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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:+ A( q/ P, L5 }2 J; j- K+ y6 U
to do-business 6 y7 K6 u1 M! o! E) t
rt random 3600 u% S4 l, ^$ `* q  Z$ @3 v
fd 1
1 x- X( h0 z! P, [4 h ifelse(other turtles-here != nobody)[
6 I" m) W0 v. x# Q. a5 _# S   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.
( J7 J- U& u+ S( n' ~5 b   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " b; e9 z: t! |  h! j
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- e+ n' |" T# ]. x) U
   set [trade-record-one-len] of self length [trade-record-one] of self
2 Y5 {: i7 t# I" N# B% s   set trade-record-current( list (timer) (random money-upper-limit)), \4 L2 C9 i! P8 l& }) Q" U4 E
' z+ I" f1 u: U4 D7 l' N
问题的提示如下:
6 W. }1 H. z6 d6 D: T5 D
+ h5 o; g: h/ ~" v  Jerror while turtle 50 running OF in procedure DO-BUSINESS& Z: u4 w2 L) m" c3 z+ m4 [
  called by procedure GO0 Y) Q8 Z! ]/ ^
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. w6 k) h- D; f1 z5 r
(halted running of go)
7 {1 Q3 @, o; B. m& a
- H- e' I8 t! e" l. H  V' P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~~
. y% t- Y. u8 Q6 [& w4 j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0 k5 z: b2 T9 N7 S: \
globals[
1 o3 ?+ K7 f( ]5 E' D7 ?xmax5 U1 V( m% \8 J0 T/ W
ymax
" n& ]% r& j0 L  ^% J7 xglobal-reputation-list! a3 D* \+ u# X2 ~& F; ]
$ R8 V6 o4 ]1 }! G3 e+ l$ j
;;
每一个turtle的全局声誉都存在此LIST$ g2 f1 ]% |6 Z, ]! M/ c" e
credibility-list$ @' w6 L5 ]" F3 O; b
;;
每一个turtle的评价可信度
6 R9 m# ]1 k7 H# x9 [- q- Z9 r" qhonest-service4 e" S  r& K  y7 ^
unhonest-service7 @8 ?+ r6 `$ e! ]
oscillation  Z/ k0 j) r2 p( [, T
rand-dynamic
; H! k5 B1 e) o, p8 d% Q]9 V: a/ n  H2 V! p/ \
1 }# v! x. C& b3 A+ J
turtles-own[: O: `. l+ A% A; }5 A+ B
trade-record-all
+ U5 a- M  E0 r;;a list of lists,
trade-record-one组成7 i) P3 ?: k, _7 {  X/ f6 l
trade-record-one
5 m) H, }' S5 k! R( _9 [5 y;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 {& u) ^! T# p2 Z0 r9 d" n- D& Z
+ @+ ?" S7 k2 S: @+ e' p) N;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]' h1 l2 Y3 x1 Q5 p
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]2 z- K2 k  n' }8 ^1 h
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list6 e7 `" O* M6 C: W
neighbor-total% ^, t7 J1 U7 L9 n! k. c' G
;;
记录该turtle的邻居节点的数目; \$ @1 f( }0 ]& [" F
trade-time
7 q, D1 Z1 n3 C0 u( T! b7 ?;;
当前发生交易的turtle的交易时间4 e: R# D- K1 e1 e9 j5 q( R. V; ]
appraise-give
3 l6 t. ~$ B& D: G;;
当前发生交易时给出的评价
; e# x( \7 ^, `: P# g# S& F4 {7 rappraise-receive
7 o5 x: U4 }$ m  q6 P;;
当前发生交易时收到的评价8 n0 |; l% l6 ~: N7 d+ N7 Q+ w. {, |
appraise-time
5 j+ `& u; }! @. z;;
当前发生交易时的评价时间
$ `6 e1 S( N8 llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 B6 }" U" u; ~3 n$ Y" \trade-times-total0 t" ]. d& {  N2 p7 _/ V
;;
与当前turtle的交易总次数
$ F! L( z8 `$ }0 {5 }trade-money-total
+ Q- i) k& r: p- i2 j  P) q" f;;
与当前turtle的交易总金额. e* p% n$ B- Q
local-reputation
2 u: H! y+ v6 E# [global-reputation
$ U. y" G$ f1 {9 Ccredibility" D% I' V/ }5 b4 O5 W& u
;;
评价可信度,每次交易后都需要更新8 m* W: j0 ^" s& D( D5 z0 m
credibility-all
  h( L" M  O# }. n% H/ |2 l2 p$ \;;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
5 u' ]  d) F7 I! [1 z) I8 g- {5 m
; B3 Z% B+ I! P% A;;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
1 F2 x) \% G7 `credibility-one
8 }) ?! T5 Q7 ?4 }' g;;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
. I8 c$ E  c  oglobal-proportion
+ \. L% R8 G( a  m4 Acustomer% ?6 z: e* `6 L4 S- y# B3 T
customer-no9 F! Z, `3 W/ G2 e5 T! C; B2 q3 n. a
trust-ok/ F4 i$ i) l  [* ]6 K. r8 R
trade-record-one-len;;trade-record-one的长度' q" t. L1 H. ~4 ], \# S$ s$ C5 W
], B" n9 l" ~* k$ V: t& u
, M$ @: d! m* H
;;setup procedure
. K, q! I. K. Z. B) A* w
! Y& ?$ E5 o; r- w+ fto setup( N& c, ?4 h/ l7 y# Y; O

