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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:
# r8 o2 D+ l0 Z* h9 A+ Nto do-business 5 Y8 G9 o# A( e
rt random 360
) I( J7 v0 c) {* D fd 1
# J( F( Z$ I2 g1 W  Y ifelse(other turtles-here != nobody)[
- V5 \: |' k" Z, @7 i: h9 Q   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.
7 u6 |2 J" {% Q' l: C  d; i. H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 n$ x7 O( M/ C( v. h7 S5 a" H, j   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer* E$ k( d4 c& n6 K9 k
   set [trade-record-one-len] of self length [trade-record-one] of self
# i* Y3 `9 s6 h6 Z7 q   set trade-record-current( list (timer) (random money-upper-limit))
7 f' @" j2 t, M8 ?
' V& t+ }. v# R问题的提示如下:, x' u/ U) A1 O5 O. N" Q

9 k2 d, }5 f- U( F6 ~+ q- ]3 l9 }error while turtle 50 running OF in procedure DO-BUSINESS) K' o& ^3 r$ a: f
  called by procedure GO" `) D4 r+ {4 m  d- _: v# R3 Z$ `
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 B/ x- b" g0 _2 o
(halted running of go)
4 i: Q) c/ ~5 r" M0 C5 E
& F7 p+ m4 \# h$ ^7 V' P+ x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) N  o+ I0 ?, E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
, q7 A2 t7 a/ nglobals[0 Z+ p6 j: i7 z5 u
xmax; S$ C  p7 T. g* ]0 V
ymax4 q% @6 s' g9 p
global-reputation-list9 g& |; E- r3 C' L5 q
' O2 I' ^! p9 g: s4 p' H6 _
;;
每一个turtle的全局声誉都存在此LIST
3 l4 ]5 M! ~; |6 O+ r! q; w, Wcredibility-list3 `/ u$ A* L# H8 ^9 d. P8 p
;;
每一个turtle的评价可信度
+ g  z& X3 d8 v% F, @8 ^6 b* {honest-service
9 Z0 q, m0 ]6 J: C( K7 w: O; Sunhonest-service; E9 `! ^! [2 @. r) F; X' O
oscillation
. O/ c2 r7 ^& D$ o6 x/ v0 ^2 jrand-dynamic
0 P. j/ Z" g8 I! x]
9 E0 D0 u, |1 D8 X  }
4 N* M% A  O$ e$ Yturtles-own[8 C/ q0 {' z; {
trade-record-all$ X* b  c" ~4 P' F5 R* {
;;a list of lists,
trade-record-one组成" X/ X0 F0 ~8 l! z1 K% M
trade-record-one/ u3 l8 K* I" h0 f6 R5 K) c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 {7 d" g: b. B* ~. _+ ^
% r; j; k! ?( f/ O3 n9 D;;[
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]]
1 W; m, u% V* ^: Qtrade-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]: c, j5 ~# q3 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
6 L) S. t* q/ xneighbor-total
, {6 J- B3 \0 K: l2 j# C;;
记录该turtle的邻居节点的数目
, ^/ ^  @! I; i( H* Ltrade-time
# X& }- g: v' U* m- `;;
当前发生交易的turtle的交易时间$ k) H& X; k8 l3 o0 W
appraise-give
4 {* w, ]# W: _3 L2 c2 O;;
当前发生交易时给出的评价
" d& \: ?4 A# ^2 Sappraise-receive. H8 A: u" w' E4 c" \# U/ a% R
;;
当前发生交易时收到的评价
5 W- Y# v6 L# E/ K1 n, P1 uappraise-time! e  e5 B( K9 s) V) l' ^& N
;;
当前发生交易时的评价时间! }# ~: u# G+ e# O3 H' ^  O! w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
" E4 h0 ^' ~% J' T! g) z+ Itrade-times-total, X- J% ~( ^$ Z; n7 Q; r1 s0 u
;;
与当前turtle的交易总次数
, z1 p5 D' W' K, n* |* Ntrade-money-total1 J9 G% S' ^. |' r1 T- I6 ?( D
;;
与当前turtle的交易总金额
4 [/ g4 l6 d- alocal-reputation
& Q; L. k- k- U8 yglobal-reputation0 W8 H5 f; Y5 ^) ?' ]9 [
credibility
" k! I  W- [$ D; t6 p  T# C;;
评价可信度,每次交易后都需要更新* G/ O, j8 o; B/ }6 C- [
credibility-all/ G8 `5 T8 k! J$ q# ^! y1 v
;;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
! {& m4 P0 U+ Q4 ~3 M1 j" \' f' W( z  e5 X2 `
;;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) I1 v' ^; `' b5 S0 v
credibility-one: l2 g$ i: ^4 Q4 N0 r5 W: M# p
;;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* I8 [6 Z3 o* P
global-proportion% Q: o$ V8 n; j% i( b3 s8 B
customer: J# r0 I' _! x+ V7 ^6 `4 M$ o# C3 q
customer-no
" `1 L9 C! h/ z' Z0 [* ^0 _- itrust-ok
! j. V5 W. e6 I/ J3 v. Rtrade-record-one-len;;trade-record-one的长度
* h0 R6 X+ @3 C. l3 O5 g7 C]
8 n/ S7 D) H9 A1 G$ p, ~
' {" H% Z6 u8 O- }5 N;;setup procedure9 j# B5 y& f0 l6 ]# p
6 J2 B! c2 h: F* i4 _4 r: x  [4 e
to setup" X& Q  |# i/ [& N2 L: U
9 T. i' G0 L) n/ p2 ^
ca

