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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:
6 _/ W8 ]# R1 }3 E  U9 b% ~4 I( zto do-business ! R0 z0 ]# o4 {
rt random 360, W% o8 Y) o3 e! z, R8 \
fd 1: p6 u  W( G6 {9 y  ~
ifelse(other turtles-here != nobody)[
* T' w2 W4 x+ ?2 q   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.+ c2 b0 s* T& h! I1 I% v& ~2 Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    * p" l0 I: X, q- p) I+ H
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! U4 `8 B0 E1 p3 P/ N   set [trade-record-one-len] of self length [trade-record-one] of self# J. b- j- I+ Z" [& i/ O; W
   set trade-record-current( list (timer) (random money-upper-limit))
& `) n4 ]# F- z  i& {3 P6 U+ S/ Q0 w: \5 s) k1 c
问题的提示如下:
" o- D, N  q1 v$ U; J. L
4 _2 b+ b8 G2 m- m( terror while turtle 50 running OF in procedure DO-BUSINESS  P/ M- \  R$ j& u- D
  called by procedure GO
2 r5 j% N! @* g* R8 P$ ?OF expected input to be a turtle agentset or turtle but got NOBODY instead.0 x$ ^3 m( E# P7 u1 ?
(halted running of go)
. e$ }  \/ U( i) ?/ O& b% P8 }2 Z8 ~. C) x0 @+ K, L
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~~6 o% Z) M% S. `0 ]
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; j! k4 h9 }! d6 A
globals[0 q- A7 ]* i+ o* {6 D- n
xmax
. @8 H5 E0 A: [! @8 }" }5 |4 Nymax
- ]6 f# Z7 W) ^" gglobal-reputation-list- B  c" {2 S; y2 C4 ~
# \* z8 j* V  T5 B
;;
每一个turtle的全局声誉都存在此LIST
/ V7 x/ U1 S- Kcredibility-list% F4 [; _3 B# s. R2 c
;;
每一个turtle的评价可信度4 K& @% [+ G+ ~6 R% q, k$ ^$ }
honest-service
  ]9 _, c) V3 J# s& s- ?unhonest-service
+ h4 }2 t4 _% R* goscillation9 J' A5 U4 G& e* ]
rand-dynamic& J" y5 i, m  T0 L1 j
]
8 O" p" k8 z$ P& |  K, }. V# O; \
7 F) G4 y6 P) l& K2 jturtles-own[
9 H3 p  }2 W2 N" k" [- v9 @trade-record-all8 T* N2 T; f+ O. L" C+ r+ g- k
;;a list of lists,
trade-record-one组成
3 U( F" m# y0 mtrade-record-one
* P/ n+ _( P4 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5 u6 }5 c  h  a: n* I' Q: h
1 Y% N" G) k- Q
;;[
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]]
" G+ M* ]/ i# d0 i# ]) Ytrade-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]
& _( @9 ^, n  m! ^% Gcredibility-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
# y* q( g8 ]. N5 E) \) n: R$ @neighbor-total" X6 [& ?9 {2 O5 L9 S
;;
记录该turtle的邻居节点的数目
8 K9 s7 i% Q; [5 P$ f8 g/ b! X7 Qtrade-time
) r' v! l% ]- N# Z3 `;;
当前发生交易的turtle的交易时间( P" O2 i1 t& [1 Q8 K
appraise-give
% k, U$ Q# G0 Z' z- n+ F;;
当前发生交易时给出的评价
' _# [' x4 P% }- ?  m1 E# dappraise-receive
/ d9 l, U( u, g4 Y* Z. ?  N) n;;
当前发生交易时收到的评价
0 f$ m& Q' B+ |5 pappraise-time( o5 B1 X% e1 D# C8 e; z+ M) Z
;;
当前发生交易时的评价时间
2 R! W; X3 q3 u6 t- Glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ l6 v0 r8 m0 m! m! {8 N' O$ q7 s% \* ~trade-times-total
4 {- v1 T: c, I5 Y0 e  V;;
与当前turtle的交易总次数
' p: k3 K/ w( m1 g; H7 z' G+ g, gtrade-money-total
$ g1 a# t3 G1 i% x* W) E9 y* X0 O;;
与当前turtle的交易总金额
7 N# Z* ?# e' X6 F* W% Q3 @local-reputation! U$ s9 k( T: w6 G, u! }5 V% r! B
global-reputation
: h* R4 J1 n% Dcredibility
. a) @4 G& i. B$ X1 J' x;;
评价可信度,每次交易后都需要更新
  I5 K) t! w. R) s5 I; r9 lcredibility-all# p" k6 X9 ~& X
;;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
* @9 [/ [3 U: K. P& e- V: l( e3 f) R( L) |- q& 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* L) _7 p; f! P' C' u! e+ P
credibility-one
: ^8 F' R2 f+ @3 P5 z9 y;;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( E) p. m0 P' i
global-proportion
' K7 ]- Z1 p; F  @customer
! M: r5 c, G- _+ b) l$ R5 ncustomer-no- B! b/ C3 T$ X0 R8 j( y9 M
trust-ok- S9 q5 s8 Z, V3 J: I8 a3 x
trade-record-one-len;;trade-record-one的长度
. ]; Z/ F5 C& d2 E9 r+ j* M]
8 M* c% Z: e# }
8 v8 V; \; S+ F1 w7 d8 ];;setup procedure
2 Z/ P" Z6 d/ z
8 ~) s7 {( ^8 Dto setup
5 @4 t3 c5 n4 V! F' }% T& K: G" f. n+ l1 R
ca

