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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:) g3 ?' Y$ v- A
to do-business 5 R# X5 p" [' C' v
rt random 3607 Y; |. `# n3 l/ Z5 O# _
fd 1
6 E4 o8 {# h: K$ N ifelse(other turtles-here != nobody)[! j& |2 J( N. |2 G# Q4 m
   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.* c9 a0 h+ n, e  i* n5 h
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' [! a2 R& A' d: B; L3 q6 }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer7 J; Q4 I9 G! N  D
   set [trade-record-one-len] of self length [trade-record-one] of self
/ j8 y; H7 n5 _7 G0 e' K3 [   set trade-record-current( list (timer) (random money-upper-limit))3 h/ }6 R/ E; ?0 N
' E0 L) I( E8 f& a
问题的提示如下:8 R& b" |, g/ {

4 ~& K) y/ ^1 R4 p! P  oerror while turtle 50 running OF in procedure DO-BUSINESS  ~5 Q* W' a. h5 ]" G/ N5 j
  called by procedure GO
0 b3 {5 D8 q; }0 j0 zOF expected input to be a turtle agentset or turtle but got NOBODY instead.& e6 j) k5 _: a6 I
(halted running of go)
. v' v3 X) F1 N+ ~; O) a/ P0 H6 G
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 c- u4 K9 s6 ?6 X7 J; I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5 ^0 y4 G+ h: X  j- v5 U
globals[5 b. j- x! z6 K# s
xmax4 A& u  x# ]) u; l
ymax
! ?6 L7 v  E2 o8 n. {2 i. n) zglobal-reputation-list2 g+ w5 S3 n  }( x: J* }. O
2 {8 O' V, a0 {8 L) w  F
;;
每一个turtle的全局声誉都存在此LIST; w  E0 N) \2 j! H3 \( W, j$ r7 ^
credibility-list5 O# y; @, ^* n0 t
;;
每一个turtle的评价可信度
. T9 S% }% \4 \3 @: _honest-service
, ^( ^% _. Z, b( u' Z: Punhonest-service1 w3 X- D8 ?- ]) n, q. _2 W
oscillation$ x$ t2 L9 E+ W( P
rand-dynamic
: D/ m/ H: a# i* v" ~. G]- G! K# f: e5 r! r& U% p* ?
1 U0 ]5 K6 I  W, B6 e
turtles-own[
. j7 }4 j9 C- f; p" J+ P$ S' \8 [trade-record-all
! \# J6 `9 F7 e6 }1 r" ]! p% R8 C; }3 _;;a list of lists,
trade-record-one组成/ e! ]: ~7 F7 y  G
trade-record-one
: e6 I# n' d; V5 @' L6 `6 ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 {# q5 x8 r* W4 n" ]8 m- h
" ~; x6 A, P' O8 W2 S5 ?;;[
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 m. |6 i7 s7 c; y+ w% @
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]
  M( l, S& j: Ecredibility-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
: F8 ?" x3 M. Y( W% wneighbor-total1 ]1 L0 O/ Z0 T
;;
记录该turtle的邻居节点的数目) n! `% N& k4 c# b1 N" u( h. P
trade-time
4 d3 [' z& Z7 M;;
当前发生交易的turtle的交易时间9 p4 b, R9 `- e4 A9 L/ v
appraise-give  }6 |$ e) J- q% K" B  Z: b8 Y
;;
当前发生交易时给出的评价& o# L( K7 J; Z. C
appraise-receive
/ u5 I2 Y) }6 \- x# f;;
当前发生交易时收到的评价4 ~' n  W* O2 z4 }" U, [( k' M9 \
appraise-time" \0 F# _* ~# t- M$ o! o$ j4 M$ w' Y
;;
当前发生交易时的评价时间9 a+ Y" ]8 X& I3 @. e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉! l! r; D8 _' Y
trade-times-total
7 y* [6 j2 m9 u. o6 \( y, E;;
与当前turtle的交易总次数- T7 D+ \* ~; i$ f( N/ V
trade-money-total
* O: X* M1 ^9 w/ j3 @;;
与当前turtle的交易总金额$ w; s( ~2 o) i" z7 W2 `- m
local-reputation
$ ?4 v! e; b( ?global-reputation
2 A0 J/ o$ J- J+ @& `credibility
# }1 ~( c8 k1 {" N9 H5 w1 |' _: l;;
评价可信度,每次交易后都需要更新1 i0 X$ Y& Y7 g5 F0 }8 L
credibility-all
4 @/ \- D0 O6 i. p  H# G' D;;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) a/ ?7 n) [- {6 P- y
3 s) Z5 }: l8 M7 h
;;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# ?. I) g& H. Y, a: ~' O
credibility-one
8 N! Y; v8 c5 ~( r+ P1 u;;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
) Y4 v" i9 Y1 c7 {4 G- xglobal-proportion
- ^3 j5 o9 b( i; `# |4 acustomer- B6 i/ U# [  P2 c8 y; K
customer-no
3 c/ n) n8 |, Y( qtrust-ok
# f. E0 i5 v2 d* e. M4 P- X4 _* Xtrade-record-one-len;;trade-record-one的长度
. j6 k' q: r' W& A]
; A0 v9 H( u( x( X) l( i  a7 ]6 ?7 _3 n- I
;;setup procedure+ I% x- M  E( j5 Y& W3 K

