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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:: N+ P# O  h- V: F$ a; @
to do-business 0 l  t$ [4 p1 p7 {0 D. @" A
rt random 360
0 d& v* w+ W7 m% | fd 1$ O7 I/ o! S: Z* C
ifelse(other turtles-here != nobody)[7 ], t3 q( e" X6 Z9 h8 j& L4 R
   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.  D; [. n2 ?0 K# k* R
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
/ J0 M9 C. T( s3 [" ]5 i1 V   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% _. g; d. F; y
   set [trade-record-one-len] of self length [trade-record-one] of self. v( y( j8 o2 _- t3 O: w' N
   set trade-record-current( list (timer) (random money-upper-limit))
% H# M! }) m, K$ Q% n- c# U9 j" F
问题的提示如下:2 p6 S. e3 `' m' }& ^( y6 Z
% I" F5 i- h5 c0 ]
error while turtle 50 running OF in procedure DO-BUSINESS" m! p, ^$ y  Q- x9 }9 A" ?
  called by procedure GO+ {! Z5 P2 s* M3 X
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 {0 F) [9 q6 q( k- }6 d2 i
(halted running of go)+ G& D. s- F+ G4 o$ S' E

# e0 t0 H, E1 a/ K2 Q0 b4 O0 ?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~~8 p8 d* O6 q0 _6 Q8 U7 H: V/ S$ U
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
6 O- ~6 w9 H7 L( ~/ e1 Zglobals[" E7 y  O& s$ ]8 B! J
xmax
4 m2 s. ]* N3 n9 O: y/ i# o0 Uymax" K" s, ^) _6 s7 m  W
global-reputation-list
( k- o) }% T& j" \* o2 k
4 h! B9 t& ~3 E7 X;;
每一个turtle的全局声誉都存在此LIST
1 o& v5 p7 Y. I1 \. x9 c: vcredibility-list
: [7 b; ^" n. S- X+ `+ z3 H;;
每一个turtle的评价可信度
" Q. _% g0 V, i& v2 Phonest-service
7 u8 C% Q) ~- p$ _) zunhonest-service
9 c# M" ~7 g3 U! T3 }) M" Goscillation
8 ~: l4 q3 B; X, e* B" l: Vrand-dynamic
9 h7 ]  _9 y( E]& O# C6 v# C6 @0 l) E
& r" z9 \  ?) Y( q+ f
turtles-own[
; Z$ _: R2 c5 y7 L/ F/ v7 Otrade-record-all3 j+ @' t4 C' i; b. l$ l% T
;;a list of lists,
trade-record-one组成, o! @' l4 w0 ]0 A5 G$ \- y
trade-record-one1 V% o' I5 {# s) P2 q
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. d- G2 P6 R9 q
& F" ^( ~) Q! v( w5 H
;;[
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]]
6 I- R" |( ^  v( e+ R: ~6 Otrade-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]
: Z4 H* K7 u+ {1 e8 S$ _) Z) dcredibility-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list7 h( a: I% j) P# p, f5 b( }) d
neighbor-total3 |1 ~- M- A1 D' B- L; E* m
;;
记录该turtle的邻居节点的数目  o4 A) C7 D0 |5 W1 C+ |$ Z8 P
trade-time1 B3 \: V. p$ F5 O* {' B9 S
;;
当前发生交易的turtle的交易时间
* \6 H" k! I$ S# ]( B( U* |appraise-give
) Y7 W. z( S+ q$ \' ]1 s# f;;
当前发生交易时给出的评价9 S% f5 h) t0 c% U& Q" M8 |5 T
appraise-receive  O0 o3 L. k2 j! `& r0 W: X
;;
当前发生交易时收到的评价  w6 ]7 l* ?3 w6 O# p
appraise-time
' W+ w; R6 T6 T6 x# M' v;;
当前发生交易时的评价时间
" r) O4 u! @+ k  w# u! olocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* P# s3 O7 l$ q# |+ {: L( _trade-times-total5 |) \! o0 q4 p5 @# I5 N+ o: h9 D
;;
与当前turtle的交易总次数% T& y" X3 G$ g1 P
trade-money-total
& f) b( J' z& X. g' K;;
与当前turtle的交易总金额& l6 P( i1 F7 |# P4 a- H, T9 {* u
local-reputation
; v4 {$ }4 |  {global-reputation
" @7 p9 B- A, q) Ycredibility
. T: N0 m/ q; I! ~;;
评价可信度,每次交易后都需要更新/ O: Y6 I8 D( t3 G
credibility-all3 d1 T7 v0 z8 k0 r" g) f1 |
;;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/ B6 p8 y1 y/ f. J5 a, p, C
& D2 i+ E( C2 `- K! Q5 g9 e
;;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; e- M# x" ^, ?) p+ K9 S# \
credibility-one
7 k0 L; Y; D4 ]+ d" a;;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
9 T& @! A6 h5 H4 ~6 Uglobal-proportion
2 O# I; a5 \! B( ]: hcustomer+ M( L" H- `3 u. B- K! R
customer-no
8 Q4 F2 t- U; ]. z- b3 v2 {3 [8 ^* Dtrust-ok. B8 F8 [7 r/ }& a
trade-record-one-len;;trade-record-one的长度
1 n6 @9 M7 k0 f2 _% H]% z" X$ N& q9 W: N5 I$ L/ R  ]

