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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:" Z' s3 v! w( p* n
to do-business   n/ i' l% u: M
rt random 3603 e4 @# _% t) X4 g/ _9 `# g4 i2 c
fd 1$ S1 o  K3 C+ _  s3 d; S
ifelse(other turtles-here != nobody)[
/ y2 r2 u$ L2 V: @1 [4 B7 }   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.# q* a. c- _1 f! R: ~4 b2 ^+ x- m
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
  p& d. `' X) d1 Y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
* |5 b- N' C' b   set [trade-record-one-len] of self length [trade-record-one] of self
( R) Q( o: E, G% b   set trade-record-current( list (timer) (random money-upper-limit))
) D# [' O4 `' U$ A
- `8 J+ H# a5 c/ h( q3 G# _问题的提示如下:
6 x& R2 u( f/ k1 ^0 E' I9 d1 o" }) U
/ f' {* d( N( rerror while turtle 50 running OF in procedure DO-BUSINESS1 g+ [! b) {& O  Y* y4 V
  called by procedure GO4 e* b, h; |, L: F& }
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 {. ^: H5 y: Q6 g) P7 k1 k
(halted running of go)' T6 z5 s9 s' {0 d0 z

: T% `0 S7 S  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~~1 I1 b9 j, [( d& ~7 ~! r6 a
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
; q6 n" b* O; {6 nglobals[2 G! y' R  w0 j+ R
xmax. C3 d/ G! I9 i5 |; [. N+ o
ymax
8 F, a* o/ Q, ~4 a7 rglobal-reputation-list: K/ D7 X' E8 @/ f6 e9 C+ [) K
+ {1 J6 [6 g: P2 G$ b; I8 @
;;
每一个turtle的全局声誉都存在此LIST& t0 q2 O  p! j3 x+ s$ u
credibility-list
6 k9 `7 ?* X& w: M- q9 |# H& L4 n;;
每一个turtle的评价可信度$ l$ @& `0 X9 M; w, N: j$ P
honest-service4 `) k6 \( I, b, T  o
unhonest-service- W: _: k/ P( s. P
oscillation, s4 w; C2 D0 N- Y) {. U
rand-dynamic- G' c1 A5 Z* j! S) i1 i( L
]
) z3 Z! w+ M; x, p1 Z# Y$ _
4 `$ U" |6 R! A9 p2 n) t, {turtles-own[; |! x$ p4 H" H8 i) h, S
trade-record-all
) U4 v& D1 `# T7 i2 G8 u;;a list of lists,
trade-record-one组成; n, D% u1 ^- R6 F% z& d" f
trade-record-one
7 ]  b( Y* D  h3 x;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
: v9 k; [% G8 b
, S* {/ V6 o( y, ?& L% s) Q3 l;;[
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 @. Y5 y% [+ Q6 Dtrade-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]3 q) k- x+ y0 j+ a6 l8 S3 _
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 X$ l) n( E) K" m' I8 I; A
neighbor-total# b3 j  P! ]  A3 I5 H) A) d  a
;;
记录该turtle的邻居节点的数目
7 F) Z, w( o& D2 t: f0 }; ltrade-time
: l3 k% A# S0 K/ A5 g8 h, J, n;;
当前发生交易的turtle的交易时间7 }0 m* g# k, g( \: ~8 X1 q. L
appraise-give
5 `2 e% r7 ^! k( N  K. B;;
当前发生交易时给出的评价
8 ]4 K) ~9 Y( m3 Tappraise-receive$ X: y  c9 S; u+ \! e8 O2 i' b6 r
;;
当前发生交易时收到的评价
+ D( G3 ~" b7 J% o$ mappraise-time
: q! }! }9 v5 X/ N3 e& h% U; E, @;;
当前发生交易时的评价时间" M6 ?  g( F% M
local-reputation-now;;此次交易后相对于对方turtle的局部声誉; f1 k9 E8 E) J3 |2 D9 B5 w) q) y0 ^
trade-times-total( s; Z' g3 ^' N2 l: f
;;
与当前turtle的交易总次数  [9 V6 r! M+ I9 [) f) G& I/ ]5 i
trade-money-total$ @" d, i/ ?% H
;;
与当前turtle的交易总金额
0 q0 E3 _, |& K5 Olocal-reputation
' f" s. m7 S7 a" bglobal-reputation; T7 U. r  _" I5 ], F
credibility
, B( L& I' T; R7 a2 R9 [1 c;;
评价可信度,每次交易后都需要更新
- A5 f7 J+ A. R/ c( j& z& Y, w4 _credibility-all1 \; E, {; T* b: G1 w2 y; w
;;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
: _+ D+ i' s/ P$ R/ I7 E4 A& U. y9 t8 ]' ?5 x$ H
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
' y. L+ q9 b2 D5 d8 W+ ?) z" I  T7 ?credibility-one
5 W+ w3 I& r( Z;;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; T( ~! M- w* V! l
global-proportion
! Z5 F  [  g8 o+ e/ y7 ~# Jcustomer: ^+ s' N- [+ i
customer-no
+ \6 u$ a. `% @: vtrust-ok
/ s# t. L. z5 J3 w  G$ Rtrade-record-one-len;;trade-record-one的长度
0 K: {+ r! j8 j! g! W7 ~6 G) {]
; D% D) W7 g( z7 a
: U: G# B9 e8 j: {" l- X1 v;;setup procedure
) w8 ]' D: ^& @6 A) l' _- A
9 r9 a, v: s1 @' hto setup
4 O! ~: I: v) X7 h1 G5 n3 u/ J# ~. Y, j1 z' K$ a
ca
/ U; `9 A' H4 K

