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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:
+ {+ D9 ?5 b! s0 R8 [! Kto do-business
7 ?: E) |4 V: y7 B& _* Q rt random 360, M6 U/ ]9 ?( `, Y6 F  c
fd 18 l4 G* o" i6 E: Z( v6 U0 p! g
ifelse(other turtles-here != nobody)[0 S$ ^9 S! A2 y' X2 z
   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.. T: H$ J# S0 c# o; Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  H6 y" s  s! V7 O: l; V. N; I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer& K7 M4 u( o, J6 T
   set [trade-record-one-len] of self length [trade-record-one] of self
' z8 {2 U9 X: K0 E- ]4 E( @   set trade-record-current( list (timer) (random money-upper-limit))
# m8 Z, u- R- E3 w; b9 @2 ?/ M1 _5 e9 X( v
问题的提示如下:
. I7 W0 Q$ y9 o: h' s) q7 j3 v: A: E' _: k2 n/ a/ ?
error while turtle 50 running OF in procedure DO-BUSINESS0 o: g7 ]  c* g" d  J; w
  called by procedure GO
# v, a5 @1 h' O+ S- P! \" e6 g# gOF expected input to be a turtle agentset or turtle but got NOBODY instead.! Y4 \7 w3 N; W7 v% u  e1 j8 m
(halted running of go): ?' C2 W, I: i0 e& b$ [0 D

- X, g& Y4 ?6 K3 {# A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~~
: a( Z6 {9 K. w: _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2 |! w4 X! m0 A1 K; @; z
globals[: l. M& k4 h" v# @' ^$ R
xmax
7 X* T6 f4 h4 _% i" L8 L8 Oymax) W3 @) V( N: Y" v: r+ `* O
global-reputation-list
/ b, ^7 l9 O: z6 Q1 i/ O' g
9 f, d5 o5 j' @6 X1 H, n. T5 W;;
每一个turtle的全局声誉都存在此LIST2 B* V! w1 e7 W* {3 L5 n
credibility-list
' g" W5 X/ d3 J  L1 U! h+ E;;
每一个turtle的评价可信度+ l& L! k* t. v* u2 u" G* A8 ]
honest-service
- M" f, g) r: k- E- [unhonest-service
/ Q6 @; n) Z8 k, r  w4 ^* Loscillation$ @& n! r! u8 _$ D" R7 @$ z
rand-dynamic
* m& u6 z3 b6 Q' Y]
1 g* \9 Q$ R7 b2 I- b* f( Y9 z
$ L; T; s# G$ }0 @0 i! `/ _' S5 \turtles-own[) H2 ^! \5 v+ ^, i  P4 w/ T
trade-record-all) Y+ Y( u: x& z$ g% m7 u
;;a list of lists,
trade-record-one组成1 a; G& W3 {, M6 p
trade-record-one1 C; t9 y3 N( U: ?4 [! p
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 c* E7 P. e  Q4 S
/ p: P9 A1 Q/ R2 D8 m; k;;[
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]]
" T" E7 Q9 y! J. Vtrade-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]6 ^$ D, ~  ~' v5 x9 {$ w# j
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
! M4 n/ V* t5 x) Y7 ]neighbor-total5 @' r: v: b; T- }. p
;;
记录该turtle的邻居节点的数目2 |% ~* M6 l9 ^
trade-time- J7 v& V7 `' h- b! `" A' N
;;
当前发生交易的turtle的交易时间
! r; R* R1 Y, pappraise-give6 g! ~) ]; K( U- Y2 d. h
;;
当前发生交易时给出的评价
$ t" j1 a2 q) `! d) U0 sappraise-receive
/ P/ z6 R8 @9 Q' \4 E- q0 A7 ^9 I& m;;
当前发生交易时收到的评价
) K$ k7 P1 h5 x2 \. o- aappraise-time; h' ~$ s! Z$ |' L, d) ~- T
;;
当前发生交易时的评价时间
* _. e. t/ |8 J0 f3 Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
3 e+ K1 P: D4 ]- Jtrade-times-total8 T* `1 w! {/ l1 p; f+ v
;;
与当前turtle的交易总次数
+ G! L# c- U2 e: @) ctrade-money-total
& \/ O+ q2 @" l) p. w2 W;;
与当前turtle的交易总金额/ n1 @( B! u" ~) @/ [
local-reputation
5 c9 `1 M# d1 _# A6 ~global-reputation+ N9 ~3 R2 {$ f
credibility
5 H$ G3 h' U# W0 S8 q; m;;
评价可信度,每次交易后都需要更新+ k: h9 K7 b: b$ R0 M2 Y% i0 ^7 b
credibility-all$ w' C, o  d5 Q- Z' ]" A/ ]2 a
;;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
+ h( l: U5 X! o/ M
: r1 u$ n7 h+ l! `4 b5 X0 X2 K;;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0.50 V" r% Q1 T5 G# j
credibility-one
+ ?& n0 V) n1 T0 {+ c) h' v* _7 Q;;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* r1 D+ E" W4 H4 j, ?# Y
global-proportion
7 v/ F6 B! ]( s& z. L( wcustomer  u: q) H$ v8 i( l4 K
customer-no% v. L$ }2 }( w2 Q2 s2 B
trust-ok
7 T: R" u% O. W8 p. j  B' c: ]' Ttrade-record-one-len;;trade-record-one的长度4 F/ E! J) ~& r) p6 D
]; @$ h' R! R2 E- D
1 z' _# }. A1 v4 V- e( r
;;setup procedure8 w, V4 ]4 W' t% @0 x5 `: i
2 `1 ^" o) D) k' l& c! X
to setup
" Z. U( j* {0 m  I# `; N8 \/ V8 x2 _$ T! h+ W) y' Z  W! U1 R
ca
$ W: U5 u! f. v0 A; f
+ K1 y. N5 `8 c3 i( a* X: L+ `0 j
initialize-settings
. D0 h) M& Z/ W9 [6 x& k

