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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:
* k: g$ g+ c% V; M6 Ito do-business ( I. e7 s  ]1 O
rt random 360
5 H) ?8 J3 N! K5 y0 w: w fd 1
' l8 g5 e7 R) ]* O% ?; q ifelse(other turtles-here != nobody)[. I5 s- u. P" l( @' a2 k1 e9 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.5 Q* R3 J1 b$ r6 z. P# d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, |& d5 F+ C6 s0 m( {8 T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
, N4 e& }, g5 u* x   set [trade-record-one-len] of self length [trade-record-one] of self
% Y6 l# J* t) Y: L   set trade-record-current( list (timer) (random money-upper-limit))  J5 L8 i/ w3 C( U) |+ N+ V- G
9 X4 a9 X9 A! k% U) u4 x
问题的提示如下:6 ]  \" e& p7 J( P: D: O

. ]8 Y( a6 G: l1 G6 @error while turtle 50 running OF in procedure DO-BUSINESS
; g$ K3 ^% z& W- W& M  called by procedure GO
8 Z6 _) Z- |% Z3 K5 JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( x% P$ }( P  b7 j6 K
(halted running of go)
/ V# H1 [% Q' ?3 q5 K
, k  b4 |  j1 z" |4 T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~~
% _% S, J  G4 D' u8 o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: j# R* A1 Y' H+ b! b
globals[
' R% E3 P9 m8 \6 Cxmax
# ~! R( K( ]" B! u# rymax7 X- `  H" H+ Z2 ^0 N. [
global-reputation-list
. Z2 ?8 H! N. A, L# M
' O0 R; K, A# ^  T" d' t3 s7 e# F;;
每一个turtle的全局声誉都存在此LIST
7 C. }$ ]" E2 {0 X3 z5 |6 b( O1 fcredibility-list+ t; V0 J# O: r: o
;;
每一个turtle的评价可信度1 a& T: E8 n9 w8 ?9 f
honest-service
" U* k2 n% _) |7 b! G3 punhonest-service
+ [: T7 p% L; s8 R, f6 Boscillation
- Z5 `; ]4 z. n; v$ @# S! krand-dynamic2 P& u2 K; i( X+ Q" n3 e
]' H" t, H+ t0 F
/ l, p, A0 v3 M3 K0 c
turtles-own[* H0 Q3 J+ Q0 h# X- O
trade-record-all
$ p/ \8 K9 ~! ~5 H+ k;;a list of lists,
trade-record-one组成3 Q. Y! ]1 }4 U+ {1 c- w5 c. N
trade-record-one
7 L8 k7 `& }, J- K% z, ?( o;;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* ~1 S6 R) A* e& c2 I1 u, n/ t5 \7 U( w- m/ p; W4 |
;;[
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]]
4 i& {/ k) B3 b8 v2 {8 z( K1 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]
4 K& C& y% k* h$ Y& v6 v! c# V5 c; L$ scredibility-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$ _4 y% _, o! W; }/ y/ g1 q9 i
neighbor-total9 p! D. p! e2 e- l* b
;;
记录该turtle的邻居节点的数目
- k  N! q# T+ \trade-time
8 j. h2 Y4 f/ q* I;;
当前发生交易的turtle的交易时间" Z# u4 O5 Y  U1 `
appraise-give2 {0 d  d2 N; k% ^" T: T
;;
当前发生交易时给出的评价/ c) ~3 Q) T, {8 y% l9 V
appraise-receive
" W2 |" ^* d% _  E;;
当前发生交易时收到的评价
5 D8 L# a6 j  f0 H: O. Uappraise-time
$ P7 s7 r' \/ C0 x. o9 v;;
当前发生交易时的评价时间
/ d" C% x* o8 Q' Qlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉# b1 y* Z+ ~( g3 M8 f. @0 q; w
trade-times-total6 o: C3 ^0 C9 ~+ J- {# j
;;
与当前turtle的交易总次数! l% C3 R3 s9 B' m; o& V
trade-money-total
  u$ ^. p8 P+ J+ f;;
与当前turtle的交易总金额
9 `% D- J! n) U1 U, `local-reputation, x& D, ~- c  @, s: h8 M
global-reputation; L" ?# v% T8 c1 q5 f) C% C! Q+ I
credibility
+ s( z1 M3 u( t" d6 p' O;;
评价可信度,每次交易后都需要更新* o1 x0 t$ ^/ M
credibility-all
* A5 ]/ w7 q, e- m;;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7 ]0 q6 v3 }% I% t! Z+ h! N( e; ~
' n, O5 u/ P: u# U7 u
;;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0.55 F4 S+ W) c4 `& p' ]
credibility-one
: N2 L$ p2 d5 g, D1 J;;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& H8 W* K' B! L& @4 g, X
global-proportion, ^/ c  h! b( E, d3 [  p
customer$ e4 H, c$ ?3 x
customer-no
; M" d- a0 M5 c& w2 wtrust-ok, s. M  v' i, y1 h" w9 d. S, ~2 N+ f% p
trade-record-one-len;;trade-record-one的长度/ E: }+ v' R; T; P/ h( j' j8 p9 o/ i
]5 h; d2 X% ?4 B2 T$ `: }

