G. o9 t
set honest-service 0

" @' i1 T+ P9 A$ A1 j% D6 _  [
set unhonest-service 0
9 {1 G1 m" p9 f
. Y* i+ Z% T0 s/ l9 @0 h/ ^2 D
set oscillation 0
* a2 v! A( _/ C# \, ~% f

7 ]7 Z. x! \0 N. D5 qset rand-dynamic 0
, \, F2 l6 w7 z0 w0 u; |
end, O2 n" R  {5 w2 g
8 Q% v" Q, M, C, Y2 X* R
to setup-turtles
& F+ y! r8 M3 x& t1 A3 @+ aset shape "person"6 H/ e7 V0 W) W7 T
setxy random-xcor random-ycor  ^' E7 \0 H4 o5 v. _* B
set trade-record-one []. m+ H  F6 P1 V, i% T" g
3 n" ]1 T' v* e( `6 }' z
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 P/ U! ~, [, d- k! F) V: R; \
1 x  V: X9 F! c
set trade-record-current []9 x3 Y# e  g: z
set credibility-receive []
9 t0 b1 Z8 j& T4 x% X1 Zset local-reputation 0.55 N& S; {1 b- a0 B8 k* L  ^1 j
set neighbor-total 0
  V% s  F) C- O6 Eset trade-times-total 0
# H0 e; T( o  Y; Dset trade-money-total 01 ^5 [3 r1 Z# ~6 t- B
set customer nobody
( H. W/ p  h3 @) G1 [set credibility-all n-values people [creat-credibility]
: d/ Y1 n, V* I+ h( N: f. {set credibility n-values people [-1]
4 r4 r# z! m$ n3 rget-color
8 h0 X( R: m; V5 ]7 C* @# g
( I0 `! g1 ]! {) `8 h
end
% D3 Y" n# e9 C5 j& N( C
0 ]4 c7 m; D6 w) x4 f! ^to-report creat-credibility' S+ y1 P5 b0 l
report n-values people [0.5]
. X  I7 d( }; |: h. b: J0 u" ^1 Z7 ~, qend
* Y) T1 ?2 N  [2 F: a: p
' s# P' K% k) jto setup-plots! s+ E1 D) V9 |0 Z: F  d5 J5 L

6 ~3 |" ]* M+ i* C  ^2 vset xmax 30
2 u/ z1 k. q! U+ k$ w

& l% r4 P& k3 I$ r8 H: @% Nset ymax 1.0
% f) Y5 g" r/ s. G

7 I; O9 ~( l: J$ b; O7 C6 \clear-all-plots
; B8 f) D$ i6 O$ @# C# T& f

+ f# l* J9 y" w7 Y) P6 v4 X$ ^$ f4 Csetup-plot1
  D* q2 V# ^/ t8 S
+ U4 N5 P8 c( |) ?+ v; [5 D2 n# ?
setup-plot2
. W! A# \# @1 h2 y

1 N' U2 j: R' k  K) F) a2 m% V' @setup-plot3

2 ^! o1 l) t  }1 Z/ Y! l" Gend4 B, B. F# E% B+ R- K; l6 C

/ |, z' `# O0 B5 k! I: g& ];;run time procedures
; {6 @8 n8 l5 X* v$ D- b4 L9 e$ F! N
to go
6 H* c) F/ ]1 B( F& E  H  W+ A/ b: i, g
ask turtles [do-business]

1 J# [7 F+ m. z% V" \8 _, ^3 tend
, w0 S' X; g$ H: d7 y( N7 m1 E+ \2 ]; l( m: d5 S7 E* E. f3 H
to do-business ; p  A; [) }6 p; ]* h
5 d% ?" t/ A1 k
7 B/ `# n$ u1 W; e; T4 X8 z
rt random 360

7 w! q+ ?5 q8 y5 v) L; m0 x2 k; M4 y* G
fd 1
( E4 G" M: d3 @  I

! v# }) G" \5 R3 _' S( Mifelse(other turtles-here != nobody)[

* V$ P! X' g& N) m. y# S0 R* ~9 q
set customer one-of other turtles-here

) j% z' ?5 q& k3 D" M8 q
( B7 P) h- [$ t- s' ?;; set [customer] of customer myself
2 I% P% a: t) D7 Q

