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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:/ b1 T+ u' h/ D) |6 |7 N
to do-business
; n( P" D" E6 Y( D% c rt random 360, ~( l4 f5 Z# U+ X% M* r
fd 1
& z& G& v- E/ K3 S* \4 c ifelse(other turtles-here != nobody)[. G- Q' p& }# I
   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.
6 S# s+ v: f# l2 X0 d/ z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ Z0 V. h+ ^* b7 m6 u   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, J' v' \; A! s7 q3 F: {- i* o! E) @   set [trade-record-one-len] of self length [trade-record-one] of self
  c- E# f2 |+ j% L0 v( r   set trade-record-current( list (timer) (random money-upper-limit))8 s3 {8 K. y( `+ Y( n

1 f* D; k  R( L& y% ~' d" `问题的提示如下:* E& R. p3 A! Q0 ?. D) L& {# ]3 l
0 _3 g; N, V# T/ X( ?5 x
error while turtle 50 running OF in procedure DO-BUSINESS
0 s) i& R6 F! i9 t$ @! i) y- z  called by procedure GO
* B) |# L4 ]; n1 l& \4 L: u0 l4 ROF expected input to be a turtle agentset or turtle but got NOBODY instead.5 u  x7 W: k' w9 e) }
(halted running of go)% o  [+ L, ]0 ~# }; `6 F
! K4 l, i7 L% i7 f$ x1 G
这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~# N2 v% B: L* I; W- ^1 k
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
5 \6 ?6 C0 q* q6 `5 d. kglobals[
, Y1 g# {- W5 q1 axmax
+ c4 w  ]- X8 Vymax
  m6 u  `2 Y. V+ ]' ^$ k2 N& p; s) Pglobal-reputation-list
0 ~! f! `, ?. P9 `! Z
' d6 h" g; r* ?+ O;;
每一个turtle的全局声誉都存在此LIST# H) x4 r# ~) n. N% ]$ X
credibility-list) {. m) W2 l$ \$ \& |
;;
每一个turtle的评价可信度
  U2 Z+ O" @" ghonest-service
( Q; n& g, ]; y9 wunhonest-service
; P) @/ Y8 n9 I, a! X. E8 M' W+ ^oscillation
. q6 E0 Q3 H4 Vrand-dynamic1 \/ J0 X% Q5 k9 L% o3 B1 U  k( q
]3 E+ \8 _  g6 q% Q$ R5 J

. a" s9 y  r' \+ I$ b2 |; c8 pturtles-own[
7 P) k# W; ~! L* s# a0 Itrade-record-all
: Q# a1 ?5 o/ Y! P- |: _: w4 h7 `;;a list of lists,
trade-record-one组成
6 ?8 G" ?" E3 ytrade-record-one# U, `) f9 q; X8 x! ^6 v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录% B) v" p' D2 I5 X5 S1 I

