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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:$ b9 a# j/ p$ N: U8 [% {
to do-business
' F3 a3 c9 s5 _. d rt random 360/ i& u/ _4 L0 s' m" C! T, T/ \5 Q
fd 1
$ i6 ]# G4 }, w: A, h5 I0 m ifelse(other turtles-here != nobody)[
1 X* h  L, k: V7 p) p! C   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.  U& K# F7 J  d2 {' X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
2 @6 i+ }( N+ ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% R! x  d, e! p1 C% B   set [trade-record-one-len] of self length [trade-record-one] of self/ l8 Q& N( g2 X# d  R2 e, k; X
   set trade-record-current( list (timer) (random money-upper-limit))8 @& ~( D4 N" p3 z
( {' h7 N$ ^# s0 g) l
问题的提示如下:
- u0 X, Y" h/ N6 j/ p1 r$ r
" o0 @! k+ J0 s# e2 ~) Cerror while turtle 50 running OF in procedure DO-BUSINESS
# ]3 X$ V! v& @# _- _: x1 r  called by procedure GO- j* U* j2 x) l3 h2 z. _2 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! F- o* c( n' l! P( [9 d
(halted running of go); I/ v7 z% ^  z( o/ Q

2 n4 t0 Q, _; {1 x3 W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~~: Y6 F; K/ w! y) o" s
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, z# H" A, z, h+ H2 u
globals[9 P3 ^* M2 g6 x; U1 X
xmax/ k4 r+ m8 ~  y: J9 |* p3 b5 j! j% L( g
ymax: b  m9 N% T: ]  F
global-reputation-list4 i, Y2 Y: g% P- v
. r- t- o4 B# G4 ^  `8 r( t9 F
;;
每一个turtle的全局声誉都存在此LIST
7 H3 C# v6 u1 Acredibility-list2 d5 \, b$ n& y" }' O" ^% s
;;
每一个turtle的评价可信度
! W- b0 e+ T3 fhonest-service$ m. O% ]& T- m+ Z( o
unhonest-service* X; t' V/ _5 x* r
oscillation7 ]; `# e$ s/ G8 ?2 u$ n
rand-dynamic8 @' I8 G- ~: k7 F* c7 T
]
* o* L" e) _6 Q6 d! N, f8 D
" v- X& z2 E, o1 ^2 E" U; ~: rturtles-own[6 A6 q  m" }2 g6 |1 u9 a
trade-record-all4 [6 a* ^, F5 r: |$ k
;;a list of lists,
trade-record-one组成5 G9 M4 y" o. N+ g* L- B) e
trade-record-one5 H9 V, p, P9 u) d! V% `3 H7 J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  \1 |& P+ T# O# V

