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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:/ l7 w/ R  a: B" x
to do-business
) f( X% ~8 P" g rt random 360" @2 t0 [. D& f: A! ?4 B  t
fd 1; J! B! E% s0 I" C
ifelse(other turtles-here != nobody)[
/ h. O3 Z" ?$ L7 d) a& I   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.
# V" m# Q! Q: |9 U8 z/ t/ R0 V2 }   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    - O! F  L! h/ O; [
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  `) b) N1 t9 Z$ E
   set [trade-record-one-len] of self length [trade-record-one] of self" q7 i! K! ~+ b
   set trade-record-current( list (timer) (random money-upper-limit))1 e  x- P8 L% z. w

- E5 U: i$ I( s3 R2 p问题的提示如下:
/ m  g# S# F# a$ _
' e, U7 u* g; @' d& \3 cerror while turtle 50 running OF in procedure DO-BUSINESS. I/ C; ^: d/ B6 ~% `+ b- ^
  called by procedure GO
# K; @6 P# s% _- b. ~OF expected input to be a turtle agentset or turtle but got NOBODY instead.
4 ~: c  ?" Z- }' t$ X1 F" v( p
(halted running of go)% y! y( t' ^2 U2 W% c
' [% H) B3 K! ^0 E: X3 R
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~~
  E5 |" s9 Q# ]* s. H/ j2 P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
2 U. e4 u- M2 S. A  Qglobals[
: O, L0 N2 ?5 j& e' exmax
1 X! Z; i$ ^2 z% V* ?$ m% E6 nymax0 B: a& u3 D) S: J
global-reputation-list
9 b: N" |/ T- L. K
% h4 l/ M! V2 p' ];;
每一个turtle的全局声誉都存在此LIST
5 P8 v. r2 A$ e1 _& Rcredibility-list
1 w: k6 q" x. c;;
每一个turtle的评价可信度
: h3 G4 M8 T0 a4 M6 {% g9 phonest-service2 c1 \: x+ @' A( ]
unhonest-service3 P  n6 ]% ?1 X, T! O. Y/ U) E  Q" Q* u
oscillation
# B& l6 e: a4 jrand-dynamic' [2 s0 P3 _7 T# [3 I- v' H4 [1 R
]
' I1 h9 ~- N/ I7 \8 o( d6 P5 G5 {
turtles-own[
) w) H6 L0 l% |4 [/ utrade-record-all$ |7 }/ Y# p$ X$ h- \
;;a list of lists,
trade-record-one组成
0 ?. g8 Y- N# J: f! [5 Ntrade-record-one
$ T( ?' }/ {+ G6 I;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录) U3 [" l7 w8 q+ [
$ e" k) ]$ V# B' D
;;[
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]]. u/ ]7 P( k3 f$ N2 B: ?% y  B
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]
# d- n$ L- x1 I& acredibility-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list8 \0 `& e1 H/ I, o
neighbor-total
. T4 A! i! ^) t8 @: u; h;;
记录该turtle的邻居节点的数目
% N0 @) ^6 y7 R5 x; a. Jtrade-time  u7 V$ M; D0 s& ~! A- K* C, W
;;
当前发生交易的turtle的交易时间
5 {( ^3 X* D' ^appraise-give# {) U$ t$ S5 }2 r
;;
当前发生交易时给出的评价
1 _- u0 U, Q. {" zappraise-receive
* ~! ?2 o2 @2 o& H5 q+ x: G  w2 v;;
当前发生交易时收到的评价4 g( Y7 K9 A! W0 [! {& d3 W4 y
appraise-time7 |9 `+ b# I: Z6 s$ [3 ?0 D8 F
;;
当前发生交易时的评价时间
* j7 O% `* H+ Q5 r) ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉# u% O: Y* b7 Q: p, l" s# w' v
trade-times-total4 u) }" s7 L3 s) U) {% s. z. Y: Z0 v
;;
与当前turtle的交易总次数' w9 s) j0 R! |) o1 L+ p( v' ^# W
trade-money-total# L$ X* v! s2 Y6 e* p) }6 L
;;
与当前turtle的交易总金额
  J8 _/ B, w2 z1 N- _0 Wlocal-reputation9 r5 y7 I- j* \/ C. s
global-reputation
9 i% K5 J0 Q# K1 ~7 s* X4 Fcredibility
: }* b9 G2 y8 ]: X: p$ _7 _/ a" b;;
评价可信度,每次交易后都需要更新
0 p& I; T" ?* g; Acredibility-all
7 z7 `* I- v7 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
, C+ |/ l* t4 \7 l; D5 Z, I, V
, G$ {* }+ f/ G! b' ]; V;;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. ], b6 K* r7 Q) b8 B
credibility-one. b, I! }+ f) Y- E3 l& i$ [/ k
;;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$ w3 b  G. M5 t" j' _5 T9 V
global-proportion; }* M7 r7 B/ z" h* H" L
customer
" z" W8 i$ @: K/ _9 g8 t- ]" ?customer-no; S5 c0 R; {' _/ X  |. Z
trust-ok' {& K1 |% M5 p
trade-record-one-len;;trade-record-one的长度
) R1 r4 H8 X6 v8 l/ u  J2 Y4 `  b- a]
' b. `. D7 n0 t$ W, E  U. v: J0 @. H5 p- Q; [& u5 u
;;setup procedure
  }0 y8 E% |; d3 J* F' ~  l8 }4 M
6 [4 J+ I: }9 Z" F* Z% l0 n% [to setup* }7 ?% S& L3 r# K5 c