2 r& n4 V$ i% b/ I0 G5 S' t
" X8 D5 {) A% j; b3 v- einitialize-settings

( ^- s1 o, N% }6 |! ?+ t+ j6 t. o, S0 y+ r
crt people [setup-turtles]

/ A: X3 l/ d6 i5 Y% M
6 N7 q/ J0 \' ereset-timer
+ S! R3 W5 I+ W" i& V& c

: T4 v" p# n8 g! |" Opoll-class

2 W' Z$ v6 Y! R6 J4 p1 {1 v( a! X
. g: J; l7 a; d9 Rsetup-plots

7 M6 a0 {; J5 ?0 H
# p# _; ?- U- G! B8 fdo-plots

, Y$ Q; u1 Z4 E! i3 Uend
& T2 ^( L, ?3 b# k$ D
& [  U. B  |  C. ^( hto initialize-settings
& I$ p/ c6 M: X: r
, N$ M7 j( l& {set global-reputation-list []
8 R3 N4 j. a7 H3 X7 u
# D! A. x9 }$ [1 x5 b" l7 n( [
set credibility-list n-values people [0.5]
( ?$ @1 d& H: U( \$ R( Y- [

" E1 E' M( g" L1 v. B' _set honest-service 0

5 a7 \1 w' W% E  E
3 v9 x/ S4 ]- v8 H  Xset unhonest-service 0

+ \/ O* o* c. X% u
2 U9 V( x% u) D9 E7 g7 d# {set oscillation 0

! D# o; ]' ^8 d3 h, K+ ^* |; k* V9 R
set rand-dynamic 0

6 ^0 v9 r( i: O# ~& Nend
  L. `( \% e. I2 y. m% D7 }; j' m! B
to setup-turtles
  ]/ v3 ?5 k  J: r2 Sset shape "person"
- y+ [/ n+ m$ S6 Tsetxy random-xcor random-ycor
* m2 R. h3 y5 Qset trade-record-one []1 v. |, y9 y4 u: n8 S. W4 h
7 v/ @, R! \: D' w  J
set trade-record-all n-values people [(list (? + 1) 0 0)] 5 s- |1 y9 Z7 `, b. g