; ^- m& U+ \. `6 h  Qto setup# w& z: T/ i4 _: Y9 W# n# ~6 e

, J  M- }: |7 K! J( j$ p5 Fca

6 S- ~. {# D* k# _! [, t0 ]" G, K
initialize-settings
- m' S+ b( ~  W0 o  T# Y1 J, D! |! h

7 o0 r$ J; {( H0 n/ G' Qcrt people [setup-turtles]
+ L! G9 [' G: _* r* W; @

/ K' Q+ u$ |& x( O& Q1 breset-timer
2 _5 O. N1 a" U8 Q& Z" P: ^5 I6 k3 }

0 X7 q. u8 r- xpoll-class
" M9 _3 }% d& a, f) o' ^

! G; q+ d3 N- g4 N! Psetup-plots
" F+ t0 D' ?+ |& |

' g% N* t8 m# w( ^  P/ Jdo-plots
6 W2 g/ {. `& {8 l2 O6 o
end
9 i4 T- P7 J8 m1 V- `
1 k/ P3 K& b9 xto initialize-settings
; _# Y  c- S8 o; A
  U3 K% f! G. O/ a' oset global-reputation-list []

: J# Y2 ]; v5 s+ i; x- m7 _! _( x8 o" r. Y9 g4 @0 k" [3 h' o% K( _
set credibility-list n-values people [0.5]
2 y* V# o) f0 T& ?
8 ?6 d' V& J6 S$ E2 p* j
set honest-service 0
# R7 g4 ~7 u. z9 O3 b5 S
* ?$ F- K2 W; L
set unhonest-service 0
+ g- }: a/ D7 v
) G0 V+ c. ~" p, D
set oscillation 0

& \/ e8 |/ t- J  p( m0 n7 S
4 W! c$ ?6 o8 _. z, J- c0 hset rand-dynamic 0

* c0 [$ C% I4 V3 p1 U6 Z% g( _! {end
7 L* j9 S1 t% V$ x& x. b
$ t4 O  T& K2 d7 Mto setup-turtles & P8 W* ^# o1 A$ O( T
set shape "person"
: ]8 O6 a4 `/ isetxy random-xcor random-ycor! R+ ^$ o0 U5 M$ y/ T5 R) u! q
set trade-record-one []2 n' ?; d+ X& z- e, P5 T