! P" }6 ~4 C! U- }3 Q;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]7 [9 I& b7 h5 Q6 R) e
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]) \* c. e* D! w" _/ r
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% E( }. W1 g- ~: J
neighbor-total
$ G% e9 T* }6 n7 {;;
记录该turtle的邻居节点的数目" i4 X2 f' f9 N: F
trade-time1 G0 _2 l+ k* [( ^; ]
;;
当前发生交易的turtle的交易时间
2 z8 D3 }! a2 `  e% g& uappraise-give  e2 j( S6 g  O8 B8 |$ q
;;
当前发生交易时给出的评价8 g' G% K/ Y  l9 N: N
appraise-receive1 m+ B, t; }2 C: V6 T* N
;;
当前发生交易时收到的评价$ K, y* B8 w/ Y! ~
appraise-time
  {; e3 Z7 p. p4 R  Q& A. ~) F( C;;
当前发生交易时的评价时间
* L- h8 z; M$ J! Z1 F/ l. C' L& b$ zlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 j8 N2 U) c- p& C- R! D
trade-times-total! B% v% {! h5 Y9 q+ s+ v
;;
与当前turtle的交易总次数
% n, s( K. W1 Y, s4 ktrade-money-total0 ~3 P' [* e! y+ M1 T
;;
与当前turtle的交易总金额
# u6 _0 N, B# _. Tlocal-reputation
8 b1 r2 Y& w6 D9 ]( a) Q8 R0 q# Nglobal-reputation5 U# y2 y& E  t0 N7 v
credibility: g$ I2 b7 v! K" K
;;
评价可信度,每次交易后都需要更新3 E" ?! D9 P8 k, M& Z/ g. w, M  Z
credibility-all
5 U6 X! l% k  P" w% E;;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
: @9 C  h2 L/ D2 c$ m
; B( D* v& F* Z: D;;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
3 l' a* |1 e/ Icredibility-one. j0 ^, n. P" b- r
;;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people8 n/ J0 P& ~" x, Q
global-proportion
& ?; [2 Q! W5 D7 Q& bcustomer
. w/ h# f0 X$ S# L9 hcustomer-no2 F2 z" T8 y2 y# Y
trust-ok
- t8 D: D& u9 {: B& C, U% S" \trade-record-one-len;;trade-record-one的长度/ A7 ~9 d9 d9 N
]' v/ c4 e/ \2 U

& u4 `. S, P" j; K; x;;setup procedure
+ }! Q( y: W+ Y7 }9 S; H- B7 S/ e/ O
/ U% i" o. F  [( k, fto setup4 e: i% j9 Y6 y! k4 E+ D3 R
( j! t. }; a- A. q5 I) q0 J( t3 T
ca

7 p! [4 P! s- }# u; Q: p7 X. F7 [2 [0 u2 K* @& `0 x
initialize-settings
6 Z* k4 k; }5 y8 t. Y# c# E+ Q/ v

  ]4 g* W+ g* ^crt people [setup-turtles]

, L' q7 Z( _: x; i2 B" f/ C1 G# _2 [  J0 c  i: X8 Q
reset-timer
; w3 \* ?1 ?  y. D0 X. c/ v% P1 y

; A( Z- o$ E* G: Vpoll-class

& p) v6 y# j8 f* Z
. ?0 c/ W1 Y5 U) k: `( `setup-plots
* y6 S- q& }4 M: [8 g

' C% u, B" F- D2 b; _, {( Mdo-plots

$ B& ]0 t7 u. |& l" m& p( vend& k) _5 h1 V, B1 Q1 c$ C. u- u* [

; x7 R' y( L9 \4 C. sto initialize-settings4 m7 b0 ?5 ]# t) c4 ]4 W
0 F+ j% o9 j- s
set global-reputation-list []

. Y  x" }6 a4 d8 S6 M
% l- z: S9 Q& Z# H9 [set credibility-list n-values people [0.5]
9 Z! e1 G; j  H) `8 p3 [% L

: y. _& h5 T- \6 c# eset honest-service 0
  x0 K/ }; N; Q/ D% y$ l' w
0 N/ m! [6 {1 i0 c7 I" S& Z
set unhonest-service 0
. r+ F$ k( M+ G4 ]7 F3 x: f3 C
+ S0 U+ f2 E( A% ]6 {/ Z1 y# [
set oscillation 0

3 c: y3 {# D, a
7 U' b$ H. ~/ {3 zset rand-dynamic 0
# t. g! y+ ^& ^4 x
end
  _- @' J  ^+ X+ q
; \( C$ r5 R( T9 u* t' R( w: c8 d1 @to setup-turtles $ Y2 ~; ~8 x' X) c
set shape "person"
, h( ?! r) A7 S4 }! L3 Nsetxy random-xcor random-ycor
- L; A6 |0 |! O& \9 Gset trade-record-one []1 b7 }4 ]) W6 q
+ I* j2 p8 T  r* B7 U9 x
set trade-record-all n-values people [(list (? + 1) 0 0)]
" n4 e7 |: K2 B

