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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:- j  h: m% Z( W  i7 _+ b1 g
to do-business : ^; T  s0 Q+ C! g3 r* K# e
rt random 360
8 [( P- w2 z) O7 \1 Y8 w6 x3 [ fd 13 K( X( A7 @2 E$ Q
ifelse(other turtles-here != nobody)[
3 }- G) p4 Q& m1 O1 c) O  {   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.
' K& S5 D) k, b" B   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ ^8 Q1 `' z) c" r  t) |   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 \) ~: d+ ?+ x2 b, s8 M. F   set [trade-record-one-len] of self length [trade-record-one] of self
$ x1 s3 |; Y/ t2 r3 W   set trade-record-current( list (timer) (random money-upper-limit))
1 o5 t5 B- M1 h- i% F$ g' O# p3 W" \& ~; n
问题的提示如下:
& C6 @9 J+ ?1 h! P7 o; H5 F/ c$ y5 W) u( o9 J6 U9 ?; X
error while turtle 50 running OF in procedure DO-BUSINESS
3 j! j$ L# Q4 u5 L  called by procedure GO1 r) B' ?# O: F# ]6 V1 w
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  N3 e$ V. D4 N. ^2 E: h
(halted running of go)
8 x- X+ Z0 M7 w% K+ h
' _; y2 r* F. a7 J% C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~~
4 n7 w# t* m; J- m2 Y  L% K8 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) b- D, P$ S- u
globals[
7 f) \8 w; Z- k  exmax
* ?3 U+ J9 {# w- L- L) B& Uymax
- f6 l9 o4 j1 U3 B) Kglobal-reputation-list0 o/ p2 B9 s; `0 X7 M% T: _4 P
/ y" B  J3 N2 Y
;;
每一个turtle的全局声誉都存在此LIST
) ]9 M8 J: `8 U% ?  P: Icredibility-list( b$ y) g/ L# Q7 c+ r: g- G
;;
每一个turtle的评价可信度4 d4 c! B1 _" G" q) `3 p1 u
honest-service7 V! [* M& D( Z/ ~& ]
unhonest-service' D: d5 w& G9 c, o/ e( _
oscillation
% ~" `4 J8 T9 q. s2 w$ R7 jrand-dynamic
$ c1 ~" E3 E4 U$ Q]
6 O/ L0 x4 Q& `3 J8 l5 A# H3 |5 h
4 A; L& e" Y) D; c+ W. Uturtles-own[4 D8 H$ f/ D; S" a$ ]6 u. D" S
trade-record-all
  T( N* M2 y( n8 \;;a list of lists,
trade-record-one组成) ~6 L7 e5 l' M3 r0 P
trade-record-one
0 v( _. R  Q" }* S4 b1 ];;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' O/ b; H3 C$ O+ u; z" {) ~
% n! b( }) G2 F0 M. N;;[
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]]
! I8 O1 F2 O9 `( }. h! z* ytrade-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]$ w! U' p  l$ b$ b
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 r7 u: g, ]0 j9 ?3 z
neighbor-total& M* k, B* j! I* E* j6 V5 f
;;
记录该turtle的邻居节点的数目0 k, U! k) S! y3 |) G! g! A
trade-time
3 A- q4 q# \6 [. Y, t' t; C9 m" p/ E;;
当前发生交易的turtle的交易时间
/ x4 I' n9 _# N" |) [appraise-give9 @# D: C1 M( o; ~8 S
;;
当前发生交易时给出的评价
! X0 n7 \. m0 D$ u* i# ~; `appraise-receive
) W- A+ P# g/ U6 X) f& d4 ^3 E& E$ z;;
当前发生交易时收到的评价
* @0 ^; T& ]( `5 ]' c# [9 Lappraise-time
( S; K: h: y: a. A3 c;;
当前发生交易时的评价时间# K, S, i3 R/ X$ D. L) D- @+ T
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
7 T$ }& d9 [& strade-times-total# L# Q, o) z' ]' x4 Y" Q3 i7 R( k
;;
与当前turtle的交易总次数/ G0 d& Y6 o! X  Z5 U- M
trade-money-total% O' i1 d9 u% z' ?; I% S/ r) S! _
;;
与当前turtle的交易总金额7 H- x  G% {! Z# M
local-reputation
4 Q. m' r+ _+ V+ Q/ |7 U6 nglobal-reputation
4 k* s3 u& q+ P) `7 O/ P" u9 kcredibility
" w! l- B# m% H! g: m' L5 [;;
评价可信度,每次交易后都需要更新
6 S9 B& K! J2 t7 d! C6 Acredibility-all+ D6 R/ g8 @4 J" J% E$ c4 A( 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
' M$ L% z: T8 _4 p2 y, I; ]; ~# b( ~8 _6 R/ \5 D4 F
;;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
7 o, A9 X. K8 W+ scredibility-one+ Q1 `0 R9 F3 {* k) x
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people8 [4 k9 n" y/ o* E
global-proportion
) D. n: J( V7 C& V$ {, b, V) Kcustomer
. P% F8 N. t6 f4 a( ocustomer-no' f2 j' L8 o/ {5 Z. t9 }) [
trust-ok
# R. ?- o: |# `+ K7 Z. Ztrade-record-one-len;;trade-record-one的长度
2 {" {4 m9 A! ]8 L5 }]
4 `& G0 s  d; O7 d
( e. l5 L! h9 t& `;;setup procedure
7 Q9 i7 l! r6 Q2 v' J9 Q" E2 P5 K: I# x" w& @& Z
to setup2 I/ `. R8 z- A; c/ H" m
, @* `) G# n0 A# {  d+ k" Z& R
ca
9 ~! H7 o1 {9 ]% T; B2 P