$ }2 V$ d) Z+ `, A" W, p' l, z% ccrt people [setup-turtles]
9 l/ Y+ c5 [+ H. m9 w3 U* P8 n
, C1 B0 w! @  ]2 K# C' @  ~8 c3 v. a
reset-timer

# b8 E1 w) s9 B5 o+ g. |, ~: {
0 H! F8 H+ N. g' u. Rpoll-class
  B) I0 g5 w% |, L( ^! f

8 Z# T" r3 V$ e1 Ksetup-plots
2 A! H& f  Y& _3 [0 S
5 N; D( h$ U; l2 v. Y
do-plots

, ?' R$ a  o$ A  M  x$ f% w! x& {end
. K$ M: z' k& D
! S5 t( k: z/ f7 w! X) bto initialize-settings
) a$ z' i) ?, {6 d9 C4 J
7 q% D" i4 C: P# \# tset global-reputation-list []

: ?4 s) f0 r1 T& H9 y- c9 j9 b# Q
2 N9 T0 z& G! b; _6 Gset credibility-list n-values people [0.5]
2 J8 ^# r) I2 _) F$ W6 l3 ]- ^

2 R1 V8 [6 `, j; B5 cset honest-service 0
) r: w5 c5 i2 y: d

, K% |! A$ I- B1 b: K% Vset unhonest-service 0

0 n# @7 p) o* p  ^
9 m" S# N' i1 d" {: i2 N& @set oscillation 0

: i! d) ~* r& B4 K1 l' y
; F! g# b) i4 D' t4 ~4 nset rand-dynamic 0

6 L, t( v7 o9 u  T, i7 Zend- [3 F" Q4 p, L  ~1 j  H
# o4 K, }7 E" v% x
to setup-turtles 6 b7 N! m9 X$ W8 n; Q" \
set shape "person"
& m  I! z* _- i* x8 W+ n& zsetxy random-xcor random-ycor
# S, j$ f% s' g2 \: Iset trade-record-one []! r7 d3 h) A* Y7 h7 n
3 B$ o# I3 J' F' q5 B* ?8 J& Z) ]
set trade-record-all n-values people [(list (? + 1) 0 0)]
. c  Q1 f* s3 T9 s/ Y

