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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:! q. T# C( a3 C! b
to do-business
$ b+ e) m, ~& S5 `0 y rt random 360
8 \- G1 c& T* n: q fd 1& a4 Q8 C& B# o! G8 R
ifelse(other turtles-here != nobody)[
9 F" P7 U( Q* q5 ~; @   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.9 p6 H( |) E% \( B
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    " ^: I$ f* H& m$ u# F/ m. V  K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# w8 i5 c6 m) {: {   set [trade-record-one-len] of self length [trade-record-one] of self* O$ v% N" n7 E8 i
   set trade-record-current( list (timer) (random money-upper-limit))$ G$ y1 \- Q! F2 b3 h% ^
- o& f' v, h: y: c$ C
问题的提示如下:9 p1 o0 \' f; O4 e5 ^" E

4 v& v* [6 e3 Jerror while turtle 50 running OF in procedure DO-BUSINESS4 L. t# a1 a. J1 u  {, _( m
  called by procedure GO7 Z/ }' P, }( k, v3 ]
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( Q+ B2 ^& E; W' F+ \3 s- o+ G
(halted running of go)
, ]: H2 }+ N) Y  G# R0 {9 r# l+ r( X# G* G- I0 J- ]( B
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~~
  i* V2 t* M( N5 p! s+ H( _8 ?/ y- J2 V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' ^- t% Z3 e& h! O. d: F7 M, i
globals[
3 T; w5 b9 S' z4 p# m% Cxmax
, c$ k4 n9 ^& L7 K. P) nymax8 C! k7 t: ]9 \  @- O
global-reputation-list
# d( m  Y/ _. q4 A9 j$ P: T" u
% [0 Z' w$ e$ h;;
每一个turtle的全局声誉都存在此LIST1 ]: O! o9 K7 K( c+ K6 O- ]/ N
credibility-list' H) w" a' d0 k" R+ p& {8 m; z1 v
;;
每一个turtle的评价可信度
* H3 Q* C% j4 B( L% b7 H. nhonest-service0 J$ ]3 n: l2 U! h
unhonest-service$ U$ r* T5 s3 w: m
oscillation
* }. S( i# Q& \! ^' j( Qrand-dynamic
6 ]6 U4 U7 u5 \4 N]
6 ~2 z# O" i/ F. \7 }) G: [! c- L2 N" |
turtles-own[
) J5 P' u( P+ g" z1 |3 l, I. x6 f- ctrade-record-all
3 C% j  v2 i* A4 E* I; ?0 Z;;a list of lists,
trade-record-one组成
4 V6 i' p% H, u: {trade-record-one0 q5 n) N' a& \* t
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
3 Y3 k1 L. }+ V9 h& [8 M* n4 m' X5 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]]
# L  k# S& P; h6 F/ q& vtrade-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]! y8 ], t: d' A! L4 o
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
9 J; t) E9 Z( U; aneighbor-total
  |4 ~. O4 i, a+ c3 n8 u9 l;;
记录该turtle的邻居节点的数目
/ {8 p. |7 h4 F9 }' |" c" ctrade-time- G* ^- Q$ j  F6 |+ W5 O" v9 O2 p
;;
当前发生交易的turtle的交易时间% z% y4 \, c! F, B9 f
appraise-give$ f! f/ [) {! \* j  O$ t, Z6 h' `
;;
当前发生交易时给出的评价5 a, Y% z# ^( S$ A, v* `3 L
appraise-receive
- f. H. d7 p- R6 G" C0 v, D;;
当前发生交易时收到的评价7 C! I( ^2 I. ]$ U& }
appraise-time
. w  F3 S  f" j4 l8 `9 b$ N) x( v;;
当前发生交易时的评价时间
; o$ |+ `% L, h) A1 W, k) I8 jlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 V/ ?7 `: S4 u( f3 P9 `2 S* ztrade-times-total- W3 S$ g2 F/ _& A' {# J# N' G
;;
与当前turtle的交易总次数1 Y9 y& ^& C+ E( l  |
trade-money-total
3 {/ \# U8 h( U. D; S;;
与当前turtle的交易总金额% o7 \  G% ~5 E7 ~7 k9 h8 o! Q
local-reputation
7 Q- [# Q  Z2 R1 Pglobal-reputation
6 p( v; _. I2 f5 W6 Mcredibility
( s* C. N3 f4 X% ?;;
评价可信度,每次交易后都需要更新# S# J6 H) f8 V' ]
credibility-all
6 N8 F- z/ g- @7 q# C  K;;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
$ a8 Z7 l3 K% g/ X9 k. `  e- @: C$ B0 f& T$ A4 ^+ w
;;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0.50 M9 Z& e- @2 B: i
credibility-one
% W1 w! t1 `1 D;;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. y: t" V! _3 M- m: E, _8 _/ K
global-proportion8 X& Z' e7 j6 e3 M
customer5 d7 U! h, j- M# s1 g2 A5 c% `
customer-no" D* B6 S+ W1 c, n
trust-ok
) y1 G. ^& Y6 ~trade-record-one-len;;trade-record-one的长度, w4 D" x2 T! l8 g% A# i( ]. y
]
5 _  ~/ P" c9 k* l8 M
+ U, }# _6 g/ x  p# Q" N;;setup procedure
& m5 O$ k+ w6 n, o8 J" r, u, v- x6 o2 b% W+ c  j* S
to setup, t: S0 G  |/ J0 z( D
6 s- @  k7 m* ~& p5 v
ca