5 Y2 b8 u' N5 v% r/ I& Qset trade-record-all n-values people [(list (? + 1) 0 0)]   U( g  P5 w3 L: y8 m

4 ?# Q- B% B5 ?set trade-record-current []  l+ T1 l7 \. f
set credibility-receive []. M. |! k9 W  m5 ?  p" U
set local-reputation 0.5
7 Y8 o% O7 ]; ?4 Bset neighbor-total 0; g5 H' v* ^0 q6 F# l; ?. z
set trade-times-total 0
9 _$ ?/ G0 H% @, Mset trade-money-total 0
% y- u' w, [/ N& Gset customer nobody
% [  l: @, a) C- zset credibility-all n-values people [creat-credibility]
! w' k7 e" }9 _4 Rset credibility n-values people [-1]
% X/ ^; b- C2 x& M: ?: }. d5 \get-color% ~1 w- u1 `+ h8 Q5 h
5 X& I# h$ x, L$ k0 m% h! N
end1 D7 c& R6 y( G

% y& k2 _" C' Y0 @4 P4 k" Rto-report creat-credibility* y  A4 Y/ F* K. D8 Z6 r
report n-values people [0.5]
! l8 _: A# z' q8 |3 s/ |end7 R8 l1 R0 G+ A

  M% n( e2 i* Ato setup-plots
- p$ i7 o( o, Y2 o- P& |
$ W% w2 O# t1 Y# b+ Rset xmax 30
) c: K% h9 R$ d, G% T( {7 ^& o' \
6 n2 g) X1 {6 |: b5 I8 t
set ymax 1.0

! N, B# A- y0 x- P8 `
! u5 f' I% Q6 q" v$ {& Mclear-all-plots

' h$ X) [, \( v* ~, {) b9 h/ z8 q0 `
setup-plot1

- a7 o/ [# Y4 c9 d9 I6 K
9 R+ c2 t: j0 A1 R4 l( Asetup-plot2

; p. u" t( ]) _- C/ i. f' A) \( U( U6 h4 u, u/ @1 X! _
setup-plot3
# E6 c( H' O/ j
end
6 q0 G2 v6 C2 h  A4 j9 ?
- Q- t/ t8 P1 O: d) c( ~;;run time procedures
8 H3 n/ w1 p% `% e/ ~7 e
% y: i0 F8 r5 o" X; j6 {0 wto go1 J9 g) o* D6 M

& d2 R* r9 z5 x/ }; {# }8 cask turtles [do-business]
. ?% H$ C" Z9 e
end
" l" X! `0 M6 f" `
0 k5 e7 C  o' L$ Z' E( B( Cto do-business 5 y7 R* k6 I! ~+ T1 S) i# c0 Q
2 D9 M/ B  v. P. }2 ?& c0 ?+ m4 }3 n
5 V: o4 w' \/ D* p1 F: }
rt random 360

+ Y/ i  y* _: f( _) p1 h; j
! H+ S" O3 D: f" S5 u( y5 lfd 1

9 r' O9 q: C. p  a- j  Q) o0 s
. j" `3 k# _8 sifelse(other turtles-here != nobody)[
, w' }; \# ?1 Y2 [/ H
6 v$ `  j' r; r2 _
set customer one-of other turtles-here

4 C3 ~6 W4 H* O; q5 \' x
' \9 C9 R6 Q" s" K3 ];; set [customer] of customer myself
' g( E. d7 E# H" T$ l1 F
" S; s5 S: b. U9 {# U( ]! `: y
set [trade-record-one] of self item (([who] of customer) - 1); M3 X6 {4 _8 S
[trade-record-all]of self$ [, j( ]- B$ U! e3 \9 |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 L# h$ _0 e: D4 c) x0 C
' s& C* ]) z* }, J
set [trade-record-one] of customer item (([who] of self) - 1)
) B" x0 ~& {/ ]9 O* C8 J! Y[trade-record-all]of customer
& E2 g1 i3 m8 I* y# g