* k$ b1 y9 J5 {' A# g. x;;[
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]]' {. b+ m9 X/ ]8 f1 Y! c
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], k( `8 j/ G* M6 N0 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
9 e5 U) y$ K& U$ w, O8 ^neighbor-total
+ A7 Q, s8 s" p. v7 a) c) e/ z7 K7 P;;
记录该turtle的邻居节点的数目
% r$ M9 W  d# s5 H/ @8 o& btrade-time# c" y% D7 k: t, k7 B- ]
;;
当前发生交易的turtle的交易时间
. u; x! y+ S8 ?  @. E* Yappraise-give. D0 r: i* y+ B6 S
;;
当前发生交易时给出的评价" J7 h0 Z1 K. ?) a+ i- W
appraise-receive
9 R5 }6 L9 T' H! j8 F1 m/ i;;
当前发生交易时收到的评价) d8 o3 e) K$ p# S- [
appraise-time. l, `( _4 S9 x/ b
;;
当前发生交易时的评价时间! m# N. U. a+ Y7 U" s2 v: l
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
( }6 C- z! E- n) I6 f9 {7 Etrade-times-total$ K& u  M9 m' G5 P9 q: I+ Y: D
;;
与当前turtle的交易总次数
9 ^' l* Z7 W' x! Mtrade-money-total
2 I7 T+ X. x. [# @;;
与当前turtle的交易总金额$ c5 ]2 {# A( a  ^1 o- u8 E6 C& ], J
local-reputation
+ s# Q2 \1 ?' P( pglobal-reputation' f% B; C" X3 ]7 g6 q7 N/ V. h
credibility
6 w0 j2 Y" g4 B( |;;
评价可信度,每次交易后都需要更新
% \, l1 O1 R/ ?; ]0 ~credibility-all4 ]3 Z+ e; d, F* m" u8 A& L
;;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
6 o1 y2 F7 |9 L# m- _; Z) \$ j- U/ f1 C3 t6 e& j
;;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* f* V/ T  d( {+ y
credibility-one% v+ k! N* `( l- i5 [6 F. B
;;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
. ]" R3 h1 t2 m  w3 bglobal-proportion0 u# C% X# u4 o8 y4 K/ G( G
customer* k+ R$ v2 C* R+ E; [6 X- Q
customer-no# a4 O9 j" N, J* p
trust-ok6 d& w# o7 W/ s1 J: U# t5 r
trade-record-one-len;;trade-record-one的长度
6 ~1 z4 b" g5 [5 ~3 b6 M$ C]
/ M& @4 b* v1 n1 W  I0 a! w& b$ M) ^
( V) O* J0 d6 J4 N9 ]1 v6 P;;setup procedure
, R. D& M* p0 u: O) k' U, Q! z- w( Y* h8 r! J
to setup7 @1 k5 u, \8 n! J# \

. E+ B) _$ o" j8 i6 }; [! Eca

7 p/ z) A, D, w* ^# u
& _9 m. G2 @8 ^. xinitialize-settings

8 `1 Y+ b9 }# a( C, H$ r1 w* I0 T0 z$ {- \
crt people [setup-turtles]
# y/ z" x$ {! u
6 P6 F3 A# ^( X+ x/ c# N
reset-timer

5 l# f" ^6 j1 g/ W2 i5 v+ N
% z) r. L/ S! x: |. V  g6 qpoll-class

3 T% P; p/ _/ O# g# {3 ]
8 d6 E/ N+ h- B" ~setup-plots
: K$ y% Q/ w5 h& C& E
, X6 N! W! i! k3 x
do-plots

2 X0 n; b: I  w; Q: u, o; L" ~end
5 Y/ ]. r  K* a3 R
, g2 U2 F- y4 j7 ito initialize-settings
% `1 M& L! a0 U$ z4 G: Y! q$ u# j, e) K! c
set global-reputation-list []

* K  M2 y- }6 _9 T6 T2 D* ~3 l7 O2 ]- k1 ^3 z! R8 i
set credibility-list n-values people [0.5]
' K  A, ^2 _  d, c/ {/ D, M9 i

0 w% F" v9 [& i* l7 Eset honest-service 0
; N2 b% u4 c# N/ Z

1 u) }9 {5 c; e/ m& o1 jset unhonest-service 0

5 y. o& F5 x0 b9 J. ^1 V
- l2 A% o, Z% r. m2 vset oscillation 0
# N7 W# i6 \( |, Z2 x: |
" j* x7 k( r  {5 m' g  [
set rand-dynamic 0

+ Z0 h/ e/ o) k" s0 Gend3 `: e& n. i1 E( Y

7 r. R0 O: Q" x! C; yto setup-turtles : _+ q" H4 H6 q1 _  Y9 x
set shape "person"" g) b& m# [# \% c
setxy random-xcor random-ycor
+ \  x% o" P! e2 e* r8 |% M$ J0 hset trade-record-one []3 H7 Z8 Y, O- f$ O0 h1 g: A$ e