$ r( A7 q' A7 ~, p) Zca
" `- H& J1 B8 |4 c2 {: ^
; X- n: w1 f; D) r/ L3 x
initialize-settings
9 ?2 _4 [0 l; B9 s. t% F3 V0 Z

# N6 `! w' I2 n" w5 P# {! ucrt people [setup-turtles]

4 |- T' t; H6 u. Q; N; a
: S1 Q$ H6 n3 n* T- ?reset-timer
4 u* d7 Z" ?% d! }! j! s- T

# X9 ]) I2 U* O- q5 s0 L( q" t# Vpoll-class
5 q. k7 v. U+ V8 x" B" e* K
) p, `/ d  ?/ {7 {' R$ S+ h3 N
setup-plots
/ T- `: f1 |7 d; K9 G6 @

  e' R/ U& V1 G( Z4 |do-plots
: M( G* r7 i4 o2 W. S+ A- L2 c
end
% |4 i; p$ R( g: h- K+ R4 v( d
/ J; ^/ ~# U8 V; uto initialize-settings
% w" I0 Y+ @, Y
; E6 M+ Q' ?: w, ~2 c* Qset global-reputation-list []
& V- i' v  _2 V2 E
% c  e* c& S. `( O- k$ }
set credibility-list n-values people [0.5]
2 X; I) i8 F, @8 \) N" T
" C7 T: U* ^+ b1 H0 B: i: N
set honest-service 0
% H% j9 G3 G7 N, M% j" n

  o/ x8 I; L% d. c- aset unhonest-service 0

6 o- w4 h7 Z8 l! h  w
$ Q+ o& I6 ^; h- q* O, g- Sset oscillation 0

9 R6 S3 B) q$ Z. Y6 F  v  L& q* Q9 E/ e, ~
set rand-dynamic 0
8 M$ ?# k7 F/ v! t( V. |. Y
end
+ R; ?$ J6 Q* V* B& \! R/ N/ n- D' z' y" g7 ~, K) i3 e' C+ b
to setup-turtles & V" N# `, {( z& E% C3 J
set shape "person"1 n- D6 I3 u5 G% y) q
setxy random-xcor random-ycor: ?; e* o! H8 f3 U5 i
set trade-record-one []+ i* o+ U% N$ y) `3 X/ {
  o) I5 X2 b! `0 R8 M
set trade-record-all n-values people [(list (? + 1) 0 0)]   u8 A3 g4 S8 Y1 P) i1 o