4 u4 y/ V% G9 U, pset [trade-record-one] of self item (([who] of customer) - 1)
) p& o" z1 f7 y6 d[trade-record-all]of self
3 Y: s& t8 ^0 s" U' @% _;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 R1 D9 l: g0 X) Y; \% u; V7 f
7 G6 @3 S4 c7 i3 k3 }/ V# S+ Zset [trade-record-one] of customer item (([who] of self) - 1)
3 t2 m0 z- R( _' o* ?[trade-record-all]of customer

& h0 M6 X# i4 b1 ]* \
" |6 f# q$ D% `) O; ?set [trade-record-one-len] of self length [trade-record-one] of self

6 s, @& D$ S0 i9 J" d! E# E! i. s& _+ o, {: \
set trade-record-current( list (timer) (random money-upper-limit))

3 y9 }9 E2 y  T( v7 g4 F+ r
# t0 ^* e, p9 g4 zask self [do-trust]
! d# C3 A: T) G/ u- ?;;
先求ij的信任度& [5 _2 g9 ^3 U3 d. m( R" [* l$ i

; E% A4 S4 V; a8 X: Uif ([trust-ok] of self)
. ^( Y4 k& ~. L  R;;
根据ij的信任度来决定是否与j进行交易[- L8 X+ D2 V* k: _. B" D
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ v$ |  T; ?' L1 M% }, S' f0 B# G3 d( ?9 e3 g8 l
[
5 C/ i3 J3 c) [+ ]! D( s  E

% u8 [5 [& l: m) V, N$ }9 Bdo-trade
& V% r. e# ]5 J/ Q; p" n0 J

6 O3 g8 Y/ _  ?" B* {  rupdate-credibility-ijl
/ I: l% L, P( v1 i& {2 k) s

9 D& N: I; s; S6 oupdate-credibility-list
/ J, \( c0 M8 D3 @' M  I9 ~1 L

" ^, s3 E- V7 B# l9 u! ?! o; D/ z1 W' Q. ?; C" h" V
update-global-reputation-list

$ {$ h3 [/ ?5 h8 m+ a" |; r* ?* Y  o2 s. V
poll-class

2 @: ?# M; {  W0 a& \/ H4 }+ r! w5 n% J8 F( g; A; x
get-color
  @* w# H2 V+ L4 |: i' p5 [# F' Y# B
' P. \5 W" Q0 W# `9 G
]]
% f2 K6 U* ^4 k( o* T6 F# E2 L% U- A# |" z
;;
如果所得的信任度满足条件,则进行交易
# X+ T  ?* n8 J3 }+ ~+ I/ `2 O
$ i- C2 M4 p0 n7 ?9 g0 \* o[
  c' P1 w- |8 ?

, U' f3 c: `' ^3 A5 M! c, S& Art random 360

& I/ O& i7 J; ]3 |0 ?, g8 r/ u9 {. m1 b  i
fd 1
6 g2 M* l' g/ K/ W4 @
9 Q+ v. R1 v& y: j5 b
]
+ F: r. a6 s& [: h" R2 ]
. V4 s' g1 ^7 `, C
end

6 ~% _- A! l! q5 h1 d- c; f% e- l% H
to do-trust
: R4 I5 ~3 s- pset trust-ok False% V3 s& X9 t" ^8 R. z, D

2 j0 a; z; U6 G/ j, p% e

; L# P# N% s6 G7 w6 Ulet max-trade-times 09 ~" f( i* R/ \/ V5 @  _
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- p/ k+ @  C7 o) y2 klet max-trade-money 09 q9 D3 B# d8 b% W, m0 `9 c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]7 x, Q& `6 m: o7 l; d# E
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: n& P8 `7 k1 W9 W1 \! h1 C  S* p* ?, |7 d6 E

( H" F. v* G+ f2 oget-global-proportion
2 ]( R6 Q% V  w2 Klet trust-value
5 f( ?  Q  X/ R9 R% Y8 R$ ~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)