9 |# _$ a% X7 b$ \* fset trade-record-all n-values people [(list (? + 1) 0 0)] & Z6 _6 P5 }# ]! v5 k* J0 P+ C5 I
- d; F0 G6 `- G7 I: o/ |
set trade-record-current []
3 T: O6 J' t5 z3 l' r+ F3 }# n' Rset credibility-receive []: P% q4 z) a6 A
set local-reputation 0.5' z$ f( E" O/ _) `$ J0 i
set neighbor-total 03 L: o0 I0 b7 \, N( r
set trade-times-total 0: k$ ]( }) f8 r% @
set trade-money-total 0
3 |* X- E9 J4 {, Y4 @& Eset customer nobody( k# n5 D# U& f& l: X# Q; n7 ?
set credibility-all n-values people [creat-credibility]
/ u$ L" v7 L6 Eset credibility n-values people [-1]& \4 ]' Z' v5 d) h1 z+ F
get-color
  l8 O; g/ `0 O, l6 w' Z
( c$ g- D9 T9 D8 y
end
7 p' a: E, S2 _& e  s, g  J4 w* L6 I+ m8 Z, d- z  ]$ i: _% ]
to-report creat-credibility
- U7 d8 X! K/ w) wreport n-values people [0.5]1 k: e7 u* Q% U2 x3 G
end( b4 p5 |, L; O5 Q2 k

: z$ }' R3 p% d" Vto setup-plots8 F& w6 Z+ f9 ]+ g2 e) b. q
+ p; v" e# q% `$ R3 R! v* J
set xmax 30
, Z1 ]6 h8 g& p% F
  r- h1 d+ H6 `4 _0 L
set ymax 1.0
& K7 P/ N1 u' g, i) b9 S# k

+ q: k; Q5 o5 t3 e$ v2 xclear-all-plots
" L% T5 e# k4 d9 j; i4 W) U

+ c$ \' f+ W$ rsetup-plot1
8 U4 r& L2 a3 y6 F: N/ \& j
" }0 n5 P- b3 H( U/ R/ r% Y1 ~+ ]' ?
setup-plot2

8 _- Y3 n. z+ f/ _9 g  t: ?
7 t& D* i8 D- Y4 t7 Zsetup-plot3
1 B( \, x9 R, C& e0 C; T3 g+ v
end
: s* @' t5 M, z6 i' p5 I0 O* P
;;run time procedures
, R. j- p3 g' c1 Z5 K2 _
" P! `5 e: ~5 o2 a4 bto go% K5 g6 e% R; W% y

6 ?' b. a& ]' Z/ pask turtles [do-business]
) X2 d1 {. D# F/ O
end
3 l! y( K0 W: u, k! Y" Y  J) T/ u- \  O# w+ G5 }" K: ~) o
to do-business 4 U$ e3 d/ r4 A  }5 P) D6 d

, y* Q% ~+ g6 K; m$ t  \& Z8 [8 W% B$ U9 i6 n0 @+ X
rt random 360
8 a1 a) Z4 C3 Z4 L; i& P0 Y* `

7 k( U# I; r! xfd 1
8 B- L/ H' m4 w$ {

% v  C) v, i  p7 A, Q3 j0 vifelse(other turtles-here != nobody)[

1 M+ p- R9 [* X( _) a4 D- a, Z3 c
# t7 P- D9 X$ Nset customer one-of other turtles-here
# l- N+ p& `( ]5 s0 [* f% i' a2 I

' n9 d4 x, s: b- z* O7 l! Q;; set [customer] of customer myself
* j' r% `- X3 Z7 ]& A

" y8 `* f! J, Mset [trade-record-one] of self item (([who] of customer) - 1)
- D# e2 X" f# ^" O( C7 x, A9 k6 }[trade-record-all]of self
# E7 t* G1 ?0 h0 W2 a;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

# m1 P/ U1 d: S% d+ n
  b0 v) q$ D3 m8 E) g! E1 v3 g* [set [trade-record-one] of customer item (([who] of self) - 1)- o2 ?& [7 f5 S2 `( g6 t2 X
[trade-record-all]of customer

