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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:
" M8 g$ G& F* v( k& D) X  Y6 c5 M* D& lto do-business
8 Z2 o5 _3 c! r7 u. o" J rt random 360* j6 \; p" h% K
fd 1
% N7 g% G8 H4 y( _0 X ifelse(other turtles-here != nobody)[, u! z0 q- s( h2 H$ ?0 a2 n
   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.
0 {5 V; k7 H( g: J   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    . n, `9 Q8 N) `9 y1 e, W
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  M! H: R/ v7 K" C+ K   set [trade-record-one-len] of self length [trade-record-one] of self
8 X" W' v; Q" L9 \$ m   set trade-record-current( list (timer) (random money-upper-limit)); w7 \: F+ A8 \, W" b
& M5 f! Q+ E* {( P
问题的提示如下:
( w% ?; V$ j) j2 X; i' B/ \$ a! H- Z- G; G
error while turtle 50 running OF in procedure DO-BUSINESS
( @5 M6 L+ K2 }1 ]3 w: d! @! ~  called by procedure GO
# t' ?  M5 n* b5 n" z/ sOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, Y5 @1 n8 s' S3 ]3 Q$ y/ }8 d
(halted running of go)7 P7 m2 ^" h4 T1 Q
' n' G5 z& w3 J) ?- }; K
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~~
+ b5 v; y! N- w! u. r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: s, U- ?" ^4 E1 i3 G4 ?8 G
globals[
. V) u/ D' z, Kxmax
4 F) F6 ?; P5 f7 I2 _# zymax4 A, \, a' r3 x3 I1 I+ y
global-reputation-list, T* A7 M4 \! h

7 M2 b) L- K( W. Y. u" Q;;
每一个turtle的全局声誉都存在此LIST
3 |4 ~% \$ S$ T& n# @& w: T6 Bcredibility-list- t" A8 Z" @) x* d' P
;;
每一个turtle的评价可信度* ~0 g4 ^; h4 \, @
honest-service
! @2 `* p# J6 p) Kunhonest-service; N8 [+ ], t& }& o
oscillation/ X. N5 [; r2 Z3 `, |8 W
rand-dynamic
8 @" {8 V  r3 C, u, m' W]) V5 y! n, C8 {0 f& N

  i7 O, S/ ]3 o  ]) _7 T% n2 d2 [turtles-own[# C4 B) `1 @6 [  V
trade-record-all9 Z* h0 O/ x1 p- l/ C% Z: p" ]
;;a list of lists,
trade-record-one组成4 c& Y( {  ]! E
trade-record-one/ T4 l. E8 Y: b( z/ ]8 A1 O# n
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录7 |4 W# b5 l! `3 o

4 J. y& I8 V1 U1 W2 z: p;;[
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]]
4 g/ J% O: h6 |& `9 Qtrade-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]) N* }8 r  E# d8 F9 f  T
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list' J8 @6 u( }6 W8 {" l$ b+ D( H3 @. T
neighbor-total
0 Z0 A) B  j6 u1 v4 S7 V;;
记录该turtle的邻居节点的数目
8 Q% b3 a+ e& I7 ]- j( qtrade-time. P; f' k* W" @3 m
;;
当前发生交易的turtle的交易时间
( |& L- @, T9 Z& _, a5 w, S' ?appraise-give
4 Z0 P' Z# I* M0 y  g' i7 e;;
当前发生交易时给出的评价4 f" |6 T8 T1 c/ G3 b
appraise-receive& T6 x- Q! U2 y5 k& l
;;
当前发生交易时收到的评价
5 ?- f3 q( H5 E/ p1 D; eappraise-time# i  b/ ^$ t. V% q
;;
当前发生交易时的评价时间
8 g. }/ n" s6 ~) K3 wlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 V4 ~: `/ X' W( F, ^trade-times-total  I$ c7 `- a' f" ]3 \
;;
与当前turtle的交易总次数
1 Z- Y. D: \1 f; {" M/ T/ s  Ktrade-money-total
& S- e9 m6 X+ l" T6 x# Q% @: @;;
与当前turtle的交易总金额! ?9 V: O3 W0 p! \# U; j
local-reputation
6 e2 ]* x( h: ~2 _* ~/ B7 Lglobal-reputation
6 }, z8 T3 k* i/ U; qcredibility+ `/ o& j( \- b0 t1 Y
;;
评价可信度,每次交易后都需要更新
* A* r+ y/ }: Bcredibility-all1 r4 ]- h# v1 e1 H
;;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 F+ {0 R% x* K