7 V/ u& h7 @3 f7 Hset trade-record-current []
- M& ]" _4 K3 z3 q0 F3 c5 {set credibility-receive []' m3 L) `, B& g& s
set local-reputation 0.5
7 [$ Z. ~% N: Jset neighbor-total 0
5 F; f8 G2 r* O6 lset trade-times-total 0+ D- j( M8 @& W0 E$ |3 d. x
set trade-money-total 0" ?' g9 m( p& ~6 ^' B( ~
set customer nobody
- W) E8 f/ v2 {. A- _# }/ mset credibility-all n-values people [creat-credibility]9 C* h+ V" |5 H6 c; F7 b0 I
set credibility n-values people [-1]
$ N! e0 J3 L, w3 b" }, iget-color" `. E* m7 L6 s' C+ b

4 G# u; Q! A9 H- oend
3 K( s0 \$ U8 D2 M! ~  r+ H5 B; m9 r( W. Q$ j, W
to-report creat-credibility* p% F* g; ^6 U- U
report n-values people [0.5]$ u! H! x6 i1 |  ~1 r7 {
end
, _$ E9 L# l1 J2 m6 q/ w+ w  S! r* S
to setup-plots
" t) G" l( N4 [/ y0 ?$ O+ @1 z5 c+ A" @4 a# S
set xmax 30
, p2 A% N! a; c  A
8 o/ m6 b$ z( [" y
set ymax 1.0
- U2 c/ [: f+ F+ I- H( |2 G2 J

9 j8 x4 t2 D- }8 Eclear-all-plots
5 V/ A' q- d' g5 a
1 w9 P( r. ^) ~( t
setup-plot1

& p. Q- p! C! n+ W
4 U& `+ \; h( v* R+ ysetup-plot2

! k" I- S. g: }1 ?% b$ @8 p+ F6 V% ]$ S# l# ^
setup-plot3

5 k/ G. K1 C5 T' a6 h: gend
2 I& m: j% Q  C3 h1 a) C' S: @6 B3 I% j) M8 \5 n, I" f0 D5 Z
;;run time procedures
. c. g2 c& W( z& G8 c! X4 J) @" g/ k# b7 B5 X
to go
) {' f' @7 q& t4 W; f$ c. ]
0 b) t) d6 F. [# t9 {: Pask turtles [do-business]
* W9 _1 h) i: E, ?3 f2 q# I
end& s; `+ ~7 r% d) L5 J

' `' Z, ^7 p: a3 b1 Z: w: Ito do-business
" f, R5 t( N( x0 ^9 h

2 Z. L" u1 T8 O6 k# L
! g% I. f' R* i+ D- w3 o) jrt random 360

8 i+ b4 m0 {1 g5 u
1 T; A6 K8 ?5 M& r0 K$ jfd 1

4 k( \0 X0 r; o+ n# Q1 `$ p8 i/ m' v0 E+ |8 M
ifelse(other turtles-here != nobody)[
. j$ k2 V+ B( v! {$ Q
, c" X0 z% K3 B' e4 P
set customer one-of other turtles-here
$ t) ]8 H! F* C+ Z+ z3 \" G& f+ c
' ?; t# |& m9 p, V9 v1 ]5 P& \3 ?
;; set [customer] of customer myself

& M9 T8 ?. z# E/ ]3 v& x2 C
" u# j6 ~8 ~& Aset [trade-record-one] of self item (([who] of customer) - 1)
, o! @+ \" ]: b* P+ s) E6 n, O[trade-record-all]of self* @3 C! X5 W- Z! N2 r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 E/ H+ `8 }" N8 q7 }2 S( k5 r* P: d( ]1 ~
set [trade-record-one] of customer item (([who] of self) - 1)
" B* m" q" _: ^# \2 f[trade-record-all]of customer
( s) ^) T* p0 Y0 n. e5 w
7 ]0 u. z8 E5 o
set [trade-record-one-len] of self length [trade-record-one] of self