. }/ |" ~; A: z) U& {set trade-record-current []
, L% _2 a4 `  n- uset credibility-receive []
: K7 F6 j3 N0 T, T2 N, ]/ T, vset local-reputation 0.5
* c) p4 S- L  b) {set neighbor-total 01 `3 Z5 Z( Y6 G+ m* {
set trade-times-total 0+ g9 }  ^7 b+ v: Q5 }9 g
set trade-money-total 0# B) \  J3 X$ Y( }
set customer nobody0 Z# W# q! q+ W- s) M3 z
set credibility-all n-values people [creat-credibility]
+ A# f1 q9 R9 v+ i4 L& ?set credibility n-values people [-1]. V) T# n+ Q, w/ o+ N( i, }
get-color
$ g& c0 @$ y( K4 X; ^

  b; j$ V. A0 Iend
) G% E! t8 u5 d6 E: q5 ]+ U5 q$ {& K- v0 G
to-report creat-credibility' @. K3 f' Z" m" F  J: E
report n-values people [0.5]2 E, F* K' @( \. s) A8 n
end
6 T- w6 Z9 J4 J- T! z3 Z+ g, c( Z9 \! |% b
to setup-plots
* C! Z% F: P+ z2 A5 ~0 T% y
0 d6 H6 [% D* a% |set xmax 30
  y9 p8 L3 n* d4 @9 ~8 c- @

% }6 M3 b# L2 Q) `set ymax 1.0
' {( b2 S; _9 p; K; c

' J1 z1 G- B2 a% \. h* s6 Mclear-all-plots

; d1 G$ _# C$ z' J# E! f
* E# W+ M3 ~1 F) a% F  Asetup-plot1

5 [) @3 o! w: N- a- X
) f5 A. P- U3 k; s1 g1 I" gsetup-plot2
) O9 m- x5 c" A: N0 E0 u) e. j+ h( x; @
$ s8 ?6 M! R; |3 z
setup-plot3

( h; h/ o) L2 v7 ?+ oend' |( @, ~% ^  E5 ^* Y8 E
% b* ?- x, r7 z/ F) j+ T+ f
;;run time procedures
' J/ D. |! [/ q8 {' n, Y# G  Z9 q8 `1 Y
to go/ h3 z7 i- U; g
. E5 n+ h/ h4 q4 P
ask turtles [do-business]

  r1 c( {; \5 z! s( H+ eend
5 K- H, S0 v6 G" I7 Z* m+ L
5 G+ T- z1 ]* l% S& Cto do-business 8 e% l" x" ?$ D

0 B" Z" S( q. N4 j+ l3 T5 [
* k& p# [9 A7 g8 R$ }rt random 360

3 K1 W/ m; m6 S# r$ @1 Z7 a* `) g2 ?7 G% T# A; d
fd 1
3 O! u. k" P9 s9 n- w4 |

  `: i& Q& `* {% @ifelse(other turtles-here != nobody)[

/ {1 }1 \4 `' ]4 `: `
8 G0 R% F0 }2 n! I- n( eset customer one-of other turtles-here
6 {/ O" S/ B) N4 G' v2 H8 [3 ^4 }
. h( H6 [9 A$ o6 s
;; set [customer] of customer myself

6 P3 K  k/ z0 N" w& F5 F1 E& {6 ?6 n
set [trade-record-one] of self item (([who] of customer) - 1)! `5 M4 [6 r" J* U
[trade-record-all]of self$ [9 C5 _, ~3 E
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
; i7 Q0 @3 g/ K9 O& ^5 J0 a

6 g' ]. m' s- o2 H' B2 gset [trade-record-one] of customer item (([who] of self) - 1)4 T5 h4 L1 U) `5 b* D7 X
[trade-record-all]of customer
/ p; [' _6 o3 y! K9 z. P* y0 D6 d
7 A) [$ V# @0 _' S; `& ^6 _- ?
set [trade-record-one-len] of self length [trade-record-one] of self