. y% i9 R- |6 ^# |ca

( @& O6 V* @+ ?: d! }& ?3 a! u3 ^) H4 J9 j( k8 V
initialize-settings

9 n  W% }2 `8 l& d0 i9 ?
9 o$ \6 k9 V% F7 Y' i9 ^' ]6 Ycrt people [setup-turtles]

6 U" i. w' o, M2 a# h4 i
' b: F8 I+ U! Creset-timer
$ @, l* x+ t% I% V( u) T

' Q2 G4 Y- ^- d8 U0 l1 b4 V( I6 v: _5 _poll-class

; n/ u5 M/ n5 s9 \
, y. r" F6 r( K' }setup-plots

  O2 j$ E' u; k. |1 L
# F8 S; \5 N4 g. ydo-plots

( F% K3 h2 l5 c  `1 R7 v, H; e& dend) z; C# u  k6 `0 Z' S
7 @6 \9 ^1 \3 y
to initialize-settings. r- P, q  v  M1 d

2 u: ], k- p/ P( d. b7 R6 Rset global-reputation-list []

$ a$ f4 f1 {4 T# y- G# m  d+ P% d. c- H
set credibility-list n-values people [0.5]

8 g9 p& s6 A3 _* e, Y
7 O9 ^  ~5 @# n+ u7 P3 [5 W! O5 \, Cset honest-service 0
( y) @- T% h$ j* G, t

0 b# L  b: S5 N# ^8 W3 _3 q0 o# Qset unhonest-service 0

2 x( E# m1 n# V4 {3 O
$ ^8 s5 Y/ w  L. W& ?; Xset oscillation 0
! F; }! R" p  L4 y5 W