6 Q) O) C( T' I' N  k/ h' X9 m  x: `- x" @  p
initialize-settings
5 [6 @% |/ F, G

3 d. I' T* M( ]: B$ d* Ccrt people [setup-turtles]

2 u2 ]% F. V( O1 R# p; T( g
8 ?: @1 X% Z' q) v& e0 zreset-timer

7 V. P( w7 q% {9 E9 J' j: |/ q2 u& R  c7 c  j. X
poll-class

0 w" m+ r: [4 J, K# i0 I5 J. h, a5 b7 K4 E* R/ I" z5 j5 @
setup-plots
# E$ P1 E4 l3 g2 ^! u" e

% A/ N( |3 s0 E, ldo-plots
% k3 M7 b$ `' A2 k# K3 ?( u
end
5 Y9 x# v% _3 g) D* P, o9 h; Z! |/ O
to initialize-settings
5 D3 C' a) ^4 |! h: r/ l% T/ [4 z- J! D
set global-reputation-list []

! B! q1 e2 D. T- }6 x7 Z7 H+ Z& v5 C4 ]6 a
set credibility-list n-values people [0.5]
; Z. P( M6 U$ ^! O2 D+ z) i, H
# Z* r, H8 ~* p0 @
set honest-service 0

" e& A% R; ]7 F0 c# b1 h3 c" f+ r( Y: r0 E) L+ ?6 j( r9 _
set unhonest-service 0
' ]% g" ]% v, O: {) b+ I4 ]0 x
5 [7 ~3 D1 x0 d& J/ ?# K; k
set oscillation 0