( z9 Y2 [4 v5 N# I  iif(trust-value > trade-trust-value)
& n& a; s& U) J0 q( z[set trust-ok true]3 A9 f' F  E- ^6 E% g
end
; L$ Q# ?2 P5 K/ P# D3 ]& ^1 v$ o5 i9 h' t" x
to get-global-proportion
+ M( L" I8 L0 g9 `) N. |( Sifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 D' O& j9 j  N[set global-proportion 0]8 x9 r, r/ F0 ]
[let i 0
7 ?3 y, w& V1 n' \1 z4 ^; `5 _let sum-money 0. `7 m- a3 I2 \. [4 K
while[ i < people]
% r2 T8 Y( }9 L' i[
* ^6 y7 i% h9 F8 l3 cif( length (item i! p) B5 W6 @' H9 ?3 p3 s2 w4 y
[trade-record-all] of customer) > 3 )

) Z5 {- Z$ j) O6 h[2 q9 }) G! P  o2 W: p4 k# O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 S) A; t5 a+ A/ I
]7 d$ _" e$ w, m
]
. O4 o, a8 B/ x: c' P/ C+ mlet j 0# X5 i/ u/ t/ J# z2 l2 r
let note 0
) z  x7 h- W" m# N3 w9 Bwhile[ j < people]
7 R1 g9 O. L! ^2 h[
( r  D% U' P2 l2 y" B. U/ uif( length (item i
8 f/ k3 O& Z' S6 z[trade-record-all] of customer) > 3 )
& D9 n) v( }$ n5 n
[4 x3 L) R! s/ M2 W) Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 j, f3 Z, I) w% S$ m5 E[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" S3 N  S2 N, B% n1 Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' Y+ B/ u' d3 V& M0 x]
/ a5 _7 |( n) h" Q2 |) E1 I  x! B]* H5 u9 s3 {2 y1 O
set global-proportion note. G: S% W& e) p8 q5 n6 W
]
; T) r7 M5 L! w3 _* |end3 q. I  \, z0 s& y- w

/ ^# Y$ R- o9 ]9 i3 f9 y' d0 \8 ~& Fto do-trade
  @7 Q, h0 w8 ];;
这个过程实际上是给双方作出评价的过程! J+ e9 z! o% u5 O9 r' U. A$ Z+ }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! w/ `7 j) A$ L' ]' C  v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) J+ Y3 V$ K& P8 V  A" l
set trade-record-current lput(timer) trade-record-current+ E/ @9 M  E0 M3 i! N! d9 ]+ q
;;
评价时间, D% ^# A6 a9 W* F" u
ask myself [! g% t$ x( o( J: E2 j; y
update-local-reputation; u# N1 N) d; ~. D# O
set trade-record-current lput([local-reputation] of myself) trade-record-current0 ^4 W1 Y# i9 ~7 K5 M/ [+ V
]+ `; G& ]5 P' x6 u, u" ]
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- V, }9 q* r& u' y- Q( Z
;;
将此次交易的记录加入到trade-record-one
$ {5 T, s0 l' P2 c  mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! g$ z- l/ A  ?- `3 Q3 `
let note (item 2 trade-record-current )' Z* N! ^) V- t, \
set trade-record-current; ^' Q  u. H; n5 n
(replace-item 2 trade-record-current (item 3 trade-record-current))

6 d$ q8 z8 r8 S+ q- r2 Tset trade-record-current
0 s: k6 q7 {7 ^/ X9 t, H(replace-item 3 trade-record-current note)( t. ]( p- A/ x& ~

: M/ Z% G6 F3 G

9 L. [' `* k" [: Y; P7 y" ]ask customer [/ D. G+ G( L- ~7 X+ d
update-local-reputation- s2 G8 U/ p% z8 w! o! V
set trade-record-current
# ^& L8 w& f* u; _7 H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ f1 [$ ?5 X( U4 L" N8 r/ h
], q( S- j! f# }: U; m  z. P3 b. z* r

! B; ]4 W6 {/ `. T( B" F) F
5 [8 `' J9 |4 E. N: o
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& i$ ^% c8 w) Y+ t