7 E3 m: |; [0 I" }) N( }7 y/ Finitialize-settings
2 Z9 p4 [4 B; s  C' _$ j* o

. B8 V# z. l# s+ ^' }+ L' K/ ?crt people [setup-turtles]

6 a8 ?2 `8 C: D% l. Y6 f) w3 r8 x6 l
reset-timer

; G" M. X$ d  \+ I% Z: E3 |7 C6 \& S" c9 `
poll-class

  O. N6 \7 e+ Z" ?
$ l* x0 I5 [, A3 Rsetup-plots
! r/ ]- v& P% `2 c' f' ~( H8 Z7 q8 q
9 E' W8 L/ N! l0 h1 ?
do-plots

5 s; z3 X9 l- z) \! Z9 [end; x5 c  ~, U$ b% Y

6 M- @$ x! L  C) dto initialize-settings
2 p$ |" x5 [9 A& w2 H# b6 H7 U  M& b' [, m
set global-reputation-list []

, P6 B5 v* s$ o5 g) |: P+ R, }
9 H+ Z' `: N$ s/ ^" B- g: uset credibility-list n-values people [0.5]

9 B" ?' z5 w+ d& r/ o* W: g' l# E: v' ]: O  ]: V% h
set honest-service 0
7 @0 [8 A2 K" ]% v6 P9 X

0 p  k; }5 z0 I1 R8 ^set unhonest-service 0

, s+ j; _0 h# l, Y8 ]& C+ |' b0 ^' G9 E0 G
set oscillation 0
9 d  P7 B: w! U2 n; F
9 t% e8 q. q8 G6 B2 w
set rand-dynamic 0

7 B" g3 S9 l/ m" L/ zend3 `& v! a' Q+ M

  G# F  |/ A  [( ^6 Xto setup-turtles / u% q7 C# L1 a0 \. c: d$ o% R5 ]0 a
set shape "person"
  o: A( ~6 N) G+ Asetxy random-xcor random-ycor
+ T' }( ?7 H5 x* ]& E2 o; _set trade-record-one [], \- B+ o5 c$ ~( {

* S. B/ N$ l  \4 P: g# z* Iset trade-record-all n-values people [(list (? + 1) 0 0)]   R7 V: m8 V) \4 L3 g* T! L# j8 A