  {* z+ u& L& ~6 M1 rinitialize-settings
  W) N0 Y* x) Y9 q3 e# @% q$ N5 D
0 u* R5 k# R9 p, ~: [( l
crt people [setup-turtles]

; ?- o( |. w5 q& b
5 A. e1 k- ~, i& q4 qreset-timer
0 z& \& W" d! F+ J# l% P( R

$ `: o% o  V: U5 e" `4 z/ C; f3 Wpoll-class
  D6 k; Q+ f& Q# t, y, R
) ?, ^6 j: H/ _8 i* \& J  V  [
setup-plots
7 M5 X, \& A/ k# j- Q& A- g0 j

" L6 l% k' `1 U# W0 \do-plots
$ z" x( v( m# |& y
end
+ G$ T3 T1 b% G% j. j! O+ c' {, S' ?1 t1 ?! K1 f
to initialize-settings0 D* y7 ]# F$ A: G( H" X
5 c  p" P3 C& M6 G! a$ h7 K& B4 H
set global-reputation-list []

* a+ O+ u- F' M+ K2 a. |; b6 r% Y$ [' H+ @, `! x
set credibility-list n-values people [0.5]

+ f, v+ b1 n7 m* Z1 l5 o" V
$ [# j/ s# \" k+ uset honest-service 0
9 k( o1 ?. C' ?; ]0 ^( ^1 |
+ e% c6 s' s2 ^6 H$ Q- a% x
set unhonest-service 0
% `* f( W! V- c7 u6 p