3 `; |. B8 W  m$ F' Nset trade-record-current []
& b7 G* e, q9 ^4 v. b4 b  z; jset credibility-receive []
0 L0 M$ X: f# _) J+ ]  }& x/ K2 fset local-reputation 0.5
9 s; N4 M4 r& }% d  sset neighbor-total 0
; B1 W* j6 |' p" q  eset trade-times-total 0
: C& q+ N/ m% Z' k- _4 Mset trade-money-total 05 i6 C" C8 s" }9 L9 k3 J* y- }& F
set customer nobody
) m- f8 \% _. u: Eset credibility-all n-values people [creat-credibility]
; C; ^- |$ r7 iset credibility n-values people [-1]
: Z. Y1 g' b5 d/ e. |# _get-color
4 J" j! e5 w9 C
, D5 x2 I9 q/ c; j: E
end) X5 F' m0 v: w
+ |. v+ W. p9 R, \- a9 v9 F
to-report creat-credibility! Q" h  x2 L: B$ A% M+ N7 |8 }6 F9 e
report n-values people [0.5]
7 E  K2 Y# P  p# K7 e; V0 Tend$ v; s' m# P, M% K
  |0 l; n9 b9 K$ p; F
to setup-plots
9 o6 T/ i% q& H" z5 Q+ H" |1 W. b# H3 R; O9 G" c9 h
set xmax 30
# Y6 u* ]" q. A' Z  l! e; T

% \5 e# f- ?+ Q( P; v; |. ]+ vset ymax 1.0
. t, L, U8 p& Z8 `: q1 d" x

/ w: x1 B" \3 ~3 Zclear-all-plots
! b* Q/ c3 _/ w! ]0 N

6 ?2 [- Y- X1 Y: Wsetup-plot1

4 c6 C2 q" {$ u9 g: `( t6 y1 c5 M$ J/ w
setup-plot2

; {4 r+ Q) y: r5 T) ], B' ^7 T, O7 j4 `) ]. q- ?  Y& K; b6 x
setup-plot3

$ S  d; d4 ~. k# p: Gend% \( d8 L! [0 m% {/ y

5 _" Z( A) Z# {% l8 C;;run time procedures5 L  D- a# }, b) V$ e$ \5 d2 `

9 P  _$ |. g4 U. @$ E0 g% Qto go' E9 f" {# y5 ?* A) l! l& T3 E
5 e( Z! j8 a: F' s5 v6 ~
ask turtles [do-business]
% e- v; @& z2 Y. k+ n1 |' o
end( D5 B+ j. S5 |- Q
6 L* t  ]2 P7 {. [" H5 L
to do-business . n7 q* [! L2 `4 ]& H: ]) }3 [
+ @& j0 d$ D' ]
. D6 u1 T1 ~! }8 ^
rt random 360

7 ^$ u7 \; E* w2 ?8 h- j5 t$ {  q8 h/ H( B) i
fd 1

7 V; `( d! {- {4 p; q
3 V# R+ g+ y4 e/ Q. V5 ]) Y. Jifelse(other turtles-here != nobody)[

5 X% s3 ~8 ~/ L2 y/ W% j" _" g1 l& ?, H* l5 X- ^
set customer one-of other turtles-here

& @' E* V) b) b  a0 `
: b4 R( U' @* G$ D;; set [customer] of customer myself

) t7 D4 B$ b9 ]% k2 B7 c; x6 D) [6 Z3 t! v
set [trade-record-one] of self item (([who] of customer) - 1)4 E( {  @* ^3 u$ R8 c+ J& u
[trade-record-all]of self  j, B% {: s$ i5 L; d0 g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 a* `7 _+ x, R, M2 T  E2 T1 [# l+ [. T; V. }& w# P0 v
set [trade-record-one] of customer item (([who] of self) - 1)) W: N& k; m2 _
[trade-record-all]of customer
6 [" R# ?9 x# g& b( s- a$ f
& Y- m. a' |( \! a. P  ?4 P
set [trade-record-one-len] of self length [trade-record-one] of self