4 o, Y, [: X& f) X+ e0 t( Pset [trade-record-one-len] of self length [trade-record-one] of self
0 E0 W$ R; K# b7 c7 G: g& P1 I

/ W8 _3 }! b# aset trade-record-current( list (timer) (random money-upper-limit))

, |0 P1 p; l' @' k/ S, q0 [% X8 E! A4 d) G. m! T
ask self [do-trust]
! K2 f5 X; T8 @;;
先求ij的信任度  ]) ~: d' N% i4 [7 e. C% J) Z5 T

4 N) p0 v6 S* Uif ([trust-ok] of self)! R! _) i! o0 g" @9 ]* Y7 o/ G
;;
根据ij的信任度来决定是否与j进行交易[
/ z7 |$ R+ @& P0 l; ~6 ^% T8 Rask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself  h$ ]" I: R  U

/ K1 Y8 @7 `- ?! h- m5 X[
6 Z+ O9 o3 W; F5 D- |
+ l1 [7 a8 W$ W* N
do-trade
% g# Y0 r! K! h
" z0 B/ g* Z  b% q, H7 d7 h$ m5 a9 n
update-credibility-ijl
6 s- Z. x+ W, A/ `

1 @9 ?8 Q  i# U' C4 s9 _update-credibility-list' M1 ]& l6 D9 c3 t2 o: M
5 h: |' N; ~7 r& m# j

& t' w6 i( R  W( f8 Tupdate-global-reputation-list

6 d: ]; {, x" v/ [2 ?7 x$ ]/ v- K, }1 ?# y; Q
poll-class
! B3 }' r3 m  m% T4 [
- b  w! M% d7 O! A' c
get-color

# n( J2 O7 C' _8 q
# T0 m3 n, \8 O3 I0 m. c]]
, s* ]9 j9 D0 c% y% U% j# B; O$ y4 r1 c- p7 T* l# ?  Z
;;
如果所得的信任度满足条件,则进行交易, _3 z" p8 `/ w6 k! s

# R; c3 a$ H8 _. p2 {( V[

, L; V  V/ \+ g8 W6 i$ {$ |
* H7 N; ^1 J4 K8 rrt random 360

, v) W- K, F+ P8 \' w" r  N3 c
0 @1 D- x( ]* j; r, j2 mfd 1
1 ^0 o. A- J" n/ @
  l, m. x8 L" [' u6 `2 c2 X; H
]
. _8 {9 I* s, v5 q. K6 Q1 [" c
4 _& H3 [2 F$ l% v
end
3 Y/ E  E: V8 P2 ~# {6 w
; r7 X% u8 ?+ x- M" \
to do-trust / c5 Y1 [0 R# r+ ?
set trust-ok False' M1 x5 ]5 U. r2 _& C2 A0 [' P6 B

, w  u4 h. w3 D3 v, D9 p
) r' \! l) ~/ C0 x; t
let max-trade-times 08 h" p4 A4 D! d* C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
$ d# ]" j5 Z% W4 H3 n! ylet max-trade-money 0$ P' B% f3 K; J- Y" L+ |
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# G& H; J8 [4 v. @
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  R- E2 k. ]+ M* H4 L
. P5 {( }, Y0 p6 U$ G/ e& c

0 q1 q7 i. [# s& ~" k' {' jget-global-proportion1 s4 i' g0 ]) \  @1 E
let trust-value
( k5 {9 v/ c0 U4 ~7 g0 slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 x& v* S& V6 X( T7 k* c7 a
if(trust-value > trade-trust-value)8 }: L) }/ q/ a5 T+ k  ~
[set trust-ok true]7 a1 B9 @1 J' e  j/ |& X/ D# C
end
) v7 A4 F/ A# P. ]$ u
) }+ T" j6 S5 N# h6 c  O* N' Sto get-global-proportion
. T& i7 E" H) O) j2 wifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 _2 l+ f4 }2 c[set global-proportion 0]; J1 }' A& R/ c9 q* ?
[let i 0& p& C! _8 f5 `8 r1 }) z- ]5 L% p
let sum-money 0
/ @& j1 Q. @; Uwhile[ i < people]
' X8 o. a) F* _" }( d! I* T* m[2 E) `! z% V$ g' g" U. C
if( length (item i. \8 M, S8 L3 |" M1 Q
[trade-record-all] of customer) > 3 )