; P8 a+ W+ X5 };;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( k" I3 `( O& ]2 x/ f
credibility-one2 E1 j0 o4 L* \, s. v7 R* b; @
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people( i6 H) y1 o. k/ y, ]
global-proportion
0 Y% _4 U8 H" E5 P* mcustomer
  h7 x. H# {: Y/ y) }: ^customer-no; f# Z% o- s5 L, W; o
trust-ok! R" ]) i8 E# g. z, n) r7 ?
trade-record-one-len;;trade-record-one的长度
6 A7 R# C4 ]3 u; O" t]
6 ?  c  n( V: B1 n! E: O0 O  ]& b
1 C9 W" Y1 H; c& H8 h5 P;;setup procedure# Z7 }$ ?& g9 `) k' h7 h+ k- R

0 T5 ?4 g/ m, _6 R/ ~to setup
" |/ x9 g7 X& R' m) |3 R3 ?# ]
9 `9 J% Y% x. Z0 R$ Lca
% s9 D$ I% q& G5 @' f. k4 ?7 K8 b
8 U8 I4 j/ M1 v5 o$ F8 @" C
initialize-settings

: ]/ i  ]. @0 ?; x* r+ q- q- d1 R3 h- C: i
crt people [setup-turtles]

) S& P: q$ G4 Z# M0 Y$ ?# E+ y; B6 D4 \. i6 V6 s
reset-timer

2 T$ T  O) b- ^9 h  N) X) A* m" h) v) ?1 O
poll-class

: D+ |- T7 F& x' a9 P( W$ H; Z9 C0 I; e4 J; R0 i. c8 r! u4 C
setup-plots
* _# u6 t, n. e5 t) v: k
$ r( c. k* K) g! ^, @- h
do-plots

$ v7 C0 ~# ]6 E8 s, T* L1 ^end# ~- d$ R8 p! `' B9 N: j
! j6 O1 f5 a  r; z8 w* Q& [
to initialize-settings& s/ X' k. L9 R2 Z

5 a+ E8 k( `6 Pset global-reputation-list []

, v! ]9 h% \5 L9 y9 u7 y) k, C
# K7 [, \" S% X' [set credibility-list n-values people [0.5]
/ O; y8 ~$ j/ u9 m  x
; M5 O1 y9 a3 y& [
set honest-service 0

6 Q' |, W3 {# G& V" Z  Q% x, ?1 c8 j1 h  |
set unhonest-service 0
& y8 V7 |8 Z2 T
3 F; i4 h& }4 c/ z8 \
set oscillation 0

/ c9 M' M5 s, X! o
. w& g. K+ e" E" Qset rand-dynamic 0
% o7 U+ A7 C& y
end
" O( e" u) O4 J) `; O, ~1 E: \* S/ _) b4 R8 o
to setup-turtles
7 I, y& E4 O, L3 vset shape "person"
, t1 ?# f4 m% c7 t0 v/ r6 `0 H2 ssetxy random-xcor random-ycor
# G5 ^. Z8 w" m+ Mset trade-record-one []
( J: Z: j* ~- J2 l: l- D' R

+ T2 y  a* `+ R2 K" c6 F. qset trade-record-all n-values people [(list (? + 1) 0 0)]
+ E/ U+ `$ R1 V/ I- k