" e, `9 o9 e: _% \/ q: H9 Cset oscillation 0

6 S2 ]% l# _5 H/ Y$ h4 t0 V# A9 z" e! G
set rand-dynamic 0
' R. X* O( k- l( k" \0 g% ], `# c
end. m4 O( h9 P6 r" t

- \3 w. Q! ^; J$ }: o2 Oto setup-turtles
" |) W* H( u  Q+ c- j4 l8 jset shape "person"
3 q+ M( s0 H0 ^9 k. A+ n4 ?setxy random-xcor random-ycor
5 U9 O, U8 c2 x4 k# ^1 Kset trade-record-one []3 J" {& K7 ]- ?  g$ J
$ @/ T$ c8 r! Y+ F+ k% p5 o2 S
set trade-record-all n-values people [(list (? + 1) 0 0)] : Q9 M9 j/ e9 w: C/ b! Z5 a' r
) X3 @- U4 }( P
set trade-record-current []8 @8 q1 E, W9 D# m
set credibility-receive []. j3 J: D, ]7 n& f
set local-reputation 0.5
( g* v! o  [7 d( h1 S+ j& P% b2 q  lset neighbor-total 0
6 e' ^. S; y3 v" Oset trade-times-total 0
0 I0 t2 P3 `5 A7 ~set trade-money-total 0
1 d2 a+ D; ]( d* W$ Y6 bset customer nobody
1 b- x7 u! V7 |3 e  H! fset credibility-all n-values people [creat-credibility]  T( \: M- ^  w' P  t2 `: ?
set credibility n-values people [-1]; b8 a8 F* G6 O- e
get-color( T- R+ \8 U1 ?; [3 T

- k3 F) p7 J9 Y  U$ k7 `end
6 e+ A5 m  G" k& c) w5 c2 p5 F: z0 C3 g" Y7 F; A" `8 I: u# C
to-report creat-credibility- u+ u4 g" v" y- ~$ n$ A; W) X
report n-values people [0.5]  ]3 n$ l; o7 p; O* A
end6 L5 }6 O7 u/ `! m8 {  h: h4 P
0 K& A3 Z7 F6 ?- a! ^9 E0 C
to setup-plots% a" n6 E$ z8 m" C8 C& K

. h. x) b5 q6 J7 o5 i  Tset xmax 30
, ]; P1 I! E1 n8 i" n/ X9 w! ~

% s. J$ Z  I! M6 q0 Rset ymax 1.0
1 T! r7 X+ A& P, E0 \7 d

6 D8 l/ d. B4 ]: B1 H2 kclear-all-plots
8 ]  Y& V  I( m5 [$ z: P
* p. I/ Z, L* S4 u" Y1 G
setup-plot1
9 r* ^. b' s% R9 p/ r

9 X% r* O8 ~. r5 ~setup-plot2
, J  |, V9 d3 U/ E  H

  u% ~$ u$ v  g4 a5 xsetup-plot3
* |0 m* e4 I$ r* ~# |: P; |
end0 O3 \' N& m1 H( {1 ]* q9 v5 \
. t, F1 T: u& w/ }! [8 F/ t9 V6 Z
;;run time procedures
$ r, m" p! _  |  W7 ?
% C8 Y9 H4 W  o/ Y3 v5 q$ Rto go
7 n. l' j9 \7 y* ~* w, L
( Y. `9 N9 C- q  O% r- Aask turtles [do-business]

) q5 g( m/ l& P5 `. u6 B) {; h! \( ~end7 f% t1 [) S1 Q3 e5 n
/ D$ ]$ I. M* K' _5 f8 J
to do-business
. P" R' a$ N0 P1 ?

0 A9 S+ v! O4 Y/ s; O5 e/ q1 |( i
rt random 360
' K5 w: i+ w9 u. `
2 S4 L: v6 o( p* d2 Y/ C4 `
fd 1
$ r0 M* y1 [: O; z( [

- I) k6 z7 [7 W( A; ^( |1 l& ^ifelse(other turtles-here != nobody)[
3 W3 T; S, o: E$ d7 P: j

+ Z0 [  |9 c3 M- g# T2 D6 gset customer one-of other turtles-here

, K* ]; V5 Z9 E
% h3 O% [3 q! o# _% };; set [customer] of customer myself
) r- n0 U: h$ p. Z

7 _% R; e% X1 L: ?# D" Xset [trade-record-one] of self item (([who] of customer) - 1)( w% a$ o4 G1 A% s6 }: E
[trade-record-all]of self
$ ~; h9 \7 V% O. a: t5 `9 ?* P' @+ q7 n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 g1 \2 y" P2 S! M
4 }7 l1 D3 t( W6 r% ?$ r8 c
set [trade-record-one] of customer item (([who] of self) - 1)4 M6 j. ~7 S' {8 {" B" `
[trade-record-all]of customer

) e  Z1 [* P! ~: t8 v2 }* H5 _
2 V: [  p4 F) F. oset [trade-record-one-len] of self length [trade-record-one] of self