; p+ D) q- d2 j# z[5 o5 Q7 N8 P# O: l* S
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
+ @+ T- B4 V2 d# a! n3 ^( _1 B. H]
7 B$ |2 \! @8 d+ F, ?$ S]: \* H$ k, w. E. j( Q+ r$ A
let j 0
4 n: G/ ?% w. v# Hlet note 0- S1 W( z0 @0 r- i" k
while[ j < people]0 Q4 V2 Z9 G. _0 N. l$ \! w1 D
[
" a" V+ g# R- z/ \if( length (item i* j+ I! v2 E# F" B& q4 }
[trade-record-all] of customer) > 3 )
( I: k* ~- r6 G, ]1 R2 X% r  \
[: _( |* l- W- ?( Z5 E5 j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% ], p3 O3 {: H2 t& Z% u+ X[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 `' t! y/ ~& d+ ]6 v
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& j, y, M. z8 l% J+ m]1 P+ A9 _; S% A: {+ H& W/ H, W
]
$ W5 l/ E  S# V, r$ eset global-proportion note" @# ]( A0 @6 d3 q, x
]
) f5 L6 B' d! r1 v# Vend
% z( g( @+ M* S. l( V$ U0 p0 a5 |( ?' s7 x, \/ l9 `8 q: O
to do-trade  U# u- N* j$ m0 s: a
;;
这个过程实际上是给双方作出评价的过程# h+ q  F: t" R1 }  [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价/ {- h1 s& x- I/ ?* m& D  n: y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价3 A& \6 E( s! g
set trade-record-current lput(timer) trade-record-current7 Y4 `! ^( L* ^
;;
评价时间4 ~) Q# j3 o; ~& N" j% ?
ask myself [
4 k6 F* L, U4 |+ R  a/ eupdate-local-reputation6 V9 G) r/ X3 l) k5 \9 u
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ v4 |  Q' F% S/ a  d5 t( }]
* E* J0 l+ r  \- ^  ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( S8 {9 H0 H) b* ~9 w" n;;
将此次交易的记录加入到trade-record-one$ H: a7 o8 w3 b! m0 J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* M9 C6 e* W" M2 F( Hlet note (item 2 trade-record-current )
7 A( {  L: ?9 T5 j& Aset trade-record-current3 G/ P  h9 v# G
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ f/ _- p! ?  D
set trade-record-current# Z7 c0 `% q. @
(replace-item 3 trade-record-current note): \4 ?' [. M' T9 W3 P. i
# D) e8 N5 G* `: D0 t' o
7 M# a9 h# p3 }" Z8 T3 R2 U
ask customer [
5 t  Q/ g$ n; ~3 v* b- v# B$ p3 `update-local-reputation
. K& V" _! w( |5 S2 ~5 jset trade-record-current
- ]/ E' ~3 s& `3 ?4 Z(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 y. U+ M* T# u& N& I4 u4 ?; M
]
8 S9 {$ I$ b7 c3 [: e6 F) _
& `& \+ x' Z4 T) _6 d- b$ p

' O: Z. l& l1 L* p/ Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ |$ n5 \" X7 p+ c) t! t' `
6 ]/ H, u/ g, Y! ]/ y- I: S
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ }( H1 F4 `5 D) Y0 u! X$ j
;;
将此次交易的记录加入到customertrade-record-all9 a* y% c9 m% g9 g6 ?; G
end" Q& V7 c. o9 \2 v1 v! D
+ `* F: h2 h! E2 \
to update-local-reputation
! e/ c; G. p( u8 v; s8 g. O8 dset [trade-record-one-len] of myself length [trade-record-one] of myself
( [8 g# d: }/ W# F+ W9 g( y7 t* P) G' s2 p
& d9 j7 j2 V1 F% d
;;if [trade-record-one-len] of myself > 3