; y/ v1 F% [! P* [" |# I; x* a
' `1 E. z6 K# ^initialize-settings
6 m( k( v3 f% e
) G$ n8 M( M! E, S& Y' I
crt people [setup-turtles]
$ ]" y8 y8 ?2 ^: Y! e% e
. J9 J+ d2 z" Z0 l% t! y9 f: }4 W
reset-timer
; B3 q2 O2 o4 E7 `

9 q( Y8 C, K+ r3 mpoll-class
( f/ V4 i) c( `" f: G2 g
, l  K% u# F4 s+ B* l6 W
setup-plots
* _* F& l8 f. J5 H1 M& A, J% s
  Z6 M% l- n8 D8 d( S6 ]9 d
do-plots
$ H( L$ _  o# ^  {# h$ x: H6 S
end
1 o# O3 l3 x7 U1 ~' p; V/ k2 J, F- ^" D* Z3 z
to initialize-settings
+ x# d( w# h" Y! @8 I  R4 ^; t" H1 ^- x, s7 f$ k# t/ F
set global-reputation-list []

* d  J9 @7 o# x4 }7 b* S- |$ [0 k8 y/ E1 e; L3 G& E$ L& f6 u
set credibility-list n-values people [0.5]

5 N1 n2 x9 R8 h$ t5 M( U
& [" \% j9 Q& s3 K+ Xset honest-service 0

4 }( l5 t& C2 m, T' V9 j- i  D  ~2 b8 q/ S3 {9 @6 y
set unhonest-service 0

" i! ^# d' c) Q4 }7 c7 |- r4 ^3 O$ k7 a8 x! s
set oscillation 0

% B) Q% J6 K( o$ R& u4 B( ]
' Q  ?- i; D( X3 `set rand-dynamic 0

+ l8 f/ o2 q& n. i! Vend) v4 k$ Q$ D  t  k/ N, d

( y0 K  c( ?( z& T! bto setup-turtles
: ]% ?4 H" H" z) `' Zset shape "person"" U4 N& A+ c& H5 m  E5 H
setxy random-xcor random-ycor
& C; z- Y* k7 ?! C- V# K: Iset trade-record-one []
1 C4 u, s5 l) l0 m( B4 Y& {