1 |% d( [, C1 f. Dset trade-record-current []
8 X" L8 a, t- X/ `& {: \set credibility-receive []7 t2 l0 _2 {' Q5 x
set local-reputation 0.5
% w1 z/ q/ a/ [  Z7 z! o: aset neighbor-total 0
4 X7 _: N/ }- M, R4 Gset trade-times-total 0
3 `( L8 w7 e5 s: k( }set trade-money-total 0
; N- ~) \* F; o- uset customer nobody9 m& K  H" T5 b
set credibility-all n-values people [creat-credibility]
4 L: d) _. X# U0 c$ m1 y! Jset credibility n-values people [-1]
, H- R% G% X& F" P; J5 Y- j, Cget-color, V! j: ]! T2 s/ }2 ~0 U( j4 H/ s

- ]; k- q0 a0 v: r! J* lend
. V) H5 _3 @' w3 [+ ~1 K7 c( Z' Z. `% n1 J; N4 W1 W5 B% ~& H9 R
to-report creat-credibility3 t/ x: `2 Z) o0 U% h
report n-values people [0.5]
3 \7 }- e8 P+ x7 qend
: f* q4 J5 w5 K4 A7 c' Y) y% s& M0 y
to setup-plots) C& c( t0 D0 N+ T
0 o1 C) b- G7 G/ |2 f2 X1 K* r
set xmax 30
5 O6 F7 u7 G# i1 a% o

8 i' T3 ?% D+ P' w2 oset ymax 1.0

' p) M" e1 h# {- C% X8 _. i5 |; L2 v0 u5 o. E8 T! w, a5 v
clear-all-plots
. J1 u$ |$ z1 n, c  d- A3 s

8 a/ i5 C& P) e0 nsetup-plot1

. f, f' u) i! R0 l4 N9 s- N* |% n/ U# J) B7 D$ {  _
setup-plot2
2 D& E6 [- P+ B

- K/ A/ t* I( b# g  @setup-plot3

3 K% @! Q* `; x! X: oend
% X0 j8 S5 i& D' O) `" n9 a
" N% ^# j! n. J& N3 [;;run time procedures
8 e3 G4 j# C" h$ d  @, l3 C% ^* |
to go
* u0 ]6 g  D1 y1 L  b1 s' y9 W/ E" X; [3 u0 r! g4 \! E
ask turtles [do-business]

0 G# x6 I  b: K8 I" e( T+ Zend
' H  }0 Y3 j  ?( C
8 Z$ @' D) y+ C- E/ C2 bto do-business
/ H* Z1 D+ f9 |* ~% ]) W+ ~
+ h9 [3 f# r9 d# T. \0 N

% [5 x5 E$ s; V. ^/ I5 _rt random 360

+ Q2 h; B+ q. ]5 H' K6 M
" q/ r$ r; Z4 d' p  G. \fd 1

$ ?$ K: ]; e% u, i4 }" K/ G8 D' w) C  y; C. n
ifelse(other turtles-here != nobody)[
% Y4 Z7 K- u2 j- D

5 p1 |* j. c. N7 Fset customer one-of other turtles-here
$ D6 Z8 p0 Z2 j& O' G
8 }4 K( [$ h) K$ O
;; set [customer] of customer myself

/ i: G$ g2 y, q8 B5 d4 c4 {+ \" i  d+ p! v/ R+ y! D2 a
set [trade-record-one] of self item (([who] of customer) - 1)
9 E, e3 \6 k( I& K( @* Y[trade-record-all]of self
0 l7 @+ t% n1 t;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
7 |! O7 }% H4 U& ~

( E8 @) k0 R7 Tset [trade-record-one] of customer item (([who] of self) - 1)% ]- B6 I1 U- w. t7 s1 D
[trade-record-all]of customer
. J6 M* a- S$ O
, h- Y! e1 b& U6 ^$ n
set [trade-record-one-len] of self length [trade-record-one] of self

+ q1 H" a1 j5 t! O4 j( a4 w$ t
" E( }1 A2 V6 |5 \+ nset trade-record-current( list (timer) (random money-upper-limit))
' ?: m2 |: [- \2 o: ^1 E: T
! r$ y( p3 s! z1 G
ask self [do-trust]
9 z* ^. o' T  u5 v& y5 g! c6 q;;
先求ij的信任度. H% d3 ^* _2 i. H% X