( w) F+ ]3 j, `% j3 Kset rand-dynamic 0
  J& s8 N) V3 n8 f* o
end+ u1 `- i: H) }/ C0 G1 ?
3 ^" v; r9 w$ O  y. f) x4 p
to setup-turtles / ]/ p' m/ y( j% g
set shape "person"
$ x) r5 w4 L( \$ R7 B' e' Asetxy random-xcor random-ycor
9 o: @( `% O: Z. Qset trade-record-one []
2 u$ J- b6 d) p2 t
. w8 n6 n) m4 J0 S; Y
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 d$ `# U/ I5 D. C2 m
4 ]3 T$ H" l2 f( ^# A# W# ?6 g
set trade-record-current []
. s& M' q1 B/ m- H$ V( Z! x) xset credibility-receive []5 C1 ~& P! ~% L) T
set local-reputation 0.5* A8 t& T6 {$ T$ Q9 r( T
set neighbor-total 0. Y! J' f0 }7 Y# w
set trade-times-total 0
4 Z5 F3 Z* z% ~2 e2 yset trade-money-total 0
" \: F2 y* p& a7 X5 e$ c5 G5 mset customer nobody
- B3 O2 E) I# l7 E5 z8 g/ fset credibility-all n-values people [creat-credibility]% E. ]! Z# B- h" p
set credibility n-values people [-1]; q' o7 H, k2 V% Y
get-color7 r1 P. i; \3 ~3 W' l

; C" V  u6 e; A0 send
9 p7 {8 Y7 `$ O* c% [  A' m2 h$ V4 O% d9 C  z8 c  p
to-report creat-credibility
% h% k8 C0 u# i+ J6 b4 `, Rreport n-values people [0.5]- o2 ^' C/ E7 b/ J4 K2 L( E4 v: R* x
end' U1 l: K' R) u- d  H+ x$ p* L+ Z

) S) X/ G' z& m- M0 Kto setup-plots
. g: I+ h( [6 y% G) B5 }  B( e1 z( c
set xmax 30
9 |1 V2 P( P) V$ B; W" t% H6 y

6 ], r" g! I, @" j" jset ymax 1.0
# t6 l4 m' Z: F+ O3 z

2 j% ]0 L5 p  f( r* z. wclear-all-plots

, g' U8 t. ~( [
5 T' [! d+ C) |: L3 m' ?) t5 n5 Esetup-plot1

  S9 N% ?: i: {- K* o, y0 d. C: @  w6 L4 |2 H
setup-plot2

, W& e* j: Y, P( Z, r: ^
! Y4 W1 t- R3 j8 I+ C( usetup-plot3
, w7 r/ O% \! p0 t* Y6 c2 m. |
end
' E# ]9 }9 m" y# |1 v7 C
0 v8 o6 y( t! J  l  f+ ~2 U5 `0 z;;run time procedures, ^6 u5 ^# V$ e6 H. K
- Z, _' K' V8 I1 x' W3 I/ o  @+ e5 I
to go
2 V0 p0 O& x& `; P0 f' X/ Q4 k2 b, [- E9 t+ I& m8 D% I
ask turtles [do-business]
  }5 m8 z! A7 E+ n" r8 J
end" U2 K* l. j4 d. g: @" A

4 ~, H6 u5 k: Y, z; E- R8 lto do-business   D6 |3 T% P2 H

2 Y* |; f' s, a6 D' Y. z
! v8 D+ C6 S" N. \5 Ort random 360

- c' i+ \; l7 x& |/ U, `: _2 l8 F- X0 u. j! A; ^
fd 1
1 c! U; g8 T! A2 s, w/ w7 {

% V5 O$ S* Z% B2 {, j1 Rifelse(other turtles-here != nobody)[

: Z: _7 R7 d  x) ?/ ~1 P. |8 U$ n" c7 a: [5 H
set customer one-of other turtles-here
4 X6 a. r- ]9 y3 G1 K$ P
( ~# y7 N! h* |1 f+ u* T
;; set [customer] of customer myself

& j& k+ q' x! C: v& H+ I
( p& |7 u' P9 S3 K* {* }( zset [trade-record-one] of self item (([who] of customer) - 1)6 v% a; G4 G( P% I$ Q, t
[trade-record-all]of self
7 m4 J* j1 @/ {6 x;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

& C" G: N: d. `) U! ?  @
7 x5 J9 f! [7 n2 Z! qset [trade-record-one] of customer item (([who] of self) - 1)
' G* T/ \! ^- {5 P- ]4 Q( }4 u[trade-record-all]of customer