' w1 O* n' ~& S; ?2 {. Q
9 v0 ^4 m+ i$ {. [, _set trade-record-current( list (timer) (random money-upper-limit))
$ z, u+ w7 T5 o2 ~
' [7 B" `6 c  ?4 h; F; ~7 k2 y
ask self [do-trust]9 p, O* B( o2 m* d+ {6 y: V
;;
先求ij的信任度
. ]0 F. v. i5 K" [  y7 M: r2 e
( P6 I: W6 ^, V9 u* E6 Iif ([trust-ok] of self)" K4 b" D+ E/ R/ P) F& }' F  M4 Z$ e
;;
根据ij的信任度来决定是否与j进行交易[/ m( R6 e6 t/ h% j& e" Z6 c. ^3 c" Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) Y! q/ s/ f: {* u$ |( [9 i
2 G- E& m+ T! ?# L: a- N) B9 b
[

9 P" C8 w6 f6 e- t* P$ |6 o' C) B# W  S/ V; \
do-trade
7 G( m% _8 l+ A) }6 _- e* R" m
& m2 X  p! @& ]) `( W
update-credibility-ijl

7 P2 @. _7 ^% k- i/ |
( V  z% G+ x. f7 D4 eupdate-credibility-list
: o* ^( W: }( o# M4 u( C- R+ Y9 Q
! X( c/ j. O; z4 i$ K4 Y

& T6 }4 b* k. [& [) h7 mupdate-global-reputation-list

# b1 d( c" F; H
. n% h; i' E! f# X2 h9 {" p! Q. Tpoll-class
  Z4 p3 Q. _$ S; J! B# m9 u
4 T; K; @  b% K
get-color
2 g4 k$ a/ K: @7 T0 |, \

, r- Z. v4 x* M]]0 l; v; F5 [5 i0 x  \, ^% N6 s7 _1 C

4 B: B7 G6 u4 O& W; ^$ g;;
如果所得的信任度满足条件,则进行交易
+ G8 a. V0 A; d0 _% R$ g7 U( R
* p0 w: `$ v0 x* Q( p# a" }[

, Z- ^6 M) d% x8 H" \, J) X
# f5 i  V4 u5 L7 k$ r0 f! u+ zrt random 360
5 Q! Q5 L& |, u2 R2 Q, |
7 L- a( \! {: l' Z5 D
fd 1
; [2 B! [) k3 F& T2 l# ?

' W  `$ I) L7 j% M4 _, G]
" r5 u3 P0 `" `$ d7 F' m1 P& ?

4 q% j) a9 d9 ~7 ^end
+ ~; i1 s6 G* g4 j/ r8 z9 t

1 q+ o( i. |* S* o6 F! L- g# |$ Vto do-trust # P( u; M8 g% y4 O; c* [
set trust-ok False! m6 V, \7 j) }0 v+ m4 t! W# K
4 N9 A) F8 k6 S' K
: I8 S+ P8 {6 V6 `( d% k2 x/ P& P
let max-trade-times 05 e2 e1 a9 ?! A. I& D1 k8 U
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]7 h* I* d3 r7 A, |
let max-trade-money 0* s% Z3 p8 t: u( f/ u2 B1 ~
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
6 Z' r- l# ]8 e- l; Qlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))3 X& Z" W. o, u; r7 D
4 S  M8 n4 U# L7 h8 ^
' H) j! Q( `% y1 }3 C
get-global-proportion
' l8 F* \6 L2 L& @; M5 \let trust-value
: P% r" [$ e% w, P3 _8 `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)
" W% b$ Y/ t% p. v0 `6 g4 V
if(trust-value > trade-trust-value)
* `; l' ?! _6 @3 i/ K9 P[set trust-ok true]
6 S! _  h& o8 l+ v- \0 Bend
1 |; I7 J- h* Z; |6 X. e6 @3 ?
: d6 D1 B3 B% nto get-global-proportion
& u6 T2 r* q6 T, P5 ?0 B& mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( H9 Y; ?7 X) ^4 d8 f; N  N
[set global-proportion 0]
( O0 F( W) m8 y% D9 _& {' z' e[let i 0
  E0 ~$ i/ i* T+ Y$ {; d- ^: Clet sum-money 0
) @5 C# I% I" O+ |( J1 Swhile[ i < people]
+ t4 _7 ^8 e9 G8 `* `[1 y' B0 r: ]5 X/ J# S# Y+ e, b
if( length (item i
3 x3 G+ o8 Q' C4 T& K[trade-record-all] of customer) > 3 )