6 {) A$ N) M; ~/ h' T: eif ([trust-ok] of self)
: x' O  `- I0 V' C+ a7 ^;;
根据ij的信任度来决定是否与j进行交易[0 ]& V; G0 w, [5 t
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, ^6 d3 [$ g5 f9 R

0 p! E- y7 T  H8 M$ C6 K[

5 X( H" V/ B8 X( t6 k$ ]$ l
' `# _) Y$ `7 C7 \$ E5 ~do-trade

& C: |" X! ^+ p6 r8 N6 W+ k. n* {. ^
update-credibility-ijl
7 t5 J/ s" Q  ?, ^- \
5 F, B: Y+ I, W# S" q+ F) ?
update-credibility-list9 Q3 u3 l# R' G* o# s
; x1 x2 h# h. H5 I2 T% p
0 f# W2 E! n6 [# C. r
update-global-reputation-list
! q+ }/ A. ~  y# H% I
/ A! g3 d; z% ^7 K
poll-class

, L5 b+ i# q$ Y( {8 m( E8 G$ @  t; H
get-color

6 Q7 R$ |0 a- j# Z5 z7 \9 X9 v2 P" ~9 {  J, H+ [& q, j
]]8 H- |. l& J9 J6 |$ {
/ }; o1 q" J3 M* G: K7 c
;;
如果所得的信任度满足条件,则进行交易
) H/ ]( C) C6 I. ]9 }- [2 T% u7 @
2 \7 A2 i, h8 T6 g' |% Z[
5 [: a/ Q' l; \8 P

2 g2 C4 H5 g/ G- L! @) R1 o+ Srt random 360
. e. M* ~  w" ]8 P/ F8 z4 I, [% o
, ]4 @1 }+ o  W
fd 1

' j) x. ^3 G5 g- \6 U, k4 h5 s* x3 y1 P5 k3 i7 j+ G% [- R0 m
]
" t' l! M8 I. a3 M# V3 k9 L; N6 C

. z1 K2 R3 W; h' O4 gend

. E5 t* I0 N9 N. ?5 y
9 Z- {, c9 L% V# Rto do-trust
" X( R" h# L0 Y( T' n' tset trust-ok False
" Z  r: E, S/ d- d& n3 U* B7 ?6 i: @1 ?6 C

; g: V0 w' L/ g- A4 K4 z" Plet max-trade-times 0
9 u; _' p' b2 c1 j& V# Jforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( T3 }. C" Z# d) S
let max-trade-money 0
0 T# _- [+ S1 [+ w& K, Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
( d4 M8 |' f2 X4 Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- V3 t6 Y% ~. l" b
& \! U4 u) [. }0 f% A
9 o& `6 Y9 l8 c! u, d; u
get-global-proportion) m/ t) z/ S+ u/ u4 g6 k: e8 u2 E+ ?
let trust-value
8 _7 N$ K# e9 R3 |, l, Blocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
9 s2 n9 b4 Q6 `
if(trust-value > trade-trust-value)
+ R5 U; C4 U+ Q1 ^) Z[set trust-ok true]  r5 Q( o. j0 H6 K! Z9 J$ w# r1 `
end
9 k4 A# ^: j" P+ ]
7 e+ D  N$ S" F. O6 K; p+ Mto get-global-proportion( J6 G  ?, p% F5 D& U6 R0 i
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
/ Q- i' I" {/ ?) C[set global-proportion 0]; v# P/ l. n9 ?# F9 s5 f
[let i 0, U6 ]' R$ C/ _# ?/ W0 F* ^
let sum-money 0
8 p: Z# K0 h$ H0 d8 Qwhile[ i < people]! _! S7 [5 ~/ H: e5 N/ d1 H; p. k! q5 f9 q
[- H, r7 y. D8 Q- Q/ A
if( length (item i
/ \7 {: p0 a/ v" P6 L8 T[trade-record-all] of customer) > 3 )