% e. Y1 K; Y4 d/ ~2 d+ V;;setup procedure& ?% y( x3 l0 }' v
/ U) |1 K( _) w2 d* X/ A* D
to setup
% F* p2 y0 `8 N5 @
* Q# b/ k# ?, v; u4 nca

1 c( H0 `8 S. y# K! F( M4 M1 `
! p. N7 s6 ~& p0 j+ v' e1 Z1 hinitialize-settings

' ~5 z, K2 m/ q3 T  k3 p5 R0 l
% V1 ]: q7 ?5 R% \7 bcrt people [setup-turtles]
5 Q' ~3 E. S9 T
9 E9 U5 f8 I8 l0 L+ e! Y& O
reset-timer
# {: J4 C/ U* y- y3 _* n
' f! Z! s1 U$ ^1 v
poll-class
6 ?1 D% [: m# i! _0 j+ P4 A$ |# s
8 [9 y7 |  F# W) D$ _: B! Y& O
setup-plots

) P, n# _' T0 q' `  i2 L# V$ t& I. Q, l
do-plots

7 r: o( c: _. U, I" B3 ^$ W- H3 hend
  P( ~4 E3 w4 p$ o# w
) Q9 I' A) L0 N7 Kto initialize-settings
7 U: T; U' n% o- s  P" g# `
$ t1 n* O+ N6 V7 ?& L  k6 W. g! z' Tset global-reputation-list []

7 K8 f8 Y! A" W
, i) u/ k8 n/ r0 oset credibility-list n-values people [0.5]

) Y0 D4 H9 }/ }4 K1 ~5 u* w) @2 Q  v
( T# ^  M5 b* q6 S% g1 Bset honest-service 0

5 z7 a6 D/ |) U9 ]" Z7 S  _/ i/ Y+ m& n
set unhonest-service 0
8 I9 t! G- D; L& ?