$ |( \2 T# o+ p3 A/ h; D: P
/ `# ~0 b3 e0 R4 p! P* L6 ~set [trade-record-one-len] of self length [trade-record-one] of self
0 p4 I1 L9 A# F% L3 O5 t; W
$ Q% H+ ^' K6 V/ T2 b
set trade-record-current( list (timer) (random money-upper-limit))

& }0 A2 J& \" S) |6 `: Z. }0 K; v1 \' C5 T2 D5 y
ask self [do-trust]9 @* U" _6 f% B; j# t
;;
先求ij的信任度
. w! j% G# ]( k9 j1 A
! d) A5 a5 `: F0 S6 r0 _& _if ([trust-ok] of self)
% H/ T9 G. S7 ~;;
根据ij的信任度来决定是否与j进行交易[0 E- w( v" l# r- u1 o
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself5 y4 |; z0 Y0 u( b2 ?. I- J- Q/ x
: W3 |' b1 W# z, f( D
[
1 `4 z( c7 R$ A7 Q8 j2 \
5 L" e8 @$ q0 I* e! V( H- A/ U
do-trade
* e# l, n; k( ^6 }5 F$ k- G

  A8 p! ?+ X5 m0 e" B9 `update-credibility-ijl
6 ^6 j; G& N7 g+ u
# H" k9 a" {7 b# S
update-credibility-list& {, b  Y  T4 u/ X% `+ v* U
# \$ C+ x; S& i% ^9 O6 @8 g2 a/ l
: h5 K: N9 T9 I0 `: |
update-global-reputation-list
5 b1 }  _' Q# V: `

) O, j4 p( i; wpoll-class
6 g% O, Z7 T) Y3 L1 }) r

! F4 i% Y: g/ W  j/ |, P+ qget-color
$ S# A: G+ P: f: i; K( r5 J& P

7 m) z& i" w# y]]
; {$ ^% L5 S% J* L8 [# J+ F0 S# r# d: |
;;
如果所得的信任度满足条件,则进行交易
% G: p0 W0 Q* a$ Y9 Z: i/ g6 T  j+ u/ P. ^
[

' i; \5 i* p" B5 A4 c% @
9 h0 U3 V- ]+ i& ]: Z) ]rt random 360

, L* r; D, f; O2 k% b$ U5 Y* u& e0 f; m! P0 m
fd 1
6 O5 m1 r7 o" x1 W& g5 @

. x# {8 m( W0 [' q+ Q* {5 o]

5 {6 S3 q- h1 [2 f( U% u0 T& r- c$ C% o( K4 T% t1 [7 [; g
end
; o. ^1 a9 M9 o9 A) S

9 P- }: G* Q" E3 L7 D8 ]to do-trust & p. z- h( M5 Y+ Y, d. k5 x
set trust-ok False
8 ?9 V3 l& _- e* o  D
" }/ H; v# m# a. v/ ^. \* o  z7 C