# f2 k7 x! X2 ]! R1 i- Z3 G2 ^set trade-record-all n-values people [(list (? + 1) 0 0)] 5 W5 b$ |8 T" C0 u2 S

3 P5 e8 K2 f  D7 v9 Oset trade-record-current []
5 a' z+ H8 P6 {+ s. J" E! iset credibility-receive []
; C- F; O" t7 f3 t2 Q6 L! J* @set local-reputation 0.5
2 q$ S# ^5 K2 e; Wset neighbor-total 0
% V" A. a- _. r9 F% R2 C, ]9 g* bset trade-times-total 0
- D5 S  I. B/ \9 N( P% C  rset trade-money-total 02 m, O8 z) f1 W7 k
set customer nobody
7 O9 ?' ^3 ~7 q$ Lset credibility-all n-values people [creat-credibility]/ t$ I, h) M, D6 s9 O% H1 }2 |6 H- u
set credibility n-values people [-1]
7 g7 X- b9 F' c1 ^" @get-color  J! O7 q/ c4 u( ?
" c5 W0 n& e* I% I$ v- O8 B
end9 {' u2 z! k; }" V2 v
: A$ U% a' \9 v  g$ |
to-report creat-credibility
3 P2 q9 m) N7 w% N. e: p4 sreport n-values people [0.5]
) W' P& G1 R0 z4 lend
7 u7 G& Z3 T% k: F0 k  J8 C0 ~5 P  \( t2 g8 u: o& Y1 c/ W
to setup-plots  w) ^' O0 ^3 ?( r' k( R
% g5 a) m1 \+ N+ ^
set xmax 30

( _' h4 t. {/ w6 @/ E& c. u
* p1 N* z7 p' E& k7 u0 `5 }) fset ymax 1.0
# G1 l+ q' @/ U, g  }3 p" \

/ J7 u, g8 e4 A2 eclear-all-plots
# r8 U  ^" B2 u1 o7 {& ^2 U
' p; k/ m8 A5 ]5 p* J: `
setup-plot1

$ K- O1 M& g) g( F. Z. h3 ]' C- f; S
setup-plot2
$ e3 {: U' |4 J

) R: J- [# ]& J+ isetup-plot3

4 j" t% T# x. J( Y  R: i7 ^end3 l+ V6 q1 n0 G5 U1 u
9 [6 `4 Z1 Y) U, ?2 ~$ J
;;run time procedures
% h3 \$ m- R4 c/ d4 X' q. y0 |/ A4 v# Y  b; l
to go
& |4 p  l) K2 V; A  F* Y
/ F5 V1 `/ J9 `/ i1 qask turtles [do-business]
) s' E9 {! u+ s! T& x6 s" `  B
end
" r* {( ]! P5 c; o. o3 k6 A3 p+ |
to do-business
- J$ E1 a& a# Z

: _- a, K4 b. v' w9 z; x8 b: i0 A6 L; G0 ]
rt random 360
. i0 {! p; i+ O2 b- c+ W
& M, d+ M" N7 O* L
fd 1

9 z0 r/ z" @7 A. c. P) V" K' W6 T" I. k0 W
ifelse(other turtles-here != nobody)[

" \9 x: a) R$ V0 O5 t3 L
6 F0 N- c  B- `; u! Hset customer one-of other turtles-here

# ?) j3 B$ {; A% R+ b" h) E# X: L
;; set [customer] of customer myself
. Q8 l3 j: n3 i, g6 ^5 t

" A: C; S8 h, `9 s" ~. I# [set [trade-record-one] of self item (([who] of customer) - 1)
8 H, k6 w0 f/ l' Y: a  @[trade-record-all]of self
* ?( ]% Y) F0 I9 {4 k;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

  X7 Z7 e, u! T! D7 s* @  g
% K4 p$ y0 W5 F3 ^9 X" @3 h" Qset [trade-record-one] of customer item (([who] of self) - 1)
7 V0 _7 \2 H, @. N4 ?[trade-record-all]of customer
# W/ E7 X: m: i+ t

6 X( h# y# s; U8 v9 Z0 k9 `- sset [trade-record-one-len] of self length [trade-record-one] of self

5 S# n% A+ p8 z* H6 _  V, m3 O  E- G
set trade-record-current( list (timer) (random money-upper-limit))
$ o5 F4 a8 R7 m) ]% H