( y4 n) E! u7 `[3 Y& M$ z2 s, {# a4 I1 _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 ?1 U- l& C2 a3 R. B3 U' o. [
]
7 t* j% {/ u3 O9 ?# ]* g9 W$ z]/ t3 o8 K. G+ `4 V; X6 N8 T
let j 0- c" S" m( o, G
let note 0
0 p( {! a: {1 Q5 H" Pwhile[ j < people]
! @# t' A* |: ~: W* f+ s' d6 |* J[% f& B% C. q- z
if( length (item i: A2 _1 ~3 h& F9 y
[trade-record-all] of customer) > 3 )
$ }1 g; Q8 P$ r* H
[
( F9 y$ W/ D) n  [# aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)# X0 g9 {' z4 H. X
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ G# w) _  k6 ]# n! S7 J[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. [2 |8 X  P; ^9 P6 x# N6 c* e, c]
7 l# e" M9 ?' e5 N3 j" p7 W' x! i]% {$ ]5 o( i8 t+ P; m: T' y
set global-proportion note1 X; `. q% \) b  A, E. i
]
" U" y! ?. X; x- C4 X" Kend0 W& X- g! ?# a& ?, P0 j+ D# G7 w

% j) R: M  t6 I( A* @+ H0 r2 y! e  v' Ato do-trade9 ~; `; h, c" r  z( U) h
;;
这个过程实际上是给双方作出评价的过程
/ ~- S2 n# y4 W! M! W2 W1 D3 o+ N- Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% K' A& k+ @8 [! j2 \, b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 A0 [7 _6 n0 C1 Tset trade-record-current lput(timer) trade-record-current3 B$ T$ H$ a: G+ N' l
;;
评价时间: m; h- W1 z- c% T/ I8 V; T
ask myself [
# l6 }( ~$ Q% W$ f$ L) p7 Tupdate-local-reputation
( G, K% }$ |, W0 _6 Y/ J- E" {& ?set trade-record-current lput([local-reputation] of myself) trade-record-current
: T2 G! R5 _! w1 L& f9 R]4 ], J3 R! x' \4 r4 M/ A  s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 c1 t: S9 A9 a8 d! J$ _# V7 D
;;
将此次交易的记录加入到trade-record-one8 |: [& d$ M: P; F
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" h5 A7 g2 V% O7 t5 v9 H5 \let note (item 2 trade-record-current )
2 d, r* B  X" @) Rset trade-record-current1 G& U: {& Q. a5 u
(replace-item 2 trade-record-current (item 3 trade-record-current))
! |0 H4 j1 j; O9 ?
set trade-record-current# [% T- r# |1 g" Z- d$ A) ]1 ~
(replace-item 3 trade-record-current note)
6 M/ I* }  y1 {' ]8 k3 d$ E
: K0 \1 F2 D; v8 j4 Z" _% o' r* C
/ o7 |$ e1 y) Y
ask customer [
; [/ X+ g; ~7 @& P0 z  aupdate-local-reputation
; n: T- E4 h. ^set trade-record-current$ E5 c4 O6 u! j
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! w/ w3 j! o! N; [( v
]& U- q/ Y, L9 T2 D