) s4 \9 x- B8 Z4 Iset oscillation 0
- _: Z# d& Y4 y" }: d5 a

8 H8 \% ]6 F2 j/ v' fset rand-dynamic 0

9 Y' |, a: x, ?1 P3 Gend. O! f+ S, I" }3 S! {3 j! {$ Y

9 G$ }& |0 Q, K7 n2 h$ vto setup-turtles
6 B4 N' I+ O, V) P+ y0 _set shape "person"& h) q4 e8 s7 m2 s/ s0 h
setxy random-xcor random-ycor5 `6 n8 q, `) {& |
set trade-record-one []0 z5 G, j+ c8 i2 Y  ?' I
) _3 L. N: O1 ^! }9 }. v' E" C
set trade-record-all n-values people [(list (? + 1) 0 0)]
( r+ V) A5 n. x( ^/ F6 ?( L$ {  Y- _
, |1 u3 s/ C8 e
set trade-record-current []  _( m& r+ _) C9 K, u' |1 g4 K5 X
set credibility-receive []
% r. s2 z) O& k- q& {+ m* l7 Uset local-reputation 0.5
; S9 F/ ]7 s/ B+ p8 Rset neighbor-total 0
' _" k9 }" v! ]set trade-times-total 0$ l5 {" o5 B1 x7 h- w3 O. q
set trade-money-total 0
% |6 Z6 E4 s  w1 Wset customer nobody8 D) ]8 v; U9 s
set credibility-all n-values people [creat-credibility]: x/ R0 \5 F- @4 x# U1 K
set credibility n-values people [-1]$ ?) f( e% i$ i1 l% u6 q0 ~. @9 i
get-color6 W; ?( v9 P# |% I$ p3 H6 h
- h. p- l# @( U: d: G5 R, s* S
end& f2 l; c6 \9 O/ c! K* L9 J
% G7 p: |- r4 d6 i
to-report creat-credibility
# D/ ~9 l! D% d7 |  rreport n-values people [0.5]
3 S) K. H# }: C8 yend2 V1 k/ _/ J3 g* h, }; ~( B1 u

: i' O) A. J9 ?% Fto setup-plots+ f  g4 ~. U5 V) |+ R, K

$ K& t: {- P6 P# Q/ w& Z! H: rset xmax 30
+ }  T$ t* E; t2 ]' o
  Y3 v- T2 r$ f# s) |4 P$ Y9 m7 |  W4 a
set ymax 1.0
/ ]  O* w& [# {, P2 o

6 j2 X+ }( W2 |, [1 O9 O9 Wclear-all-plots

2 a  r) U' n# C% g" n0 I; n
5 F) `4 n: p0 \- f9 f2 s. msetup-plot1
% }. p/ q3 D$ i! a2 A9 Z! D

; P9 y5 v! K4 }% ~6 d# y/ Bsetup-plot2

( d* B; y: N( H: \( t! V! }% W( Z; G
setup-plot3

. O! N4 m+ \. ^6 Gend3 G; V( K) O0 f8 a, g

7 n/ t$ r8 `# g;;run time procedures3 c# c' W' d5 M0 n- O' I
# y8 c) m" M! S) i$ J( [
to go
  r: D0 u9 |2 O: {) Y
* s0 n* E9 c/ Q3 Y1 fask turtles [do-business]

5 |# l& F) V, p. \' c( g% tend
& ]& f8 H) {7 O, d+ O, E. @, E+ P( Z* A! |
to do-business " u: L3 f% n& ]( S% J: K# @! c5 c
6 J, O( L9 G9 G+ N1 L

7 Q6 p4 |! O5 F  l$ @rt random 360
  o" ?! f# C: W6 o1 Q  U& H
/ Z: M% t9 o% A# S6 ^
fd 1
" M# p9 Y" ]8 P! E4 Z7 x
2 b: Z3 \0 ]$ `/ U9 `8 N6 A, Y
ifelse(other turtles-here != nobody)[

" s: _, L" A2 a2 r, [' o* M/ V5 v; C3 J0 j% n0 E
set customer one-of other turtles-here

$ b3 K7 O' v0 B* Q" W! S3 D+ I6 |$ A$ `/ e
;; set [customer] of customer myself
; u" P/ B& P& n' T6 g
6 a1 u/ i5 @7 O# H$ a5 G
set [trade-record-one] of self item (([who] of customer) - 1)* k* a0 ]6 P4 W) f2 o$ s
[trade-record-all]of self
/ N4 v+ f  E9 o5 m! F3 I;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ W) H$ f. [. `" C6 ^4 i- n' j! u% g
set [trade-record-one] of customer item (([who] of self) - 1)
- n; a; S9 L8 g* ^* B[trade-record-all]of customer