& y1 X: k$ i( ~$ F# Vupdate-neighbor-total
* y8 z0 T, e: t! \" q% E;;
更新邻居节点的数目,在此进行
) p# @' k. b3 V6 B! w0 r! G0 ylet i 3  k# x, L* ?. [' w1 a
let sum-time 0
- D3 e1 ?* h: C1 q& E* B; _/ [while[i < [trade-record-one-len] of myself]$ _1 T0 G, a& n" r
[+ F: P) c% s9 E# B" d; r/ A
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
) i8 e$ {/ h9 E& f0 O5 dset i5 w. t- D' E- }
( i + 1)

8 b' f# W+ a+ s7 e1 B]4 S1 b) F* P5 P5 O
let j 3
5 o. l6 P, g) W/ _- Q  Rlet sum-money 0, z* i! Q; B* {% \% H* d
while[j < [trade-record-one-len] of myself]
4 W2 L- I& _) @" ?9 }[. @3 \8 u$ z! S: R- ^6 a
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)( {8 A0 U2 w8 W  R& [" X; v9 R
set j: Q# z$ T. x3 H  f: g: }1 U$ T4 L! L! G
( j + 1)

( a; o; e7 j# I. g9 ~2 Y) A]
" u7 K5 w  g+ M3 H4 e/ e' C- u! Mlet k 3
( h9 w# D6 L) l* _let power 0
8 u  x7 M1 W& H) Zlet local 08 d1 v0 |7 `" T  Y
while [k <[trade-record-one-len] of myself]
; L6 f& F* f2 y) Y- c4 D[( h1 v  [' u% c( e: |5 O. V7 G1 Z
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) ) A- ~$ ^3 t! u
set k (k + 1)
& u* Q8 `/ W  h: w2 |2 S. B: d]
- r( ]7 H! J- B5 E- w" A( aset [local-reputation] of myself (local)
5 D6 ~8 [3 H7 }( X. `end
: x1 {8 V9 P: l- G" w8 X# g) y- z( `2 B8 H' v5 I
to update-neighbor-total- z3 o. [6 x7 y6 e

% f; ]* \5 G* b& _9 Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 ?+ e& {* ~1 U4 O

! U+ B: o/ E: I1 m0 i  L1 b
( H: ?! n  c+ P8 q
end
3 B0 I* u9 |2 L" X
$ p. F$ D0 l6 D/ dto update-credibility-ijl 0 d3 d. R9 b8 ?5 D  N7 u8 \& }

& @* h; j+ `: r3 e! c- 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。9 b" N) ?& j2 u
let l 0
3 |9 D1 U" B) xwhile[ l < people ]
# x5 [  J0 ~4 S;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
8 M5 s9 p* G1 _[! h3 w. t- w% b% g0 ?7 H/ w
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 Q0 e- Y) O3 b7 ]% dif (trade-record-one-j-l-len > 3)
' m. S3 u5 T4 i0 p! 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
0 `: H3 {, m2 L  ^* [  y" Y- @let i 3* ?9 b# S1 N: }: I) W
let sum-time 0
5 u$ p3 ?" U/ y& d2 swhile[i < trade-record-one-len]
0 {3 h- U% `0 E3 x% [  o$ v[
' b4 z1 k0 B. L( r" {% }1 Oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )5 k; U& }" K. o8 V6 e
set i
6 ^! w# o$ V3 O8 j' R+ K( i + 1)
: h7 y" H5 t0 P: A
]
4 Y2 N: l. J) H4 e: qlet credibility-i-j-l 0, u+ x% h) E0 ~/ T. C: u4 o! _: b3 l
;;i
评价(jjl的评价)' r5 d: G/ y  R5 [! ^$ \
let j 3
% i$ S* u& {; |9 T% l, c, Jlet k 40 y: k8 m' L0 i
while[j < trade-record-one-len]
- ~9 U6 ^7 Y' s- s$ o) M) j  P2 ~( w[
& k( m: r* T) @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
$ O" i1 O! F$ T3 u7 M) Fset 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)1 k$ e$ N  c. r2 {& f* b0 z( D6 s2 U# E
set j
) N9 ^4 V4 B5 Q( b( j + 1)