4 }+ E  q8 B- w. l5 z! f5 u

/ ?7 x9 J! I2 J& R7 ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer' u5 b+ a% I: C# b0 S
2 J0 ]/ n$ R- r- y
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 W( P2 Q: k) n  R
;;
将此次交易的记录加入到customertrade-record-all
% M: ^# z, S& A: `end
! K5 K' ]  v* Y+ q5 `/ C2 c
- `$ T* J! b4 \9 m, w+ L, Wto update-local-reputation
5 p7 ~% [$ [7 N: d: Xset [trade-record-one-len] of myself length [trade-record-one] of myself
5 r- d8 d  O8 J- E3 i1 T9 u0 V2 y' F. ?  ]% `# v- {
/ D; G/ G+ P2 p' r4 z6 C% c) w
;;if [trade-record-one-len] of myself > 3
/ [9 F& `6 m4 k2 p& _8 O, d* g
update-neighbor-total9 G$ J/ ^% T( p9 R' @' l7 h" R0 l
;;
更新邻居节点的数目,在此进行, e  C" W! i) o# A
let i 3
7 Y. N: w  `, K6 ?& Hlet sum-time 07 u# a0 @4 E( k. J5 W4 i6 I$ o2 H
while[i < [trade-record-one-len] of myself]6 {/ \  `1 A) w
[
! }2 O& B+ D4 Gset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )9 ]$ C  t& Q4 }. v. R
set i
: N  U$ }. S! y% d) V, }( i + 1)

7 V- ~$ m3 ~8 {- b& w]! b) p  O! H+ U  R, m* V
let j 3
: H& W' l. q# Flet sum-money 0
: f0 W3 W/ P% d6 X" Iwhile[j < [trade-record-one-len] of myself]& ?# L$ v6 C6 [' Q/ e
[! }# A* S1 y; T$ ~7 N
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)0 r& V! ^0 [, C8 A
set j- }% Y: L# z" Y7 `1 u
( j + 1)

9 W5 i, y* h, \; k  _0 m2 f]  i/ c' Y5 m6 ], \3 X( `3 l
let k 3: R$ ~& C1 P, ]  n8 t. Z6 i9 e
let power 0
5 H3 z, K# J* H1 G# p0 ^% llet local 0
( `9 f- |8 }  P: k% |* k9 O- b$ owhile [k <[trade-record-one-len] of myself]
& ?2 g, `' |# F/ p0 E[
5 J5 ?1 o: V" L+ Q; Uset 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) . U- n/ U: A: j: C; f
set k (k + 1)% @0 q' t. `/ ?2 ]/ M7 r5 C
]
/ d& g0 H6 Q6 A, Y% gset [local-reputation] of myself (local)
9 g% k2 n) z( \( G2 x- Tend
  @& I' U0 a9 R) X; ?+ Q& K
" j# Z$ A4 e/ C7 pto update-neighbor-total% U, U; b- v, Q: @0 e3 G

6 x# r$ j5 ?5 Cif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
2 n9 S3 ~' l: }" D
# T+ S, {, y6 x; }& o

# z" K6 d: V: x- Zend2 K0 n% r; |( t( |# f+ D  K, |
: u5 o  V. d1 [1 I* i2 ]
to update-credibility-ijl
/ t+ M; ?" A% I; q2 ?" y4 b3 N8 B4 O
;;
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。
6 Y  E, L# [) a9 d2 jlet l 0
% Q  j6 j' n% q! e- Kwhile[ l < people ]
+ ]; |4 }3 ~% w4 N4 i7 l( p+ t4 p;;
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* E. c/ x, v' z  v  z7 m" @
[
$ ]1 e$ U+ K( I- K1 `4 ?* w6 {+ blet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 s4 W: C  p! B* b; L1 Rif (trade-record-one-j-l-len > 3); [# P# L( G# n( q. Q  S: r% \
[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
( _6 j& w* ~# U5 F" I% U6 Wlet i 39 O" Z9 z; r. w/ E
let sum-time 0/ h/ x  T: Q6 z* I5 T
while[i < trade-record-one-len]+ t4 p8 ~+ W, n  }1 e; `9 a
[4 ^. z: O! L( ?$ ^
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ b- c4 d* M! s
set i
" P: P5 l& ^6 h* N2 Z* M/ I8 k( i + 1)

" Q1 A  c; m% y]' D. p  M  Z+ l  ?+ U  `0 A, `9 l
let credibility-i-j-l 09 F8 ~9 A. ]: F+ [. G/ C! y$ h5 U- N' S. t
;;i
评价(jjl的评价)1 o$ J- ^% p7 L  U. |9 d
let j 3
$ ^, U, a/ Y/ p. q/ q* ]let k 4
4 Q: V& J: B8 A' b% x. J; }while[j < trade-record-one-len]
. S7 i! Q) p& {$ y7 G[
" O3 W+ X  H" L: Z0 \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
; i& @- j( r; g3 qset 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)* O2 j0 B5 C1 a3 ^- f7 W
set j3 X' q6 l7 F! L5 @
( j + 1)