- W. d: _- ]/ }7 u+ f" l: q% J;;setup procedure
, D9 z# J* K8 L- W  K
8 l- _: y* L4 I% g9 V) ?to setup
2 a! a# t1 Z" k+ i+ C4 N/ C, s/ I) n) m# B8 M
ca

$ K( S2 h. u! f% A# x) i+ i2 r" H/ h- ]7 x* }' Z; N1 L
initialize-settings

4 ~& ~  Q  s4 Z8 U- g2 G. K* A+ g7 Y$ S1 v! D
crt people [setup-turtles]
/ t& {2 k1 C$ W1 v

  Z' C3 e5 x  f) r6 Freset-timer
, R* i5 L# s: O- B7 K% F3 m
* I9 t' J* s! k7 O
poll-class
; I( V4 W& U8 H+ P4 P! C; [0 d) x

( c- g: X, ?+ C4 S2 t4 ?setup-plots

, `/ l2 ^4 e, l5 }; |& Y' J$ @9 K5 a6 Y2 Q$ e
do-plots
1 p9 Z( P3 K$ r+ F! }
end  |% [3 J3 @$ U9 e. u& j  t
+ R4 f: c2 }( x
to initialize-settings% N) g# f# r; [6 @9 }. A/ f, _
. ^( _2 o; I" m6 M* k* i
set global-reputation-list []

/ A1 a" o* P: O4 s3 n" x+ I1 c! E* H" s8 f! K7 T9 z
set credibility-list n-values people [0.5]
" J" ~, j+ X2 Z0 b3 }' y
7 O7 \. J$ O  s
set honest-service 0

; [! r' l+ C/ F( n- z7 G6 h- A* k  K' x4 Y  `. M
set unhonest-service 0

" X% C; j' \0 c6 m! G1 L" U0 s' ~" w* H
set oscillation 0
% D" e& V. _) `  |7 M% @  D. c