8 J+ t3 \4 G% h  v) A& J: I' H; {/ b
set trade-record-current( list (timer) (random money-upper-limit))
% A( G$ x0 A0 D2 P2 H, L3 w6 [
# \- I3 N7 |5 s) q' `3 A- w
ask self [do-trust]4 G( N. G; @  w; w6 j7 `  _* n. L, a
;;
先求ij的信任度  f0 V6 r& l  M) G8 x: g; G/ p
7 x( g7 d+ s. v; a/ Q
if ([trust-ok] of self)& m: y' O! l; a; r
;;
根据ij的信任度来决定是否与j进行交易[
' I+ N  A* z2 f: Z. Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 S7 O: V9 D: r$ n# {3 t2 V( Z! b: N3 ^8 f# P1 ]+ |# Z) |& o
[

$ z: N  ~& B3 T) J. U$ J2 ^
' x# a( U; e. f% R  D) Edo-trade
8 m. R# b) Q$ z% V
- z2 G( t% E. J; n
update-credibility-ijl

$ B' X6 {3 ^2 V1 J1 r& _0 n# v
* j0 G( E! m7 r/ H" Uupdate-credibility-list3 _! h( h" c: m: @8 \4 F4 }
2 |& Q' _8 A, F$ `# e0 E; ~8 t

/ o# H- ?: `, |$ M9 B! h$ Wupdate-global-reputation-list
, q" S8 K7 B. {! M- L# P
4 I! x  j5 U& k1 D0 w1 f
poll-class

# N+ w1 ]- A# @3 @8 k: s  x$ o* G
+ P1 F  @4 o& w: i( `& W* Vget-color
" }& M: D+ M* @# ~% \& I$ K

0 a5 }  z$ p( B1 V& F]]
- h! G1 |+ e2 |
( Z8 W1 I' k, A8 U# H0 Y& A1 x;;
如果所得的信任度满足条件,则进行交易
  L" \1 h* A/ W- l3 Q) z% \- o7 ~/ L! ?- m% \! d
[
0 [1 L$ F; R1 R0 {' U2 A8 d+ g

5 c% Q! Z" f- R) @8 Ort random 360

" H. G" @* o) l- C2 l6 a: m0 t" B3 z" J  M
fd 1
8 L; Q/ N* H0 Z

; B* L* [' H/ b# v/ W]

; p) r% W1 b9 z( w) G: [% M+ X4 W! p9 U1 p
end

& `3 E" n0 Y- n
, I; V+ t3 I- r' a8 V: T; uto do-trust
/ T: ?& n1 `: N$ B: k6 \6 U& Eset trust-ok False
# c7 e/ [) i! M  e
) p7 `) G2 n7 v3 u  j: Q# @

& z# f9 v, [2 x; |0 E" hlet max-trade-times 0* r. S# u1 ^/ Z$ j* |2 l2 s$ c
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 i/ C7 f+ t- c9 ~- N4 S6 ~
let max-trade-money 06 B( ?, P8 ?, c( c! Q* S
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 Y0 o# i2 K% _6 R: I9 v6 e9 o, ^
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 ^+ K- {/ Q3 N( }4 u/ v6 K

# Y9 Y' x$ _5 n3 a8 a& @, L: b

: m2 I1 N; N/ _5 {" j  Gget-global-proportion5 m/ F, V7 D3 I$ v1 O! G. W
let trust-value) a+ X1 _; ^6 u3 @! D0 n/ \
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)

% S* j( S3 r1 b/ d0 lif(trust-value > trade-trust-value)- t2 y- w; L1 G
[set trust-ok true]7 S# T6 q$ B, d5 q! }5 ^$ F1 j, f
end9 _: v% L$ ]9 g) b. [