  ~+ C& v! z# [) aset trade-record-current []
- ?1 i! a0 h6 B. \# Z+ ]5 Qset credibility-receive []
) O  n2 g0 D1 n7 a( c/ U" Yset local-reputation 0.51 O' d) e" w- O0 P
set neighbor-total 02 L1 g7 f2 a  j& l9 r$ Y
set trade-times-total 0
+ Z6 D, ~1 _, Iset trade-money-total 0
' D$ y- c5 f+ |, j/ S3 x7 r( M' iset customer nobody
4 W7 n1 ]3 I" Gset credibility-all n-values people [creat-credibility]
: R. n4 M6 D+ Xset credibility n-values people [-1]
) \& x0 `: Q  cget-color
& M+ G, M* P) [  a

/ W$ k& ~, I# Aend2 Q, h4 s  ?, h% j, f# z
' _: l. E3 H8 H% R6 \& b% O8 \
to-report creat-credibility) h" Y% n* @( m% q: _) U3 i, }
report n-values people [0.5]* H# ^' b) [* {& t
end8 ]; S3 O& m8 j5 V$ s: ~" P$ q0 c
: `& w6 I$ Z! [
to setup-plots; v" J  X+ }, j, {
; Y& K7 u5 g$ w, u/ M
set xmax 30
; S; o) O8 S. Q8 _% O/ J
: d$ \* L$ \& G
set ymax 1.0

7 ?* C6 y6 q& b9 \0 [3 d5 L) W% t. X, ^) ]! V
clear-all-plots

+ r0 A+ m* t" J4 v
9 f1 E/ B; C! f; b# I0 Y/ k* Msetup-plot1

3 K: t. s! E6 U/ U8 _# o, Y' D: N2 w9 ^
setup-plot2
. U6 }' |$ k# N) ?$ y

' n! g* P; f" n* n+ i8 s( _# n( @setup-plot3

+ d: E! H2 I7 _' |! g/ \end
5 M. ?$ a) l6 S! t. }# E
. w, L+ J- K( \9 a) C. k;;run time procedures8 y: F$ q1 n& b# m1 X6 Y- E" F) [: z
1 R' B( P3 {' H. @, w
to go
, b2 p: d8 e* @( r5 [8 t" m7 h3 `6 ^$ `+ R
ask turtles [do-business]

9 P/ {8 a2 Y5 Y6 @end5 q1 Y' T$ q3 {9 {( c" Z

. j7 C* Y# a/ b  k/ Sto do-business
" d4 b) d7 |/ R% P2 m% b. O5 r8 h

! a& n6 s$ N$ m+ r9 p0 O- |
4 C9 J$ r7 q4 B+ b' grt random 360
+ ?( T7 u, z+ x

+ a7 T! P! z; |, G1 ]( E' n. K. ^fd 1

, `1 A+ g; K& ^: {9 `& A* G9 d( P: D8 U5 v8 D
ifelse(other turtles-here != nobody)[
$ M6 S; q( a5 ^
4 j# P6 f" H- C/ n4 @
set customer one-of other turtles-here
3 J0 i. B8 p5 M! Z8 `
+ R5 }$ y9 u$ t7 z7 v
;; set [customer] of customer myself

0 |- P- K/ A5 B, [6 h; n0 S1 u; n3 i) K
set [trade-record-one] of self item (([who] of customer) - 1)( B, S: r5 F$ m0 w  \
[trade-record-all]of self# V8 I+ p! b2 ~% ~
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
2 m& b. t. e% N! j! a8 E" s) Q
4 J0 @, h8 T* b) s% r5 x
set [trade-record-one] of customer item (([who] of self) - 1)
  q3 t; p  y, `3 R, |; D[trade-record-all]of customer

) X  I: |0 C8 F) w  f3 U# Z
* t1 W$ `/ U: ^, ^set [trade-record-one-len] of self length [trade-record-one] of self