  ^2 K; t" ^' t; C$ `2 b" Z1 b[' ]% n; y+ E- y9 i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))  Y: [9 S) M# {2 v4 x- d/ {! j
]6 ?. {8 D+ M$ V, @  w+ ?, x
]
. W' H, W$ I; Jlet j 0
3 s2 L7 E) o4 i; h; u3 _let note 0
3 g% Q5 r6 C! F4 _' m. f7 Mwhile[ j < people]
  E6 X, s% T3 P' ][
: @: b* f/ T/ z# s3 Oif( length (item i3 G+ r. ^: F% ]% ]
[trade-record-all] of customer) > 3 )
& q( h& @6 L2 U0 b, w( b; c
[
0 V3 ]( ^; X! W. h4 @( t+ R' e* lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 U9 T$ B+ P% o* C[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]9 |! t/ ^# a! U" D; V2 q- Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ _. ?7 u1 Q, G/ r$ d# w7 K% V( @" n" U]
5 L, y) y. T2 ^5 q; e]; @; e+ \6 B; i* D( @& R$ R
set global-proportion note( j+ v. h! r1 c" O1 G$ M9 F
]
. K6 ~, ~. ~1 z& U! |5 E+ }7 x! zend
! x& z  H1 m* \! F. s9 {
2 B4 n% S" E4 I2 P  ?to do-trade
% V; ?* D8 C+ a/ @;;
这个过程实际上是给双方作出评价的过程
. b2 I% a$ B+ ?- ~& \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 d" w% B6 r6 J6 @. i! F. c$ F5 z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
; k2 z7 o( S9 l+ j4 q0 {set trade-record-current lput(timer) trade-record-current3 \" g" O: _, {
;;
评价时间
, P0 v4 G  F( ~+ E0 cask myself [
9 J0 Q% x, _& _0 u7 A! h6 qupdate-local-reputation6 l- p) L" c8 b' i
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 z8 w- v" ~9 x]
+ q  d) X6 |* z' s: d( ~set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 g! U# c8 a) x1 o0 [# F;;
将此次交易的记录加入到trade-record-one
5 ~$ b; F5 T+ ?# J' Aset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
2 z/ T* q- h* h; {  F0 K9 Clet note (item 2 trade-record-current )& s+ f  F5 g% E8 d/ g
set trade-record-current, F1 s! n# H* U3 g! X, n
(replace-item 2 trade-record-current (item 3 trade-record-current))

9 a% J7 ^) m6 \4 L4 b( aset trade-record-current- i3 W4 Y; r: r
(replace-item 3 trade-record-current note)' U3 r; i( {: J8 g6 v# q1 @) H

( t6 r+ x% X; v) O
# T: ^: _5 B; r) _( z6 C* r
ask customer [
4 X6 \  y2 V9 {% Q. i; ]update-local-reputation! |+ ^, ~& a. _. N  `5 h
set trade-record-current" F! U- |3 O" a; l8 F( F+ \: _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' u7 Z' Q9 o+ x' h5 G  W: Z]7 j# x- T$ ?5 V3 ~) J
2 `# _7 W  E9 u) r1 y4 @
' g: w% o9 `6 w5 L3 G& V- Z" M4 Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- c4 M% U4 Q9 A6 m# y' f
7 z" V  A* i2 z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
0 E, d) u3 s) S  L1 M6 `, m;;
将此次交易的记录加入到customertrade-record-all8 ?. @& ^7 q9 S
end
' y' h; j7 ]8 Q7 F6 l9 f! L# r- a3 s8 G- x, K3 K
to update-local-reputation
5 h8 f$ P- t# ^, I; r' fset [trade-record-one-len] of myself length [trade-record-one] of myself
3 f1 e0 x% K7 H" q  J9 {$ s/ ]! `: Y/ y% G' Y