' q- p7 W: U! T3 C: Sto get-global-proportion/ l% W7 h7 K- q+ p! G$ B
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)+ h  q4 x5 _& d* H8 i# q% q  U3 C
[set global-proportion 0]
; j; O  M. L3 K. k! R0 _) U: x' m[let i 0
! t4 [0 ?* w$ n7 r- s' v. `let sum-money 08 w- C5 G4 X" g: Q
while[ i < people]* J; S: L/ F6 H6 Q+ J5 m
[
; j* Z: o, |8 ~4 }, Fif( length (item i
) }% ^( S( }* T" x# b8 H[trade-record-all] of customer) > 3 )

2 \1 t# N3 R9 c; t, U( P[1 j+ c/ y0 L( Y) p
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ a' n) r1 |, N2 m4 k, \
]1 f. B; ?9 w8 s! j- l9 w8 [/ z
]
+ L7 m0 y; \8 d% R& xlet j 0% ^( w! Y5 j8 w
let note 0
3 q( X* B/ C  \) ]# Q0 j! K9 K1 {while[ j < people]
& `# I0 T9 Q2 z/ ?( K7 t( k[
& ^- I# D& H8 a! O5 C) F; Hif( length (item i
* U4 V5 t& ~; I[trade-record-all] of customer) > 3 )
+ y; L# v- d. r
[
6 Q' Z' K* B4 c7 X& ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)! \6 c* a0 c0 P- G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
( X8 N& Z6 r9 }4 m- v' ][set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ k- E/ ^$ F  u; z  k]
* X9 ~8 g  b7 f# L, H* J0 d$ ?( f1 P& l]
) {% X9 f3 \5 C; w* ]2 [3 Dset global-proportion note: [! Z, \; [4 _
]3 h8 h% Q$ @3 {. @* N+ E
end
- R# F! M5 q# m+ k# x2 M/ {8 @. E( b6 F+ m$ z& k8 X
to do-trade
4 s# D% s0 G( U, [;;
这个过程实际上是给双方作出评价的过程5 F/ T. N! l% b9 y% ^+ f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; L" Z! _! P: p3 Z* @" t9 w
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. ]" ]; m  t# _6 c4 p  s3 g- Y
set trade-record-current lput(timer) trade-record-current
/ V+ t+ q% v1 L* n;;
评价时间
% E* a2 G% ]. |  s4 _+ ?ask myself [* h6 \7 g" Q9 h  |& n0 `
update-local-reputation
! C& Y5 ]* M. u. M3 Mset trade-record-current lput([local-reputation] of myself) trade-record-current
7 K: \  S% A' w0 L: B* h/ n]
8 K; {; Q: A, f8 Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 w) G. \% o  y1 ?
;;
将此次交易的记录加入到trade-record-one
3 _5 V8 U& B0 L- J' x9 Dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
; r7 |% L; c, p0 G- k5 f: xlet note (item 2 trade-record-current )
6 T7 c+ l' X( T! Jset trade-record-current, q, Y4 W; `2 D" {5 j3 d! I
(replace-item 2 trade-record-current (item 3 trade-record-current))
! C* t; ]8 d+ K3 `7 r, D* b
set trade-record-current
( s" @- o2 m) A5 X(replace-item 3 trade-record-current note)  p' I  x4 E8 ]3 z

5 c8 r2 S$ X8 \* o6 S  F

9 s* @: _( {. q9 C* U/ Sask customer [4 h0 _$ }6 c- z! {! _
update-local-reputation. u  e( z" @: |. S4 t% J0 v
set trade-record-current
* d5 h; p5 r, i: }(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 g* ]0 C+ r) p' G4 s: v4 y
]
( i6 F5 K* [4 e2 _6 H6 Q+ F8 n  V. Z
* J% K/ Y: L+ L9 ]+ D% b
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 v3 z+ k1 D5 k