' R4 }- q0 A% ~6 u% T]
2 W# y5 O6 U4 y4 v3 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 ))" g/ o9 ?# y0 s9 u% a! p. _

0 g0 H9 l7 T& g' x# s, L" \) L
, W" `# f0 K8 `6 K
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))7 v' T2 q! P1 L! x( }8 q# E
;;
及时更新il的评价质量的评价0 g  v& z9 t' H  v* y- _+ w% ~" N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- ]' e" q8 F5 M' |2 e. I
set l (l + 1)5 F- G( v0 g1 k7 {2 z
]. U/ P, X# ^; ~: L2 z; F  e" L
end
, y% l% r- K1 ]3 r7 J6 g6 v
/ u% x. B5 T7 x' s5 O: v1 nto update-credibility-list
+ a# I1 _7 w  \let i 0
  I8 ~+ w3 P6 H. h* k( v6 b" Mwhile[i < people]
( L! w% h' |  o, Y+ H* \7 o: V[8 D( ?8 m/ u$ a* T4 ?7 U( U- K
let j 0( O9 U- J5 w8 v: q% X2 H
let note 0& F0 k) ]% Y9 c$ c, M2 v* m3 a
let k 0
1 s" E4 I. q, p* z  g;;
计作出过评价的邻居节点的数目
) d* Y4 Q! R. O4 Y! Mwhile[j < people]
* {6 G, l' L. V+ n, k& s[0 r: v3 A) X' h8 p# m5 ?- I
if (item j( [credibility] of turtle (i + 1)) != -1)3 U& L& h6 @: S5 R2 y7 `( I
;;
判断是否给本turtle的评价质量做出过评价的节点
0 _/ w4 V/ b; b% ^3 N! [[set note (note + item j ([credibility]of turtle (i + 1)))9 ?; S( e- R1 u' e) p" T
;;*(exp (-(people - 2)))/(people - 2))]
' |  A6 L: @! K1 X- g; Y  c" z
set k (k + 1)8 ~) I  p  x0 i. t  K! Q8 I" l
]- }( W, {" u5 D8 T$ P" |  b
set j (j + 1)
3 ]4 {- V& `! T$ P" V]
( r6 y2 [5 e$ X$ F: bset note (note *(exp (- (1 / k)))/ k)
: {- v1 p  x; F$ F+ [! B3 }$ n$ _set credibility-list (replace-item i credibility-list note)
! x; Y1 O! Z0 c- _set i (i + 1)
6 M4 O0 a2 U( o6 o' V% \+ f% b) ?]* v. d4 A' G0 W3 D0 F/ r
end5 i$ ^8 T1 L) U/ T