: i7 G' J4 o6 [% g/ u6 kset trade-record-current []
; j' V* q' Z3 }2 P4 J) t4 |. [set credibility-receive []0 x; O/ W1 O8 b% C; S
set local-reputation 0.5
7 f) f# J! b% m$ `4 V3 \: F  Cset neighbor-total 09 l4 a) Y: N; @
set trade-times-total 0
% d* M5 {: ~; u( @; t3 C* l8 zset trade-money-total 0
# V. J: R: H1 F& i- j& yset customer nobody
# G' y1 R7 D7 Z' Z! e9 jset credibility-all n-values people [creat-credibility]/ a" L1 |! ^8 Q! h) J& C, S
set credibility n-values people [-1]
4 f0 e9 K; J5 ?get-color, K1 n' E4 p' N$ h( j
9 O& }# W/ H$ j* ?
end
# {; T  V' o6 K2 N8 m+ c
, x1 M( C6 }2 Uto-report creat-credibility
! \9 M( `4 @# q  n' g7 m9 dreport n-values people [0.5]- X% B* `- Z7 w5 q2 ?% L
end) x, h2 O, s- Z( X6 A6 h* J

' e3 `5 J" Z- y8 Wto setup-plots- _  u; `: B6 T8 I; R( F

0 m- q2 ~( K" }$ u9 S. V4 Aset xmax 30
9 U4 L- d7 [. q: e. I

9 w  a/ l& e/ C; w/ c$ m; Qset ymax 1.0
! D$ t, `0 F6 g/ E! v  c+ Q

, V! Z% N8 M' O' |, Gclear-all-plots
8 I; P  D+ ^/ K% F& q

4 s. q0 ~1 V  T, Psetup-plot1

/ |  N; \; ~$ E/ r- B- f* k0 ^/ r  I$ x3 l2 I8 J
setup-plot2

( Y, ]& X- f/ ]; d  D* f9 V0 H% P( r, X! {7 |' Z1 v$ o# ?
setup-plot3
2 P; l- |7 o( K, E& ]
end. q' X. R0 ^& e- I( d
5 I; g" J% A4 Z& v/ ~0 e8 c$ D: z
;;run time procedures# V( F5 Z% P! d4 R

) n+ v) b1 V  p' K3 lto go
% d& m6 [: g! ^9 H
1 G  R# A# x# }9 N2 v+ oask turtles [do-business]
: ?  Z( w2 i/ Y6 I' {0 X
end" I9 ?% u7 m' l7 P9 Y8 b7 [
0 s) j+ H5 y% u) m
to do-business
8 x- H- {' e" z. N
& E" b  x& g7 n: t( I4 d4 }

2 g/ z; \/ |4 y. j" Zrt random 360

2 B. Z5 G3 o8 Z! h$ M* w& N6 E+ p2 \! F+ C' @2 T% j
fd 1

4 N3 C9 q7 Y  W3 K2 [  Z0 j$ e
  m  O: l  j' {2 t/ O/ f6 Nifelse(other turtles-here != nobody)[
$ d: a0 u1 _" ]* z9 b/ O, p

" q& d2 |" z9 q( n" s4 b9 qset customer one-of other turtles-here
6 Z) P% a; u8 T' W+ p
* a" g+ |( m. c! O4 h! g
;; set [customer] of customer myself
' Q+ d( I9 I# @! @2 \9 p. R2 i. j

7 }/ Z( q3 N, p5 u9 o4 wset [trade-record-one] of self item (([who] of customer) - 1)
+ G# T7 \4 ^, ^) Z2 }$ m[trade-record-all]of self# M' m! }1 H- O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
) M; O7 e6 u1 s* a+ Z- |( H
5 T/ t0 a4 ?5 v
set [trade-record-one] of customer item (([who] of self) - 1): |! a! F4 F% z4 Q* y
[trade-record-all]of customer