; W% M* ]5 K/ b3 e; ~2 gask self [do-trust]3 O6 I& {2 D' h3 O; u
;;
先求ij的信任度1 P, ?8 V0 X1 i* I- C; Q
' Z8 f* o6 ]1 n1 G
if ([trust-ok] of self)
; b# L0 M( R/ F3 z! z;;
根据ij的信任度来决定是否与j进行交易[
8 @' j: b* y; \' task customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 Z: a, P* T- [  q4 x$ Y3 Q
+ w. O# T9 a: N
[
- \8 I# D( Q: M4 m8 k+ F

7 Y/ Z" W0 [" v" u; Ido-trade

1 B  t5 h; `+ t3 y% l& ~
0 X" |& }4 P& [7 _update-credibility-ijl

1 a" d! D, D3 ^) r' E6 Z7 k! J' L. z
8 H. y' k1 Y' G  Yupdate-credibility-list
, |% L7 u3 ]% }6 X8 u2 _

  j) A: Y) j2 Y5 p; A% O
4 f) o) `) x/ f! U) Cupdate-global-reputation-list
9 P* X! @( F  g9 U3 S3 j" x1 K

7 e) F# V& M% ~poll-class

5 Q% a7 @0 H2 C, U0 Y" J" c7 R" Q/ {9 S3 V$ c6 F1 g
get-color
7 c: A- U- a- \2 R5 @' l
# y) _+ S2 ^* o+ r
]]1 W8 ?5 ]3 f- H/ A  l( N& V
  m3 H5 I+ M3 ~$ d, U# R( E+ a
;;
如果所得的信任度满足条件,则进行交易+ k/ n, [* g* Z, R& W4 n4 o2 {$ ^
6 f8 |4 r" F) s; j3 _; a
[

, N" H/ E5 A7 v+ w( ?% W0 e. ?4 ]/ v8 C
rt random 360
5 d2 t) K( j8 A
( Q0 o" Q4 F% }# v% O
fd 1

2 D% L. [' U/ h2 _% b" k
$ \4 _* s4 `1 U/ s$ d% B]

: _! _$ ^6 ^- I; t+ n. _/ x5 u% N1 ]7 K! l
; D) `+ e# N7 ]0 W" `* u$ S" d  H5 Wend

( u) S9 u- V$ l- `3 y( L1 d. Y0 o' y2 B" d& y
to do-trust
1 T5 e8 j. J3 y; \+ G5 |set trust-ok False
# V3 s$ s6 G! }6 ]6 A, M# T& }$ \: K0 y5 h. k! R; F- b
. S1 d) L6 [8 F' N
let max-trade-times 0
5 x: P4 e3 ]9 Y/ Q( Y# c4 S( O; lforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% N) d7 D" b2 u" g8 u. {
let max-trade-money 0- s5 t9 q; z% m7 N, v
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 `4 O4 r) t& I, H& J  w
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))/ h# d7 w% w/ J& L' y; k
5 q3 m+ Z, a  t/ B, p  \7 R

: B3 H7 ^: f$ s  Dget-global-proportion
* t& g' j1 W- J: z" p! Plet trust-value
" |0 l6 S  w* B0 Y, glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

) d- n, N) G  v, m4 K! U- q$ wif(trust-value > trade-trust-value)
1 _+ @- Q) X+ {6 n/ }9 ~, ^( j' Y* z[set trust-ok true]  t4 V4 @1 L5 _# Z# g7 }/ |; c
end: r8 {( s& b' U  A  e0 o/ O$ X1 u
" T& B8 ^7 W$ z; K' Q
to get-global-proportion
" Y8 @" o; u4 `2 w# P8 Rifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 M; C! u: K9 W, h
[set global-proportion 0]
. z! U) X. U" b[let i 0$ v0 Y9 I# [. d$ g0 T0 R& e9 C; r
let sum-money 09 ?, K6 Z& `. x
while[ i < people]9 \' ~# W. a- n1 V
[
- L& o; g, n1 t7 }if( length (item i- \8 R6 F7 k: u# f. A
[trade-record-all] of customer) > 3 )