7 z5 X+ {- s3 t# F& A2 \$ g; g7 |) a
set trade-record-current( list (timer) (random money-upper-limit))
/ B& [- ^" G1 G% f( l

2 }/ W3 J% e* Sask self [do-trust]
  Y+ D9 c5 k) U5 j$ s;;
先求ij的信任度
$ q- X" t0 I( u* u6 o. l: }; b; n( J% ^+ o- E- I* K9 R
if ([trust-ok] of self)2 E! E, Z. [. _2 F% b/ B
;;
根据ij的信任度来决定是否与j进行交易[
4 \9 t0 }4 g  L8 ?. Wask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
- d  o9 Q5 e" z0 r% B+ k5 z9 u; y. \. c% i/ @" O
[
# W$ U( w! Y/ s

2 X8 _3 p- c. ado-trade

6 N4 p2 R# d! U8 V* ~$ Z& T3 M. W, c" [9 W7 ]
update-credibility-ijl
/ D) E9 q% ]1 Y. I8 E8 h: I& y
' D1 V/ F  j0 u- l7 y, w
update-credibility-list
* j, V6 s; ~$ Y8 Q% r/ t

  I7 M  {" @/ J% z' [7 O- }* ~( _0 l8 Z/ d. w
update-global-reputation-list

2 L( t' t: D/ R# d8 ?3 o
; m9 ]2 G  \) Y0 fpoll-class
5 N* d8 O' Y; {7 H

: K. \$ L) \# E' @2 Z0 Yget-color

/ h  o' z3 s5 ?( e  u+ D0 ?* Q) J9 p4 p2 ]
]]9 A- v" [$ e, u; Q0 u  s( Q
6 x, H! d4 D' `  l& H3 ^9 }) \
;;
如果所得的信任度满足条件,则进行交易$ [# S( N6 X6 A- b" q, j
- ~* n% y' s  U4 m! g( p9 L! m
[

3 C3 m# B! s2 w: a; P3 s
$ ]3 ~3 [8 M7 vrt random 360

4 B2 o: E. S9 q, j# @# ?" v2 y% w9 D1 l$ {: }$ o* c' K
fd 1

. u+ x5 ?( Y3 U3 j8 g: k
; O3 N1 {$ H( E1 n+ I7 Q]
5 q. d7 ~( B: ]3 O% L/ v7 _, a+ d

3 b7 c6 M' d- W$ C% Fend

% y5 ^8 D. t0 W; _1 N. x# r- K$ u; r4 l" P! M* _. H' w  Q
to do-trust
. E+ A& z+ u7 Q) `- q6 y+ Tset trust-ok False# I1 `  @- J9 C$ m# I& j9 P- X# X
, K0 L3 n" e5 w, Z2 c4 q

6 O9 }* G% H% S& y/ t. vlet max-trade-times 0
, l+ K* T8 z, i2 u) ]1 [foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 @3 o% L3 r' j- [4 f) xlet max-trade-money 0; _; o* a6 f! ?# ]
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 g2 x) V; f: P, N$ p! o7 R6 ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# m! E) S) P6 n. Q. N! B8 S" m  Z  u
$ G! j3 N0 t2 g  _
get-global-proportion, |9 P( z/ M. i# f0 q: N4 T
let trust-value
6 ]( N- G. @  |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)

2 G, ?( y: \- T" ?% Wif(trust-value > trade-trust-value)3 j8 P- q4 H7 B
[set trust-ok true]8 r! m4 Q* o5 D+ ^$ H
end
/ X* g/ n+ h2 G1 ?: k! Z" Z7 O3 l+ W
4 S$ Y/ j! K8 ^to get-global-proportion
, |# \. d, }; U" Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 F3 d/ D9 @  D# k9 x/ g# Z[set global-proportion 0]9 A( w* ?0 @. w
[let i 0# C" b  \! e# M9 @6 j
let sum-money 0) K* ?3 X) A9 S% O4 K
while[ i < people]5 H% S' ?% ~4 K$ g" n. ]7 K
[2 X1 G4 m8 I) X' ^$ v) B5 ?
if( length (item i4 r5 k* \1 Z9 j) V+ z- I' e
[trade-record-all] of customer) > 3 )