- G# p+ \6 h# B1 |. |+ e& z- _7 H! C
% g; d( u6 I8 r# M) |; R! b! m) [set [trade-record-one-len] of self length [trade-record-one] of self

0 ^# X) ~8 c( M$ f, e$ H9 O9 K4 r2 F0 b' b* A% v& x" m
set trade-record-current( list (timer) (random money-upper-limit))

7 d- ~9 M; ~& n$ H8 P0 Z
* b9 ]6 U. u6 e) d' u) C" e5 Iask self [do-trust]) b( X" I& M& F8 d# g9 U
;;
先求ij的信任度
, E7 q7 r& @" R: u  I. N5 \2 {7 ^8 w0 x/ d6 u$ `
if ([trust-ok] of self)
' C6 ?- R, S' D& K;;
根据ij的信任度来决定是否与j进行交易[2 c% w5 L6 Q8 x6 a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  M# D) ?, p. M* Q) D6 n# h
6 J9 ~% S; ^' M3 u9 r6 k  |# I; `
[

8 ]% V( s; Y  o* e) z" E  B1 B2 b1 O; S! K3 m
do-trade
6 z. }. L. G; v1 V/ u

- B8 b, Q8 W+ F% c2 ^+ k0 o) Vupdate-credibility-ijl
2 b/ w  B4 ~( Z

3 w6 H2 w. R; G! Q- M% lupdate-credibility-list
: s" b5 r: P( n  U
2 l2 O, H, s; H6 R6 V

& A! k, P3 W5 X6 E1 ]update-global-reputation-list
4 |% ^5 v6 n( ?6 t
) C( k% D% @7 ]: U0 X
poll-class

6 W3 n6 \3 u; C: w. D2 l8 W  D# e6 v5 j& I8 Z9 Q, D0 i
get-color
: A) e8 N- N) }+ O8 [/ }8 u

. R, b+ a0 `: U2 X$ g1 K7 b# j+ N]]
! ]  v9 A/ i; {% T8 I# [8 a' o& d2 y& o. K/ [- `& Q4 x* T& E
;;
如果所得的信任度满足条件,则进行交易
) n  e* T8 N2 b: p6 A  p1 h7 _
. k! b2 l) `) h8 q" I, Q1 M1 B[
0 H$ n# t+ B) o( A) F. H  {

8 t7 u& V8 G" N- R# B  `rt random 360
8 I8 h  ]( W: v# s3 J8 y
4 d5 G6 f& v- N! c# [# c
fd 1

$ [6 r  h: n7 O! s. w, k, x' \2 M) Z/ v( I1 U
]

8 N5 @$ C6 h/ J6 H7 d9 k6 h+ x
  P& e5 }/ X8 ^# S  uend
9 C% R% x+ N1 x1 `6 x
! S' c+ F5 S6 H0 c
to do-trust 1 s8 D5 P! a" Y* S  ^3 p+ A
set trust-ok False
/ x! o# E) B3 C
0 v! ]% x' u# q3 C/ v( @9 n

8 Q- }( l7 O) b, ]let max-trade-times 07 c0 s( K7 ~3 j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; w! J8 K2 Y+ q& R6 H9 O  t  C; alet max-trade-money 0" T# |3 W2 `9 H/ F3 C
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, g: T. {! [3 u# k1 ?- M( Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- q! a8 w; E! C  K( m8 |, _; ?' L

" a  V. |# v' o. h

1 q( U2 o& j. [% fget-global-proportion
9 E, y+ C: Z5 `( @  G- x2 Glet trust-value7 W2 w2 u  I/ T; p
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)