. x' r* B7 D- I% b4 ?
: b. H" e8 A. c( Cset trade-record-current( list (timer) (random money-upper-limit))

6 `& A! N4 k* M6 |
8 G4 c: j$ a; y% q! _ask self [do-trust]
1 L) A4 s6 a5 X8 D+ H;;
先求ij的信任度
0 e) d& A+ L: e2 I9 n' S0 |* u# {# o5 C: A
if ([trust-ok] of self)0 `! \2 J; h4 q" Z$ Y2 l* b
;;
根据ij的信任度来决定是否与j进行交易[
( ~4 v. @7 o- Xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself- J# H( R. J% g+ {, c& q+ }' I
3 M0 h$ _/ S* N$ e$ `1 l+ n+ g
[
4 B! R" Y; `0 I2 G9 ~6 V$ [

& Y; p0 h: ?) _, h- \$ p: ^" [  h8 }do-trade

/ @3 D! P" |9 [4 K) P6 V* a4 f& M; I9 k# }$ V, k
update-credibility-ijl
2 V2 z' {. _5 K: I* @
" S" o' m! w& S" P1 H2 z+ A* Y, Z
update-credibility-list- t2 i+ V  G; d! S9 M: ]7 _

; l( s, o- S. R; g! a, R3 X- e: V# M& @/ J. `' ~% o# Y7 Z
update-global-reputation-list

. F  X1 O1 d& b! }) w& B5 i# d# d2 F2 e( T
poll-class

9 r9 {% `$ a1 n# u7 E5 ~# \# U# L" D/ ]. ]! ~1 a/ A+ h" O
get-color

3 v4 \4 }# W+ s2 A% b, c, E7 d0 @( M7 |! T8 f9 B9 q+ P. L
]]# s6 l# p7 A3 g
8 j8 Y, B; l4 r% D+ |: ^
;;
如果所得的信任度满足条件,则进行交易
: y1 d* r7 _' w7 Z# \1 P; n" w6 L; F  K1 e7 y
[
% V% I9 S: V/ y" N7 e% D2 I
4 _; n& g9 I* X1 N4 Z
rt random 360
1 G6 L% {9 q/ ^; g7 j+ E' `9 k
$ G! a: G2 j8 _
fd 1

( j& p. q% p" ^- B$ n; C
* P1 g* Y$ [! T3 d! x- Y2 S  V2 B]

$ h4 p+ P. ]. {  t1 Z1 ~' Q7 G' n# d# {5 g
end
4 w. n; F( G0 r( D& X+ ]2 E: j, K! L

8 Y( I1 j9 f1 v# rto do-trust 7 F9 T2 _. u2 N4 x
set trust-ok False
" m# w- N+ L0 F' }, _3 F. ~7 M% ?) ?

3 @9 C" M1 h/ x! K3 `+ nlet max-trade-times 0
4 B5 T" n3 [& R- O; N; nforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& z) k+ Q: }; a# ]' d3 X, {
let max-trade-money 0
# b" O* F3 P" @2 b  {foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
  u  N9 D0 A( Ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))4 A$ p0 @, q3 N- X) c$ i$ e! y
8 P' [2 K* G5 P9 z* m9 X/ z- C

, f7 d3 c. ]# |# Zget-global-proportion0 I: f! z. X% n% _( V% K
let trust-value
  v( j5 o3 O$ \& W/ {! Clocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
6 o6 o, R7 G7 j7 Q
if(trust-value > trade-trust-value)
  {0 x; [& M* p: O- E0 f[set trust-ok true]
  i$ ]) j& E) c& l- k: ?: fend: ?# ]8 O  d' C& |