. ~1 n* h9 q6 H! O6 G- ^. }# W]
9 [/ b2 ~! M  aset [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 ))
: x6 h8 i4 O; R. o5 |+ H' D* ]0 D" c6 h# E: Z0 _/ w6 ]

/ U9 e. B9 K7 R+ A- Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 B4 Z2 F* Q8 `: g;;
及时更新il的评价质量的评价3 j$ f. f5 y# [3 A: h% d% N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]5 {; q7 o& O5 z2 m* N
set l (l + 1)
+ s+ m4 L/ _* ^]- N6 s3 C& T. u
end' ?. ]) x8 M/ }, L. }
6 L# `1 b$ q0 O* P5 d! [9 i) m1 N
to update-credibility-list8 Q7 T1 ]( l/ ], F/ o
let i 00 k6 f  l' U$ _: L$ i
while[i < people]
# w! m4 @8 A4 s8 e[5 x! V9 D& B+ \9 ?# l$ ~" R
let j 0
. o# m/ Q" y) V. ?! X7 g6 H( [let note 0
) M* b' d7 g$ p1 n) V( xlet k 09 G+ z9 P6 @5 C* e
;;
计作出过评价的邻居节点的数目( ?6 W( H3 `- G; S0 p8 d' t( I
while[j < people]
& R0 f9 Q& z+ x8 b8 N' u3 b[
8 _5 c+ P/ c; e% z5 iif (item j( [credibility] of turtle (i + 1)) != -1); z9 q9 ~2 c+ J& N
;;
判断是否给本turtle的评价质量做出过评价的节点
9 H8 @( p9 a0 ?* y5 A, V[set note (note + item j ([credibility]of turtle (i + 1)))
6 R. L0 w3 ]- {( S+ F" m;;*(exp (-(people - 2)))/(people - 2))]

' Z" V8 L+ R$ m" uset k (k + 1)" [" j, Q- ^9 \
]
! @6 h9 S! N  b) uset j (j + 1)9 U+ T- W( J, V9 ^! x0 w
]5 X* C7 d! A' O# \
set note (note *(exp (- (1 / k)))/ k)  x) |/ \0 w* I4 a6 ?2 D4 D3 V
set credibility-list (replace-item i credibility-list note)0 p" P7 Z, E9 i, ~
set i (i + 1)8 _7 f: v" z8 {* W: J
]2 J  {/ `3 Y5 y+ R9 K* ]7 ?' a
end
6 q  T8 D2 X7 ?
  [  C) D: F2 J1 {- mto update-global-reputation-list
" w' F6 u0 n+ ^+ Ilet j 0
+ M: H' x3 H% K; _- U( lwhile[j < people]
! n9 Y/ R, d3 a4 b' ]6 P[, y1 Q3 }/ U0 k- U  F
let new 0
7 m1 A0 {0 u; M2 u: c: ^. c;;
暂存新的一个全局声誉2 X9 j7 g0 u4 `+ |
let i 0
/ Z7 a; I% h3 E: Ulet sum-money 0
  R4 P& K2 U3 y/ H: Klet credibility-money 0
2 Q' t+ t1 I" swhile [i < people]
" K1 H9 @( J% _! Q[
( U0 y) C( A7 o' zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 W& Z3 a+ }7 z8 }# nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, t; z) _* |' }% E$ Y' B, eset i (i + 1)$ w- h! p# A: ?3 r0 }
]8 }, B% Z2 f! c6 Y
let k 02 M% |/ ~. l' y8 \
let new1 0/ Z7 v1 G5 W7 K( F
while [k < people]/ j) j4 ]* M$ m7 p/ Z1 I4 I) {
[
% K1 g( s0 u7 Lset 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)0 N3 A: a6 y9 N$ }0 z; f9 r- L: V# b
set k (k + 1)
8 N5 j  D7 @/ M; A  ~0 []
- s% W8 y0 V( Y* w. U/ f% d7 ]7 A, Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 S2 S* D- J5 d4 Y# l6 b
set global-reputation-list (replace-item j global-reputation-list new)
0 Z1 S' n% q- I% |, ?% Bset j (j + 1)) y" g+ z3 b$ Z6 C6 t; z' @3 z
]3 h: \. O! Y- j2 u
end
, P8 j# r" y: m+ t: A% r5 h+ ~' `: r- m: D" N