. q  Q) L0 i9 h/ r( n8 {;;if [trade-record-one-len] of myself > 3

3 R+ Z5 F) a1 ?% Aupdate-neighbor-total) t( _' x5 c2 Y0 [3 `
;;
更新邻居节点的数目,在此进行  X: k, A. T2 v% d4 M( A
let i 3
  K3 d% u& F% Q2 g* \let sum-time 0( H1 p2 A+ x2 l( L4 z
while[i < [trade-record-one-len] of myself]
) I3 |0 D1 t8 w1 V9 w4 s0 \$ B[8 w0 k0 \3 S6 Z6 M
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ N4 x$ \; V( }7 q
set i  w; `; V% y/ z% N9 G8 h- F9 O
( i + 1)

2 l4 ]& w2 P1 w9 m2 O! i]$ H/ }- u9 I7 [, [0 [
let j 3+ K& D7 R9 r. |9 N% k9 ~5 z
let sum-money 00 M/ e" Q% \# ^- Q) U
while[j < [trade-record-one-len] of myself]
# H4 o: t" Q% ~6 _0 `; Z# k% b- d[' `+ T+ R+ @$ X" O" H3 d8 T- e
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)7 G" H) M9 P! L9 b- n' ]' o* l
set j
# |0 [2 ~) d) ?( j + 1)

  `( l1 g) j) N8 {5 @+ d]
) J( O+ ^6 R! v( n7 S; `9 hlet k 3
3 [& R" `& m. @" ^) l4 flet power 04 h, R; }1 `, _5 M! k6 M. F
let local 0. U& X+ M, c$ [7 v2 ~6 y, m
while [k <[trade-record-one-len] of myself]
  X; c1 h$ P; m  p* {4 v5 X[
$ b( x0 h$ J5 i2 t2 D# gset 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)
" g1 ]; I4 B# [# S) g8 b* z+ Oset k (k + 1)
( K; I) o: @; e0 q9 E]
" T: g9 U7 N$ D, t$ _/ Z  Y* dset [local-reputation] of myself (local)
& _" D: `5 N5 A/ h# t* Cend' q  X, B% Y4 M, n1 E! O- l

4 r$ j+ j1 L1 s+ _  Y+ ^4 m+ }to update-neighbor-total
, L  u. S4 Q5 H( ^$ _
0 L/ `8 Z3 C: Q1 V2 `if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]: T6 E$ c4 X, p
( W' W% s, k0 R7 M2 u
, k6 Q8 q6 L3 Z. Z' ]& X; C
end
& l% Z: ^5 Z' S8 S' R: @2 S( D' A5 l$ z1 }
to update-credibility-ijl
* Y/ H* ^0 H# g9 \, W; ~9 m$ J
+ G: X! H/ r  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。
( ^) O4 w9 q( `% P- qlet l 09 h: T0 h, ]1 V! v
while[ l < people ]
, S0 b( I7 P. d* \# q; F2 t- i4 |/ u" [;;
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
5 L. a( V- J) I% E+ G" a+ J% P9 z5 U[
/ ?, B1 J8 ]: L: T% t! ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer); m) r0 j+ O" X5 w* O( V1 y
if (trade-record-one-j-l-len > 3)
/ y% a( y7 ~  h$ F1 s! F; M[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
; p9 k3 I3 S, N# a% ^! x1 rlet i 3
9 X' h& W1 ?6 r- Ylet sum-time 0
/ y: d1 v+ \- M: r& owhile[i < trade-record-one-len]7 M7 [! b% N) f0 W# N1 X  c
[9 |/ I0 i" s/ U9 B5 R: R9 H
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )6 B$ T8 [. n3 ~
set i1 s0 g. a. a# x: n; g! S( M1 ^5 r
( i + 1)