5 c5 E3 g! f8 J. J# `# c3 t6 B& H0 |
set rand-dynamic 0

0 O8 ?- E7 l+ e9 X* X3 uend
3 a% X) H$ S! z( H2 Z3 B% W+ A" j9 w
to setup-turtles
  b" Q5 m; w( r$ @2 r7 f8 ?) Oset shape "person"8 c  Y* r* I! G; \' ^% V! |% |0 g3 a
setxy random-xcor random-ycor
0 B) Z' n* M1 r9 h. X" X  B9 Iset trade-record-one []* f" ?, w  d6 e9 n
' b% `/ p7 I4 U7 b8 b
set trade-record-all n-values people [(list (? + 1) 0 0)] $ F2 b& m; w9 Y' q& S. s
  K  A, M; |# f+ b
set trade-record-current [], {- i. t7 Q4 L( Z- j/ r1 V' C
set credibility-receive []. r! }, _, W# K$ [' ^) P9 m
set local-reputation 0.5
8 U$ d8 e/ r; `1 q1 N  ~set neighbor-total 03 M: Q& C0 ?, B; n, B
set trade-times-total 0( ?" t; l; c; q1 g
set trade-money-total 0; D0 k4 ^8 C1 ~, i* [$ o4 g2 n6 I
set customer nobody* V* V9 B8 B# X/ j; L7 M7 n
set credibility-all n-values people [creat-credibility]1 G) L* f# h, j6 d/ a  [: H
set credibility n-values people [-1]
0 E! T* a- g- |& s* L3 I0 P- ?get-color& l$ L. p. y5 q. ~4 y* u

% r  @* n2 Q& i' Jend9 {2 [: @% H0 m0 [
$ p+ I) G1 M$ ~. x
to-report creat-credibility' o' u# j5 Y* c2 i
report n-values people [0.5]8 t. `# w) R& |. W1 D: ]# `4 E
end8 O0 E$ k9 X( H, k0 m: F

3 d4 j1 N, L2 B1 Q! cto setup-plots
8 E+ ~, w1 u$ K9 w+ M& B' k" `7 ?: g0 S3 J
set xmax 30
! {* ^' r3 q+ t

; |! c. ~* Y; E8 B$ ]1 j, pset ymax 1.0

6 a! [  K! i# Q6 W/ X7 e$ `) S& w  P3 r0 n: [' C0 M
clear-all-plots
7 m1 f! a7 X" v% y

# J" e% D) Q, n0 n/ ]/ p9 Ksetup-plot1

( ?: ]  ?) V% e0 c
" m' n' s4 m( w% z2 O% o: f. }setup-plot2
- Q/ ?$ K% L& t- k* w: e; s

" \. m$ L. r7 U  t9 ysetup-plot3
$ n5 _9 e8 D* V8 t; s- \
end* g. _- |# @2 M: i, _9 m* e

" V3 [  Q) m& U;;run time procedures0 q- \! S: f6 w, x4 X

% r; J5 D7 @5 x1 U6 Tto go. e+ o, r* `) T! ^1 u" }5 W
9 z5 f4 N+ @' g) G; h
ask turtles [do-business]
7 ]# i$ W; V8 i0 D( e3 t9 X  T
end5 s  Q) F, n1 S/ f) r( i) N% C8 K
$ F6 ?$ n+ t+ b$ Q  S
to do-business
) r8 r2 v( h- E  S& F- R
% g3 |0 p7 b9 h% g! h7 q. r" Z, Z* ]
" e. b7 H( {$ B0 A* g. ]0 j/ P: X
rt random 360

8 i$ `( P  k1 W+ c! p/ u$ w
( B9 P8 E- j% s3 e3 Y6 Cfd 1
4 b7 a2 b8 r# P" e3 h/ j

. L/ ~+ ^% }2 V' }2 V7 c# gifelse(other turtles-here != nobody)[
) E5 w" K& \  x

7 _' c! I4 f, N* m$ G; K( Nset customer one-of other turtles-here

% W9 M% J; w/ f. t) Y- d  n$ L) l: |' i5 D
;; set [customer] of customer myself
) M$ t- }2 x# ^6 T
5 r) i8 }6 c* k
set [trade-record-one] of self item (([who] of customer) - 1)
, s3 S# T0 p5 w# r0 V0 v! \- m% b" a[trade-record-all]of self3 t( j, N8 b% z' a  |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  ]. T# x# I  }& C

2 M$ a! r, V+ z: E6 Eset [trade-record-one] of customer item (([who] of self) - 1)
: l* x- Q$ F# v[trade-record-all]of customer
$ q- Y3 H! z1 ]4 k- K. R1 l
1 F! K. L$ }4 K
set [trade-record-one-len] of self length [trade-record-one] of self