2 g: {: ]7 R6 D: T$ K6 s$ u
$ W- Q  i; l& T- aset trade-record-current( list (timer) (random money-upper-limit))
- ?5 Q6 Y) @- O2 L$ _2 l9 P

7 h+ ~* v, W/ g; o9 q! yask self [do-trust]* L0 R3 t3 z9 L
;;
先求ij的信任度- E; P& r$ T% ~% h
+ V6 S) p7 _% ~( i, z" W; B/ f
if ([trust-ok] of self)- V' q2 L& \/ h' W# J$ J
;;
根据ij的信任度来决定是否与j进行交易[
1 _, X( R# v$ Z; v$ pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
/ b8 T- v3 r+ O5 v# U6 V
: Z! k1 P0 j6 N) V4 }[
) q5 C( A6 X+ y5 f1 j2 g' R+ T

! o: [* t5 x/ d4 L; s5 d: K3 w) Ado-trade
2 M* W6 g4 P) A) F

$ \' o. B8 v+ l+ gupdate-credibility-ijl

% {* a. Y6 h! V8 J3 u, w: S# y
* O1 M  g& v) ^( I) a3 `! uupdate-credibility-list# t3 a0 q/ y& u/ d

/ ^3 f6 h8 ^  G7 L( n/ ?/ I
  S: B1 t- t) i& s% n) M5 p, aupdate-global-reputation-list
: o5 d7 v5 N) h- o/ s
. O9 x( g" \# a! ]' ^. E3 S# d0 ?8 K1 z
poll-class
% f# P* g$ @: t* {" _9 w& M

7 u+ D& \( G" W2 t. S6 p$ _get-color
( I5 v% P  Q5 r' P! x* q$ v

0 X& Q. G5 ]7 Y3 c7 D]]. g6 H/ [6 u5 A. Z3 s' K) Y, D5 ]9 T

4 l/ V/ l- J% x5 V( {# q* `; [' H;;
如果所得的信任度满足条件,则进行交易3 K. R% q( |' Z  h8 d4 S' a
8 A4 B# _0 h  c- g0 u$ Z
[

2 x. J& ~5 Y) \8 l
! A; F5 S7 ?" Urt random 360

) G6 ]9 Q, f7 w
. u% J2 ]" Z) P& @fd 1

# {6 h3 H* x; M% E- s* g
; @; e9 J0 z; ]# I% C+ w]

% ^; U5 V1 ^& k/ A* Q' ^! c! c, I6 B& s) x" k3 k
end
& }- t( p7 j( N0 s9 e  S
+ W; |* m6 W9 }+ o8 J
to do-trust
" K+ v. h" w0 F7 c: K. mset trust-ok False, k9 ^, v8 b% M" A

1 e: F. C, p6 b! b( J7 X
$ R3 Y: w7 j0 {4 @$ i) E
let max-trade-times 07 H5 s; i) Z% V( k. Y9 E0 G, \, n# D
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
# ~1 v( O4 o6 b; D( rlet max-trade-money 08 U, \/ y. s9 K6 w7 K6 Q1 L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- ]) F, I) S4 M! O% @& plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) b3 X3 [% ^6 @# T. ]; n9 q

% s0 x: I$ E3 K8 ]* B
/ L- {+ s  L* S# {2 k# g5 U+ z
get-global-proportion
. q  w' k. v) ~* w" Ylet trust-value! y+ n+ x$ _0 u4 T; C
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)