% i& F: \6 T7 t3 k; Sif(trust-value > trade-trust-value)# {( w+ n4 \. f1 ^3 q" I$ }
[set trust-ok true]
, m" c  n7 r) s. }) x0 c+ rend% V7 @8 r) b# |2 s' X3 U- U
9 |& c3 Z3 }. j# i3 `5 O6 w5 c
to get-global-proportion
# n9 Y7 t! B( W' m3 fifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% p9 H( _' z: f
[set global-proportion 0]3 T! Y" R5 X& G
[let i 0
/ t/ d4 h0 Q" P6 t' ilet sum-money 0
% c8 r0 b1 z/ P6 I  q* u, U7 ]( ~1 Rwhile[ i < people]
9 \7 R# U5 J$ v[$ K! m# }  y0 z! K
if( length (item i
* x! a5 X, {6 A# e! V[trade-record-all] of customer) > 3 )
- D& v' O) ~- T1 e, a
[
  d: K+ @, ^/ O/ F' {  p" G4 @set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' R  h; ?9 m3 D
]% K5 j2 U9 v% K/ A$ d6 u
]4 }& ^5 c+ x- t* M$ M# F
let j 0
) V6 [. J& J6 A9 _let note 0
  ?4 L: `* }6 s$ H% mwhile[ j < people]
7 R# y( |/ T1 U[
$ l7 q- E2 E1 S. o/ Dif( length (item i9 W9 t0 B/ a4 e; e; A4 ]2 T1 R
[trade-record-all] of customer) > 3 )

2 g9 G2 v6 n# Z/ Q. \6 L[7 Y* ?% @0 k/ A3 e
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 N' e' y1 R9 _+ y3 ~& [
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
9 _1 d# t# X6 l+ o7 H3 @[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( n' h3 [9 r3 X3 }]
/ k9 g' S; o# ]4 o% ~- C]
% m3 @/ U: c$ }; J; ?; iset global-proportion note
. k0 H8 K* E# `  Y4 @]( }! r" s7 u) H0 O% n- z0 U# M
end
+ R/ P% g  R& c3 O8 [# B$ T* S5 X5 ]
to do-trade: e- q3 p8 }, d+ m
;;
这个过程实际上是给双方作出评价的过程
2 _) T# @) p2 Z2 ?set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 ~- i3 ~8 A. ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* V: o7 ?0 V/ I! S; O1 @* [# ~/ ^  Qset trade-record-current lput(timer) trade-record-current
/ V3 o" ]9 O) @' i. p7 p;;
评价时间3 i2 T9 A- |" T
ask myself [! E8 [( n( ]( G# Q  w
update-local-reputation' M, E, R1 T  H% S. t# D4 P" c
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 K5 d7 [) m) k]
6 T% e  @- l0 K. Y6 \4 Cset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself' C7 ]* p6 P" p2 r0 M4 ]+ H3 O
;;
将此次交易的记录加入到trade-record-one
) K6 q! S5 O( @+ Y- Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); q* S7 s$ O  ]7 S( r" ?$ B: M" ^
let note (item 2 trade-record-current )
- A7 ~: E$ L0 Q" D2 Z# bset trade-record-current
, v) C6 l6 [) E/ Z8 Z6 o(replace-item 2 trade-record-current (item 3 trade-record-current))

0 {% v4 N2 @1 X1 A2 E5 `: s; wset trade-record-current
9 @: t( E. G/ z9 U6 Q(replace-item 3 trade-record-current note)
- s* g3 b7 \: A+ o& B2 S  C& K3 c. p7 \. }  i/ h
$ g" u* ^- t7 V
ask customer [
7 X& |3 m# }5 i8 N  bupdate-local-reputation
" B$ C$ q/ \8 L' {$ W/ zset trade-record-current
7 g; u" N9 I6 R& `* r  K! s  u(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. a* t' E& _- Q9 a2 z
]& _; I  b0 E& a$ V' I9 b' s

8 i5 v5 y' x& `! ]
; |/ W: f2 D8 M7 ?' G# f' {7 l  ?
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ k# J5 b+ F- j+ F
  r; R/ _: `' |7 Y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))4 e9 \) D5 g) W, P
;;
将此次交易的记录加入到customertrade-record-all8 V# S/ w% T5 B% g' S5 s! T3 w  p. [
end
( ?7 h8 F# g$ k7 q
9 j; i+ |( l, h. p$ m0 uto update-local-reputation  p9 D* U8 e! m% _. Q
set [trade-record-one-len] of myself length [trade-record-one] of myself# l# y9 R4 H! p% J  `
! Z5 O7 K$ o+ A" I