# P6 u  a; w+ w# F8 g7 ~+ r+ X: k: r' J& f; O* F" a5 r' _
to get-color
+ O: C! O* }% B; Q: L6 K0 ]6 h, E4 D, S' F
set color blue
. N  f& y0 Y" g* d) I
end
6 M- e7 J, G9 ^% u( e, G; I) x5 X" z9 @: b
to poll-class
9 |6 E' \* ]- Y$ Dend
. c/ D: J" ?* H6 m" Z2 b- |3 K0 x8 ~6 |: M7 {
to setup-plot1
; k% G( C7 E' I8 q" C4 I) A  q; _& A7 n& `$ d, w6 A$ W
set-current-plot "Trends-of-Local-reputation"
- A1 {, T: _, C0 u' U4 M; [# G

7 r9 E7 q. K! i) |1 M/ ]3 m- Wset-plot-x-range 0 xmax

: \5 K/ |9 c8 c) m6 W! G& l
" H- ~# r# A( F5 l8 lset-plot-y-range 0.0 ymax
5 E/ l) V5 u  [
end. K5 d; k7 E, K1 _- I
  l" T9 |5 {6 c* H, i$ r# K6 K
to setup-plot26 c# z! z$ k; d* s7 m" N( p; r

, i8 z. b' I6 k! Mset-current-plot "Trends-of-global-reputation"

" e& K* \9 ]* g
! l3 \+ R' X; P, c! l. K# `! qset-plot-x-range 0 xmax
- Z' S8 V* D8 E( T2 I* C& V6 J
2 O# U7 J0 i4 ^7 j9 m
set-plot-y-range 0.0 ymax
3 u- e$ O. u8 W) s. W1 L5 |+ E4 g) ^
end
7 v& ?7 k% a2 S0 g5 I+ P( _! M# T1 Z2 C  J
to setup-plot33 j* U' V, ?% ]( p6 a# u: K

6 F* D& k! l# E9 k4 B; D, Mset-current-plot "Trends-of-credibility"

+ \9 D: w/ a- N7 I/ G; u  |
# l* T' Z% G' ~. b4 [set-plot-x-range 0 xmax

" u6 j7 |. }" f+ K- h7 i  H# I0 c6 t4 p3 T7 e
set-plot-y-range 0.0 ymax

6 p4 w4 e/ j$ ~end$ y1 Z  U8 h$ Q$ D% h+ G& M
! u: O) |# p; ~' ?4 v+ N
to do-plots0 Q( x. R' |$ F) {% N
set-current-plot "Trends-of-Local-reputation"% I' s8 ]6 ?8 k% _  {
set-current-plot-pen "Honest service"
3 B& P4 ]7 G' A. ^$ rend
8 B* P* f/ y* H$ b6 M$ k! {' v  }# ~1 c4 ?! s4 s1 d1 P
[ 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.9 j% p8 U/ r$ E6 Z) u1 j

7 q1 V2 e. v3 @, Z0 D6 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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