  [# T* O) Q. L! \if(trust-value > trade-trust-value)
1 @: L1 h3 V  g7 E- Q7 r[set trust-ok true]+ z! W+ k' M& i" i$ j; D, ?7 u
end
; I, j; {6 F/ ^7 L0 S
+ N$ y2 H: {( I- v! }to get-global-proportion! {0 R$ W3 L4 i  X* p( C: E+ v" _
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 M/ A) n/ j/ @4 z
[set global-proportion 0]
1 Z: r* y* E; [+ w( }6 O' @, W[let i 0
  V- V4 y7 a  T9 D) m+ [0 I. K  Xlet sum-money 0
, \1 B& j0 p9 V5 F! C, z2 awhile[ i < people]
3 B. ]+ j& }) a" g9 t% V, r[
$ E) X0 {) k+ F/ `if( length (item i9 \& s1 S( H  Q& q
[trade-record-all] of customer) > 3 )
9 w8 [& ]4 `$ F" |  R' O+ K
[9 H3 Y: f( G$ x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
2 w" u( s6 N: f6 d% l1 f0 l]
& ~* a" h( _; p" _$ ^% r- E4 M: U( t]/ b5 V+ \0 f0 I7 v
let j 0
+ k' L0 Y) n+ S& i. Clet note 00 }/ [, B8 E  M5 U- a; i& ?4 H( p- N
while[ j < people]
' m+ N- O' T2 ^/ J[* _+ n7 z2 n& L$ t7 }$ h
if( length (item i, n* o2 B2 T% @- j! S. I, Q
[trade-record-all] of customer) > 3 )
6 v5 [! e8 d$ o+ x) v2 O
[0 W6 T$ O8 d8 t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)1 W8 N! w' V  U7 {9 M, o' H  K8 j
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 k; G# z) e: p$ x) J7 O/ p. @. l
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]6 N" J6 {) w( U% x4 y3 x8 t* V
]
9 N% f: e) e5 Y; {]& H! ?7 s5 m5 M3 _4 k. i0 U1 W6 F% E
set global-proportion note
2 g; |# V" s+ ^5 ^  H]
  Z$ Z; e' n% a1 @+ E9 o* A6 Eend
+ E, G0 o; O4 d: e9 d
: r3 I8 x6 I% u1 S  {$ D+ o, Yto do-trade
+ N* H; |& v3 u;;
这个过程实际上是给双方作出评价的过程
7 l! v! x; A" i9 tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. p7 _" M5 w- q& J2 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( u: T7 a) _0 k) N# l
set trade-record-current lput(timer) trade-record-current6 S8 I; {! F- u7 C
;;
评价时间1 z$ s& r$ }( L2 E' C1 a; Z
ask myself [$ X5 x% k8 R1 b% x; c
update-local-reputation/ d8 l2 ]! f5 B9 L2 s5 I
set trade-record-current lput([local-reputation] of myself) trade-record-current
. ?' n" S2 T5 @6 U]1 j( O$ s' E' _' A1 G: s$ z# o
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- _# Y8 Q4 S3 y2 H: V% w;;
将此次交易的记录加入到trade-record-one
8 a2 K! W; h) @set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ |/ ]6 B& g% }% h  z$ g! k
let note (item 2 trade-record-current )# S! D& S  g& y
set trade-record-current" ?. f& I& w1 x- Q
(replace-item 2 trade-record-current (item 3 trade-record-current))
6 ~, H% ~5 {) X! i5 y' N
set trade-record-current
, H8 `  C- Y' U(replace-item 3 trade-record-current note)
% v# f6 c- v; j6 o; s
8 G% h, D/ `3 @  j# }3 M

9 }  [- V$ p$ _/ l' }ask customer [
  h5 |! {  C) `" uupdate-local-reputation
, |1 h; [' A, A. R4 I& V1 Hset trade-record-current
; o! E  T8 X: y  b$ z4 \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. o: L6 k2 V" C1 V+ d
]
2 c" y7 X+ V. x- f4 \# \" T1 Z! N8 M2 S7 m2 `' m5 X$ e