7 |7 M, S7 x# b5 Q0 Z! c6 r;;if [trade-record-one-len] of myself > 3

+ H: Q7 r5 H- s( {0 g' }+ M; A$ [update-neighbor-total8 _* N/ d/ P5 t4 A: U0 x8 L, l8 B
;;
更新邻居节点的数目,在此进行
; F! \$ E- a+ u! blet i 3" q# w# n# s2 ]: P
let sum-time 0
# |( g* Z5 Q$ i' a+ S5 ~while[i < [trade-record-one-len] of myself]+ y6 q, O  ?, |% r! L' k
[
( U( y$ M) @8 n/ R- zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  C$ Z- i1 T- M) |* u3 V+ Jset i  S& f% {' b8 M$ P
( i + 1)

" X. ~2 e: e+ B) a]
: [* V+ ?5 W) J3 Z9 hlet j 3
, Z7 k: b$ F9 [( d2 ilet sum-money 0
  r) N# \! x) u9 y+ f; L' r6 Rwhile[j < [trade-record-one-len] of myself]1 d5 T$ L4 A  j! I* c9 c2 e
[! N* ]  m% ]& b( y9 J, 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)6 u( ^. |+ \. U& [
set j+ y3 ?7 w4 V1 b' C3 S& X0 t
( j + 1)

( r6 W5 R  l1 B) _! w! T]
! ?" f; `! d, clet k 3
/ C) q1 D2 n: L+ a' w, @' H2 flet power 0
  H$ l% n& J: S9 `) Mlet local 0
3 q- X& U$ k' {* Bwhile [k <[trade-record-one-len] of myself]
, _1 c& t2 }" T/ o5 j) I2 ^' h[
; H- u9 Q1 v6 h  Uset 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) $ _. U8 Z2 n# X* ^6 z" x
set k (k + 1)1 e2 M4 F8 B. ~% Q! n  ?
]$ A% b  g! h  Z: x  P1 c' k
set [local-reputation] of myself (local)
  g' w. l+ ?) X5 u$ a; ?# ?$ d: Iend
' U! n5 i+ ]+ u4 [* \0 _7 J; Q  z+ `, J$ h  Z0 |; K
to update-neighbor-total% }4 {) D% c4 [2 n" Y( X; Y: o
1 M& A# }  g  l3 Q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" r$ l3 `0 U3 ^( E
- s3 Y4 M1 {, Z' r8 _# e" H
9 R4 p# }% e0 W+ N& x5 C! r) \
end
; R6 X/ A- Q1 A+ |* c+ ?0 T5 f; d7 {* s! j- F% V' w
to update-credibility-ijl - k( O2 K" a9 r
( I3 n; H* t$ r# v3 |7 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。' ]" ]2 @* T7 G* ~; X0 w5 X
let l 0
$ n2 Q- Y4 z  z6 A& `- v8 Jwhile[ l < people ], I5 w! l( r$ z5 q2 z0 {+ B
;;
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
, V: V8 O- v0 x5 j' S4 R6 B, H  U[
/ n- _  S7 U4 P+ b1 Llet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 D) v9 H" o+ P! i0 Uif (trade-record-one-j-l-len > 3)
- }# Q, c; Q5 F- Z9 Q; Q7 C[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
3 `5 i; o; b* F2 j  v8 Qlet i 3
0 W. ~& u$ B! s; O) L4 p4 G7 I/ j6 Mlet sum-time 0
2 T( C& t# R8 s" M2 fwhile[i < trade-record-one-len]
; k: U$ e1 u4 v1 }1 \* W[
4 d  |, C3 `' Z' ^' O2 r9 e) G& T/ `3 Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& h. @0 \$ M# S6 p& e, l$ a, x# b
set i
& T1 I8 e. k" R: u( i + 1)
# A, y; @) T" k% W% u3 J
]6 `' X8 w1 P$ b+ l2 D( C" e
let credibility-i-j-l 0# ~: Q2 b/ X% S7 ?- `
;;i
评价(jjl的评价)" F" k+ \6 G+ ?9 l* S. N  u
let j 3( R* d8 }) s$ j& C
let k 4/ z, }6 M( d, c8 P$ h
while[j < trade-record-one-len]
$ o' D6 b$ j2 Q9 D' b/ C5 x[
$ z; C8 v9 q- a  Z2 [$ hwhile [((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: D& {" D6 v0 P/ W, Y% n
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)
* |0 m, v5 D8 @  |! y( L# b( ^set j" w- o7 U2 f& |- r$ B' S
( j + 1)