" V7 U1 y( a' l1 z" I/ t$ e, `to update-global-reputation-list* Y# M( g# }& e/ a. w: J/ z/ I
let j 09 K) \+ Z* ~# U
while[j < people]) n: Y3 O# k# b" K) p  Q* f
[
6 B6 q5 j( X' K7 X9 w8 Klet new 0
2 Q7 c) D+ u; z9 E;;
暂存新的一个全局声誉2 J: x2 C, S' [/ p: c3 a
let i 0
2 ?* p/ T8 n" v' U3 hlet sum-money 0
2 f" q: O0 x& \. F, ulet credibility-money 0
- J, U4 t2 A+ U: J0 d% B9 j+ d/ Jwhile [i < people]
9 O" _1 r( g( P- Z[) P; H& I! {4 }( ^6 {1 Y8 j! X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! c0 F. t$ j$ z5 x$ z- O0 _: }set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" b  m; `1 ~' ]: q0 ^
set i (i + 1)& M: b$ I  `1 r  a/ I  E1 E! q5 i
]
3 X" {; u: i/ H0 plet k 0
( B/ y% p( W5 G. Vlet new1 05 d7 H5 V5 o6 Z
while [k < people]% C/ H5 o$ t% {! m+ d/ A
[: w2 X# w8 s# ]5 |* g+ E6 Y
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)
. L& p- }5 P; f+ ]set k (k + 1)6 E; _- e7 h: F5 p/ C0 U% e7 Y
]* e3 K, x5 q! D2 s( i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* {5 k4 c, M  }2 ~; \set global-reputation-list (replace-item j global-reputation-list new)$ s9 E% W' q0 ]
set j (j + 1)5 s4 A: E# F4 ]2 Q- ~! E5 s
]
- h$ \0 @/ a7 l+ ~& F8 @; Iend2 ^9 _% D% L7 d. ^  J0 O5 E/ q
$ z) @% b8 N; t8 {* q/ @
( g" O; L7 W9 c& j- x. ?; @
/ ?9 Q% b! ~9 e( i& ~6 m+ N1 [: j4 _
to get-color
/ p" n6 k! g0 ^, Y' A* g7 V: \2 h- M5 M0 o# T' W: R" ~$ R! Y. I
set color blue
6 ]' s& n3 A4 d/ f# N: B7 Z) R, g/ c
end
3 n" O; K6 U" g2 }/ }0 t; |' B
- h% c4 A# A1 U: a8 D4 Sto poll-class
3 k. L0 Q0 l+ O% O5 g, i2 Rend
2 y- z2 T1 \7 k3 m; \- w$ P$ T: m4 ]8 z# v
to setup-plot1
) r4 F; N8 @  S1 y8 F1 P# H" ~5 g; K9 v* r2 a
set-current-plot "Trends-of-Local-reputation"
* J. H. m0 }" A4 @6 E
1 J# m$ u# }7 |3 {) P) S' T. A
set-plot-x-range 0 xmax

+ a+ `1 k# d9 H% ]* N. o* m2 p% D8 [3 R1 B* p3 o8 n! o; u
set-plot-y-range 0.0 ymax
% r% o" L2 \  [) [+ v1 }
end6 d# T/ h5 z7 y8 S
* w, O: \2 R5 p& n, j
to setup-plot2/ F3 A; P$ Y5 V

$ |2 g4 |! _/ Mset-current-plot "Trends-of-global-reputation"

( s+ Z' v6 c4 C& i
+ p) L  d5 `3 m! uset-plot-x-range 0 xmax

/ C. Z* U) F+ @/ @4 O5 z* P. @* F" _* u6 d" L- \
set-plot-y-range 0.0 ymax
, T$ u% B6 J- H+ K! j
end
$ X: n( {; D7 _$ i9 ~: P  G
5 a5 u" k# i1 B% _/ o' }) ~to setup-plot3
, k! c& t( Q1 h0 T1 n, {+ U& _$ x6 T2 f
set-current-plot "Trends-of-credibility"
" {( D0 q! }6 E. i, w( H6 ]* E2 ]
* N3 _# @) R6 V9 o3 \; @- l( z
set-plot-x-range 0 xmax

  D. U8 U' o; |3 E7 {; i
* T+ d' u) B* r: qset-plot-y-range 0.0 ymax
2 o9 G. u4 N: Y; ]7 P
end
/ Z5 j8 g; p0 M7 o
, {4 N! ^8 c, n8 xto do-plots
5 R8 ^) r; c. M  N3 [+ a0 u2 a1 oset-current-plot "Trends-of-Local-reputation"- l' s2 i" Z# t" I! ?# M
set-current-plot-pen "Honest service"
; |6 V9 Q% Y, G* O# Dend
7 I. D6 A. J: }% T" \( t( f+ u+ _* z6 ^. h$ C/ E3 a. y
[ 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.. W& a, y' D( d! }8 x3 G! s

1 m4 Z9 E/ L8 B  Q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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