- \- d( Z. F: H3 T# l2 O- Yset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 a5 }% [' \- l/ r* p! G* c1 w
3 w7 w0 K) a. @  t* [$ F
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 F9 H) R6 e7 B
;;
将此次交易的记录加入到customertrade-record-all7 J' o/ k: T( f' |8 l: H
end  G; h9 ~9 ~2 x: y6 ]
+ x$ Q/ M' a5 Y
to update-local-reputation' R+ T# p  J; b$ B- c
set [trade-record-one-len] of myself length [trade-record-one] of myself/ [: F, G# p9 [" P- A  w2 i% E- G' D
, Z( D) W. b/ E4 I2 w1 {
, ]3 ]( F* i7 t2 }- @2 ?
;;if [trade-record-one-len] of myself > 3
' {* u# k4 [0 c8 F# A4 R- Y
update-neighbor-total
) S& z) C" U# I( E;;
更新邻居节点的数目,在此进行/ W: v! X" B9 u( P* e
let i 3
! e  H# c& v8 }& E( @let sum-time 0
) R5 M& J5 }; ]" Z) gwhile[i < [trade-record-one-len] of myself]( q; |' M6 v8 W" ?/ U  M7 v
[
9 R* t9 L+ z5 I  P: B) F+ Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )7 q: q+ k" }% U' l5 j6 `
set i
4 G$ Z, a5 m5 j- L4 @; ?% z( i + 1)

' N- R" {6 E9 A]
1 n! C! u& f' G# m  q4 ?) qlet j 3) `, p& u# t6 d6 f  T
let sum-money 0
% w. {$ J9 b, Q! i3 Jwhile[j < [trade-record-one-len] of myself]0 a. C4 e8 @0 l4 Z
[  A. h$ N) u; t5 V; 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)
+ f1 C( T- z+ K/ uset j
8 W) K' ?2 r1 B7 |4 P0 o0 n* m( j + 1)
% L8 X8 Z. p1 C* q/ H8 j$ B# k
]) J# v; y" @  @0 S$ z0 E4 i, e
let k 31 e  @/ Z+ ^/ D2 Z
let power 00 B5 B; C; C; m) H/ C
let local 0; P5 s+ L) L, n  s
while [k <[trade-record-one-len] of myself]& [4 \  R0 W$ m0 e
[
2 c" |* `/ C7 g0 n4 Yset 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) % j. p0 t5 h: w- o
set k (k + 1)
( L" l0 y/ j3 \; f% p1 X]
, N/ c6 q  {! w4 L$ J- k! f) }set [local-reputation] of myself (local)) ]- x/ Z/ j2 J! Q
end
1 d. g# ]( `2 T) k: Q4 A/ f' ?* A+ V. \+ u* P% Q" j
to update-neighbor-total
1 q4 V2 A% m% L" I" J7 @
% z' g% Z* D$ k$ H1 }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' V" q5 o* L3 v1 A2 t# A2 i

1 X4 m; Y) l& q; L8 R  e
5 x5 `/ z, ]4 j; G
end
3 i2 y+ Y9 q" D
2 \4 R9 ~$ |3 {( mto update-credibility-ijl
' t( T5 h% ]9 X( V* ]/ s( j
* \# x  p7 C' D8 _  y( S;;
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。
1 ?) |& }+ W3 e" Clet l 0# g: H: s( w+ B/ t1 G
while[ l < people ]6 l7 ~% x) ~/ d2 O
;;
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 Q. e: m: `; r9 n$ S( h* K/ @
[4 T9 E% O, G2 E& `. z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
; S; R. \. P6 @+ ]- n8 b0 T! x" zif (trade-record-one-j-l-len > 3)
" B) U8 M1 R! A0 @) b[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
/ e7 ^. m+ k2 o  mlet i 3
* z/ p$ y/ u2 Q/ m6 klet sum-time 0
/ z# d5 F1 d$ H* g& Pwhile[i < trade-record-one-len]- }" u2 Y/ Z- n5 V" r
[
! e7 b; d* I' V" }7 r# c2 _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )( h  }' ~5 k6 p5 k
set i2 S: }0 f! I2 I* ]
( i + 1)