2 A" F& @6 s1 ^. ?# ?. Qlet max-trade-times 0$ v2 [( F9 d% Y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( O, z1 c; S2 X" y% {
let max-trade-money 08 R/ ~- q6 A+ d% T% G* @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 S4 l' }5 `; v5 @4 l- I4 l" m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# a9 E) Q8 ^8 E5 _8 {+ p2 o
) ?- X" G( O& U* f, Q4 O- ]' d
; I' }5 W6 p5 q0 x
get-global-proportion
! Z, F3 O0 v2 N+ Elet trust-value
4 E+ \. r' l# ?4 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)
+ `  a6 x: t6 m, v
if(trust-value > trade-trust-value)$ S. w; o* n+ U9 @
[set trust-ok true]
3 Y. X) X2 x2 send/ c3 h( s/ a2 ~. z2 R5 j9 _
! ?& Z+ n0 }# k. {3 G
to get-global-proportion
. H; l( [  f1 [ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 y5 T& K6 }; ^7 r[set global-proportion 0]
/ [+ P2 ^" T7 o" ]" A4 @[let i 0
5 _6 P, Y' A% h. e& D% G3 N' _let sum-money 0
- F7 m0 K+ e0 L9 Xwhile[ i < people], i( k. i+ V! k2 p9 A
[
8 c# o0 K! S  |1 s. x. _# dif( length (item i  v3 \6 `1 ^% [. G8 k8 q: G
[trade-record-all] of customer) > 3 )
" V3 U$ }% Q; U4 @: `2 X) q
[
$ \( o1 L  O3 d( g% jset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& h; K4 s8 h" y  P8 d% e]- ~. R7 d/ n- z# `- V9 i4 |$ v
]
' y6 F' |' C2 X: |5 B3 K  alet j 0
0 r1 _9 r4 x- y6 ~let note 0/ m9 P7 a, ?2 W& J- m0 g! c1 M; F
while[ j < people]( Q; M) q( H$ m3 J6 R0 t5 k
[& F# j: G3 L* V  _
if( length (item i8 h6 |- V6 a, y& _: s
[trade-record-all] of customer) > 3 )
! h* H9 G- r% v3 K1 Y
[1 G" t, E8 W7 C8 y: [
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ G$ q' y+ v4 x5 K# Z7 Z' {
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* Q! L; B' ]" u: L- S
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
2 K* r. A! Y* G: C: W2 z* y" V]8 ]& _0 F4 s. s9 V: ~, Z
]! r! M- J$ E' D! _8 z% k
set global-proportion note5 _% Z$ }- j, _. ^; Y5 B" N
]1 d' q6 [' c+ q, B" y# i8 L
end/ P% _: W7 @8 _  ^
/ ]& A6 c  F) Z
to do-trade$ O# ^/ `: I4 g8 M' ?& ^7 |; Y
;;
这个过程实际上是给双方作出评价的过程
; [  w( x, j5 T$ T; s4 S& L, gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- j. b% k; K" @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 t* T5 e" z) H. L' Y
set trade-record-current lput(timer) trade-record-current: m! l, W" e9 N; q+ l4 Z5 r3 z
;;
评价时间
* o5 J) Z7 Q; ~ask myself [& g0 H$ A3 E% m) v  I
update-local-reputation8 H/ r  g$ e4 V% H. o
set trade-record-current lput([local-reputation] of myself) trade-record-current
% J0 D6 L/ B* Y1 g6 b6 _( w+ ~]
, A" U8 I( y  \5 |+ Q% dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% B4 c- h& e: s/ k. O6 o;;
将此次交易的记录加入到trade-record-one( Q& L: X6 @" a' ]* d# J) q: B" U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
( g4 E# c' i2 x% Dlet note (item 2 trade-record-current )5 m! D+ A+ ~- q! h, q3 ?
set trade-record-current
! u! b2 r, U+ o8 N) d( T(replace-item 2 trade-record-current (item 3 trade-record-current))

0 j9 @5 G3 g( @9 n9 {: I& o3 {; Kset trade-record-current. N5 h1 F5 W. W7 x; z* E* q
(replace-item 3 trade-record-current note)
8 t. p. P3 G  \/ j8 Y# A% i* k5 B
' J+ O, w( B- G

$ h: s7 g+ q* |+ S' [ask customer [3 M* C9 U: T3 j6 K
update-local-reputation
+ X8 j3 T; X% O/ F0 ]5 f% Sset trade-record-current+ \5 X. S- R, l: K. m* Y" _! V1 S
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' S1 b: @- H1 F7 o6 R& E]& U7 n" `6 ?2 I4 P
, }( w+ h. |& Z8 ~* |5 a9 J# z

0 o: [( E* \# D5 cset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ t9 @' A3 a/ B7 M$ M

/ g9 T0 m# h7 a. B% j# F, v+ _set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
* M- b; c" D9 b2 f;;
将此次交易的记录加入到customertrade-record-all
9 r7 ~/ m3 n- }( b$ ~end0 D, k7 X) f0 K1 ^) |7 \, v
3 ~/ C! P5 m) l6 O
to update-local-reputation
" E+ a/ b. L. Q9 K/ w) Wset [trade-record-one-len] of myself length [trade-record-one] of myself
+ P4 i1 d, x* S4 i  _4 N# n* ~/ N8 N' }9 w4 n