  P! B( ^: p9 Z  B8 B+ |9 y0 J0 h4 l! ?! o+ }0 Z
set trade-record-current( list (timer) (random money-upper-limit))

) P0 m( _+ n3 y, i, X! p# u  C+ i# ]$ T7 o3 z
ask self [do-trust]
4 m8 K# B( }/ K) y; Y;;
先求ij的信任度
6 I  ^+ w0 a2 x% U% S4 H
+ {. e1 l3 Z4 kif ([trust-ok] of self)
/ j+ f: r: ^9 V5 B4 o& [- a;;
根据ij的信任度来决定是否与j进行交易[
2 _% @9 X$ t- b0 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ h. E6 f2 d6 j3 ~  l* g- A( `% t" I' u1 e! j
[

9 ?) d: S- K# P( r* Y- |7 c) n( s6 ?7 ^$ M5 I- s
do-trade
7 A% C0 ~5 H0 O5 Z8 l

# Z* `4 m. v) b' n1 Eupdate-credibility-ijl
) p$ \8 _5 C% f! v

. x8 Y5 m! P5 Y  f! s' s5 Z' h3 Jupdate-credibility-list
1 n0 V1 d. J& C( P' b/ w
1 P* q3 m6 |$ ^2 ~. S/ g8 T+ C

$ h8 W1 g, G5 e) s0 Hupdate-global-reputation-list

1 T( v* ~4 E+ {% K) @$ e. H9 w3 b- ^/ O! }( h6 D" I
poll-class
: R" w9 Z' y, {- h* A; i( j4 J# t
' E% m& V+ i1 ~! Z* K
get-color
, Q% D$ k& X5 h5 z" E
2 |  j) o6 n+ `" ^
]]/ v* T4 P" Z3 ^4 }

4 y/ I' _/ y0 Y# o9 t0 Z; Q' r;;
如果所得的信任度满足条件,则进行交易
9 ?) T/ b) \$ S4 w5 t3 @& \) D
" y  e! o' f5 k9 P( g& W# r: \$ A& @[

8 _0 n" b, h" P) Y
! r8 Q5 L, E# |* H1 n# Srt random 360

1 Q" b* N5 a9 }+ Z
, q) f( T( o4 E& q" q. vfd 1

+ m' @5 E% o' n) w9 x+ N- y4 T- ^: s
]

# t" @3 m0 K/ b2 S2 q4 V
8 ]5 g+ p* u+ ]end

+ q5 H' g1 ?. b) \
% {% ?' @1 {+ zto do-trust
5 @! p. _+ q  b* M: Zset trust-ok False: W6 B6 F8 ]5 k+ W

. Y3 [! B' U( v6 C( i' @8 u; d

+ a. K' q! R$ hlet max-trade-times 09 S! M, o4 m1 T) J; \  k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]) e" L6 `; m* G  f# u
let max-trade-money 0
9 o) Z2 A# s$ y% P7 D1 Gforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 g. W5 `% Y' B9 C) v# P  ]. clet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))5 W- G7 j4 u/ R4 w
5 ~; T! T/ g5 d" ~5 S9 X+ Q3 l$ S
& P3 g' }4 |6 @' a7 Q
get-global-proportion" ^- {+ L2 H) ?, s! V0 i
let trust-value
8 \8 }/ S1 f% g3 G# blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

7 l; e) f3 w4 D* s$ A* ^1 ^if(trust-value > trade-trust-value)
8 H% w+ x9 w7 W  j+ p6 i[set trust-ok true]( m6 A* N3 U: n
end
$ @) l) M2 u5 e) H6 p5 q3 |8 v$ O( L3 i+ |0 [
to get-global-proportion
/ i) P; r4 D7 U8 c+ X& _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( x$ ?5 p: }8 B' `! ~8 W[set global-proportion 0]
3 b* X+ a. a7 z, e[let i 05 F6 ?5 F' R: B! i2 q
let sum-money 0
9 @/ E) ^2 e& }. ?* Z( s; e; Jwhile[ i < people]
/ W9 z5 S; N% w3 E[
& Z1 R+ X) K3 n2 U7 p. }if( length (item i7 ^- z; t8 w2 W) A4 ?- P3 p& u7 |
[trade-record-all] of customer) > 3 )