( K8 V1 f; `, i9 L7 v- d]  ], D9 F$ a3 S5 t
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 ))
+ Z8 P& W7 ~' z/ k0 S( `' Y) d" Z, Q1 o  `# e$ @

0 C) r1 Z; x/ B/ L% D, Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
! n1 H! }2 N( e7 k7 X" m;;
及时更新il的评价质量的评价& Q9 k5 b( \4 K' }
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]9 r& H# D0 w7 P  v
set l (l + 1)
, ]% ]9 U) s9 p  z) J4 B6 n/ e; m]
: z+ t# h4 A& C' K# ~. L2 Send
3 ?. t1 a3 O7 e0 ?) b/ X/ k" q5 \$ I5 g7 ]  N8 k' }/ s4 S- t
to update-credibility-list) Y" E; e2 F/ _9 N! A6 P7 B3 X0 ^
let i 0
6 }3 J0 H/ {' E# R! B) ?5 Dwhile[i < people]& v+ G5 o' Y8 G9 i
[
/ l4 J. v3 C1 F4 a; e0 Alet j 0
& v% \9 Q6 r5 M  i( T/ [let note 0
1 \* ]# N( r0 T" R% j! @7 Slet k 08 M& t2 N$ v7 M6 ~+ \
;;
计作出过评价的邻居节点的数目
2 n* y6 Z+ Y! s, }while[j < people]
# g! b3 ?* X* ^7 `& w$ V[
1 ^( {! ]) W% s. [if (item j( [credibility] of turtle (i + 1)) != -1)2 y$ T& w- Q2 f- f9 N/ k7 U3 ?
;;
判断是否给本turtle的评价质量做出过评价的节点( \9 ]6 N& `" a9 S0 ~, Q
[set note (note + item j ([credibility]of turtle (i + 1)))
( m& ?2 t# H5 {2 R' U+ T;;*(exp (-(people - 2)))/(people - 2))]

9 c# }5 ?4 ]1 T& ]set k (k + 1)
% c; g1 @, ~, j3 q]
7 P' j6 m$ R5 W: \5 ~" \" Fset j (j + 1), a& t3 Z+ ~# C& r
], |+ [6 s; X7 \- G
set note (note *(exp (- (1 / k)))/ k); E8 }8 E$ y) r. E: C) |
set credibility-list (replace-item i credibility-list note)
+ D& P8 b3 [1 d- hset i (i + 1)( y6 ?. ~# v! g# d; P' T: r" z" Q
]
, q" Z/ {) c: _: U: e5 Dend
3 B- L# Y1 W$ c7 U5 P' |' _) N7 ?6 c: y% J( Q0 e
to update-global-reputation-list
  o2 Y& p- Y) i. J) R2 elet j 0
* n# C( ~) K0 q- C6 p% g( y# Swhile[j < people]
. r/ p# v$ |$ O0 j" i[
' g2 q! w2 y  S' Rlet new 0
2 @) x( }* v3 @5 v! P" T5 {7 X;;
暂存新的一个全局声誉
+ T9 b/ w' z9 j7 J# v. r! Xlet i 0( ?+ C  B( w$ h
let sum-money 0
' y) Y: k6 B8 Glet credibility-money 0
- w) \9 Z+ e' E! Y7 I( pwhile [i < people]
9 p: ~: p  V4 v3 }' r[, x$ R* o% Z5 X- D+ u
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
5 v/ G+ L; r$ K9 \" wset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" `( S4 C+ f: H% z6 o) S( \set i (i + 1)
& O6 g! _1 b6 v/ k% ?/ W8 l]
* N/ N  y. X( c. B4 i+ x, h" {% Clet k 0' ]- `. `: [$ }, z' e5 H/ {! t
let new1 0
, E- h$ @5 T& j( A5 {while [k < people]
2 N- G  H* b1 R[
! I" Q8 j# G, M) {( l: p& j7 n$ Rset 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 m- B" v, @% m9 k
set k (k + 1)5 X: \3 B& R, V7 C3 B
]4 |" f( v1 a* w7 C! ~
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: |2 F% g3 @$ Q1 Qset global-reputation-list (replace-item j global-reputation-list new)9 t' H" D3 C* Q1 b8 ^0 J
set j (j + 1)+ u2 A0 s" N: {
]$ y8 u2 L7 X) ~: D  r9 N
end2 q# |2 E. Q2 u9 h, \
1 Z9 _0 d; [5 k! @: J) {
7 _) r! e7 W2 f7 B8 L+ ^