4 p4 ^8 t7 ]9 S/ t
9 N& ?- t  Z3 v& t: C! {) F4 Qset [trade-record-one-len] of self length [trade-record-one] of self

9 k1 X" f% B9 a
8 h0 i2 z- v$ {+ Iset trade-record-current( list (timer) (random money-upper-limit))
  x* c" q" s4 W, _% y8 i

) D/ h# I0 N0 W! z. dask self [do-trust]4 @, ~  T  D0 u6 v- ?6 S
;;
先求ij的信任度8 D7 T4 |: P6 }2 F
- X& a9 m) L! V& i. O/ v
if ([trust-ok] of self)6 j- c% P0 I, J. F
;;
根据ij的信任度来决定是否与j进行交易[% W$ h0 M% A2 ~3 X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- `) B4 B4 m- N, l7 a' F7 Q. A
$ F  T8 c/ \, s( r; F9 q
[
* d- q5 o. l8 B6 h
  Q- I! Q5 x5 w+ f
do-trade
8 c" E" U8 h9 w7 E

& H9 \4 w- T5 |update-credibility-ijl

5 }/ Q4 r4 n/ V
( x$ P+ N5 q! D# z% Kupdate-credibility-list
* w2 H1 u% t. B
6 [" k( ^" F' ^' h+ I; J% W& Q

; j9 u# C! s' w: aupdate-global-reputation-list
9 t5 f) R9 z  O5 m; K

$ `- O1 k4 f: f3 }poll-class
4 M8 Z$ m! n4 v' w% s6 x" C

4 L( g, }% v- B$ }6 o$ cget-color
: [& f, P7 y1 \; D9 l' N. C, r

) f6 f8 y# d) ]: z]]
) O6 U) Q+ v3 W
! p+ A7 @1 }5 q) ]* o+ H1 r2 x& U;;
如果所得的信任度满足条件,则进行交易* w$ C0 g& ^# F8 Z4 B  ]  I

1 n6 q; k/ P9 y0 ~0 R6 V# D[
: q. |5 c  U! r
) l4 p" g9 ]$ S- T7 h1 |
rt random 360

: \/ ^7 G2 I& j; y! g; @: N! x& W# s! ~: Y$ u4 J
fd 1
- c$ Z' z, S, `$ u% @2 z) V

, D1 M  ]/ S/ p& U, e+ Z: S]
5 ^- k' x2 y' W" \( U

3 S6 A6 {# B5 `* }9 B# c, h' send
; B8 d" G/ k- ^  T: ?# ~# d
4 w5 X! f" m' u5 Y. ?% }
to do-trust ! z6 |8 H8 i2 b% }0 [
set trust-ok False
2 P" y( t4 N) O- z6 I1 {  m7 F2 Q8 e& W8 l  \8 T' w
. L7 @) Y9 Z& i" H/ L
let max-trade-times 0$ h6 o" M' X( O
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& g4 j% z/ w: h( h" i" B$ Z3 Hlet max-trade-money 0
8 }8 z7 j, I. q& I& {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, ]( O' q9 r- u- p3 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))
7 F( W; e- h( q2 p, V' V; t' ]7 _4 w0 z/ X; f

9 o2 j: \. b9 v9 R) `. Bget-global-proportion# C6 L6 N, o" P/ \) x0 u
let trust-value6 Q; x9 p4 k! ~# h- L5 q- u$ [
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)
- g* m$ q) q$ M+ R3 p# F
if(trust-value > trade-trust-value)* @' T2 ?* y* H; |" |
[set trust-ok true]
, q+ X" I# T' u1 u. x: Z* B8 Jend% l0 J$ y0 K6 B) a0 O