) b, E" ]. ^6 }; {[
0 W: G& h' `/ M! |) p8 tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 v: n3 `3 C' W1 r! S6 q]
+ Q5 D6 c+ z1 l' m; j]6 S' _2 r. X1 O7 r+ s
let j 0
; t5 ]1 D3 i+ [; D+ hlet note 0
8 ^! F) c' m& t9 c0 Z: C- _while[ j < people]" P3 @' l" n+ Z* T7 {' U9 A6 h
[
  o. u, D, Z: i* c3 q/ C3 M7 c9 j) hif( length (item i: }0 K' i) J6 a, r9 {( h6 u
[trade-record-all] of customer) > 3 )

9 d9 S$ J/ x' B& C+ Q[  z! q- Y" c2 A) ?# z9 P$ E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
$ [: a5 K4 [# d3 o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) o7 ^9 r, K' c
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]4 v- P, _' `6 q) E- F0 O
]
8 E1 y* k0 r2 I' K& V- y. o1 i]
7 X$ v6 B, A/ u& d: o4 I7 Lset global-proportion note
: _: N! y! r  T! H+ `]  {4 |% I( o0 Z1 ^9 u! @
end
. ?4 P, n0 ?( [/ w9 S
* h5 n( ^1 _3 E2 }& Nto do-trade
- D& T- s2 d( M1 g/ X;;
这个过程实际上是给双方作出评价的过程
: I1 k! [/ Q7 o( r+ K6 N! Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; t& A' ]+ v7 Y. Yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& o( N; F8 e. R! Z
set trade-record-current lput(timer) trade-record-current
: B5 n5 Q  ~% v% |/ I' E;;
评价时间
1 }# G2 Q' B0 X7 G0 Task myself [
) W$ b& _5 T5 l5 Hupdate-local-reputation
7 [. Z8 p8 i3 j& R) P; Wset trade-record-current lput([local-reputation] of myself) trade-record-current
% j5 k8 D/ n4 L9 e  E: Y* _]
) p( r5 g2 H; I/ @2 Q0 k4 mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) c; C) S" A7 |* Y! h% Y8 K;;
将此次交易的记录加入到trade-record-one
) [0 w; D( g' m) A) U( mset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 Y; T; E0 k0 [$ D; U
let note (item 2 trade-record-current )  Q/ ?; L' c8 X7 g
set trade-record-current
; ^  U  ^+ i8 X1 g(replace-item 2 trade-record-current (item 3 trade-record-current))

# j2 V( `" ^& Jset trade-record-current* y9 {6 ^6 a/ G' G. i8 ^/ P  B
(replace-item 3 trade-record-current note)( ]$ N* g2 S7 r/ \9 ~  t7 T$ Y9 H& F
! A7 ~' R0 b4 ]3 f4 S
3 \& Q5 Q* P$ M0 E: m6 f
ask customer [
$ W  \7 ?; M6 r8 }+ m4 ], h) J' h$ x1 Rupdate-local-reputation
3 n7 q+ z0 x+ \; c9 B  |) uset trade-record-current
1 e  O, W  B9 R0 q1 H4 z- ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

: N6 c7 {$ ^4 j8 }]
( U: @2 @0 C9 I4 F7 v/ F6 s8 @0 n% l0 g* m: {; Q

) o+ Q3 Z# R7 a) Y9 Pset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* q5 G2 J% ?- d: d4 u0 h  [
! Z1 T% a2 c; f3 J, C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)): T, s# d& d3 O/ U' e7 V/ U0 v5 d6 n
;;
将此次交易的记录加入到customertrade-record-all% ^: L* G/ s- }& j
end7 q$ F$ x5 d6 ^- z% r3 w2 `
# e- o! @: o0 L3 h7 p
to update-local-reputation$ N0 k; B3 M. i& Q* l+ g7 _# t
set [trade-record-one-len] of myself length [trade-record-one] of myself
) O; O4 T# z+ p! r1 t$ r! F1 c* _" \