% U  H4 W+ b7 B9 }[+ J5 e/ @0 i, j, f+ M$ {+ M$ y
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 N. ]4 ], j+ x4 Z: V( H]  i! U! U# q/ w6 M3 y( m
]
0 y  P8 g7 S# I4 I! C3 Rlet j 05 i8 q# K9 s6 L2 v+ K7 c
let note 0
/ m" Z! I# M* \6 Z+ Lwhile[ j < people]
* r; |' r: `/ J[
0 j4 V6 C1 [7 u% |1 l  Eif( length (item i  X7 I& \4 K5 j; e3 r
[trade-record-all] of customer) > 3 )

: S" t9 r! \7 p$ {# i[
" }6 y5 O  |1 ~ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
6 t7 S% E' B" Q: E+ v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]! H5 C$ H$ f, J9 s8 k
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* a. S6 z9 K; G2 G. n; X
]
' s9 Y0 {6 h6 R( Z, F% z: z]
  Q4 Q. U5 {7 v0 d* C/ x/ Mset global-proportion note1 J; o$ X* T/ {; F
], h) j  H; f" b" k" z
end, _9 B  i& v# P
: A# Y% Y0 J7 S9 D
to do-trade. g9 f& i( l# T( E
;;
这个过程实际上是给双方作出评价的过程
- ^! H5 y2 X, tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价  a* k( q+ b" G, G* a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% H9 Z" s" ]9 ?/ c
set trade-record-current lput(timer) trade-record-current% V! {, X: w* y2 a
;;
评价时间8 T9 N3 @* j  Z! z
ask myself [0 q/ h$ b7 h' q; i; t  a
update-local-reputation$ A0 J5 e! x8 s; W& B) a$ S% {
set trade-record-current lput([local-reputation] of myself) trade-record-current
1 `# n3 |; k3 K' ]]
+ W# B. B* u2 W1 Kset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, i  g2 R  \+ O5 b;;
将此次交易的记录加入到trade-record-one
: q4 F' X8 Q4 ~0 `* Cset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)8 }# M* Q/ F  Q: y+ v2 F
let note (item 2 trade-record-current ): l. E) |% v! `" T' i2 p! ^
set trade-record-current
3 @+ ^* H0 o5 X4 o) G" @( O(replace-item 2 trade-record-current (item 3 trade-record-current))

% ^9 H. I0 t/ Q$ |3 Pset trade-record-current
# |3 X8 _4 \+ @* b(replace-item 3 trade-record-current note)  M, W3 g& S5 h8 k

. C' s2 _) J, t  a

; j+ Q2 }; Q3 E8 {3 N- H; Yask customer [0 Z1 F3 D6 u; Q6 I; `, Z
update-local-reputation
4 _; ]/ G: b, mset trade-record-current; f( f# N- v& u" X1 A
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ [. H* ]$ L8 h- Z0 K' L" M]/ l3 {2 N% }" I0 L/ E) V9 \1 x+ @8 Y
$ V7 @- t. ]! B/ F! X  K

5 s" N  C" b" l" w  zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer$ o7 O6 `5 S3 p& j$ S  |6 H
; e; D+ f. X- @+ I
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 n; c% R3 s: z. |& V! n
;;
将此次交易的记录加入到customertrade-record-all# @7 U0 q" k/ ~/ J
end
4 Y+ r" l3 K  W4 d- t! c
' k- {( q- x7 vto update-local-reputation
! V! k, c7 i2 M. Z) G/ Zset [trade-record-one-len] of myself length [trade-record-one] of myself
6 |8 Z7 w) j, K' G6 S1 H
$ T- G/ d7 g9 W3 N4 r( N2 _3 q& c6 A/ K5 Z; p/ Q) E
;;if [trade-record-one-len] of myself > 3

) c' r- R) X8 j% A$ p& `1 P( Uupdate-neighbor-total
. _) i7 \8 W) c! F, o& ~- s. J) d;;
更新邻居节点的数目,在此进行
) b$ J/ X4 h6 H. s! Ylet i 31 ~6 C# z& K3 |# M2 N; m! n: G( z! q
let sum-time 0
! y0 I0 g$ y3 e4 t8 d" \: Y# ^while[i < [trade-record-one-len] of myself]
* d- E( B- _  D( Q( m[1 O1 o$ E; p: K1 l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
! w. N  H" r" ?" b! e4 T8 tset i
, o8 Y' Z1 i3 D+ ?( i + 1)
2 j* b4 N5 \9 ?9 z7 _: p
]6 t# V. q3 Q8 k8 Q6 l' Y+ f
let j 34 L. D7 S! k0 _7 ]+ V
let sum-money 0
* q! L; L' n% [, P1 ~$ i3 Gwhile[j < [trade-record-one-len] of myself]
& s( r/ m$ U# w[
# r: w* n: h; S: Hset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
! P+ }% l: t' q5 t" @# R  Cset j
- S) _! W$ W  R9 x+ K) b2 U5 L( j + 1)