3 y  P' Q3 l! u  g6 H  m0 w: J* R- p% |
set [trade-record-one-len] of self length [trade-record-one] of self

3 V$ P) |; [* @- \; i' u2 |) C+ T) E" H  ?% [" B
set trade-record-current( list (timer) (random money-upper-limit))

' x) R, O+ c) H9 I
, i9 B$ \0 d: F' xask self [do-trust]8 o5 I0 y; g( y0 s
;;
先求ij的信任度& Q% v: y* q9 N( l

$ i# [9 s$ ^2 |if ([trust-ok] of self)7 s+ G9 ]9 G6 I' v3 [* S
;;
根据ij的信任度来决定是否与j进行交易[
8 z, a2 g+ M) t4 nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& m" j9 m% {4 ?% M
, ^; B, t& z: \, m8 p6 w9 f
[
$ z. q# P. z% Q
- j! R  c( [5 O- ^! t1 ^3 l
do-trade

  M% U' A# _* y3 x, A$ h
. r; v1 ~! i# yupdate-credibility-ijl
' k) b0 Q9 T- T* I1 L( z5 O0 |. o

9 [% Y' x9 \4 fupdate-credibility-list
0 R5 t( X9 _6 z4 R9 Q8 F

" ~0 W5 ^+ {/ A& \* P, Z* Q; a
2 U; u% b  V( s2 b* rupdate-global-reputation-list
+ n/ s6 E3 L. P! a

/ b* T) c* P$ w/ Z, n' npoll-class

0 Q% g9 y1 k, g7 K' P, f  P% `
1 A" G5 d) k3 Mget-color

. v+ I. r3 U: r2 Y2 w0 e! e$ |) T: q  [% \
]]/ a0 X5 c' x& o. b, q7 b

2 H, d, q: O8 o% f5 L4 r;;
如果所得的信任度满足条件,则进行交易
  T7 n2 E8 E% h* T: i& q$ V! s/ x$ K5 r5 C
[

3 |* I. x: p, g. N5 ?
* J2 D; J; @( Z0 N8 [. L5 r1 srt random 360
; n. t: B0 a! N/ N, G. x7 j3 w- X

) @7 \% t4 s1 d+ E, A) ]5 [fd 1

% @2 {5 Y& T+ ~
/ b7 x% W0 \2 K# u) s9 \]
& D) C/ G* H3 x6 \

' E% E: s0 Z: j6 ]end

& Q: y; Q. H$ B7 x
4 t! A1 F, z# Uto do-trust & }; v0 E% y) E) B( Q: ~
set trust-ok False5 u! W+ e: \: ^; c

0 ?; U$ y1 W$ S% U
$ [2 D! I! \+ v% d& z. W% R
let max-trade-times 0: U' Q2 `; _2 q0 D5 X: j
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
; m! y% e" W) ?' w$ G, Ylet max-trade-money 01 m2 S2 ]- A' b6 Z& H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  X: }% w3 m4 J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- Y+ y- y. L* l, p  u
" \+ S3 w4 M+ G
+ k: N# l. q6 R+ h9 K
get-global-proportion* X' m1 B7 ?' x2 N
let trust-value2 z7 h( N' D, B* f5 ^
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)
' b; S5 {, W. @2 g) E8 v" m
if(trust-value > trade-trust-value)
  k8 j5 `' s( r4 |- c[set trust-ok true]
( e" J- o" i: O. K+ Hend
0 s9 @+ \+ U: R* y
7 t5 y7 n, M2 R) p- P) f* A4 xto get-global-proportion
% R* F8 B! S* x3 D& w  Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
$ x) o1 _, E0 Y" H' v, S[set global-proportion 0]. R: ]0 c9 ^8 k/ ^5 K
[let i 0+ _3 B/ |. J( n  d( W( }
let sum-money 0
0 A: w( L* z$ {/ Gwhile[ i < people], y* |! X. ^" K* `. f
[& |! q' a) G( r' _
if( length (item i. z0 |# Q4 g( f# v* R+ Y
[trade-record-all] of customer) > 3 )
1 C8 b7 k# P0 k0 [  i# X  a" t
[9 [$ U, J* R* f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)), B2 [& b4 J+ l  R5 J- V( p
]
  W# A$ {6 Z5 `( O3 ^]% m2 j/ c, k% ]  K/ `
let j 0
  r. E# `6 x( K" D* S* klet note 0& l0 ^5 c) D8 K- F- w
while[ j < people]
% `' Z* f: Z  j% W3 y& P5 h[3 H8 y' B) x+ {
if( length (item i
" T5 W' ?9 y6 u7 e7 o! x5 Q* |[trade-record-all] of customer) > 3 )