4 i* P! S: U; r4 G;;if [trade-record-one-len] of myself > 3

. k7 P! b# N/ A* wupdate-neighbor-total1 ?) C2 `3 x5 M$ t* W
;;
更新邻居节点的数目,在此进行
; Y0 C$ j$ k: u- S' Q4 V( Ylet i 3& s; j0 I: O' F
let sum-time 0
  T: T  p; o3 z2 f/ `  P% owhile[i < [trade-record-one-len] of myself]2 m9 z/ |) {' `7 W, X" K$ r
[* e5 W3 N! a# |  T! \$ ~* E. O" _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 {; u  c' m  P+ \. |# u+ {
set i
- q4 @; N" f5 v( i + 1)
& F( K0 O* T* |1 G! C3 `6 u
]0 y4 Q; t! Z% i0 Z0 I
let j 3
! G- R) l7 N  w# s6 ylet sum-money 02 v2 R6 B6 l( m/ y& B( p
while[j < [trade-record-one-len] of myself]  a2 D3 O4 p9 D% U
[
7 h1 I7 s% B1 Rset 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 p2 o) w+ `. [  U* |9 x
set j
4 |, ]5 P/ N& ^( j + 1)

# W$ S/ ?4 k0 \( F+ }8 V; m7 G4 H]
' @3 H# p% P6 b7 c/ B% [* Wlet k 3
; j. J/ q0 \2 B+ U& R, llet power 0! ?! t% \1 V. h3 p+ l8 b
let local 0+ G3 O1 w" N6 a- [) ?" ~1 A
while [k <[trade-record-one-len] of myself]7 p7 S0 E& q* l& s1 D
[9 J/ _6 k6 l, f8 S( F+ c
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)
8 S0 l& H" i/ r( q8 r4 G# bset k (k + 1)
  I& \: R6 ~0 G2 j) L], `# m! L+ V# O& R6 F8 e
set [local-reputation] of myself (local)
$ M6 N- L- E/ n8 P9 ]2 Mend- M. [2 U' ?* y; |" J6 E
& f) L/ W& J/ |6 M2 K6 W5 Q
to update-neighbor-total
2 U' F& g! K/ I1 |9 X
  W! N  Z/ |8 O/ I. N/ Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]( N1 Z7 W" ~4 r/ T
& y+ g5 G+ e) g4 ]5 i, U

* W3 E2 u$ q2 g9 D/ ~end, a# I. u+ W0 D$ H8 q; z# a+ Z& q

% N: J* B$ V! u( N: y  q1 U1 sto update-credibility-ijl 7 [- D9 h+ L3 ?8 `' k

4 p" E# [) Z% [6 X( |8 l;;
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。4 A; N& n& l8 O4 H* D: M& C( y. X' }/ L
let l 0
) Q" ]0 f* }' ]& ?* R7 K) mwhile[ l < people ]
5 U  [* E, [5 i0 Q2 k;;
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
8 Z% b' s$ l9 }. N+ f5 E[
- Q" Q3 H4 a) c# j4 E/ z8 }1 Q4 C7 Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 D; z$ h7 }, tif (trade-record-one-j-l-len > 3)
! {6 t6 Q* l7 L# a6 k) Q[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
. P1 f; O1 a4 q8 {7 dlet i 39 b1 o* E5 c8 V4 d+ p% ]% Q
let sum-time 02 ~9 t. H# O* m% T7 q
while[i < trade-record-one-len]3 g+ O. \- y. a
[
" ]( U  z7 |9 K, Jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% I+ R) c( T: t0 nset i) N; Y" ^& ?+ i
( i + 1)