- J3 @; D% \: W0 j]
. ?) Q4 F1 w0 e/ a( g, E' V* |0 Nlet credibility-i-j-l 08 L0 E2 A( P% Y! N1 R' M
;;i
评价(jjl的评价)
8 [  c  E. D% {( ?" ~/ f+ Olet j 37 E# l& e, n6 B6 l
let k 4
4 Z3 q+ y% F3 ~2 p" T; fwhile[j < trade-record-one-len]0 u+ Z- F" h  D) x* a+ p  C
[; q* p! ]$ ~+ M
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0 G! j/ u* l7 c! s3 H. g
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)
) u$ I; X$ R& L0 S  K+ R7 i7 u4 Dset j. |! G) R* M( J
( j + 1)

+ @3 r( x9 I# C]
( ]% ?7 R) \/ `# D7 c- }; i* A) _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 B& |+ F: {) z- G- O) ?( ?8 N2 X# l

- D5 @1 U6 w8 Q2 `
. W( |' l% g# z6 K0 q2 m
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
, Y$ w+ b- t2 v; L: h, `;;
及时更新il的评价质量的评价
  y/ |  o8 f9 \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
0 S8 k9 e4 t- }set l (l + 1)' Q8 b: [; I; {. T" U& Z2 r
]/ A; V  Q1 w) {0 r0 d1 Z, A
end
: B8 q8 V  Z* k: x2 E, i; C' U( [. Q6 r' K; E
to update-credibility-list4 x. T5 v: C" W- K+ J$ Y( V( y
let i 0
* {+ J- `* v, u4 hwhile[i < people]; N  P. ]0 f# |0 V- v
[
! ]" h8 E# e) d6 Clet j 0
- ]( Z  b$ Y' [- wlet note 0! ~) _8 k1 j, |2 k0 v
let k 0  N* O# e" x, a8 V& U* o3 h$ ?
;;
计作出过评价的邻居节点的数目. S( Q: V( \4 Z7 s3 {% y+ H5 d! U
while[j < people]$ w0 u+ v8 K/ D. N* p% q; k7 J
[
: r) @6 f8 h1 q- [* qif (item j( [credibility] of turtle (i + 1)) != -1)
" ]3 c5 g7 ~$ P# A5 f2 ^5 ^;;
判断是否给本turtle的评价质量做出过评价的节点/ C$ h  t- w8 B
[set note (note + item j ([credibility]of turtle (i + 1)))) D0 g3 R' x7 Q7 H
;;*(exp (-(people - 2)))/(people - 2))]

/ d* V0 W5 [+ v# L" C; Qset k (k + 1)
8 @* q$ D, f- C2 E5 L) B# {]
4 u7 S0 Y* j/ M/ T# I6 w; }" qset j (j + 1)
* S( v8 Y; X2 J. w]
; r/ W1 U+ y- Z5 W* h& }set note (note *(exp (- (1 / k)))/ k)
1 T. H3 R" s6 N# Sset credibility-list (replace-item i credibility-list note)
" n( i7 \: g% f; w9 jset i (i + 1)! p5 j$ g  G0 O( y) z! m% u( \
]
2 ?: z5 @9 D1 g# vend
$ V% z" j1 h, s" v& d0 C! k1 ^" g: ^
to update-global-reputation-list5 K0 U' \, a9 O; o$ ~. w
let j 05 G' f9 l" {, M1 Y- T8 v
while[j < people]
# }, M1 ^) t( I: x[: ~+ L- e- b7 `$ ~; l7 k1 v
let new 0' R0 {! s; ^! l7 ~! |
;;
暂存新的一个全局声誉; |0 o7 }4 ]! _2 o
let i 0
. m* n& K" \4 \3 P' @7 Nlet sum-money 08 K) c3 E7 u# c+ ?# l3 b5 p: x
let credibility-money 0
5 N3 w9 S$ H, K7 F4 j$ owhile [i < people]& h+ ^4 g& u1 y& j
[' O) l% W9 g1 K' |' H  X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 D& T4 n) o( ^5 @1 d
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
1 _8 `* v' N; yset i (i + 1)) z( X, o8 ~4 F; n7 Q, i
]
. m6 j: m+ m6 c2 _6 W, E1 y; D% rlet k 0
) i4 L+ ]5 c5 w2 K  w, _let new1 0
" \3 m9 D0 J& J; t/ r0 U+ ]while [k < people]
; }0 [! N7 w6 E* g4 W( x+ x[8 |# X8 f& s+ ?3 N* z0 P" N
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), |) R2 h0 E% P% r. }- z8 m: {* C
set k (k + 1)
* F. j7 ]: R8 u( h% A1 @9 t3 ]]9 }& i: w; v# o% b# r2 X) P
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ! r# {8 a' e8 e) ?( \
set global-reputation-list (replace-item j global-reputation-list new)9 X: U0 U& g3 l6 a$ b
set j (j + 1)
* v3 C+ X4 f& n5 M: x7 }]
8 O* E0 e7 ]3 {( T3 Qend& W1 R1 H6 @  b% d4 P- y