& ~6 }8 E0 U  v/ I0 K- o0 ][
) ^9 g; y$ u) ^- f, E; v) l1 Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ r. t1 e, X* D% @8 D% A' c% i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]. a/ `, M, L/ j
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 Z1 j9 w9 s( `5 \: C' ]* k
]' j% w9 G2 t8 u9 m9 S5 c
]9 t8 z/ C- J3 z# D) ]' C( S! _: h7 ~
set global-proportion note* \- Q8 B2 G+ H
]
* x. E* a# F9 f1 \+ gend
6 d6 }# u) W: J  c% D! s# _( X
7 k6 R( }0 F, b! nto do-trade! g+ l+ l6 M  J1 J: j. y6 s: Z. [# f9 `
;;
这个过程实际上是给双方作出评价的过程9 n) Z5 S" z/ Y0 Q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# x/ H) _+ D' |) h8 |+ Dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 @) c0 k- U. W3 Z9 _set trade-record-current lput(timer) trade-record-current
, ]7 R; R' f5 l) _. H3 T- ~;;
评价时间
( `& A( [( a4 I1 pask myself [% i; J, A5 E1 V/ q  x5 }
update-local-reputation' D. I& p2 j( O1 q
set trade-record-current lput([local-reputation] of myself) trade-record-current
# M8 I4 Z8 V; _' g0 {  c]
- s6 M4 @. h. q. E% ]; d+ p& \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself* k7 p0 h6 Z* A
;;
将此次交易的记录加入到trade-record-one
7 n2 b, C8 v% N) Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)' u- _& Y6 ^1 a# s( Q) m2 q
let note (item 2 trade-record-current )
. ^# D% i) ?3 C( J% |set trade-record-current
( _3 z% t. t% o* A(replace-item 2 trade-record-current (item 3 trade-record-current))

& L; O! z( Y# g( c# iset trade-record-current& s( @: B# P; R  S& Q
(replace-item 3 trade-record-current note)- T- [0 p5 @$ Z) a- `* z9 H: S

3 R: e7 ]1 u) L( h: Z- s

6 A; F  K7 i7 b1 {8 e" X8 ~ask customer [; v0 n6 L) @* D, e* z8 ?
update-local-reputation
5 `% ^/ z' z$ {' Sset trade-record-current& Y0 D& ~9 h. g2 I8 b
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ K8 d% c2 N: h' V! @
]
+ b  C& g, ]1 d; c
9 y" S# R/ b4 ]8 A. M3 H6 g; |8 l

; v/ P+ [1 T" R, g6 ~- ~$ aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& B5 ?9 L! S/ k& `& T  r

, G. e& ]4 L' z  e  e% F: cset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
& y% V8 U% F7 `* U1 o, X+ ~" I;;
将此次交易的记录加入到customertrade-record-all* n0 h+ ]% g# E8 o, V1 h
end2 J- F2 b- L- Q% g* S
/ R' X5 B" Z) C: w% @& V
to update-local-reputation/ \9 t1 X# v1 `& E" H: u. k  b
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 ?; ^9 B5 a! d. g/ Z+ F% s( [# a% |* y: }# n+ V