, h6 d, t% W1 r! f1 g/ U) ?]
! F' \+ q" S# e- ?% ^2 N, t% llet credibility-i-j-l 0$ l/ j( @9 Q1 z  w" Q
;;i
评价(jjl的评价)
  n. ^- h& }% Y& J, r6 t1 Qlet j 3" T2 X0 y/ y* Z( h7 ?
let k 4, Z5 m- v$ A- v, G* m. y
while[j < trade-record-one-len]
7 i' [/ T4 T- t0 `[" i! q2 n* t8 f# @) C" w* k+ O
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
5 t8 w/ M: M; J& G% m/ 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)5 A  b3 Y9 S1 \# H6 k
set j
5 E" @3 c- {+ Q4 c, R& ?$ s3 @! p: s( j + 1)

" S1 z% i/ I2 K, H]
8 u7 d+ y0 z- {7 A7 k$ i) lset [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 )): s! j* U: r9 Q* T& K

$ i9 W1 Y# Z  k$ \

0 L" r* d# P2 l* `7 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
7 H3 y9 W3 t* g" o;;
及时更新il的评价质量的评价
5 M/ C' B+ O+ B7 A9 Aset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# h) k2 F9 f! y* F: Pset l (l + 1)
/ Z# i# Y: W' _; g9 u]
) p$ ]6 C7 q7 C4 x  G  ?end  Z) k9 `1 ~2 E4 x: S8 g
" Q- ?* A- `: C  W8 V+ R8 Y
to update-credibility-list2 p7 A' ~: W6 j; q
let i 0
. C% f' b$ s6 J& R& Mwhile[i < people]5 }. ~' Q+ m/ e: m$ ]7 r  y+ @
[2 z3 k. A3 S$ [) Z9 v9 p5 d; U- v
let j 0
% B# m/ W, S8 l! ~% Zlet note 03 J+ N1 E% V$ R7 M% q
let k 0
* T: @# q" c3 L5 Z;;
计作出过评价的邻居节点的数目
6 b; b$ J- F( e; z' Pwhile[j < people]+ N% [% b( I" [
[
1 A( x3 A* T, A. s2 p( |" Z$ zif (item j( [credibility] of turtle (i + 1)) != -1)  i7 b8 L1 b2 J- T
;;
判断是否给本turtle的评价质量做出过评价的节点
" v0 o/ ]: c' ]0 j( _# G[set note (note + item j ([credibility]of turtle (i + 1)))
; u( B* B$ A: o% v;;*(exp (-(people - 2)))/(people - 2))]
8 w, Y8 @, [5 h* q2 a% N+ ^
set k (k + 1)- e+ M  z2 i8 B5 B! d$ k% L
]8 T) k5 K4 k4 V
set j (j + 1)% _' N+ X9 O: X4 d2 P
]' `* m1 n0 S0 L# M
set note (note *(exp (- (1 / k)))/ k)  o8 n6 B8 q6 Y7 |" |! b
set credibility-list (replace-item i credibility-list note)
& H! V$ y9 }4 C; v' tset i (i + 1)
1 _/ v0 w/ X. l! }/ z]6 x1 v  {( S: C1 ~2 Z5 m! J
end- U$ n8 ^" R# g$ M" c7 o