8 b8 s& u, ~7 [" ?; M$ Xset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 {- |0 z- E, ^$ r
;;
将此次交易的记录加入到customertrade-record-all
& ]9 k- ^* R+ S8 c0 lend
2 d; F4 @  }) E4 t' a0 g) j" s2 S/ Z/ v6 }  j8 m( s
to update-local-reputation
' c- o- ^7 i) M7 h4 H' o! iset [trade-record-one-len] of myself length [trade-record-one] of myself
  Y7 Z+ A+ O! k, B9 P) I# p# P/ u8 o4 ]$ \. ^+ y/ u! q: l
+ k6 G. Q) F4 {
;;if [trade-record-one-len] of myself > 3
% G, f0 j& x% ?9 b; \& o- O
update-neighbor-total3 a# w: l3 i- {- [& c  d* @
;;
更新邻居节点的数目,在此进行
) o( H. ]! o. t* F# Clet i 3
% h: k2 B- Z- p# x, |let sum-time 0! |2 ~: ^) P7 `' f! `. _0 X) ~
while[i < [trade-record-one-len] of myself]9 w( a7 f' r% _  @1 m5 J) }5 m
[
! H! _+ X) X  a# @set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 T# {) x4 V, P9 y* q) oset i
( r; ?6 J1 I+ X" t* _3 V( i + 1)

1 H& L" j$ w0 r]
& {# \& O6 H5 I9 v* Llet j 3+ A4 U( A0 t( I5 E4 {
let sum-money 0( [6 u/ }& @7 S
while[j < [trade-record-one-len] of myself]; b' u: G0 c, I; Y
[
" m# S- S4 _# R( k, Z1 p+ r% Rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 z7 h& M9 ^2 S. Q
set j
# Q* G( D. K* g: x, s6 Q( j + 1)
1 q. y& g8 j1 D0 F3 v
]- G1 n/ ?+ H9 r
let k 3
/ J" n4 d7 `; {" a2 llet power 0
/ a" }' P. z' C9 g1 {/ Qlet local 0- L" |& l1 t& J* [* v8 X
while [k <[trade-record-one-len] of myself]- |3 \! v: \1 N6 ~' N
[
& K2 m4 t! C" m5 Dset 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) " J7 s! d- q- `* Y$ g
set k (k + 1)' X" Z. N- W( V6 X1 v7 i+ y
]; s6 u2 S7 W4 \6 Y' ^  K
set [local-reputation] of myself (local)+ `" e/ p- U; ^& V1 y$ S
end
: l1 U3 Q9 x# t2 M
3 |0 A( W$ @( b- s1 @5 {to update-neighbor-total8 R0 `( X5 q; o% i4 F
( H( \* n  p1 s0 V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]2 ^& L  C3 T" m
7 d6 V5 |; Q4 t5 `& M7 D

8 a+ C6 U% {# \! j5 Gend
* I% O/ p" ?8 v" ~6 ?. Y9 O5 A1 b+ c$ s; [
to update-credibility-ijl ' t! ^8 ?& I. ?

7 v) j" C# Q5 y+ z, F  D, 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。: A' s$ h: L  N& t5 X' q4 H
let l 01 `$ O# a) m# K  \
while[ l < people ]
- z0 ^/ b" d3 O( `. |8 x) W. `;;
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& t. ~5 s4 p* P; ?& y3 B& w
[/ F' z6 _& X+ v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, h6 t3 p3 l! Z  G( Dif (trade-record-one-j-l-len > 3)6 y& @. m/ W: U' z
[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
1 K5 m$ \6 v( V/ j3 M4 \6 T, rlet i 3% U2 M$ N( Q6 E
let sum-time 0. B. v- [! S4 N
while[i < trade-record-one-len]5 l5 b# t2 f2 t2 E
[
; d% L0 Y$ Y$ i" y5 D* l# aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) ). O6 ~: o* R8 o  \
set i3 X0 M' D; Q6 E6 Q) O
( i + 1)