8 B3 z$ F- i$ E: t: Z]- k, |2 }; q0 S6 V+ _
let credibility-i-j-l 05 M* i& ]0 E- M5 l& p% [8 |7 P
;;i
评价(jjl的评价)
- o4 |! F3 @, X4 O9 b) y! nlet j 3- e) v+ a" Z, m! u0 f0 }
let k 4
+ j: l6 ]! F' w: B8 ]* J6 `- kwhile[j < trade-record-one-len]
0 M" ?* ~! c  B0 \1 c" P6 K/ l[
; m/ p' j, H0 F8 d! D0 `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
3 C& [# Z  O1 @9 G+ M$ X  A# Mset 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)  n0 q0 r5 C( b7 v
set j2 ^3 ~2 _0 Y; d$ t/ `; _2 [/ D
( j + 1)

" T" q) R' E$ d( o; m: Z]9 E: H- x4 \0 H( v% R; W
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 ))
3 R+ |" w, H+ Z8 i8 m2 r2 c7 d. k' I3 O! B  b% t0 y! R( L
8 U/ w. I- c0 j6 r8 R
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ v3 `9 @: F; s3 Z5 D: g; D
;;
及时更新il的评价质量的评价% O3 `# n8 O! ?, H
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ }8 K. o9 X$ G0 P
set l (l + 1)
3 Z6 |( {9 Z, o: Z7 D/ E& V9 {]/ K( N3 }1 I0 h# g$ R. |" R
end" V5 `; Y7 y+ d, J& o# h& S3 @
' E) o4 s1 {! |( w
to update-credibility-list9 @" R" y- G& {+ R
let i 0
# _, n9 q6 H% R8 vwhile[i < people]
# p9 E! s* ?1 ?4 h! X( x[& X- J1 m$ C3 f4 c9 \% S5 h( [7 q
let j 0% f9 L: S) H: R3 j( c! ~8 ^
let note 0
  O. B: }! w4 H. Q  V1 J0 G: blet k 08 i% {# E* i" t/ Z6 f; z+ c" ^
;;
计作出过评价的邻居节点的数目
* _$ w- K8 t: J; B+ \$ t! n) A# o3 B( ]* Wwhile[j < people]
, R8 n* t0 U$ g3 m  C5 _[
$ Q" Z2 e1 `& i4 A1 b8 rif (item j( [credibility] of turtle (i + 1)) != -1)
% q, e/ X  U. I6 n6 `) ~;;
判断是否给本turtle的评价质量做出过评价的节点
5 V$ O) W1 _5 X, u# U( H5 q$ y[set note (note + item j ([credibility]of turtle (i + 1))). y( i: r' z* ^2 Z
;;*(exp (-(people - 2)))/(people - 2))]

& A- z0 ?, ?5 v: z9 ]0 cset k (k + 1)' p. z5 o4 x; ?6 X7 {3 Q: A! E
]
$ B, A% @: Z' y8 J5 i9 |1 P9 q/ Vset j (j + 1)! |0 ~; w/ C7 z% V2 O& r* z
]
  h2 j5 T- [& i' l" u  R7 Hset note (note *(exp (- (1 / k)))/ k)
- Q1 ]% R4 X; ^/ Vset credibility-list (replace-item i credibility-list note)
# }/ |' r0 q, Cset i (i + 1)% n/ m/ T! @3 S' f( g
]
, J8 K% J- x  |& Pend
) j3 D) m* ~' k6 ]9 q% ]3 M, W6 |, |% z7 z
to update-global-reputation-list
- s. o  I' h; J  n# {let j 0
5 q1 i2 i! Q+ q6 y: Jwhile[j < people]
- o- i/ _- r3 I3 J5 j[2 e; N4 m6 N7 B' D) b0 ^. G1 }
let new 0
# C1 }" |# W. D1 S) Y$ t;;
暂存新的一个全局声誉
5 Q5 }2 m% Y' x" S1 ilet i 0
* X+ J# r: X- X6 ylet sum-money 0
6 e' {0 O: x6 Q+ U! W3 tlet credibility-money 0+ s, e; A! e1 @# u; j
while [i < people]
9 B+ w' `6 F1 z* m% R[
8 t! H- p4 o- _& ~) ]1 a$ N$ ?set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))/ D6 H& Y- o$ Y( L- @% F
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; a# [2 ~2 _1 a& O4 L( Bset i (i + 1)* b. k5 u( G$ |$ J* k5 V7 c$ p
]
: X" ^. v( M: Z0 Y& n! Elet k 0
* Q3 K* c/ o; ^6 flet new1 0
+ h' m  ~% D: Z9 K* X) }; m% M4 Awhile [k < people]
( y8 ~# @! V0 n7 ^! U[4 d- T" W* U/ X) `! J/ L1 E8 D
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)$ e" |, V: g6 ?5 d( J
set k (k + 1)
( A. H! D. R0 K$ T* x4 S]6 T' R% B4 y2 {- v8 g
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 4 Q( K. x' P. m+ K
set global-reputation-list (replace-item j global-reputation-list new)4 ?8 [% O& \) W
set j (j + 1); V( ~7 K- ], A6 a! Q
]: d0 c* ^% S% ]# g4 o6 p
end
$ n; B, O. Z  g- T* J# H8 w
4 Q2 {8 Z  |# f" A+ ]8 P: g, G
7 I4 X$ Z2 I9 U3 h+ \
* o6 z8 }3 i: ], U, ~, o0 Hto get-color
' C7 m5 L+ ]: e
9 F6 Z& i+ q, P/ c( j; e$ tset color blue