& L+ I4 i0 |1 B. o1 o- f;;if [trade-record-one-len] of myself > 3

9 l9 e: E0 H- l" q% Nupdate-neighbor-total
! }. o' d! ~2 j;;
更新邻居节点的数目,在此进行8 a; T9 k6 ~: _1 i: u
let i 3% V/ O# z5 U  i& t( S. \
let sum-time 0: c% R- ~, s  @$ O
while[i < [trade-record-one-len] of myself]7 D$ _6 F1 K4 G0 V
[8 z* Y7 R0 G& B# T& Q  S
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; q+ T, C* B# w5 Gset i* l% }1 d5 o  F8 Y% m
( i + 1)

, W2 g/ K1 L6 T: []+ K! @) w5 g% H% J+ V
let j 3
' n, N( l. \9 y# \. y5 N3 o% a3 p3 wlet sum-money 0, O, [. l- f: I. j( \$ n, g
while[j < [trade-record-one-len] of myself]+ D0 I5 x' N( J
[
! D3 }4 N! G* uset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; n. }9 j. l, T/ t6 jset j
1 M# q8 i6 {+ l. P& p! p; k( j + 1)
' p+ v! V% W0 d: X$ ?
]
( e# P! r, u9 Z% ?" k& X3 `let k 3
$ h3 c) }! b1 ]0 elet power 0
) b& i& f/ n  b  r* v8 Zlet local 0' d! Q6 G$ W; l1 L: c
while [k <[trade-record-one-len] of myself]
0 \& p8 a( t- o3 r! \5 |, n# k+ C[+ H5 |5 y2 ?! O+ w' ~/ k
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) , R" o4 ?1 `1 R3 n
set k (k + 1)
4 Z( U% A7 O5 `- a. |% S]
  I8 ?% @7 Z5 P" V6 {set [local-reputation] of myself (local)
$ Z! i( z/ u, v$ p. v5 Z* hend1 A  p3 g/ a. V( L
: H9 _; U. m/ {! H. h  R1 X$ n/ k4 _
to update-neighbor-total2 J, X/ v& D, s

1 ^0 h  ?2 w- p  ?& u8 B. jif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% s5 l* b8 w4 n/ u1 W3 ?
2 u8 t  a7 o/ b  g9 c7 a7 H

+ k) Q' |/ N- g% i: J  bend  G, C& z* M1 c, s

. q" q& W: d2 ^: S& Wto update-credibility-ijl 8 @$ ~- \+ r/ [

# s1 U6 z1 I) I8 g, t;;
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。" }8 G( O9 q( v0 z
let l 0& f! S% ]7 a5 {& M- X
while[ l < people ]6 y0 [- g" t& l% Z# T
;;
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
; u/ l0 n+ p( \8 r7 m[. X0 W7 d& X$ [6 M, U; V9 [
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ G; H5 y$ Y( _/ e' F( u% R/ N: }  g1 w8 Yif (trade-record-one-j-l-len > 3)8 {/ M& Z: d! l+ J7 I# g
[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, {% n! b* L+ L. f6 V# a; O
let i 3
5 U8 V. Z8 ]# ^; T9 Alet sum-time 0  l" T$ G! R; v
while[i < trade-record-one-len]
4 b; o4 k  O. I: J) }! l[+ u2 v3 [( ^" f0 l, A
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
2 Q- t, O4 v$ t5 p/ yset i
' t( M5 T) _4 t: V( i + 1)