( J, y: w! @9 w- u]
9 H( Z/ {; t. \7 O. b& i: c" ^% Jlet credibility-i-j-l 0
: l5 j! s. M! e: [;;i
评价(jjl的评价)
" P, j8 {" L  j7 Flet j 3
3 C! k' ^6 P# j7 c- j0 }let k 4, o: O0 h4 |# _
while[j < trade-record-one-len]
, U& `- G5 M3 f5 {' S4 \[- C8 F  O8 F$ h3 Y# N
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# b7 X6 t2 j; [5 L" p
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)
* \+ p$ A. d2 ^5 `set j8 Z. d7 a( D5 a
( j + 1)

! |, A# v7 u$ h( a2 J( S]
2 w' A& |/ C- L2 Sset [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 ))
" k% s, n( ?$ m; w0 r1 y! T/ ?* j. h
3 [# I- f& Y: a% d( a1 Q' q( E

; I, {  \  r# ^& t+ @! F/ Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 c. _, i3 q3 d7 E) r1 ]6 z;;
及时更新il的评价质量的评价
2 S4 s4 ]6 Q; rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ d' \) G6 Z- R) b. {* @% r# A1 T
set l (l + 1)  I  h6 w* i' V* T* L6 N
]3 z$ {2 D- M9 p* N) D5 M
end% D3 {$ L9 n$ g" X4 g

% K; f/ ^: c6 y  o6 N3 m' J% hto update-credibility-list
% E* j0 v$ S7 a- Jlet i 0
6 o9 V+ A3 C' T7 m8 g4 Pwhile[i < people]4 [* X4 u' S% I" U" Q3 c
[
. q  B7 U9 u4 c6 M4 O0 `3 D+ ^% ]: `, Qlet j 04 N& H9 M6 C- @, [9 X2 ]
let note 0
% E/ P. J( A7 r3 g/ Vlet k 06 y  b& ^/ a+ ^) [8 B" U8 U2 L
;;
计作出过评价的邻居节点的数目2 g+ j' F5 u9 H% ~# a1 x, V! A6 ~2 n
while[j < people]
% {- \) j$ r7 {1 x5 E4 H[8 ]9 `& y" ?6 e. _
if (item j( [credibility] of turtle (i + 1)) != -1)
  i# D/ W$ E+ @+ b/ j. A;;
判断是否给本turtle的评价质量做出过评价的节点
. `# w5 e* o5 s4 }. w  G2 z[set note (note + item j ([credibility]of turtle (i + 1)))- W( f" `7 D6 q& M' a7 P
;;*(exp (-(people - 2)))/(people - 2))]

: Y" Q/ |* ^. U4 |' gset k (k + 1)
9 I" B2 Z* c7 v9 ?2 W3 p9 D]
) }/ l2 L# S$ K% E9 _set j (j + 1)5 ?* o! p* h$ C
]4 _" {1 t  f/ B+ c- P' L
set note (note *(exp (- (1 / k)))/ k): e9 T- I% J* C. y% T
set credibility-list (replace-item i credibility-list note)
% h, {) o) c* _; x+ \set i (i + 1)
* n6 K4 |7 y% a3 K" |/ J& C]
, U* T6 ~5 I; d  mend! g4 l" H; o, q0 B8 K8 ]% t
- t) i7 {- c; [& n+ Q- a; N/ i2 Q* C
to update-global-reputation-list% B3 B! T5 f4 F6 e9 x
let j 0) K* x) _! u2 v+ B. H, Y
while[j < people]: G- P$ F8 N  p
[/ ^- C3 ^5 }) k6 @- s! f: d; O/ h
let new 0
5 _7 i. E/ i" E+ G/ e( G, b;;
暂存新的一个全局声誉0 u0 H8 w+ ~3 E
let i 0  {4 j0 k+ C/ n" S
let sum-money 0
7 Y% v- M1 V# O8 Rlet credibility-money 0/ }4 D9 F& f9 q; J' ~
while [i < people]$ N  X/ x9 p6 G
[! S0 o% O. Z6 V& n5 h
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 i0 Q9 F' `( G! ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 j$ i" Y6 d- c2 |
set i (i + 1)
9 R3 j& ~8 \* I# E) F7 k]
+ l3 {0 ^/ ^4 ?. X' u( B# ^let k 0: d0 x0 v- v2 i) L; Z9 }
let new1 0
7 t5 T* u% c; {# gwhile [k < people]
* [9 K; ^6 j0 f1 q+ L6 y  L[
* V( F* F* u, E" M/ [; r$ h  I8 @set 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)! G) J. p1 j% K' h, N9 m8 q# p
set k (k + 1)% r8 D# f4 E' N; M
]
8 b8 N! Q2 `8 f# R* Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) M$ [4 A( d- ?8 [6 V/ u
set global-reputation-list (replace-item j global-reputation-list new)8 ^1 l6 x+ ^2 [/ R6 \
set j (j + 1)
, L. l0 E# F( n9 t" T! H]
7 a1 I. H0 g! b! k- O' `2 send
- j! g4 D4 [# G7 P5 c# B7 G; G0 u# K  X) F  O) d5 R0 T
% [) D+ r- L9 F! ^6 v0 P' |: G
# m2 t3 b! d; H: L. F
to get-color9 f' Y2 y! V2 X& A- h( h