4 G  J: Y" B; S1 f$ J% C0 \8 M8 Y6 w- R4 U/ Q
2 e9 ]4 s. X4 V% Z
to get-color, c: C) }, t. W5 m$ t

0 x& f4 u6 V/ l$ `1 Bset color blue
) A/ J* |8 ?- ?% t7 [5 }8 K
end8 n1 k3 o/ g5 [0 z' \
% i7 D) S1 I8 g7 A7 t
to poll-class
  P* u* r5 t0 z; a& W* u% D& Wend) X9 w- [( R1 h( s6 v% {
3 q  r) m9 B9 |$ ]6 F
to setup-plot15 T3 l$ P2 Y5 {# |! @6 ~" n! J

% r. h; p3 p0 L- H" W( Fset-current-plot "Trends-of-Local-reputation"
3 ?+ [6 @+ J! p$ U% W" \) s
9 i4 D4 W3 M& b: w. `, G1 d
set-plot-x-range 0 xmax
7 `/ `, R* i, c, P# N
" U3 Z# R4 C- N- m3 c4 o/ V
set-plot-y-range 0.0 ymax

) l; n; q; C9 e6 T: C& vend, q  A1 k  W, [( W
- I( C! y# m0 \% P3 r
to setup-plot2
" A' ^0 R7 l) n  ~( m* }3 o8 R; t7 _& @' v
set-current-plot "Trends-of-global-reputation"
' z& v" m8 v6 h" L

- i3 r- R. v  I. j/ t2 }# p9 W' S4 Rset-plot-x-range 0 xmax

1 Z/ g4 l  H$ J0 J- G$ \  b  K! [& c" L
set-plot-y-range 0.0 ymax
# ^& T* n3 H# ?# o9 P' Y' y
end( e) G7 U0 V7 E9 s2 W+ r6 K/ C! |

2 Q5 I: M% _/ k. @3 h2 i- s! ito setup-plot3! h' J% c' ]1 i/ t! y- }# Q# k

& d) [9 b# d4 _4 Z! |' e1 ]set-current-plot "Trends-of-credibility"

: ]0 j' F  ^! `1 c
8 g3 z* {2 N2 U! y7 S" sset-plot-x-range 0 xmax
8 Y* t3 @. h' a( @
5 ]' \1 R. ^5 ~6 u) F9 Q
set-plot-y-range 0.0 ymax

: U& m1 E8 k% t3 M: _end
" p$ ?& J% q- P% @
6 a4 S% R0 C* i6 \" _2 c- zto do-plots
2 J. \- {- [, Y" uset-current-plot "Trends-of-Local-reputation": f# [* R7 v" M/ S2 E
set-current-plot-pen "Honest service"  |8 d8 z$ A. B. U; j1 W: {5 t2 f( t
end
. O2 x- `4 w/ x4 ^7 c% y! p3 I9 d! D
" z' N1 x% M+ T2 Z. X0 U4 G: ?% ?& E: t( 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.
; F# T0 _1 T9 i! T# _3 s3 M& D; O8 J% P! @2 Q
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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