( D# A) j- Z. l/ X2 E' y# {]! z5 H) ]" P) T: Q
let credibility-i-j-l 0, `# O9 V4 y' ]
;;i
评价(jjl的评价)
/ g! k! ?2 d# u; W* Elet j 3$ E" |1 a! u3 m' Z8 V
let k 4
, \7 g( A' o* M' j6 C" B, Zwhile[j < trade-record-one-len]
9 @4 o* N+ A- ][! L  T  t6 y! C3 Q$ f/ z5 w- V
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
8 X: @& P+ H" `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 L5 z" i1 n; ~; k  p! ]1 L0 _9 x
set j
' |8 W( t& L2 U2 n( j + 1)
5 v5 K6 E, _* U9 c6 c
]
" S4 N1 R' x3 k, b, f2 uset [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 ))$ W, d3 o! P0 _

+ R7 A; C! ^; o% W! h. C

9 X( r* s7 l( h* P6 xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). k6 D) O9 Y* c$ p
;;
及时更新il的评价质量的评价8 g" W8 I; E0 @% {3 L) \
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
/ H" }% d4 V; a- X  aset l (l + 1)
6 T1 f% i) W/ i! L; H$ z/ t! C# i]4 m5 C8 E# P7 j: t
end" s4 [: E; J2 h, [+ L
- s5 Y3 y1 E0 G4 J( R9 c
to update-credibility-list. `. R) c: P, V1 J, \; \+ v0 P. G
let i 0" ]6 W' ~- X( u5 u: G" y4 ?
while[i < people]) [' \" J( F1 K& a0 W
[
5 _$ P5 Y6 F* i: Llet j 0
) h( @  e: ?& ^. {let note 0: Z& M1 V0 ~* }4 E& o
let k 0: L1 {; `% |# [7 V; R# j
;;
计作出过评价的邻居节点的数目
( _0 `' ^2 V9 P3 g& S6 G, \' Zwhile[j < people]
8 n7 E, ?$ g: d% o  Y[3 Y1 W$ N% T! G) E* L& C
if (item j( [credibility] of turtle (i + 1)) != -1): v) _+ a7 k, ]* O
;;
判断是否给本turtle的评价质量做出过评价的节点/ S# O0 c# V8 a1 Y4 s1 M4 V8 p  ?
[set note (note + item j ([credibility]of turtle (i + 1)))4 y' P9 G: B! K1 w1 l3 Y$ r8 a  y1 G
;;*(exp (-(people - 2)))/(people - 2))]
, L) P. F+ a. X; T
set k (k + 1)- |; ^1 o) R& ^5 }' Y: q& _  v8 j
]" \# }8 H$ x) @+ {* k9 [) e
set j (j + 1): T9 V8 m4 H* ?+ m- a1 H7 z" ?, L/ M
]
. @( g3 e% _1 Gset note (note *(exp (- (1 / k)))/ k)0 g$ b3 G$ J: K  g7 {- D% l
set credibility-list (replace-item i credibility-list note)
) d9 F2 Y# p. V$ T) Vset i (i + 1)
, ~" a% Q9 |: R1 f3 {, _]
8 f3 d% c" }: M( hend
' h- ^. Q! Z# e7 O) a
+ X/ k6 G& I5 C5 |to update-global-reputation-list
+ S6 c/ \% @: h7 ylet j 09 m, R. T1 J8 A9 t) @" K7 k2 z
while[j < people]
% S5 ~) _" G4 u6 T[
$ A: S) H( A& {- Q) g( Blet new 0+ Q& \5 ]) E9 c  B$ B
;;
暂存新的一个全局声誉- q- Q8 B1 c9 M: Q# b9 T6 d
let i 04 U8 L2 i1 x9 f) L
let sum-money 0  Z" h: o5 S# B2 x' y1 J& i
let credibility-money 0# ~) l: `6 L0 B9 d" o- ~
while [i < people]. |$ b  _: ^; T6 F
[( u, z* g5 F( N+ D9 j
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 x/ j. K8 u3 s6 \- w4 G5 ^
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 P! f" |4 ?& Y7 Z# U& Z8 A& kset i (i + 1)
, o' o3 n  i& c0 e]% v  s8 R- V% P, _* r! N3 T
let k 0
. b. {+ v1 P6 Klet new1 0  A" i; _5 w; t1 |0 C
while [k < people]8 c; ?) r% R8 I7 p" S; y5 p. V
[
9 O5 R. o& ]9 j0 u( dset 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)
/ c/ K* U5 k. K+ D/ G9 Pset k (k + 1)8 q/ S% B* U& j: {
]7 J  q5 j5 L* d5 W) v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 C% v' `/ ]/ s# K6 x* d% B0 ~/ aset global-reputation-list (replace-item j global-reputation-list new)# {9 b- S' o) ~  a6 ^+ ^3 E) g" k
set j (j + 1)
8 T# ]2 l6 ?1 }2 Z6 ^# {0 P% H- }/ e]8 o7 H7 n2 d+ L+ K9 ?* g6 m8 e
end
% L7 j# _/ I6 i- g) y( o( A7 c
$ n: ]8 `( A- \+ I, q! i  I, s, p
" i, c9 @* V* y. D& j5 I5 k! l  Z* t7 u! M# s& V
to get-color2 n; H1 M* }1 W
, @5 \/ o; p3 x" q. \: ^6 a/ j
set color blue