* b% H6 }4 b6 u;;if [trade-record-one-len] of myself > 3

( A5 |& j% T$ {3 p7 ]' n; X* @update-neighbor-total/ A2 s1 s4 G5 C" J$ E+ c
;;
更新邻居节点的数目,在此进行
' Z: S7 C3 x; slet i 3
+ N5 q' A/ e- }* l/ ilet sum-time 0
9 ]/ ?! P9 v7 b& m0 t+ ^# ^9 f" gwhile[i < [trade-record-one-len] of myself]
* ?+ R# _, l- S4 M' ?+ {% j  m[# k8 G6 j' L1 t% x
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" v" S; {% Q0 e
set i
/ Y$ a' w$ J& c# S+ V: D/ e: q& Y( i + 1)
8 `6 s6 Y- y) |9 j0 D: z
]5 b) d: E' ^0 i, d# k' M9 ^9 l
let j 3
+ w) y( b: ~5 L1 E; }; z' olet sum-money 07 ~& p+ S1 b: }6 K
while[j < [trade-record-one-len] of myself]
' T2 r: S. i5 m5 B5 p& ][
) S4 Z" W$ J! |+ U/ ~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)! a0 f, x& J8 p
set j  y6 S3 B4 u/ |" p6 |. F8 K
( j + 1)

. \& m! x1 g+ R" V3 ?- L% i' C]
4 l, G( B9 `0 [* ?( @8 P4 t' Glet k 3
( {1 V6 ?. w* A' Y$ [% Rlet power 0
2 e  |# E1 I( q+ k$ h4 ^let local 0' g. i! k1 U9 x. V- d, v
while [k <[trade-record-one-len] of myself]+ ~" A+ }) t0 N  l2 M- @
[4 M+ E. b  u7 M
set local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money) 8 Z& j3 i# k* N: A& Q/ Z8 A
set k (k + 1): r/ q/ E; b( U: }: o
]- }7 U- V/ {2 t! b
set [local-reputation] of myself (local)
" }/ P$ N% n" O7 Q+ H& xend" x1 p% b( N& U& N% P) c
2 p# p  `/ }4 K
to update-neighbor-total
1 q/ |0 Y( Y* s; d/ {( v, r
' L& y8 |/ \' O' Q, s, q) u7 S$ Jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
. ?/ P: k& F8 u/ v3 p1 t1 Q# \- E+ s# e* h# O9 _1 v7 e

* g# g! p4 J0 [8 N( B. q3 mend% y4 [: I! B) a$ M$ \3 l

! h2 Q$ X" s( A! {4 m: S, Pto update-credibility-ijl - i' I$ A( U. `, ?
" O. f4 m9 Y4 [5 N6 Y
;;
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。
% t$ |0 N# H" s! K# \) I. J' |let l 0
' D& t! S; s& j$ bwhile[ l < people ]0 n2 ?, U  l# c6 J
;;
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* c- c/ Y3 x. F! A+ g
[8 [5 {) o1 x9 z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* u0 j0 D! t9 l/ ]7 f; fif (trade-record-one-j-l-len > 3); U, m; H9 c4 `2 L
[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
$ m; e% e$ k4 v9 p( mlet i 3
) t: Z1 E4 k5 S$ J: Mlet sum-time 0
8 Y/ L2 P. [( r  iwhile[i < trade-record-one-len]! ?/ v& h& o- k- W
[
0 H4 o. v  L( \$ U. W- R2 Yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' [' y) `1 a! R' Y+ ^" ^% Rset i
/ Q# F4 Q5 J& e$ `8 T) ]/ r( i + 1)
9 z) @$ U7 I, O4 ?/ ~4 |+ v
]
) U" P: @  ~/ v) @6 y) L$ Tlet credibility-i-j-l 0$ ^' _7 `6 @$ x" n2 J; n* z; Q( W' U3 J
;;i
评价(jjl的评价)2 P, [$ u% l3 w# f
let j 3
  f- s- }1 g3 Q/ g) }let k 4& |2 z4 u1 {% c
while[j < trade-record-one-len]
% @; g  P1 X; P8 ?0 |[
; t2 y+ w! T5 A* G9 C' 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$ W8 u# T* u3 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)
7 b& k% }3 W( {set j
9 K: d* M' |7 c' O7 E( j + 1)
7 I3 G5 v& L$ e; h/ [4 K! }
]
7 d* H/ T" T% eset [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 ))! C( F+ v# r% q: R( {8 f