) y( |% k0 U& g8 tset rand-dynamic 0

( O  N# }" |5 F; U& eend
( s6 x8 l$ X$ M5 s9 M5 K" g; _, S0 g# E$ R# p! d9 r3 B
to setup-turtles 0 \8 |! ^. C, J& ]
set shape "person"  c" K4 s; ?; D' `% k; P3 R# S
setxy random-xcor random-ycor
9 u- x( \2 ?1 A8 e$ s1 dset trade-record-one []9 E3 ^& d! y- j; h/ v
" V; ?# g& d( R( J' x
set trade-record-all n-values people [(list (? + 1) 0 0)] * f. p! h3 H9 g7 ]4 T
1 V# W+ s3 o! z! S' B4 ?$ O
set trade-record-current []
4 D% s, e8 O  V, i. Zset credibility-receive []
* M7 F0 f. I, x& [1 [set local-reputation 0.5& ^8 B- X$ R9 Z( _$ w$ E
set neighbor-total 04 ?( t! C+ v( V" r7 Y
set trade-times-total 09 {0 s8 M) _$ j' A; N4 F- W: \
set trade-money-total 05 ~$ u6 S7 e$ d. e  }7 d. ~
set customer nobody- G; [& S, b) E* d& Z& m
set credibility-all n-values people [creat-credibility]
) z: \- \! D/ `1 H# Z2 Y( bset credibility n-values people [-1]
) y! {9 }6 l7 U6 uget-color
/ T1 K- Z) P' p$ [' L, ~

" g0 v& ~& ^8 Rend
& Y: v  W" F+ F
: [( J& I, n: B! |/ o. hto-report creat-credibility
% H" r% S; T- M, {, r) Qreport n-values people [0.5]& z4 s2 ^' ^* d5 j) r1 G' F+ q
end
: P4 A+ I' ?7 p6 L8 Z; U! A+ ~
5 A4 D, ^& x% d& _0 d+ Zto setup-plots
/ j! k, Y" @# \- R
  k! u" z4 M( g) N, _) _7 Mset xmax 30

2 B+ v( a; H# H& k7 ?
2 e6 Y. r/ g: C! E" nset ymax 1.0
5 j- ?& z. A8 y+ t  s3 S9 }
: p# x: k8 k, x( B" K4 `
clear-all-plots

6 b4 r$ `* ^+ Q! `1 J9 U! ^
% q6 \8 x( ?( @0 d0 Tsetup-plot1

# |6 V% \* X# G# N# [* n: T+ W0 `. @$ B+ u& p" a
setup-plot2
$ t; s0 Q5 [/ l6 _* b2 }( Y! ]" {3 t

+ F. u% @$ i( H. @setup-plot3

! ^7 P' S* H+ `+ H( l: |/ V" jend
5 p) h5 A. x8 X* z* F& l( L  ]: ^
;;run time procedures3 E  n& Q  I- v' b) t

7 `$ x1 _. o, Y) mto go
( q& |- g. A1 Z$ u  a) U( ]2 Y& C7 S0 {, g8 d; ?  S; V) R/ `
ask turtles [do-business]

( u2 P3 ?' p3 j. Y. m9 Nend. O5 {0 g( }% s3 c% C) L3 S% u6 A8 U$ p

$ A8 ]0 p" `8 H# k# O5 U9 {to do-business 1 n7 ?; Q' x, C' y9 Q
( S8 c+ k) P/ }  e) g2 M

1 A0 w# X! U7 w- N% Art random 360
; ~6 `  d/ ?& S9 v  t

! w/ d* L  @+ U: \: wfd 1

3 `! L( _& E: `  A7 t1 e. z, h' x
ifelse(other turtles-here != nobody)[

% p( E1 E) V# O  G# m+ s- l  t. N* t/ R* a
set customer one-of other turtles-here
9 j: s: T! g/ U" }, V+ f! L- S

9 x5 f# R: Z0 v  I# S;; set [customer] of customer myself

: M+ E& W6 Q1 U0 h$ V1 o( H4 f  G% B$ N( N/ j+ s& ?. u& x! `+ S
set [trade-record-one] of self item (([who] of customer) - 1)
, M( Q% z- U8 y/ b6 |[trade-record-all]of self" J. j5 M0 h" F- Z# S' G
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
$ C" u: z( u0 R. N5 W5 c

/ Z; A* C8 P# j, P+ n# L0 m# Eset [trade-record-one] of customer item (([who] of self) - 1)
7 [( J, }" y; B  r( f$ O  ]6 y( {[trade-record-all]of customer
6 e$ G) `+ F# w7 B  v, q* j
6 r( ^  f/ a( S$ _" B* {# v4 J! t- q
set [trade-record-one-len] of self length [trade-record-one] of self