6 A4 W+ Z: }" H! A3 B, V6 i; m6 Zto get-global-proportion6 U. ^( r5 p  b! c6 J# r
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 a3 p- ~+ }4 b[set global-proportion 0]+ a, s, O% }/ E' X3 w0 X  W9 ?
[let i 0
- `8 }$ d& O6 P/ H; M0 H6 mlet sum-money 00 }+ v7 A( @( o( U, y) m
while[ i < people]
/ Y3 H5 O5 O; }, @* _# ^( K6 @[9 W' u- B: J: R" i$ s( s3 |
if( length (item i5 Y" O- a) H  w/ ^  l8 A
[trade-record-all] of customer) > 3 )
/ \4 {. q) M* v; M8 R
[
. G. ]1 S* v+ B- _  P0 gset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 Q& O( J6 y! N]
. o5 Z' j' F) K1 w) N7 S* k]! N" _# v0 O8 I5 P$ g* D: x
let j 0' v, f2 Z: m1 {* C/ J& r
let note 0! k( M! p* T, a* ?" n. Y
while[ j < people]; E2 x3 f, @/ Z0 R* D; }
[) _9 M- n% L, O; G  @9 z; z
if( length (item i! f% J6 N! l' g7 q
[trade-record-all] of customer) > 3 )
2 r* H% v6 e/ e! s& q; ~0 B
[9 H" B! `9 B3 T1 @
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1): P; c+ x" i7 {# z+ w
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 v% @  j  e' f( t. x
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 V- T$ B& v- w7 D  v7 @; F]& K& L9 z. ?  M2 X
]' v& v# v8 V- Y  l
set global-proportion note, ~' O; ^+ w. Z- w* F
]
5 [) K  S7 X( d4 }9 U+ b8 j, fend
! o- d7 R5 f% I! c
  [% u. W( M6 A) Y% l) Pto do-trade- h7 C5 T+ i4 H# S) J- _& J
;;
这个过程实际上是给双方作出评价的过程3 h4 c. A2 Q' Q6 l. {4 [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
, H! D: I8 ]5 B4 Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ i, N: l/ V% w& e! X! u* s) u3 P! oset trade-record-current lput(timer) trade-record-current
* ^* k. d% P3 A; f;;
评价时间4 p6 M- _5 `7 x
ask myself [8 w* C/ }7 b' r
update-local-reputation3 j: I" ~( F/ j2 d* k9 F
set trade-record-current lput([local-reputation] of myself) trade-record-current; R( n2 _$ C/ N4 H4 h
]  z- C- U2 `. }! ?( H0 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
& j2 W3 @. C1 f3 X/ j; W;;
将此次交易的记录加入到trade-record-one, x( `& n* S3 i( w, I
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)& ^; V3 ~. I9 M
let note (item 2 trade-record-current )
& v: ]& Y. D; m& K# s8 _8 iset trade-record-current6 E3 ^1 D( C, w  I7 m* p& m) p6 g# t
(replace-item 2 trade-record-current (item 3 trade-record-current))

. u7 z' G9 E2 b5 F# d/ I1 Z" R0 Yset trade-record-current) v, @2 v3 a/ c% {
(replace-item 3 trade-record-current note)2 ^2 q* j2 E  i, x' X! P9 Y1 P" B
6 L& ?3 V' {" P& p% m
1 D+ b( Y( ?. k3 g& [) }/ @5 q
ask customer [* g! c# X0 ^* C# y7 Y
update-local-reputation( }/ c8 b# k' _) X* m* ~" N
set trade-record-current
+ J4 p6 u& _+ |6 D) j, T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

9 C- i# Y- z- r9 z]
+ R2 B9 K' l. q7 N; \
+ N" ?: W3 V, q# F8 J" Z

3 p6 w& e; q; g2 V& h8 K1 Uset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
2 t: s* [4 o' j7 z7 D
, E0 t  y+ q! h0 M
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)). q) ^7 |5 W4 D& ^' w, q
;;
将此次交易的记录加入到customertrade-record-all
2 m- }: I! o) L# Wend
4 E: T) O) R3 l5 h6 _
9 W! M9 H6 H3 K5 W( `to update-local-reputation6 `! H; G3 u; y- `  E
set [trade-record-one-len] of myself length [trade-record-one] of myself9 m( R! Q# o/ ^, k( ?