# I3 {% O/ ?3 T1 ~1 K9 D* q" k# a
* o- C; u$ ~5 M3 E5 \- W
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& K- B! C" f: h
;;
及时更新il的评价质量的评价
8 X  r+ L( o0 G+ d5 A9 ~1 _set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ a2 y+ v; \  a: l
set l (l + 1)! r" q& g# {5 ]$ l7 f8 o9 [9 Y
]3 W/ K$ L( Q, f1 ]8 G
end
: ^( Y& ?! q3 {2 P: J: a6 C/ E5 `+ T; D. O2 {. e
to update-credibility-list. o# V0 \: a4 _/ `- {
let i 0. E$ u' {% A2 D$ K
while[i < people]
/ X; t) M1 j) O[
, z+ G$ j5 Z- d& Xlet j 08 w) {# V; `+ n9 y; Q" `
let note 02 N0 @: V! y- V& |; M$ {
let k 0
- P2 }  W7 a" o2 d8 s;;
计作出过评价的邻居节点的数目1 v1 S" Y$ z! T! x3 v$ m; W. {
while[j < people]
/ B5 x9 h+ H) _[) X$ i/ m: l2 r4 ?* j# T5 m
if (item j( [credibility] of turtle (i + 1)) != -1)
* a1 t$ N; l2 L;;
判断是否给本turtle的评价质量做出过评价的节点+ [1 P: O: F! |" v) k3 l$ Z+ \3 q
[set note (note + item j ([credibility]of turtle (i + 1)))  @0 d' A8 Y, d! e/ b; Z$ o
;;*(exp (-(people - 2)))/(people - 2))]

& E/ J: w4 k3 I) cset k (k + 1)
+ B2 U, ]  H4 C1 O' R4 a7 l]0 r+ J7 k3 @2 r& S5 \
set j (j + 1)
( Z: f  z# ]2 q]
% S" @. p0 C# r. g. M9 G% }; aset note (note *(exp (- (1 / k)))/ k)! n' n4 \- [$ W7 ~$ L  p
set credibility-list (replace-item i credibility-list note)
) I, h& W' ~$ {) Mset i (i + 1)
# ^$ G, W$ `- L  h* B# |]$ v: k% K; K# @* F1 Y( I- e" V2 I
end) B% |; S$ K+ u) v2 {. z% U' Q
) t! ~! W, X+ s  m/ m' P1 n+ F+ M6 I+ w
to update-global-reputation-list. s" t/ V% v8 L! N
let j 0
+ y/ {6 y2 K. Owhile[j < people]
, ~: h' s. v/ K[. f: T1 p8 z& k# x) c: e
let new 0$ `7 R. \+ N" N' X" g( l- D
;;
暂存新的一个全局声誉: V3 w& I6 @: b2 c3 K
let i 0) e9 G7 O% Y. O* ?5 S  t
let sum-money 0* f' N, M* T; Z0 C
let credibility-money 09 J+ g& w) x; {4 T8 x9 x
while [i < people]
1 B/ F( p/ S  E% H9 m' h[
1 P* d5 v7 {! w: T7 k% tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: n: f3 p: \* `1 m1 \' d! P6 pset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ ^( ^! }+ c+ w, ^( ^$ [% a8 p& W% I+ _
set i (i + 1)2 A/ K# f7 Q# O9 }  x. W. N
]
+ A& C8 d5 s  w1 ?1 ~0 r! dlet k 0
& x4 P* w# O8 N. `. _$ W% |9 tlet new1 0) n' e( y) e( P, C5 O2 f, P
while [k < people]& z/ k- `% X. i/ M' K/ h8 n% j/ I
[
# Y$ d6 v5 O2 T. L. C) cset 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)( D7 \) o! R4 D* b: K! C* K4 ^% |
set k (k + 1)7 e& g: a3 R5 A" F5 j1 R; N8 ?
]
5 o+ G# S9 k5 g! b0 Gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
! e, G; T0 F; \& Dset global-reputation-list (replace-item j global-reputation-list new)  W  ^; E) y8 B$ ^
set j (j + 1)' k3 [. [" V1 d( t3 M' N. y
]6 ~3 M" S6 f2 R' u- |9 h
end
0 ]' W4 C' j: T/ b
; w; k$ a+ c7 b. L3 O
; `' W; l  o) H1 q9 L) N( f0 T! A
to get-color, Q2 H5 c& |7 C, ~/ E; i9 w. ~
4 l- j1 p1 K' j+ t7 D5 u
set color blue