1 ^* `) ?# M: F+ x1 Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ N  g# [# _2 z$ u1 _8 B0 m! s$ h
;;
将此次交易的记录加入到customertrade-record-all
' |8 E% P' a2 D4 {7 T( _2 `8 ~end. u: Z; M* m8 }, x, H0 A' Q. y  {

* a  N- x' L' ~5 ~. J5 ^2 Bto update-local-reputation# k$ _3 v1 O8 n% V; A4 I
set [trade-record-one-len] of myself length [trade-record-one] of myself
% ]% c) V3 s5 ^* C
- Q* O, r4 F7 v. X$ O
5 J& B- v4 U! W1 c* U& M8 d$ A;;if [trade-record-one-len] of myself > 3
4 m  @* s' E6 q! W) N+ n6 Z: q
update-neighbor-total9 `  g0 o+ }' Q- ?; `4 s
;;
更新邻居节点的数目,在此进行
( X  ?& I( `5 R* z: h' R- Clet i 3, d* x) F( n7 U/ c' f% b
let sum-time 05 C# F% j- ^# ?) Z/ o9 J1 O
while[i < [trade-record-one-len] of myself]9 D! r0 I0 T% Z' P6 W  u
[
8 E5 M# W# j: g0 w  ], Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" I* L* f. F3 ]set i
3 I% s* r% ?. L$ f* H+ _2 N8 s( i + 1)
+ O: Q4 {8 J9 z- t, s. ?) h
]5 E) {  Q' b) z) \; `% g1 z9 t
let j 3
* }* P/ K5 Y# r8 S& \- U% Ulet sum-money 0
1 U6 d' y( h0 w0 b5 L2 Vwhile[j < [trade-record-one-len] of myself]2 I- y; r$ {0 B+ ^- x( _5 m5 P
[  L4 Y" U0 _( B/ ^) s2 n
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)
' o6 D$ I( K3 Z) a: S2 G5 U; y' t7 uset j" Y. y, s, e, d8 y) J- F/ A
( j + 1)

+ W0 b6 z/ W+ m/ B: X7 Y]5 C# @1 i1 S. Z6 T" c0 t
let k 3
  f0 j( ?8 w; [( `- b( V: olet power 0
2 p+ r9 R5 N4 mlet local 0: Y, G% f, b; b* L- U" N7 `% ?
while [k <[trade-record-one-len] of myself]3 Q. x7 [. j7 l* `( h
[
( K# Z0 i- l- O, [& oset 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)
2 u" l5 s8 \* ^5 z4 l7 f7 Iset k (k + 1)
, N1 T! T, |, K5 j( y0 t]
& H) u' t  e$ uset [local-reputation] of myself (local)7 S8 u/ w9 Q  |( e% C. U2 c, n5 ]0 x
end! Y7 k( \$ ^3 |! b

0 S& F1 j" Q8 _: a/ K; l. pto update-neighbor-total
1 p, u. x; a$ a4 o  `3 ?& u5 b1 h. j3 R
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], J( c% L) _1 w. e

" r3 n- R) X- S& u

. P- z  ^. B9 S' t2 `( Dend
7 T. \# u/ q/ C5 m  z$ T* }0 _( I' e
to update-credibility-ijl
; d, h1 j1 N; k& z  C1 U: w; T$ F# 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。
9 y: o- P9 y: c$ t- J" i& P$ c. Llet l 0. K* n. E2 X6 t
while[ l < people ]. I  H, [2 \/ Y
;;
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
! m  K8 g2 h( ^/ c[3 R2 O  D8 n' w3 b6 J0 U0 l, j" v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: j3 P' [8 Y; C: p! f( @if (trade-record-one-j-l-len > 3)
" g7 @( X% K( O  V' R6 l' d[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
! r$ \9 Q6 j  E! K6 @$ z" \let i 3
4 d  x3 ?' n, d7 nlet sum-time 0
- G/ k0 W6 I: D$ r2 i5 ]  I& twhile[i < trade-record-one-len]0 N" H% Y$ L1 t) j. O% W' b1 Q
[8 @- [5 @5 T  g0 T  R. \
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 S9 {2 @! \% t: ?set i8 N0 i$ p* k) I# v  j
( i + 1)