3 ^4 M3 u$ r5 k! I2 K" O
4 }6 f+ m# x! M2 @1 X  |;;if [trade-record-one-len] of myself > 3
% G8 N& u6 ]7 ]3 L9 E/ \$ p+ n
update-neighbor-total! J( t4 ]5 t$ |
;;
更新邻居节点的数目,在此进行
6 w- N/ g+ f; R, T& wlet i 3
+ u' l) Y+ f' r8 L8 t* B3 V* n  \4 ^. vlet sum-time 0
- w0 ^$ P' f! ], |while[i < [trade-record-one-len] of myself]4 j* N: c4 F* u& I6 G, s, b( K0 @
[
1 z3 _0 X4 ?$ L9 `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 W% m* }4 b2 }. K
set i
+ D7 F, i; D2 P* v- f% l' X0 Q( i + 1)

6 ]' j" ]* z8 P9 C. j2 y]; c; j+ P- d2 c! d# q3 Y4 p
let j 3
" m! U; Z: R, ilet sum-money 0
7 G! H5 W$ H+ j% S0 |while[j < [trade-record-one-len] of myself]# K0 q3 |2 W% H& D! P, m$ n- }
[7 i+ S! T) E# u) p* K0 W" X! L
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)  R8 U1 _! x) Z* d. L. M
set j
  D3 \, E% P5 A& X2 f( j + 1)
& i: i% i& ]/ J# F0 c( t
]
: E6 v% r; _- |0 y* Tlet k 33 [% j' y9 V% r2 O( U! W
let power 01 G: v7 o* L/ m' k
let local 0
2 P- E5 w5 ~" z9 {$ Vwhile [k <[trade-record-one-len] of myself]. @5 K! f4 o& z; d: t
[, t" I" p& l* d, V! N1 [  F3 O; G
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) ) g# V% H1 G5 w" c: F# W6 r
set k (k + 1)5 L1 L; A$ _: v5 r
]  e1 z# L) o7 t4 F0 G; C+ O' d6 J
set [local-reputation] of myself (local): i. c$ j" S; x7 r9 L  G0 _5 f: ^
end- F* G2 h1 O" h: {- X

% ^, G! z8 R- T& t$ M/ \* l8 [2 kto update-neighbor-total
/ z! k+ I5 Q0 _  _
( P) ~) s& `' C7 P* W& l9 N0 v" zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 V# q- W  m, f
" T0 ?, z8 a% W6 }

+ c! j7 _1 |3 o; m, ]5 z) gend
5 a1 j1 w8 m: \
1 G1 {& r0 V6 u% A/ H$ Jto update-credibility-ijl
- Z" T6 a% V- `: k  _3 I3 y3 s
$ o* L1 m- E3 [* b;;
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。
3 [1 O4 w8 o; y) b0 H. p2 xlet l 0
9 x2 Z( j* ?, Wwhile[ l < people ]4 e* l: ~' z. ^9 |, [) [  s
;;
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3 Y, k$ H4 j$ W/ J2 a
[5 E8 p- V8 p0 L. Z2 t' {! Q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* L0 P: M1 z8 z7 I% [1 {if (trade-record-one-j-l-len > 3)* K+ H* m) C6 X, _7 @0 Y
[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-one9 u6 r2 X2 c3 n( M
let i 3. l$ V3 {% `9 x' t" |* [
let sum-time 0
6 u4 R3 K! b1 D0 I8 O& C1 dwhile[i < trade-record-one-len]% C. a1 B3 m1 d  c) w4 ^
[- [! S5 F6 a7 s
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )2 ~* }& i& R) z( a# c1 ^( `  z+ [! Z
set i$ c1 B" f; @8 S. r8 C
( i + 1)
, T2 `6 t. Q4 r8 Q. T+ o6 t
]
3 d, Q( e& n( }/ K5 olet credibility-i-j-l 08 k$ @8 ?; |9 q; r' Y
;;i
评价(jjl的评价)
% D/ r& Q( |; K! h- Jlet j 3
9 y6 m' w9 v; z; u& U4 Qlet k 4& n2 H$ q2 v  |# t
while[j < trade-record-one-len]
# [& J/ ?; c3 x+ U% x* b1 a[
4 w7 L# F4 U1 Q7 Y3 lwhile [((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
9 B% H4 s# }: e; M; E; N6 w: rset 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)8 q) Z! w4 ?; `4 U2 D; x9 F
set j
( [0 |7 x1 w* x1 c9 N( j + 1)