9 D1 t+ y# g! Y5 K0 h  U. T) p- Bend2 d4 B+ r* d% \; n, H  S: R9 Y' m( N

8 O1 [1 F' e8 L3 a  n; ]to poll-class
3 S! S$ R& [0 F6 \+ iend. e& r- a' w% ^
% X$ y0 i# `$ S, ^
to setup-plot1; K- v) N8 I/ N( V
1 J. n( _$ c; Z; `$ m
set-current-plot "Trends-of-Local-reputation"
* R( C) ?3 J6 }

7 K) h+ w  n( v  Lset-plot-x-range 0 xmax

. b# l1 h7 g* R# Z( j% n' \  q; q8 S' q( H' l# n! `
set-plot-y-range 0.0 ymax

1 o4 b0 h8 f2 k& Fend
& G2 b2 q& a8 L1 l! L+ W: d1 b( z' }
8 l) R( J- T0 s: Dto setup-plot2
( m: n! }' L  L/ T( F9 p  E4 I" C2 X) e/ `
set-current-plot "Trends-of-global-reputation"
; L4 K5 y) u0 h4 D; u* Z

2 a# F% E& z- n7 W( n4 W& m8 hset-plot-x-range 0 xmax

- f+ l% b4 S9 _$ e2 m( n
6 S$ S( H6 y5 L; |9 _$ w6 cset-plot-y-range 0.0 ymax
4 {3 R8 ?! E& Q5 f$ R6 P2 R
end1 b  G8 j( ]4 |  {# k* r. b  C; q
: M  v! ?$ m: o# ?+ j7 D
to setup-plot3: e6 D+ U# D! v

$ b9 ^5 \: y" ~" b) t1 W( ^% {2 `set-current-plot "Trends-of-credibility"

, p; Q& w( r2 P; R" o- V3 R# D/ ~0 }& q2 O
set-plot-x-range 0 xmax

4 I8 f. C3 j2 M: d+ u5 |% _* w( m8 z! N  [" m
set-plot-y-range 0.0 ymax

/ h! E8 [% k5 a' N: H) }( F  U" Qend; u2 e( P. q; X) Z8 q7 l4 M/ `
" T: `2 X' G1 D
to do-plots" J* p- _. p; ~
set-current-plot "Trends-of-Local-reputation"7 C: M7 z8 k1 Q/ N
set-current-plot-pen "Honest service"
9 e/ E' I- ]  s$ C: uend
/ z, k) a% b+ X
2 n- C* f; d" s. K  y[ 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.3 Z$ a+ _, ^! H
0 L, q) T* g7 m- K
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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