" J; s* r: D+ E" P  ^+ a0 e]
3 @8 K* l0 |$ K) d8 Y4 Tlet k 3' m$ d& p/ @  ~0 `
let power 0
  g/ ~5 I3 q; ylet local 0, k; |) w/ q, F  y% }5 {2 b
while [k <[trade-record-one-len] of myself]( E5 t- Q! ^" n) z
[- t) L1 Q  V' \$ C7 N$ V
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)
2 R) h, q: F( V+ j- ]9 Nset k (k + 1)
+ g1 @+ y  _& z: g# x" O]' F* m: X0 D6 R
set [local-reputation] of myself (local)
3 _& N0 v+ o6 Q7 g# ~8 Nend2 C0 g8 ^7 U- l) e/ P

& U9 l% l5 }9 d0 {- o9 Xto update-neighbor-total+ a$ [7 Y. l, g" B0 G# j- d

5 t( j: m' O' b5 A, eif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& T7 u8 ^; v# z) [! o; K9 k$ r7 \' @" ], ^3 A2 o. u7 z

) g% D) ^8 t% @end; _) y8 J2 G2 s5 y- j/ q2 g6 @7 \
1 R2 c: {3 E" Z2 H: r3 B
to update-credibility-ijl + ^" Y# Y9 k5 C! G, S7 r
, y/ S# {- d1 Z6 w: E3 |
;;
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。
7 b/ c) v2 l& I- c/ \! Clet l 0
9 R# Z7 c6 x+ m; o7 ~! I: }% Ywhile[ l < people ]( ^0 I0 v! y$ j+ a; b. G
;;
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( j* X( z0 l9 I6 v( P9 t
[
9 v$ E6 @) ~/ M. [! Jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)* Y' K6 a0 @: J. a' s3 m" }6 A$ V* R8 p
if (trade-record-one-j-l-len > 3)
$ `. P+ p6 t  h* L" c[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
: @0 p; `# X) e4 g  v! slet i 30 C! F, h. B# Z8 @& u8 {& ?
let sum-time 07 \0 x7 [! b+ L: I. ~
while[i < trade-record-one-len]1 A: u  ]) B/ B
[
( r3 X9 b2 Q" B) S' s+ gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
  _5 U" S% V7 N* Y2 iset i" A' E7 r% E$ P
( i + 1)

/ z8 [+ n, y/ |+ q3 B: C]
4 d0 t' v  U# P9 j' l6 f4 |let credibility-i-j-l 0
: w6 h  v1 W( x- V1 a;;i
评价(jjl的评价)
5 P/ [: U# r, K3 @( ~$ L! j; Vlet j 3
0 a( T$ z9 C* Z. g2 d& R2 }let k 4/ G2 o$ \6 i$ y+ d
while[j < trade-record-one-len]
9 O! e2 Q/ {7 Y) z5 G0 W  P[7 h3 q3 @" q& n8 k; F/ R& @/ |
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
3 a2 ^! u3 {# |, A. Dset 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)/ e3 G1 M0 c2 y3 _# q% e
set j
. `' C2 t  R4 V* ~- g* g9 S% C( j + 1)
/ z  B; B& g6 D: o. g
]4 {1 b' f# F  P) x4 Z! W
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 ))( m" i/ H! X9 p6 m