$ `/ j4 F$ ^& L& [$ Kto update-global-reputation-list; [3 Q) J0 H0 @5 ~& u
let j 0$ w7 N) T! G- J/ M% P6 r6 V
while[j < people]! F, ^. N+ `. C; w, L
[) Z1 ?9 I" A+ [1 @
let new 0
0 Q8 P: I3 ~9 f+ W. I( p9 f' o;;
暂存新的一个全局声誉
/ k% \3 \. p0 p0 Xlet i 0/ g. a3 D/ ?# m& ]) H  ^' `
let sum-money 0
; s/ ~! t7 \, L) e8 c+ elet credibility-money 09 k+ z! v: c" m) f. \
while [i < people]
, o7 X5 E2 C/ c0 \, W% j[7 v# U2 z5 Z- ?8 R7 B, G, ]
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 s4 E  S& }0 C6 k9 kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' Y9 w! h& O9 s* Oset i (i + 1)  R1 j( a5 w: p
]3 p( ]/ q$ V1 @! y; v! b- R- p
let k 0, O. X6 @# ]8 n* i# K" ~& q
let new1 0& k; V) f0 _, G
while [k < people]
6 O1 X( z5 [6 L7 p  i[+ W3 k) n! o1 n" c, u  D$ W, g. }
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)
1 g6 ~8 e4 U4 a/ B1 a. ^set k (k + 1)
: ^% B( W2 O# h]: G* H+ J/ i8 K' G" c- W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
3 M/ }8 F& z6 u/ c$ }set global-reputation-list (replace-item j global-reputation-list new)
: v6 H5 X2 A2 l% K. p; pset j (j + 1)
6 t! ?. d" e9 b: S0 l- M]& O  y9 X4 S8 r# k! F1 _+ A
end
5 A( y: i  S  {9 D2 M
0 e. H; R& O! l9 h; l' \# q8 D1 Z. s! ]. ~3 G5 {& \

$ e# G$ V6 |+ j; [  T1 cto get-color+ Y/ Z" K5 O- ^1 j+ |
7 D% r$ p+ U, ]0 Q7 w9 c
set color blue

' k* r6 N# U0 e1 t0 J8 |end
- a3 `0 Z0 {' g6 Z# w. C7 z9 u
3 t( W6 V+ k! [; Jto poll-class1 \2 _8 P/ o7 o% e1 F' b
end) \$ E% S, T, ]) ~9 G* H4 g
4 p/ I4 _7 q0 S/ Z, L) F
to setup-plot1
& N8 p# v7 m/ {4 J6 R2 p2 G" x  ~( p; C& z
set-current-plot "Trends-of-Local-reputation"
9 @# m! G$ a0 r) a) t

5 S$ N; N( j; _set-plot-x-range 0 xmax

# a+ M. f/ I+ n5 @# @/ l- O* B! {2 {7 ~
set-plot-y-range 0.0 ymax
+ e% i+ @1 Y! e  [
end' ^0 `6 ]- j" }; p$ U$ E3 h4 G/ m
+ }. l# F! P& }" |0 E+ p
to setup-plot2
+ H6 I# k( V( b! @( K$ y( n( N& M6 U! E
set-current-plot "Trends-of-global-reputation"
+ J  g( X- K1 i' k( I
! R- o# @/ d3 }" u: E, G' k$ k
set-plot-x-range 0 xmax
$ ]* ~. E1 R3 O# q1 H

& P4 @$ ~  z2 ]6 D! l; e& Pset-plot-y-range 0.0 ymax

4 b) t; K/ H% U. ]- P0 Iend5 o1 O7 Q5 ~8 z$ ^/ ]
0 g$ P* o1 a7 f3 D# N- `  Z% l8 S
to setup-plot3% v# ]8 ]0 b" b( F- m9 V
7 {3 E7 e! O7 h* B/ c! |
set-current-plot "Trends-of-credibility"
5 ~8 e' d6 p4 w* n( \1 I# ^5 f  ~
7 s( S8 r! v% g9 _
set-plot-x-range 0 xmax
6 w% a$ j4 x% v- P7 b$ {
1 N; i2 z. [3 F$ S7 c7 F5 t
set-plot-y-range 0.0 ymax
9 y4 E" R  L% T% q& ^, i5 ~' O
end
7 _6 |* z$ ?+ r: U$ l; e9 W5 X" S$ f! `6 l- j
to do-plots
+ Y& Y' z8 ^: x6 r) z1 z$ ]/ z5 _set-current-plot "Trends-of-Local-reputation". ~1 v& y7 I% X! i  y
set-current-plot-pen "Honest service"5 O" I; h. {  p% }$ x
end8 x5 ~, N& ~5 U2 A' M$ k+ ]

5 a8 f) u2 h# J+ S+ F/ B4 @[ 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.
& ~8 X3 p# I. _2 [: s7 z* Z6 u% s. B% _
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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