1 S! e9 p/ C; H: L/ T  P/ Nset color blue

1 J. G9 r- p5 x" I" ~end% \/ [) z6 @- S% b3 p) l3 A( r

: c/ M- X  H  u4 n2 l- O" c8 fto poll-class
) q6 m3 h; @! Iend) z( s) }* h* s2 G

2 ~  e7 `7 K: @# B  H5 n: F1 V9 Zto setup-plot1
% v! [- g1 N3 \0 k: {/ y, z
8 ?( @8 c# m" Z4 m+ F+ q/ hset-current-plot "Trends-of-Local-reputation"

, x7 \' b/ t/ {! ~7 x+ X3 K8 K1 U2 c2 P  S2 Y( ~! p: M. X3 d
set-plot-x-range 0 xmax
0 E, `7 E7 l7 u
3 O9 d6 ?3 A" d! K2 |
set-plot-y-range 0.0 ymax

0 U- {( T4 N) r; n, ^( V+ k( |8 Eend  X; z* g8 G# u, N

" R) t; [  k; A. f6 p/ C* Qto setup-plot25 @- l6 @; E6 Y0 i" @" s

2 o! M" a* i4 Y6 ]set-current-plot "Trends-of-global-reputation"
( {: V! ]* G9 x- M3 G3 ?

& c' K8 N  j1 p; R$ Dset-plot-x-range 0 xmax

. w& g' X$ |' h& i, p5 D: M* B- x2 S; v. E2 R
set-plot-y-range 0.0 ymax

. T" I# ~  S2 t  G2 {* Oend
3 c' Z; M8 s) M1 p& A
# x  o. x7 s4 s' u, Eto setup-plot3
' D" D- q1 T' J: A% w2 [
+ u$ r8 O$ ?+ m7 J- G% j, Hset-current-plot "Trends-of-credibility"
) T. Q. J6 E" a6 m# Q5 K
9 B8 v- x3 d# _1 L( E' \& v2 G/ R
set-plot-x-range 0 xmax
' ]! S- W" _' E' A

" U# Y% d0 ]0 r5 E+ F: Iset-plot-y-range 0.0 ymax
: _6 }; d$ [' [% }7 V7 u
end
/ z/ w  ]% H' ?9 p. H3 v4 L- _  Z) M8 ?
to do-plots
+ Y: }! l5 V4 A  t- ^5 Cset-current-plot "Trends-of-Local-reputation"
) B( I) Y& z+ U8 U  Sset-current-plot-pen "Honest service"
$ T- P. E9 N2 r  e% uend/ k  J$ v" E. y- ~; B

0 H4 @$ x- y6 u- 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.
! p' j' x6 O# Q" w
0 p* N; E, l% T! _( @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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