7 ^0 ?( j9 j, i! h* c1 m% M) [4 U$ Q8 `; k& y: z( j* w) W% R
set trade-record-current( list (timer) (random money-upper-limit))

; e8 ~  K8 L8 B2 h0 d( `  ^$ r7 t; d
ask self [do-trust]
4 V0 ~/ o3 U+ k/ j2 k;;
先求ij的信任度. O3 w7 Z/ ~" `( S# Q* Q
+ `  K. D0 q( h
if ([trust-ok] of self)0 w0 y+ x0 L8 P5 [
;;
根据ij的信任度来决定是否与j进行交易[# g6 W, u7 X" h+ z% _. ~, R  s
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ T; f; S7 Y1 A) v7 \, R

7 d, e9 m. `$ X; `6 w# Z3 s/ P9 L[
* t9 Z1 o3 _: a
# Q6 k& l, k  i' s3 v
do-trade
$ A. q/ |# X0 b  [& p; F% O
2 `/ N. ]2 O* t# B- P& v
update-credibility-ijl
: P6 C& R; S) H' H$ z9 R( |
$ O/ }1 _- Y" g
update-credibility-list2 o1 Q5 S! g, X1 ]+ S. t3 B4 Z
7 @7 i* b3 s& e' {- f
* v$ Z, e  z( K6 ~
update-global-reputation-list

' J6 x9 h  B$ h+ @8 N! x7 T- _2 D7 L" e! Y! |) E- v( @
poll-class
5 G4 B/ _" F" `

4 H! {; J  C5 v7 G9 n0 oget-color
. L- `# w# i$ A5 Y4 U4 p+ |9 u- J* |
# b( g( D. c$ r6 [( T' l
]]
0 X$ b( t4 y% L0 J9 z( I# o
0 R+ v' K2 N) `7 y7 f5 ]# b& `;;
如果所得的信任度满足条件,则进行交易
, b, N2 g5 J6 I4 _9 T
5 P7 F5 E  O# }* s[

/ x" A! ?4 _# B- w' T, N. g( e" Z9 C) k8 z2 N9 @
rt random 360
$ B% t$ z1 K$ |9 P, R$ U

3 G2 `) p( D- p1 d; h9 E% afd 1
3 p, V% n+ \* `, {

% c, v& {. w" g/ L8 W% p]

. k8 s# E3 p# C: X, Y  E3 j) M; ?& S* I
end
8 g- h0 h6 a& N% i5 w/ I0 s. T

6 Y6 n4 X. L, I: e% cto do-trust : ~% d. s' O* f, ]% X
set trust-ok False. \* T( D- d% q/ L' _* s* w

& |) V4 e7 R- U+ z! b! }5 d* X* s
& ~2 K: v# ~$ m5 a  ]
let max-trade-times 0/ T, n9 f) Y! K# N7 f0 k) S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 _3 G' k  H: ^7 v, Y
let max-trade-money 01 d* e! z. d) y) }8 A: _6 |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
7 I2 Y* y- W& Q1 M2 mlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% K7 M0 P3 h9 D6 Z
0 G9 U5 A9 p3 r! Z, s: R8 o
8 ~; }! K  k% }
get-global-proportion
0 _; e. U; ^- ^2 F- G. zlet trust-value
8 f5 L3 V% I7 j) e# B: m! Ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

& r/ Y/ G# W' d& a4 Dif(trust-value > trade-trust-value)/ p6 Z  Z/ y- @1 f
[set trust-ok true]+ s9 _( D) N5 A8 e* r* R
end
9 f2 _" y9 K/ z
" f! s- {( Q/ X; C, P6 q' Gto get-global-proportion
, X) l9 l9 A2 W% v, ^( ~+ z* rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" T# D6 j: L  X, V* k3 f: w
[set global-proportion 0]
7 d( I$ n2 F6 U" C" w5 X) q: \[let i 0
+ {% `1 t% A/ G* c* ~' \4 Mlet sum-money 0
" p7 k  J" `1 p1 b) W/ B7 wwhile[ i < people]. O5 M) |1 o% a/ t2 p, I9 J7 [
[" N* J: E* ]4 Z! H
if( length (item i& g5 Y, j, s* F
[trade-record-all] of customer) > 3 )