% A& D, p; V  \1 j[/ b& z9 U# Q0 u2 w+ u- [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 N5 J0 ~7 y& [7 V
]
3 e. k* t4 ]; C* p! v]% v- `! F# W6 R) q8 {3 C* Y
let j 0& R; x. z" K- g  j
let note 02 q1 l! y4 s9 F2 w6 ]! y  C
while[ j < people]
0 m7 Y. @% @- q5 }, N[" k- p6 ^0 W5 x! j
if( length (item i0 u6 [( o  O+ [6 n
[trade-record-all] of customer) > 3 )
# V) m( h2 _! x* t8 j
[. M% B# ~; x: J5 b4 C
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 c$ W. O( h3 a4 R! N& ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 P+ C: t  P5 ~! L$ e/ e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 i3 l: g% _2 ]# H% G]
. `  S" W; y7 `- _1 A]# H" S" i' ~+ k1 Z- t7 [. a  |
set global-proportion note
$ |7 R) w5 C) C# C/ g]+ `. _+ `0 X% t. B6 o
end
' V! j8 U6 ~& s+ i! e# e8 W8 `9 }0 R" V. X4 C) ]$ J) M0 T! c0 G
to do-trade: `1 `$ ]0 [2 r' t& l
;;
这个过程实际上是给双方作出评价的过程
+ L1 I. ~( W) Bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 V3 v6 Z6 f6 I7 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 a) O% t3 S7 ]8 {set trade-record-current lput(timer) trade-record-current
$ C9 N# m! J+ E- t2 ~, ?2 v;;
评价时间
- \: P7 V" N- f9 Eask myself [
+ D7 q- t8 T8 E7 oupdate-local-reputation
+ F6 W1 X6 C& k0 g" T6 U9 @set trade-record-current lput([local-reputation] of myself) trade-record-current
7 m& o$ h, s0 J  r]
  ~% l! g, x. A! A* sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# }7 [5 m" b' c;;
将此次交易的记录加入到trade-record-one
' a# ~$ u! n( i. _2 ~5 Z! B+ hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 S. M+ I$ b5 M& d: alet note (item 2 trade-record-current )
/ C- s& U/ p: C* `set trade-record-current
9 J- F4 _) e4 e0 a% w(replace-item 2 trade-record-current (item 3 trade-record-current))

* z  d7 z) f0 b% [4 T; v0 Cset trade-record-current6 m' Y8 K  ~8 r0 z
(replace-item 3 trade-record-current note)
1 ^. d5 a1 c- _( T0 ~  ~$ _- D
$ u1 j; O" J0 n: [" W. E5 f
. ^* H: a: V; ^( q4 E, }) Q
ask customer [& [9 e$ }* o' j& {' Z; n& A
update-local-reputation. A% H4 T& q9 t5 @
set trade-record-current
. ]+ c1 ?) y! Q; g(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 F3 X3 g( f2 p& d2 Y]
; w- r" O" M6 i" x( F! s3 H) O
# V, }# n% a( @* o- d) T

+ G$ I' f1 @) p' h4 k% \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" P( T; K% n9 r' ]4 M4 t) i

" ?1 m4 U+ j5 S( D# r8 P( T" a) r- Zset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- T9 A3 Z7 E# v# K2 I;;
将此次交易的记录加入到customertrade-record-all* `6 n! V' B% d* S+ l* d
end
: H! f! H, ]1 `  ^. J5 s1 q
( i8 A1 \: z1 A3 w; ato update-local-reputation. n- d, `2 {/ R8 g( O' F  p1 u
set [trade-record-one-len] of myself length [trade-record-one] of myself
9 j' E$ \% n4 r+ n) q* y
7 P7 E. Y% q' i- w8 g+ B- z; P# ^- D0 }( e$ `
;;if [trade-record-one-len] of myself > 3