9 L9 }: Z  t. m3 D, W/ ^  _]
& F4 ?. C7 u8 T  s* G7 V1 Ilet credibility-i-j-l 0' m3 R# }: h2 U- o; b3 O
;;i
评价(jjl的评价)2 r0 a8 p4 u2 S# p5 k0 Y
let j 36 M- }) m: F2 F* ?0 b  `1 v6 x) p
let k 4! o2 @! t; V% X& C0 [7 h) }
while[j < trade-record-one-len]
+ r/ \0 f3 ]5 a# T9 b% w  v' Z6 I0 R[
* Q+ n" h* e6 Gwhile [((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0 m5 g; e* _5 x) K9 r* K& E: _
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)
5 l2 a% a0 t0 L0 b8 ], Lset j
6 b; Z! n8 Y0 C) s) D( j + 1)
% V' I% \$ \& c
]6 s% p  p- F7 T9 h
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 ))
' y: G* D, i- b7 o) V; T7 V& i4 u# ?  f* V! I/ P; h
  B2 X$ M4 w( z! H
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)): }& e& N" W/ n, J* c8 s9 n
;;
及时更新il的评价质量的评价
5 a. o6 u) N& S, p9 C# f5 S  dset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( c& O& Z1 H' j: ^
set l (l + 1)
) a- i6 H1 ^! v( D) y]
% G9 u4 v5 ^) \! ?, v) s- Kend
7 e7 j! q$ k  t; G: \2 X2 [
' o9 C2 p, u5 D% |/ R2 E# |, a) x6 pto update-credibility-list
5 {, y/ h& a# Tlet i 0
+ K0 E. k, U  P2 B$ l, I; awhile[i < people]
& G7 s9 I6 t9 p( b[) E5 V" j5 Z& [, F8 {
let j 0
. _+ u- W, r- w4 K! b4 T" xlet note 0; V- u6 B2 x1 p7 P% U, G' ^
let k 0* O& v5 E( [  h! A) r
;;
计作出过评价的邻居节点的数目
! v& m: J. b! k6 dwhile[j < people]
7 Q1 D) Y# P4 k[3 b/ J) C! u" h' U! D# [
if (item j( [credibility] of turtle (i + 1)) != -1)9 {" {) `% H; {7 ?3 X( f
;;
判断是否给本turtle的评价质量做出过评价的节点# m+ u& `% p9 W: z4 N" G. N) T
[set note (note + item j ([credibility]of turtle (i + 1)))
5 d% {9 L! m5 _6 x0 G9 o; Q;;*(exp (-(people - 2)))/(people - 2))]

; B5 A4 a" E6 u! q# v4 Gset k (k + 1)
# \3 c: O4 ]' {# W% {]* E9 M! G7 c) e* B9 I2 s
set j (j + 1)
, G' _. |9 d6 G( a2 z% s]
2 y* _7 B3 m5 r- V1 h; ?set note (note *(exp (- (1 / k)))/ k)
4 O3 ?" v6 z* C$ Y! m: E. ?set credibility-list (replace-item i credibility-list note), d& E" L- J2 o, w+ F- f
set i (i + 1)
1 o/ q4 o2 t# o, W3 X) N: ~]7 S9 G/ k) c; k0 X$ p
end
. L9 |1 }3 r4 T& w. l0 j$ `' v  w6 F7 l8 I0 o
to update-global-reputation-list8 H0 }& ^8 I& |% @' t
let j 0
3 j; r: p8 R" ]while[j < people]
0 I9 ^# u! d* F9 w2 ^- [$ D[5 k5 h$ k- S8 u$ g! [* f  h
let new 0: V" d' ?2 @0 r2 I. c, H; f# X- b* s7 o
;;
暂存新的一个全局声誉
0 l1 C9 f8 T  Tlet i 0
. c6 d  d# ?# l' f* f; @let sum-money 08 K0 Z' A, p7 e6 @; Q0 m, ]
let credibility-money 00 |( X9 K7 s! ~$ B$ @- J5 s0 [
while [i < people]
, S1 e! k) q9 k' Z7 Q) L2 |% b( S[; o2 }$ T, p! N6 j( o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& I" \& K4 S* M6 w5 d. J! q7 [0 l
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ J5 J2 Y' `/ f  ?1 X' c! |& l
set i (i + 1)$ W8 b9 [0 \! i# a) g" ?0 S0 T
]; i! E& A1 `- E: V8 R$ i4 b
let k 0$ w( O& k# j3 {) P( |
let new1 0
% a* T( u0 L% m+ |2 X; b' `4 r% fwhile [k < people]1 Q# ]$ y/ j! A0 [
[
# T! c. d  X: {2 Y1 eset 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)2 N4 \& l" F$ S/ n: \9 }' g0 q
set k (k + 1)9 Q6 P9 C- W) k' y
]
, L1 Y1 T& U. \5 t, nset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) + L( P' z1 u8 ~( N; N
set global-reputation-list (replace-item j global-reputation-list new)
2 p4 t% Z2 n" x* tset j (j + 1)
$ A% _1 v5 |/ S7 Y0 m& ?0 l]  |8 J3 C4 w" n# F  j9 u
end/ W; g' j0 u0 c6 ^; X
% j6 {( R# W" o, R6 y