5 t. u: ^! t, Z% b, s, e[
7 O6 k, W5 ^  p% {) u$ o8 vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) t/ R+ J+ y) Z
]
( t- |, k9 y. l0 o0 u- d$ {* b]0 e% O+ U( U1 r$ _# ^4 c8 }
let j 0
6 l$ \% S8 [: {, @let note 0
; ^- }) E6 ]% N6 i9 E$ y# o+ u) ewhile[ j < people]
: t1 f9 u/ j3 I$ }[% }- i0 [5 u5 k$ P
if( length (item i
1 j. ]1 L: y2 x3 C" B[trade-record-all] of customer) > 3 )
' v# n5 n6 F2 }" J+ L
[. g% K* a4 n' X9 ^) G
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)( R1 d/ S$ c- [& h$ q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 |  Z: h3 ?# |% \: X
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 N9 J: ^# |2 o) e]8 U( b4 V% \- D+ z3 R. |
]( \3 B% c' y1 d5 ^1 l3 T: _
set global-proportion note
& b  {/ a7 G' B. n4 Z: o]
( ]  H4 u* Z7 R+ |( Nend/ i: s$ F" Q" y; d5 |6 @) F0 X% }

- |+ O0 n' v, h: Hto do-trade
0 w% x- a: J6 |8 g$ n6 ~# D* i;;
这个过程实际上是给双方作出评价的过程
/ Z% _3 W$ b  g) L6 aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
; J7 l! G2 ]  S# w9 F: Q& U, Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 d- p8 i# d) B9 lset trade-record-current lput(timer) trade-record-current
  I) \- i- x$ l;;
评价时间" D+ I' o# D" v0 T4 M
ask myself [& P+ T( C. v2 F% z. `
update-local-reputation+ m7 E* L9 h. \
set trade-record-current lput([local-reputation] of myself) trade-record-current, o, z5 b8 h6 q
]& y- u( @# o/ L" A, a, H
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) T4 x5 M! G* y6 o. m1 N" Z;;
将此次交易的记录加入到trade-record-one9 a: B+ ?1 X! E: u6 S. `/ W' v* \
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 J& d! m$ \8 M2 b' z3 Dlet note (item 2 trade-record-current ). c9 R9 e: @0 ?
set trade-record-current
8 U# W$ c6 h" R$ e3 N2 [(replace-item 2 trade-record-current (item 3 trade-record-current))
# [; \6 z$ R3 x1 \
set trade-record-current7 z. _# s1 M3 T, Q1 u
(replace-item 3 trade-record-current note)
/ l% x( U0 n# H- C3 e2 D
* U0 y7 P" G7 o8 s2 Y% x3 y6 F1 M

5 _% T+ u+ x+ G0 f( Gask customer [
9 O* q7 l- E) o3 [& }* Z+ M2 Lupdate-local-reputation+ c7 ^/ z+ W- A/ j. f0 A
set trade-record-current" ~7 y2 b4 D3 I6 W* l5 M
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
3 E9 F" V7 G1 i9 Q
]! ~, _! k* g+ V$ J* A& ?' d; q
; ]3 v+ R! b1 J0 I. D1 b

; _5 u! e* n9 s2 bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- \- c; H9 C7 w) O1 C- m
; i1 ]& d& l$ K* _8 z0 E, ~/ f( b
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" r4 c8 ~3 z  v. l/ U: m
;;
将此次交易的记录加入到customertrade-record-all
7 @7 k# S& m. K( L: fend
0 Q6 W. _4 U- T5 ~+ }
0 Q( }- l8 i. N; H3 U. xto update-local-reputation
; e) e1 q2 n0 v9 {set [trade-record-one-len] of myself length [trade-record-one] of myself% B, M3 n& W" Y4 s0 R