. B9 J+ w$ k" i$ a/ a7 L& G& Uupdate-neighbor-total
! a) x" J6 K  ?7 L( i6 h! o' C& j7 M;;
更新邻居节点的数目,在此进行
  K$ j; e7 K) g0 \- {* D! O9 Wlet i 38 E- h: f. o' h* t
let sum-time 0
/ W7 W  {$ R; c7 swhile[i < [trade-record-one-len] of myself], j/ u0 b  q5 A
[
( b/ }  M6 v8 J  Nset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
( c: c' d: w- Xset i
. F3 U1 \6 m7 F3 l( i + 1)

; w' L  j. u  C4 Y/ l2 R; i]! Y. l: j2 E$ @, \6 I
let j 33 @4 a  N( }) B, g; L9 @$ g
let sum-money 0
6 i; B2 @/ z- Y3 Z/ uwhile[j < [trade-record-one-len] of myself]
6 Y4 I# }* H6 E/ W[9 m+ O8 q% A9 `1 y
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)
" ]' }' N- Y/ N2 T, Kset j! q+ [  ?" I7 D9 e- i5 C
( j + 1)

. p2 B" H* o, U]6 H- h& T" ]: T/ v
let k 3
$ i& R! x9 C0 W4 z: t* Clet power 0
+ M6 ?  g" s& d1 |7 alet local 08 H3 e5 O4 {% ?- c' d  d; w
while [k <[trade-record-one-len] of myself]9 h0 ]3 J( C) ~
[) ^0 l7 ?) H8 X  b5 A; ]! ?- v- u- u* w
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) 4 p5 a/ e# u9 ~" V  ]* C- n
set k (k + 1)
4 z- [/ E8 x+ c# \]( D2 C' ?0 r6 X" L3 j) w
set [local-reputation] of myself (local)
9 k+ Z1 u' l. s$ Q9 vend1 {0 e/ A3 B2 ?  }+ R- S

  k9 E5 N& y' n/ fto update-neighbor-total5 @1 [/ B. [+ k+ f$ ^

; K  r6 a9 Y4 Dif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# ^) m/ V  i& o7 e- v. S$ e( N7 Q" r
, _( W% R( I  c

* N9 C* d0 _8 rend
: c2 p6 E/ C% k8 \+ B. i8 M* a" H. H* o) e+ C- q# e4 N5 {
to update-credibility-ijl + O8 {5 Y3 K- j1 g( R. ^. |8 _

% v* @- i. I  @; Z% U; C' c;;
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。  x. O+ N1 V3 k% f8 w
let l 0
* ?& [1 W1 W! Z  M+ ]7 @while[ l < people ]
& A2 T8 v! ^% W. {: ?6 e;;
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
$ q8 V5 F; m( y" R, `[
* U5 ?6 P$ o" ?0 {* y3 y( S. ?' alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)7 l, r  \3 {- V5 q* t
if (trade-record-one-j-l-len > 3)
( b9 U: l" F' [[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
( S0 @& _' _6 g4 B1 ulet i 3
4 c' i) N) u0 {let sum-time 0  b4 Y) v1 ~' \/ U' [2 z! F
while[i < trade-record-one-len]
1 Q' H  ~- Y. t; m) R. V[1 @/ @0 i1 \3 B: V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
0 h+ P' R+ s0 {2 s9 T. L1 D1 p+ Xset i5 q7 w( z1 F% r5 B" {" w/ F$ }
( i + 1)