4 H' F9 o* n0 E, Vend" r% W2 o7 R2 o$ G  O- P

0 r& B5 K9 r; t: l9 [to poll-class
2 {8 l8 K, m' B2 E: I) fend
1 p/ g2 k: v& z& Q" x3 P" Y8 n+ f; _2 a2 W% l' C
to setup-plot1
# ]( ]( f3 j, S
/ p, w4 ]+ F8 v5 a: sset-current-plot "Trends-of-Local-reputation"
& f3 o! S5 C( @; W* F* k

" M5 W& k# O5 G, a$ Z2 n6 gset-plot-x-range 0 xmax

/ H* z' m1 ~: e* G* v! I" @1 O4 b$ _+ D# \; m* v" A: m" d
set-plot-y-range 0.0 ymax

# r* {0 t( ^& o! }+ ~% ?end
. M' U1 S& ?  k$ d' p' ?" F
! v( s. r, s3 p4 x5 }to setup-plot2
# V, V9 H2 {0 z' P# ^' C0 ^: }; j5 m0 |1 W
set-current-plot "Trends-of-global-reputation"
8 i, f: J7 E0 g4 J: ^/ j& t
# k8 M4 j$ p& v; a1 }! E
set-plot-x-range 0 xmax
9 @9 ^, J: U2 H! K! c* e

1 U+ [, m" M; H6 dset-plot-y-range 0.0 ymax

/ _4 {- f. W) c9 Cend2 G1 C* m4 W' H4 Y5 n
) D& o) G0 K- `" [8 ^2 b" {. x
to setup-plot3
; H" t# W7 t6 c; d/ a* `. ^1 r' H( N9 W9 w9 ~' I& H
set-current-plot "Trends-of-credibility"

/ Z# q) G/ y& \* L! w
4 |' k1 W4 ?0 T+ o2 Hset-plot-x-range 0 xmax

7 I' _/ u; h5 ~/ ^* J0 b1 v7 E) o# J+ W1 N- T7 I$ X4 Q" n/ I. z' C0 w
set-plot-y-range 0.0 ymax

  x3 i& d3 F+ C3 K* z+ N% ~end- z: I; N% r0 N% S+ d. d4 O

& m4 A# i+ H9 f. dto do-plots
* k- @4 x% Y) f6 X) t6 ^# z$ bset-current-plot "Trends-of-Local-reputation"! z; x: z/ q5 c. M5 E1 f
set-current-plot-pen "Honest service"# j! h+ o  G" N6 y' L
end
2 [( t5 C$ }- f$ U; M1 P$ T
6 {  a% G3 N6 |7 c  F* f[ 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.$ \; H' d. @2 h& ?% N' T
' x3 v2 g$ v& {2 o- ]9 R
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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