# ~5 o! Q3 j/ k) X9 `# `) w6 nto get-global-proportion
0 C, v' I8 r+ ?ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): S' C! e( b# D4 H2 y8 [
[set global-proportion 0], Y* Z7 f; v0 ]4 N; b6 w6 ~
[let i 0/ n0 Y& V( E# ^, ^
let sum-money 02 o. d5 A( F/ {" H% q
while[ i < people]1 o! f! [  T3 W! {( l8 X6 o
[
8 x: G- i% j- y! Pif( length (item i/ f2 d' s  V8 s, M& k/ \
[trade-record-all] of customer) > 3 )
& T! b& Q9 q9 P* |* X2 D
[( t2 v1 a/ U% m6 y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ z) l4 p; B7 P5 D, ^7 u$ H
]
0 p( G* K% p, @" ]]4 u: N: V9 f2 K$ c0 C& L' _
let j 0
: d  a( T, g+ Glet note 00 ]' o. K6 F# X3 z+ J8 b
while[ j < people]  |2 G* C" [  I
[: u7 D; g; u- w# O
if( length (item i
) b5 t7 n* E2 I1 {* X[trade-record-all] of customer) > 3 )
" X& F7 T- E5 }! E
[5 E0 u4 i* w& j( X/ h, a
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% z: Z1 y# x( |9 P2 l
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
; T- h: }( m8 ?5 V[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' f, y* f3 j3 Y" @
]: `7 m' ], [; @* A$ c7 u
]
1 ~3 D/ |1 ^0 t. [  B% ]$ _! |1 Sset global-proportion note
4 f/ H. P1 I9 G6 Y4 T]: Y. a0 ^2 ]( u% q, q) i* A0 l" R
end
$ n' x' I2 q0 B3 V
+ D( E3 n0 B& Q/ e: Sto do-trade
* b  w* g; v+ C, n; h2 q& E;;
这个过程实际上是给双方作出评价的过程4 J5 t% h7 e( e& B2 |5 p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 C  }7 W: K  cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 G3 Z" C- i8 B9 M# C4 b( Lset trade-record-current lput(timer) trade-record-current5 P) D: v! N1 ?6 K" h4 q- T; p
;;
评价时间3 f* B- x1 V( `: O
ask myself [- ]! q5 }* T* B9 W7 B
update-local-reputation6 T; p: |5 ~6 t4 W( R
set trade-record-current lput([local-reputation] of myself) trade-record-current, w& d! \  \. S6 N
]
( {; ^! \( G2 S4 L) W0 k# ]set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  X: I/ q1 \" M7 H3 R# y;;
将此次交易的记录加入到trade-record-one
  s; e$ ]/ }3 r7 q8 o, v% bset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
) d0 E$ e/ O. H7 T( f! x3 V4 ~let note (item 2 trade-record-current )
8 h( F& X4 K/ I$ _2 m0 g0 M3 ^set trade-record-current  M7 h" X/ V, Q6 _4 Q
(replace-item 2 trade-record-current (item 3 trade-record-current))

4 S  Q8 w' A. U& Pset trade-record-current
  u) n' W7 J- I(replace-item 3 trade-record-current note)* j7 a9 C0 p$ \6 j0 n' T. @$ |
/ b6 k7 @) I* J* \: ~+ ?

3 i3 P! u( Y1 o6 \1 Q( Q: _/ X! Y5 N3 z4 Rask customer [7 P1 L: `3 q% G  Y
update-local-reputation. s# a1 p( ?! u
set trade-record-current
; m) {* X( y( w5 A6 B( n# N(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ I# y8 R: v/ y  v
]) o! F) J8 j" X6 J$ I* G' m
0 y5 l$ T) d6 m- Z' `
! y) n& G# k3 w* I
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, c, {$ a! O8 V
5 v- d# C& K( _/ b0 A% |. g
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; R: O, k! W% |5 f* s# `7 f& v. C;;
将此次交易的记录加入到customertrade-record-all
& b$ ?. }& e# I/ S: Jend
* x# D* x7 ]6 ]+ S  g$ e0 l! N2 P8 t( ?6 G' ~1 ?$ U7 G
to update-local-reputation1 D+ G. G  X# z1 S, Z8 \% C7 l
set [trade-record-one-len] of myself length [trade-record-one] of myself+ u( {+ U3 S5 C4 A