" g, f9 F9 d1 M% t2 \! r; |to get-color
( @' Q$ f. v: v8 {& j2 ~, x+ T: v3 \4 G- [3 Y
set color blue

4 }4 ~. J. K( Y, Send4 N. \$ E0 E+ o+ l' L

1 B* b" e. Y2 I) i& mto poll-class
9 M9 Y" U# i, G6 Dend0 \. z! b2 p. C1 n
* `8 z3 r& o: u  B) P8 F) O& v
to setup-plot10 p. }8 g  l% Z& A
9 _5 T+ U3 R  H/ y" a5 k  K8 F
set-current-plot "Trends-of-Local-reputation"

; c4 f! F' j8 q
" c6 r0 k& Y; u7 {  Y# M' Nset-plot-x-range 0 xmax

8 h' _7 D. x/ L& R5 U& a
, f+ X! v) W" Y1 q+ x0 cset-plot-y-range 0.0 ymax
! f# @/ B# f5 s2 @5 ?
end" C# T, P; q3 D1 L) ]

! C) l4 D: O' R  h# Ito setup-plot2
* t" c5 v/ s* u2 |7 H: z
* R$ I1 T, _8 w% X  Gset-current-plot "Trends-of-global-reputation"
% A; y. j4 j% z: n5 G) P
; c7 C) h+ {0 V+ `# X% D; W
set-plot-x-range 0 xmax

9 }$ z8 q3 \3 k4 g. C* l. R# A  P) ^- z1 a. ~; V$ \% X
set-plot-y-range 0.0 ymax

; V' G) m: D% l8 m! e8 }end
. }" J$ q1 J" V4 \+ S: P$ F4 F
' q8 d6 C; O& {4 `$ y* B0 ?4 Q2 kto setup-plot3
- x% P* d2 P, C" o- O
5 _1 @( A4 m: `set-current-plot "Trends-of-credibility"
7 M# x& P, I  l3 O( L

( z' l$ k- n7 F" i/ f- P+ v- xset-plot-x-range 0 xmax
$ `2 T2 [' r6 H$ b

' e, l$ O+ H9 Vset-plot-y-range 0.0 ymax

+ J8 S$ I- Z$ j4 U' C& Iend
* o2 j' N( D& [0 N+ G
" V: }) h- X1 v; cto do-plots. W4 v1 \; s) D7 d4 ]' B
set-current-plot "Trends-of-Local-reputation"( G9 q- ^! b0 \& ^% [/ G
set-current-plot-pen "Honest service"$ `7 U' d9 q0 D, Q, u' y
end
, k" r* K" }- I  x: c
8 u% ]1 G6 r& y# H[ 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.1 }6 Q2 X! d% R

4 G/ V3 h5 \6 S! g! C1 G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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