0 K5 g. O& ]+ C2 J" ]]& w( m  c( J1 o" n1 B: x, O
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 ))
. L2 T3 |9 ?: \1 L) E* e) I- {5 x- G) ?  Y+ ^
- g& p6 }2 E2 y- @5 Z7 M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
2 z! A, {9 d. y2 Z' ]/ U' D;;
及时更新il的评价质量的评价7 F4 P: ]/ y; g# l4 Q! ^; r
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- x+ S* Q- I3 j
set l (l + 1)
* o1 B4 i. |1 U/ L9 \1 u$ G]
; M, U! a' S, }4 oend0 C/ ?; t0 M& i* H/ g  X
9 }6 [2 \, }  Z2 X
to update-credibility-list2 _5 U. {, ^( ~9 k' Z
let i 0
5 E' A4 q0 t6 R' k" W, Uwhile[i < people]
) `% c- G( }' i4 o& _) R[! O0 ?! W; H% X* z
let j 09 i3 D% [( N+ Q( r( Y& v& ?
let note 0
2 @! R- W% g1 K; ^let k 0
$ |+ D) s5 O4 ^+ B/ \;;
计作出过评价的邻居节点的数目
! I  G7 x! ]! wwhile[j < people]. |" |3 t5 i  I+ G& r& v0 b8 \& Z
[
) O% W" E: G1 {$ k0 k/ ?3 Eif (item j( [credibility] of turtle (i + 1)) != -1)
: K* G* z  o0 r/ j6 [+ o/ b/ b. |;;
判断是否给本turtle的评价质量做出过评价的节点
2 p! L/ f) c7 n/ }: \[set note (note + item j ([credibility]of turtle (i + 1)))
6 s6 [' Y, ?; `+ M5 [6 i" b; v2 A;;*(exp (-(people - 2)))/(people - 2))]
6 [: F8 l6 ^7 l
set k (k + 1)/ K. D% w5 H7 j9 B
]
' d( T; t5 S# }% |. Jset j (j + 1)
' h3 f% Q4 k' w! K]3 ]# K& q' ^1 T" }( K
set note (note *(exp (- (1 / k)))/ k)* h4 Q; p: }8 y- c4 F; U" H) i' Y
set credibility-list (replace-item i credibility-list note), f8 e) j+ W0 E& U& }
set i (i + 1)
: c# o& W5 c7 |# \: N]
# e6 g1 h+ O! O3 r5 Rend
" A+ Q  B- `6 j: ]! ?% i% B# {' N6 A* w( g1 d+ ?2 g
to update-global-reputation-list3 ?# [( y& V8 ]6 E' A2 H7 [
let j 0
# Q& i6 a+ G0 G' e, b* `! Fwhile[j < people]
# m3 M3 P$ n0 k3 X: O( D5 @[
: W& V9 p8 \3 ?0 D* Slet new 0
) L/ R6 K2 h2 `! b;;
暂存新的一个全局声誉
- Q7 J' X5 p/ c  {9 z% ~1 h5 Dlet i 0+ a& X5 n9 R8 C' E2 s
let sum-money 0
6 P& C  ?3 @6 d. l4 |" {let credibility-money 0" [( O6 D$ z; p# T* a% [
while [i < people]# w( b2 h2 P( {
[  b% o: e" S0 ?5 k5 `  S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))9 A4 `0 h# m; S6 L! ]# T4 z; u' D. [9 }
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))  B. y9 H: W! N  m9 U, }7 [
set i (i + 1)  Z9 e9 L1 a4 h
]
1 f, |9 y" x2 X! Llet k 0
$ \+ {9 F4 K2 [: m( b2 ^let new1 0' I$ D1 B5 o1 x, S2 X
while [k < people]
/ Q6 x- y  U  M[
  ]$ h, m: n; @  r' p' bset 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)3 ^! @; R, j/ I) p
set k (k + 1)8 f$ j% L8 D) d2 Y
]
6 E0 Y4 B& b0 \6 s  [set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: W% r- b+ [: w9 H6 Wset global-reputation-list (replace-item j global-reputation-list new); e, S3 @1 ?" M9 [
set j (j + 1)
4 q, X) Y# S& ]. y( G]
" E+ r) b3 @3 U2 @/ yend
4 o! r/ A0 i) b7 `
1 H% I6 F2 p% W% w! D) {: y% d" K- |. H% p
% u" l  V! n. y4 e( P1 U
to get-color
) y8 L* M$ d* ]) |# r& x2 g
; u6 n) t1 X& ]; F# Mset color blue