# B; c. s* q$ h! C7 h' f, F; L: A- E0 o2 v# Q
;;if [trade-record-one-len] of myself > 3
2 h' o) r9 v0 @: R! u
update-neighbor-total
( x1 k7 N  Y9 w( t7 l;;
更新邻居节点的数目,在此进行
/ k) L/ ^6 q. ?2 mlet i 32 o) {$ x, f0 Y, p# J; N
let sum-time 04 F8 y) J/ j% h& Y9 P; j& O
while[i < [trade-record-one-len] of myself]
% A: \( D$ y0 P7 r# ]: x7 W[" j; `/ Z" `, G  d7 p5 p" r# D6 l9 v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
+ t2 Z: `7 v5 bset i" {  T5 x! b  t: W0 y/ S! M
( i + 1)
2 G- H6 O0 j( e* p3 R
]
& X5 t( d) c: k% F" @, k' Slet j 3
5 F3 e- G0 x& P/ B% y  _% Ilet sum-money 0# R9 b+ N4 B& e* r
while[j < [trade-record-one-len] of myself]
* r' \% i/ [% g7 P[+ E9 y; R# V6 R; t3 A3 T  o
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)! L2 y6 `* _1 i" H) V
set j% |4 ^9 l2 ?' x& U7 l4 c
( j + 1)

& z3 s9 C. U, o]
4 W9 e( D! n) g, O8 N2 x2 U( b3 O: n" mlet k 3
4 ?8 U6 D- ]0 A# j0 wlet power 0
. i; N1 Q8 ^6 g+ N9 O0 Clet local 0
. M7 U( Y! X+ e7 s* Qwhile [k <[trade-record-one-len] of myself]
' U4 Z% R; i, O  ?6 Y; u% |[
3 B0 E5 S# u8 a& z) Tset 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 }8 d& h, U5 q* U6 p
set k (k + 1)
$ ]7 {* r! `. D0 R/ k1 i]
! H& j3 J. W4 J+ `3 c& z- h, S/ hset [local-reputation] of myself (local)
% v! K# E7 S6 [- V4 aend3 W4 n2 [7 O: m/ N; R/ l; K: J* Q

1 q- o2 M4 ~& |$ Wto update-neighbor-total
' D5 N4 c% O% `1 |, o  \: C6 A' d; |0 s/ M# B2 j3 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 ~! ~4 U2 @: R0 D  |- x# k" ~$ C
) O5 H4 p4 x  z& r( w, i" ~. `0 ~
) p8 F: W% V3 g, u
end; n1 Y0 M9 O. }  |. i) C% C

7 h( V" E5 w, qto update-credibility-ijl 1 X9 {, a6 Q. U6 L" C) \

1 J# I: h9 x! ~6 R. X3 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。8 f# m# |* I3 A' Y0 C' ?
let l 0* T  O9 ^* U% n2 G% N' k
while[ l < people ]
  O/ W* q4 u* E7 ^2 i" }4 S7 f( I;;
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0 L1 x% \& `, z9 a* L& h" u
[9 f4 X- u  T! G2 @0 G0 ?" b
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* U! [# o( w! p# G; o* hif (trade-record-one-j-l-len > 3)
% n9 z5 |7 \( J: X3 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) t, z+ m5 X) V5 H7 m$ D+ z3 P
let i 3* A( F9 c1 ^7 u( W* s! E2 a% M
let sum-time 0
' `" P% c6 `3 o  k/ B/ |' h6 o0 iwhile[i < trade-record-one-len]
( K! {3 Q& j  q. }4 \4 x[
) A" ^" s! i. z9 O" cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 u& O- b8 V% Y" U$ l
set i7 m- ?5 M: \7 a( \4 F/ t
( i + 1)