; z* z( l4 J( p. t% ^6 h3 {! Q0 q0 A]
1 _' ~" W9 D0 c; z! Z7 ?) v9 v$ j  blet credibility-i-j-l 0/ U9 n- k! S+ U" z
;;i
评价(jjl的评价)
9 P+ R7 B3 S' k6 ~, g7 Nlet j 3
8 v& ^3 ]/ N' }% T7 llet k 46 s: G; o. L& O! E  e( m
while[j < trade-record-one-len]
+ j2 B5 o$ T3 {4 z4 ^& f[! Q" A: B/ _6 W" 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
- I  X0 k5 P5 Y& z. N+ l5 `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)" q8 t2 Q" l. ]& m: n8 f6 F% _
set j
3 \( `  \5 T) ^! I( M0 W$ g/ e" D( j + 1)

) B$ d6 \8 c0 [8 U. z; \* p. \]
) ?9 K" c& R- {  C8 P2 S6 fset [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 ))
) X" s$ W- @4 o# b) N/ u' @7 T2 W
8 G: g! J8 G% h) w
& S: ?$ X0 X$ D) Z! l& G8 ?2 w9 o
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))9 ]% C4 L; p/ |3 Y
;;
及时更新il的评价质量的评价9 o% C; b) t4 q* {: e
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! i& z5 U/ }- n( E
set l (l + 1)- T0 Q0 O5 M; B. O) W( s
]
! [6 s0 P% `- u2 M, s5 Eend; J: u- A5 [+ \
2 J; u; z9 O5 |& i0 |2 P0 ?" _
to update-credibility-list
& h% o, h+ a- `: ?2 N) @" f" Hlet i 0
7 I! u& S2 [& H2 L- gwhile[i < people]. i; a4 x/ l4 Q: Q* l
[+ y* f# \) Y8 |+ o( P; P7 v# w+ Z
let j 0
: U4 G$ ^4 t7 R. M4 ~: H& Alet note 0
  y3 O' M/ z5 N/ a: X5 b  }let k 0
0 r" n! H& T+ `* t  d. p1 T; E1 d;;
计作出过评价的邻居节点的数目
( o$ `' l1 b5 y8 S/ A7 h# D: Gwhile[j < people]
. H& ~9 K# I. W2 O" ^[
: J1 c* I$ z0 F6 h( T9 Rif (item j( [credibility] of turtle (i + 1)) != -1)$ y3 V$ t( \" X& t. g) D8 ~
;;
判断是否给本turtle的评价质量做出过评价的节点( w2 x; S6 \8 i4 F5 l  J
[set note (note + item j ([credibility]of turtle (i + 1)))1 |, M3 n* \( o/ W2 M" n+ w
;;*(exp (-(people - 2)))/(people - 2))]
4 ]+ x, p' g( p, u& G- x
set k (k + 1)' E5 i$ _/ i8 n
]' b6 N4 \3 z/ h8 N% X6 j9 {0 z
set j (j + 1)
( \8 |' n8 u0 B- n( X- d]/ G& X% X" y( ]" [, \: ], J
set note (note *(exp (- (1 / k)))/ k)7 I2 A. N+ f' V6 H
set credibility-list (replace-item i credibility-list note)
4 W  k7 F% U% t; Z5 A$ @* }set i (i + 1)% G( x8 Z' h* q; W' e
]
# W3 w+ V. L3 Y: A$ V9 W1 mend$ K7 Z- B' _% t, a