, ~& y6 U' f8 n3 G2 J+ B0 Tend
3 O5 U3 L$ |3 S- [* j7 Q6 Y; G% c5 J. ]8 Z& v! C
to poll-class
6 ]$ Y# J2 c8 \- p! v5 f, O# _end
, g# ^7 Z* p0 S# C* g
7 I6 q8 R4 D% Y$ S; z3 Mto setup-plot1
( p! w9 N+ u! j  @* x. U( M
( N( m% S- U8 }; jset-current-plot "Trends-of-Local-reputation"

$ q  [; f7 Q6 l" |" \1 Z
: P% B& R' {* y! }) N8 Gset-plot-x-range 0 xmax

, o' v1 K# n% w, M  O  ^5 V: m6 E
* ]7 p: F1 X- Z, B7 A" G  dset-plot-y-range 0.0 ymax
- _9 p. |- i' t% S
end% S5 I" n5 c/ M1 f$ D  L

8 T! l; a' J& W/ T( ?- Jto setup-plot2
2 K9 p; Y6 {- _) w. m* @, n7 m/ i  ]9 S) ?5 [
set-current-plot "Trends-of-global-reputation"

! G5 e+ r0 `: h$ c' j7 ^) E
- x. k& T( i% j3 p, C$ z* Rset-plot-x-range 0 xmax

$ m* ]( p$ O/ h/ V4 ]. _0 d' H% b9 ?- h6 p7 d! D& p0 c
set-plot-y-range 0.0 ymax

2 c  X1 [( ]! m5 N/ Wend
9 g0 h( \$ _8 f/ z: h3 |9 G1 D
% X2 E( `2 E3 G4 nto setup-plot35 u) n4 x. A: y9 ]: ]% k

& g, l# v1 n) K  n$ M/ E! d5 e7 xset-current-plot "Trends-of-credibility"
. N* _1 F: T  q9 V/ G

% _6 y  ?# W1 ?% D  o' A, xset-plot-x-range 0 xmax

7 V0 A: M8 A) u8 ^
) Q% V+ R5 m# d- tset-plot-y-range 0.0 ymax

: n- t& K( G/ V' ~! t5 t' Aend: C, d; }; r& U1 B  d- |
0 \( x2 U$ J2 S, g! A7 X
to do-plots' Y* A' u. u2 |$ u
set-current-plot "Trends-of-Local-reputation"* E2 z( r- U- ?, E3 z7 d
set-current-plot-pen "Honest service"( l8 A( {! ~5 i
end5 X7 J: M/ ~" y
+ P+ j9 p2 E/ S% m
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

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

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
* x8 T% y0 W+ y: L. k' J% |% N
# i: f, B! i* j7 E) X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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