& x9 e0 I* i/ ~( t, D0 nend
9 Q, h- {& o! q1 @2 O) x  S3 L, l$ B0 K; J- X& @/ q3 U
to poll-class$ V5 F+ m- P- g* A+ ^. O% k# X) f( _
end2 x: V. h6 X/ ~, ]) r
6 J  s, o( A# r5 @/ n8 Y
to setup-plot1
/ I. j+ O0 s+ t% h& V& E
- ]1 P4 a& q" E* ?set-current-plot "Trends-of-Local-reputation"
  R: H  T9 T& d5 y

+ @, c* S! r; g  wset-plot-x-range 0 xmax
, G: A* ~5 Q+ X& K  B. H  z* W2 M

: h, O; Q! C7 M1 @& i+ Dset-plot-y-range 0.0 ymax

5 r* L( ?7 @% Wend, t0 [, ?0 k/ G' C$ J
* f# }! d0 a4 f5 j" r
to setup-plot2
* i! ^" W. X! P' D7 J' f3 n; [2 ?, t7 O9 x
set-current-plot "Trends-of-global-reputation"
2 a# z6 }0 [0 S2 a1 v5 H
( u' ]- j. E0 T: ~+ H
set-plot-x-range 0 xmax
* e9 p5 a6 o+ b. Y
! e- b( d' ]! c3 {% v+ x/ D
set-plot-y-range 0.0 ymax
4 f8 D! G( q. F5 a- O1 o
end
7 x$ G( V+ V  f6 d! }- Y2 ^* C
9 c: C- y$ i, [9 dto setup-plot3( M7 z8 |$ W$ S' w8 _; a1 ]
: ?0 k6 A% k! a3 K# u) g) m& m9 V
set-current-plot "Trends-of-credibility"
" x. k. D# X% ~
) G2 c! X: l$ f( k. Q+ b! q" Y+ r
set-plot-x-range 0 xmax
+ l- l+ z8 A9 D8 q4 i6 k4 }
6 e. G( Q: c6 I4 e* J% L# s
set-plot-y-range 0.0 ymax

, j, }# r# `* f6 i: Tend
( R' A) f# W, ]. t' b$ _$ r5 f5 P4 A
4 O; |" q% N8 m" Q5 |7 kto do-plots
, Q1 ~8 p. [7 _set-current-plot "Trends-of-Local-reputation"* R& C" {  H8 K+ b# t# U* O" J2 Y
set-current-plot-pen "Honest service"- g, N: b0 ]" S2 O* U% x$ `
end
' u. P  T1 x* G( l# Q, _
: J, M( U# j5 x( J4 x+ {[ 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.+ e# k6 p# k3 _/ ?6 J
; [1 k# x4 F3 K2 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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