; ]. W+ r, F9 K' J; ^/ O' K: N- x- {0 D% f. c' m  f( B1 ]$ E
;;if [trade-record-one-len] of myself > 3
( I  q6 j! w4 ~8 L1 u# n1 y
update-neighbor-total1 M, ?% X. y# U. a
;;
更新邻居节点的数目,在此进行$ Q; }0 r7 l% S- J
let i 3) w; S9 p! z4 V! K2 L+ d
let sum-time 0
; I% d0 D$ S, t) N6 t  cwhile[i < [trade-record-one-len] of myself]$ o$ ^3 }8 u& y8 U9 P: w
[9 D. a; i3 q6 b# m% G
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ): L! q5 R8 B' V# ?9 G
set i
3 D+ h7 i+ D+ s. g' C- h( i + 1)

& N' m9 _. F4 Z8 V. w]
# M- D' j# {6 c6 J" g. V6 F, Wlet j 3
5 g% J8 r2 G7 W+ ^let sum-money 0' R2 I7 F9 e' r/ Y
while[j < [trade-record-one-len] of myself]
/ `0 s& \7 W2 ]8 X( b8 {[
( o  d3 e* t* Y9 w/ B9 pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; s" ~: t% ?6 U& p+ {! G, fset j
0 [3 b* J4 K3 E' q( j + 1)
& a8 T+ N& v( l* X  Z' n) F+ y: ]
]
2 ^9 S& q3 u! k! p: c4 k6 [7 Glet k 3
2 [& b0 u) A. Dlet power 0
; a0 E& y: V* R. h1 U/ Y6 P* Glet local 00 z9 o. X) ~! Y2 o2 S
while [k <[trade-record-one-len] of myself]2 T2 `1 _7 J2 k6 O
[
0 j( x# [9 X5 }/ sset 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)
& y& e# Z+ q$ p! G9 u( R* L7 nset k (k + 1)
; i) i$ B" t6 S: i; ?; L8 F]
" s! F3 l6 d# p( }0 @* k- T) Hset [local-reputation] of myself (local)5 x- M  I; a7 s" s% s
end8 A( s! T0 _9 J- N. o0 @3 P
( ?1 o  W0 G" g: Z# T
to update-neighbor-total/ k, l4 H6 W1 a
, @/ V  l8 M9 P7 P9 b7 C
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]7 q- {; f+ |4 D+ }- y# R

* q9 d: N. O7 V* V; F! P
! a! z7 Z8 S: J  g: o) y0 F
end
$ H$ p, |; F+ Z) b$ N+ e. M4 \6 g) ~% g( z! W4 `
to update-credibility-ijl
# v: O1 j6 f, Q2 N, ]! K' H, r% x# n4 E$ x7 [
;;
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。
0 U2 q: P3 B0 \4 N* Dlet l 0
( T: K4 J# w6 A5 A9 B! Jwhile[ l < people ]; q# r* }. L$ l0 c% Q' }1 n
;;
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
. r/ M, A+ h8 p5 p/ o[
6 |- r! W# Q$ a; k  ~. elet trade-record-one-j-l-len length item l ([trade-record-all] of customer); m0 t: [% o, G' A5 ?
if (trade-record-one-j-l-len > 3); \' p7 O" G- H. T
[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-one1 X4 C- T: g0 e* Q# X
let i 3$ g( p8 ]9 u/ a. L9 C
let sum-time 0
, e) P0 ?* r0 Y. uwhile[i < trade-record-one-len]3 g5 ]% ]2 y8 l+ U6 H
[7 p* o( _# M- b8 p2 {" M# l
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
1 @: }. l0 k. B5 iset i
% J% U) B: t$ M& z( i + 1)