; ], w- w. g" r$ ^: T
  E) `. I% k5 a0 Gto get-color
5 @. e- Y6 |: v" |; G/ w1 [
- o1 J2 I7 p8 W4 l5 nset color blue

' C) j. ~2 [; lend- \' C+ M0 I( u, G
# p1 M& O$ p2 T
to poll-class( o0 `8 R2 a% _8 Y1 k
end4 E0 Q; n7 z5 V& h* m) }; F

  \; |& ]% b5 j. g0 P- i: q0 ito setup-plot1
; O) @! v9 I* j- _8 l! @1 n9 B* G8 M
set-current-plot "Trends-of-Local-reputation"
4 S8 T* s( ~' q
6 f% ?8 Y* y: ?+ {
set-plot-x-range 0 xmax

' A! Q7 R# o9 J2 U7 V, O8 p( }
1 K: r8 r+ k) t# vset-plot-y-range 0.0 ymax
0 a1 B9 s, G0 Q
end. Z2 r$ J( \/ N7 Z2 l2 z

+ f, G. R4 i+ Z* lto setup-plot2
6 A8 z! m" Z) y/ t% y  z
7 P" A4 q9 {3 ?5 T" Yset-current-plot "Trends-of-global-reputation"
# \" U4 Q: t* g0 }3 R
' E* b# v8 G# e% {7 S2 g
set-plot-x-range 0 xmax
3 J+ [0 H1 `0 g, h& f
( w! \# M) M( I5 u3 f5 |
set-plot-y-range 0.0 ymax

0 p! q+ g# q9 S0 \% b' S. B) aend# K9 O, B- {( ]* U  ~: m
8 G2 P! p8 z* L' i$ A! R. F
to setup-plot35 r$ S- v8 U0 [( c! |9 j0 F

4 c6 B: V  v3 B% I8 Zset-current-plot "Trends-of-credibility"
+ F4 M2 |4 y" b' R+ a6 j

2 K4 D2 S# K4 {% _0 C# A! ^  n! S1 ^set-plot-x-range 0 xmax

# `! V" z5 ^. J  t$ b" ]% Z# [' o4 \+ n% F
set-plot-y-range 0.0 ymax

" V9 O4 k6 x' m. l! Bend
/ R4 K$ x9 R) {, f2 F$ N0 G8 _$ E
3 ]. O4 Z" E% y" Uto do-plots
4 Z! z6 B6 s0 Oset-current-plot "Trends-of-Local-reputation"
; h; a1 ?& `/ h5 x: `, l; G0 Wset-current-plot-pen "Honest service"
0 V$ {  x7 Y% j, Tend
) n+ e# o% I0 x& A
3 q. l& ?' o1 h) S2 p3 z: u[ 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.
. N' c# N1 ?9 X6 ?9 X0 |0 P+ F0 G, j0 B7 s' [5 c4 M
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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