% P' {; C% v; }/ j: q3 y) g]5 ]. h1 N  b  ^3 W7 U+ C% o& h7 ~
let credibility-i-j-l 0
9 ]$ r; t% l$ q;;i
评价(jjl的评价)& R) S- b8 K6 \( }; D
let j 3" E1 x8 d8 l0 _3 I
let k 42 z2 A- _9 Z5 h9 c
while[j < trade-record-one-len]7 ]% f, j# |( t( m6 v
[
. z: m5 D/ k5 Q, Fwhile [((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
5 u/ H" O+ Z- ?1 s5 Oset 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)
& T# Z: ~; I4 }set j
5 }- L: O; N# \( j + 1)

% o. D6 B$ {6 J, F( P) ~2 D& a]: P3 Q8 d& W0 n6 f
set [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 )); C' B: t' y2 \* _3 M
0 y4 W! k! k7 f2 D" {

# x) a3 O+ N/ o) ]let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* g) z3 I/ U0 \  M. {;;
及时更新il的评价质量的评价
+ P+ R7 |- w6 @2 |set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( d, ~; e$ q, o' F$ b0 Q
set l (l + 1)$ v7 K3 j  V/ ~& u' ^% c
]1 [$ w) @) K; o- ^
end
; Q! y( r: y+ L7 V6 H; m
, r4 j1 N5 X5 r  C4 d% _to update-credibility-list
! b: J7 v% i; G% m# r, t. L0 ^let i 0+ [# C; \1 O( A& E0 w0 O
while[i < people]
" p+ u, c1 D$ T" I9 |[( M  \: ~# V; o- c
let j 07 h5 c% Y0 [8 |; N5 c& [/ |
let note 0' K* Y; V1 H* d" i3 e+ B/ B4 @
let k 06 N( {/ @) l% s$ p! k
;;
计作出过评价的邻居节点的数目
0 r4 O! t$ r# ?& ~( h% a- J1 ?0 rwhile[j < people]$ l2 [6 L3 G$ @  o5 I! g5 ~% z
[
6 W2 V9 z, s) r# Aif (item j( [credibility] of turtle (i + 1)) != -1); i4 i8 t5 b' N9 V$ ^4 J) b
;;
判断是否给本turtle的评价质量做出过评价的节点
( ?2 z2 S3 \# w# @3 p7 p5 o0 k[set note (note + item j ([credibility]of turtle (i + 1)))! W& h$ Q+ h: x) C3 c0 O7 f
;;*(exp (-(people - 2)))/(people - 2))]

5 ]" e; Q8 _% M( z: uset k (k + 1)
2 `" p2 R- _+ @. \* X" q' c; x( D]
3 j) n# s/ A! ~' a, F% Zset j (j + 1)# |* U0 _: Z) b3 Q  V
]7 e3 u/ N0 }1 a
set note (note *(exp (- (1 / k)))/ k)8 {& \2 \* c7 T4 S5 o; g
set credibility-list (replace-item i credibility-list note). b0 v% N$ v6 ^8 J) |
set i (i + 1)7 V5 u+ Q/ ]" m# ~& F
]
* D* r* H( x" I9 s4 R# Mend& V+ T. t5 g* r
% p7 v, \' C# e5 Q
to update-global-reputation-list
. \( i. C7 k% elet j 0! j/ y6 Q# o0 r
while[j < people]
) y4 g8 k+ ]9 c- y/ ?[
( Z, X6 [6 A$ Vlet new 0
6 @  l$ t  L( M6 t9 X6 l, Z' P% ~+ E;;
暂存新的一个全局声誉! }3 {! {# P0 x1 t7 R8 Y5 F9 O3 w: R
let i 0
- T6 p, S. D0 a( E! v( \# n5 clet sum-money 05 G; G5 L7 v( R- {
let credibility-money 0; m0 s& z' C7 W
while [i < people]
$ I5 B/ `; O( D( b. F( \8 S[
1 T7 B9 S7 }+ j6 Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 p- M' O$ k1 Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))4 k  E- t: o8 n# T) J
set i (i + 1): ^3 s+ p, j0 A+ X
]& f4 e5 J% Y5 Z% C6 x, y
let k 0" |5 I$ o" P3 X( z$ q* d- M! N- l
let new1 08 U5 r/ P( B8 H7 L' i6 D: q
while [k < people]' T; m+ U8 y, }2 k1 {* a$ b
[4 g9 V$ u% O5 g& m6 ?  W
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)# [! |& \" D  Y# n9 p/ k  {
set k (k + 1)
; {+ {% A( b- ?]
. B5 ?$ y, u# E2 V# x/ _set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 d  A3 [& v6 K+ I
set global-reputation-list (replace-item j global-reputation-list new)# ?( P: c( D$ e5 T2 g2 Q2 T) P
set j (j + 1)
9 u+ t2 f1 `) M]; U6 b. d2 O5 o% G3 j; b
end
! M4 V/ k- ^! f. X% F$ j2 G  X' a' x! G# c' V5 I5 k5 n! ]: Q9 ]( |