, J0 t* V4 s7 L, m]
8 l( F' {$ F' v# l, t, \let credibility-i-j-l 0
& s0 V& G  D" [* N* L$ P' f;;i
评价(jjl的评价)# a2 s9 a: |6 v# @; y! `% T8 l
let j 3
* n6 W7 d4 W* E: I6 I& A8 {9 s' _% `let k 4. Q! d: P, o3 F8 @7 B. O: t4 j, S6 h
while[j < trade-record-one-len]1 \6 y' V6 ]  ]4 t
[
( o4 U$ n# b* \3 V/ k# i) B$ nwhile [((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
- b' O, C% `7 U# R4 Xset 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)
/ K  f, A& ~- j9 |# ^7 c; W0 fset j! y# v. k, R1 M% e& T6 T4 e" N
( j + 1)

- S4 l. V# }, z/ h5 l* \; q9 S* O, r]2 i4 t% J4 ]1 n: 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 ))  j) J: f) H  H+ i9 u- L
: X4 A* v& K  ^. Z
8 i! g( P, O& w0 S
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& w, v5 P% m- a
;;
及时更新il的评价质量的评价1 O; ^' }2 P7 O% B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]' q  G8 O1 K  e: z
set l (l + 1)1 R/ U; h6 L! L' D/ t( L5 Z. d& c
]8 {8 b9 L) @& ^  a
end
; w4 i: w. I! e9 k! j" t# D7 k" [: R" W2 A; e: j3 ?2 h
to update-credibility-list
7 S. y$ F0 a$ `let i 09 e2 @  a4 f. `# S  t
while[i < people]
! z' }4 ^2 N7 I4 F, _, E& Y[
2 O/ t6 O) `. T  B: l! llet j 0- \- N4 o$ {- D; u
let note 0
: ]0 ~4 \% X( h3 u# [let k 0/ k2 `" i) G: w/ D* w
;;
计作出过评价的邻居节点的数目
* c! W  B4 P+ N. kwhile[j < people]
# R: ?+ o6 c% v( P; t- q# c$ A' S[6 f  N* N, G7 j( ]6 p
if (item j( [credibility] of turtle (i + 1)) != -1)' B( U7 j: {  B2 R) A
;;
判断是否给本turtle的评价质量做出过评价的节点
0 t! Y: {+ C' ~1 R* l0 ~[set note (note + item j ([credibility]of turtle (i + 1)))
3 Q, J$ |5 f  i4 C- b# y;;*(exp (-(people - 2)))/(people - 2))]
) A3 t% ^6 R" k1 w5 @9 S
set k (k + 1)0 \1 [# F; ~* g6 E+ s% d: m2 L$ S  z
]
  d5 _. t. |& m5 V2 Gset j (j + 1); d) ]3 n  y8 q. ?
]
) e; w. `, a1 @) V/ G4 D$ @- q  M# yset note (note *(exp (- (1 / k)))/ k)1 U0 ?! ~+ ~$ X" d  y9 w
set credibility-list (replace-item i credibility-list note)
. Y; r# W8 x  b7 Uset i (i + 1)( N0 }/ i7 g( O: H4 @
]& j# J/ z5 `5 S6 k' t/ Q" O5 R! F
end
) k) s8 O. n$ c' _8 q" w, }' S& i& T# K2 N: c1 B
to update-global-reputation-list/ o7 u- `- j; e& _# }/ Q% g
let j 0+ O2 e0 ?# D* @* T' A
while[j < people]
7 N% Y# z  m4 e1 E- ?[9 B, z/ q, B0 j' ?0 E6 f0 z
let new 0
; F/ |* Q& T$ |9 T+ J;;
暂存新的一个全局声誉- F6 u' N& e. i1 h$ O0 z5 Z
let i 00 a7 X( ]& P6 x$ v& w3 J
let sum-money 0! U% ?8 J6 K, c
let credibility-money 0
% M3 ~5 Z4 ]" w8 S; d4 zwhile [i < people]
9 b3 K4 o! b+ X2 T2 x2 X6 S9 V2 D0 Z[% Q) @. X5 [% K+ p
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))" ]! M+ o* h9 F4 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* }" F4 b4 q3 G! d+ V% R+ bset i (i + 1)
2 N: I) O7 g8 V7 f]+ Y: ~/ Q; P, G6 ~: Y: V& }) T  ~3 p
let k 0
+ ?& ?: x! U, P: Q9 z1 Y2 g- }; g. Y4 Plet new1 03 s+ A+ [. e9 f8 y- _  T' U# O
while [k < people]
1 Z; R" C# |$ u0 U3 `[
. ^! [$ A6 y* xset 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)
5 s3 a* s  s$ zset k (k + 1); p+ P# |9 g; Z; |, h- f( O
]* W% k  t" K2 F' C7 S" g$ U) Y
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( w* x" _$ B7 {* y/ [
set global-reputation-list (replace-item j global-reputation-list new)
; I+ Z7 G+ K& e  x0 o! \+ m3 W9 Pset j (j + 1)" f: X# R2 z0 P" j  [
]
9 f& v. H8 i& E2 v  |% K/ `- jend4 F& ~& b% k% F) K. C( U7 E+ s