$ Q( X" T% h" B  O8 |& y% K5 S; cto update-global-reputation-list
4 n! [3 n, R, p2 b0 zlet j 0
; N. r8 g% j. E( uwhile[j < people]0 ?# w( i8 g4 q
[, I  @+ b+ h3 R9 t' N
let new 0$ g- e% F) |$ Z; \% E
;;
暂存新的一个全局声誉
8 C( x1 a$ ~+ L* Glet i 0
# K. B& W' d- b2 {- k! N: p: g6 Xlet sum-money 00 x) ]# k4 Q. V- G0 x0 e
let credibility-money 0; v8 g! F6 I2 }" ~( @
while [i < people]# o; \% Q% G6 B) D8 b$ _! a
[
" H: z. D$ ~0 R+ R. Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( A' d& X( Q2 L+ r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). l4 K& K/ I, X3 t7 Z1 L
set i (i + 1)& r2 `/ a6 [2 f/ H
]9 W* Q2 {: |6 z3 F$ w. M
let k 0
( O2 m& ~( y- q9 Q# ?let new1 0
1 X5 D! N( C2 g* w- c2 P1 f# Y# K0 mwhile [k < people]. c! m6 [6 E4 G
[
$ i. \  @0 N, o/ hset 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 J9 x; c) V7 g* w% k; c+ t8 T
set k (k + 1)
0 ]: ^1 K% W" U/ Y) w]
# q) H8 R& d+ s5 X) ~) [; C$ x# ?set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
6 y. }# }! c( U9 }0 x* }set global-reputation-list (replace-item j global-reputation-list new)  w4 x. t0 K9 I' y5 C9 c/ y
set j (j + 1)
2 E  r; ~3 Y6 I0 @]
) {' k: t: ?0 Y# u' ]% @/ Kend
# \1 |  f" n/ |) m1 \( o- B8 e8 C/ w( R% z5 e  Y  e

: |' W# m* n0 l6 ]2 s) W9 H$ e( R/ M6 x% h6 x+ F
to get-color
% c' \$ n& P1 H
/ }( Y* X& ]: w1 z  O7 Bset color blue

7 s% C6 [, o! N& y7 Y/ T' Wend) S, s* Y+ }( E

* Y1 ^. l% o9 ~5 m6 g; ~to poll-class
" z; [3 }7 ~1 {' V4 L8 e% i5 hend
$ A6 h" a4 L4 w& o: u% a3 f; y' ^3 C. W- o" b
to setup-plot1( @8 x/ O- L: R4 t( Q

2 R+ N8 ], T7 g9 s% o# n* Hset-current-plot "Trends-of-Local-reputation"

, S/ E$ }" R- s; H/ q8 M0 k3 z3 B, K2 @* \5 y8 P* h
set-plot-x-range 0 xmax

& T# {# E! R8 a# o6 |% }/ r7 |. o
set-plot-y-range 0.0 ymax

: o* ?( E8 n" _" zend
1 d9 E% M* j% s& T
: x1 k* i: l/ yto setup-plot2" O2 N/ N3 ]4 }

& ^5 O4 C* j* [% {# I/ B' w3 x. cset-current-plot "Trends-of-global-reputation"

$ n. K" q5 V% K9 r! x) H2 n
8 @1 U! [; t7 l& n- o6 Fset-plot-x-range 0 xmax

8 V0 H# y- {2 }( ], z' C
* a% S- W. U4 C0 C% Pset-plot-y-range 0.0 ymax

0 \6 j" O' ^. e; Send0 a7 `3 b, Z1 U. ~

, I( @/ K# [/ f: ^to setup-plot33 S- x: i' t4 y1 m
" \) V" e9 t/ J% J
set-current-plot "Trends-of-credibility"

+ h5 J" W" \5 L1 W* S1 B  l& o7 `8 H% a7 F
set-plot-x-range 0 xmax
+ a+ x$ x7 X( i5 I$ {2 Y
+ `6 z! i% |4 |4 Y! ?+ ?) s
set-plot-y-range 0.0 ymax
/ j0 ]4 U9 P* i6 V! j% ]! k
end
+ w$ l5 A  M: s8 h$ h5 q0 b+ u; t" s& q1 q3 i2 c1 S7 a0 N
to do-plots( _9 h# ?) q# B; F
set-current-plot "Trends-of-Local-reputation"
. v' o! Q8 r- p, Y& d& h  uset-current-plot-pen "Honest service"
1 s" A2 |7 v$ S* u- n1 K5 e, S; e* rend9 A' y7 W+ A' k

! a- N% }5 N( J! E( g/ \' @[ 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.1 ^$ n) V0 N' ~9 W

- R9 c9 g+ H% K" F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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