9 T  Q4 Y1 `2 G+ s
% f, [- o& c7 Dto get-color
$ S9 _( G4 ^% t& d( @4 U3 t. U9 k/ L: W# y( J: H4 }
set color blue

: p2 {  }, D* H  t( w4 U& u+ Q" O; }end; \' J: g2 S: R; Q( ^5 u$ Y

5 Q9 B6 m  s! q. y, ito poll-class- [  r1 U, L1 C6 n& Q& _# q9 S8 [
end
. @7 `; D# E; R. y9 T5 H* v
, k6 I6 {. d* w/ s' t/ dto setup-plot1
1 N, D# S( _2 {" _1 Q- f; p8 R, g' E4 w$ Y4 T6 U0 Y- a
set-current-plot "Trends-of-Local-reputation"
1 W  d4 l, C) I: m: |4 E
1 v0 _% X: f* u& y
set-plot-x-range 0 xmax

! k; W! k- w7 m! @
! w# K+ ~  }$ Z- |set-plot-y-range 0.0 ymax

8 O/ p  U$ d! }1 o: k9 gend+ |1 W: B8 d  ]+ H9 C( u3 d

& N4 V: a7 v4 _* q1 |to setup-plot24 Z$ B. c" [8 V7 A* g  E, D. e) m

7 i; E6 f8 _' E8 K* Hset-current-plot "Trends-of-global-reputation"

( J+ @  o! u" x5 K" l' F2 }% k* x6 j
set-plot-x-range 0 xmax
1 O. \2 _/ X; h0 e6 e

- u; G* K$ s" b8 c. qset-plot-y-range 0.0 ymax

+ w" ^& B5 z: z2 tend% m6 ~$ q" a. P) w& V8 e5 k2 C$ ^

3 P. v* w8 |* _; dto setup-plot3
$ H: Y1 p+ a, C& B! c9 j0 R7 s/ X' T) F. P- \
set-current-plot "Trends-of-credibility"

5 l" @* I0 M, f; U6 C8 I& e! N2 _7 q1 B& Z) p! e# I3 V
set-plot-x-range 0 xmax
3 R2 x7 R9 Z( U+ x
/ |) i+ y5 Z2 K+ L2 j
set-plot-y-range 0.0 ymax

- F. n$ m, M) Y, Zend. `6 `1 U. z- I2 l

' k( \/ {* E) G1 D# Hto do-plots2 e# [5 E1 M5 A9 Z
set-current-plot "Trends-of-Local-reputation"3 C; r/ t$ P/ ?5 o
set-current-plot-pen "Honest service"
: j7 h+ D) S; \( Iend6 a% t, C! s  m, {/ j# e

8 `3 w' h+ k5 ]' ~[ 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.7 n  `, m! M0 Z" r( D  M  |( Z8 a6 `2 y

; V7 Q/ A4 A' @; `1 _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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