/ d; ?' X( V, h; Q  f9 w7 o
; k  e9 \- C! M) {# t: L) @) J: d$ {' l* g$ n2 f
to get-color
( l! E" e8 w* R
; y+ [/ e/ Y5 E$ ?, r- l. q& @7 R- [set color blue
& n2 L6 e# n6 A$ l6 s  D
end4 q6 N# f3 e$ K
2 B- b4 N4 ~, N# b; B1 E, N
to poll-class" p9 B; f0 |; t* B
end
* w  A, ?6 G4 d% }0 E$ R) q) n  ^- w) [5 \& P
to setup-plot1! @4 [8 Z5 [% s6 b6 b* K* ?( z

" I9 {$ T. t+ qset-current-plot "Trends-of-Local-reputation"
6 S9 i3 W- c7 l3 ?; h. E3 N/ Q
) D) |: @7 d# n$ E- Z- h- i
set-plot-x-range 0 xmax

* ?& `, K- o# `) v9 b- n' d, ~$ _4 W7 M0 J+ x5 W
set-plot-y-range 0.0 ymax
- p1 P9 W! l/ b6 t
end' L# K& q# k7 i1 x6 p2 I
+ X; W% _8 p- H6 W8 y' U
to setup-plot2' k7 g5 X+ v" H: _5 P4 Y( F  @

7 W; U1 u1 Q- Mset-current-plot "Trends-of-global-reputation"
" Y% v, R8 r7 K

% C, ^& B0 L; fset-plot-x-range 0 xmax

/ Q2 T/ @9 y. M7 q) X' V9 s0 z
0 V1 \* }  X6 wset-plot-y-range 0.0 ymax
  b2 W+ n, T5 S7 r
end
. p8 ]- I- v2 I0 C8 k; n( ]5 ]3 h; D- o  Y8 l; N) }
to setup-plot3
7 M2 p0 y) t( D! o
- b! F) U2 B4 Lset-current-plot "Trends-of-credibility"

: E* H. P+ T1 V  E+ p8 @1 B7 o" {- P
set-plot-x-range 0 xmax

4 z4 ]0 T- ^# E4 g
7 Z! s" d3 a" C2 r# B. {set-plot-y-range 0.0 ymax
) H- r2 y# H3 ?/ q
end- S2 k& P$ H. x1 Q' a! ~$ U

* ~# R; R7 l8 ^3 `8 Y  [# Z$ P6 _/ Kto do-plots
% y# o; `1 f8 Yset-current-plot "Trends-of-Local-reputation"  m# I/ u8 v/ O6 c7 b
set-current-plot-pen "Honest service"
! ~  v* t& k1 gend
. c* Y; C/ g6 O; u$ }# O( [% x9 i1 I6 c1 u  m! E; Z
[ 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.6 l7 U" c3 j/ l  G, g! C

$ Q) V' _9 ^& ?9 }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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