; m8 S1 o4 x6 M1 Z9 u

/ r6 W; i' {9 \7 i/ w0 [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# i' }0 d# d2 j  s" Y;;
及时更新il的评价质量的评价
5 e: Q* v# w; E) {set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  M6 q3 C: T+ Q7 Tset l (l + 1); `' l3 p' _( Z( G1 @
]
' d. o+ S' b8 c5 Nend# B% d" ?" k. P" u' L1 V* b/ K$ R( |
( v- u7 |$ `% X" [/ }% b% e
to update-credibility-list
9 l3 D# P6 O" e/ }2 Zlet i 0
0 i5 }  I) {8 Y3 ~* ]$ mwhile[i < people]
& k0 ]! Z2 F2 P[+ }: M; V- k- t; {
let j 0
% |4 T5 Q6 J0 P: @- f- ]: O! b# ]let note 04 ?0 _+ `! k5 n" b7 o( f0 _
let k 0
9 P. D) i! r+ B; ?, n% A;;
计作出过评价的邻居节点的数目* c- p' Q- `- y! L) Z0 ?
while[j < people]+ ?% \/ H+ D$ e
[
8 ^  k% S) A. o6 A9 H" d8 F/ [* mif (item j( [credibility] of turtle (i + 1)) != -1)2 M1 a; l3 S* h
;;
判断是否给本turtle的评价质量做出过评价的节点
0 f' O: u3 N; C. w" Y1 G[set note (note + item j ([credibility]of turtle (i + 1)))
; K- q1 p9 q2 K0 T6 ?% p! m;;*(exp (-(people - 2)))/(people - 2))]
- v4 |- m7 V1 k# x; U# t
set k (k + 1)1 h+ ?1 @/ F7 L
]
; Q) `* d% P3 D0 z% Uset j (j + 1)2 i2 P: A  j5 g
]
, M; Q% K/ g' }& Z" Z5 qset note (note *(exp (- (1 / k)))/ k)
+ I& a+ b4 y5 ]% yset credibility-list (replace-item i credibility-list note)
" h! B$ ]" f) x, t6 w6 L+ Q' ?set i (i + 1)" @0 G+ D% i3 }. U5 D3 o
]) `8 t7 j5 n/ Q
end! w! L& S$ a. c8 d7 b. P

' Y' B; n) O' e. I& v* V/ U% Oto update-global-reputation-list% F+ h. Q5 P  W( K) H5 F$ G
let j 0- J9 ~& X4 H4 c" Y
while[j < people]
, T  @* t* Z) i[
) _! d4 C7 w* J+ ~  f* N' y/ llet new 01 C& x1 A$ C; u7 F( c6 C5 T5 x* x
;;
暂存新的一个全局声誉
  U$ O0 o4 N! h4 v: J' tlet i 0
/ y& e* p1 o/ Q8 R4 blet sum-money 0
, \  C% ]+ J4 llet credibility-money 0
! @8 ~3 H& [( D3 ^while [i < people]
& V7 W6 l) o2 {" t: S7 @- |6 Y[$ z1 ?* L! G/ r
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 m* y3 _3 o4 T8 j9 u
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 f2 X. E% ^1 K9 q
set i (i + 1)
! }4 H1 `! `8 o; D+ }5 {]
3 o* L) [6 }2 w/ T: M2 p/ xlet k 0: }4 \1 _: }" Y, ]2 g
let new1 0
7 v5 `" Q# @& K6 |! y# \' xwhile [k < people]9 h! A: }, W' q. H. }9 J8 J# s3 B
[: S9 \: j, x' E9 o  u2 F4 U
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)2 t: R6 r) i: E: ]% _, E
set k (k + 1)
2 _, O( P6 ^9 W* u9 L/ P) ~]
6 P6 k+ n) \8 e8 ~! `! f) W* qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 m- `# `( k: d  _. L4 d! o
set global-reputation-list (replace-item j global-reputation-list new)- `/ }' c" W$ `+ s3 M
set j (j + 1)6 b7 f  M/ A/ W8 o+ P8 D
]. w' r; h% I7 V9 G( ]- M% |6 F
end! i  N8 f) t) Y% N! `
/ m' t( X: a" i1 d/ v7 V3 y4 j, X

3 t' P4 u3 G6 }
! U/ E: \6 l& \( F: \# s5 B  K; Lto get-color
' v; @) V5 _7 Q9 S6 O
/ E1 k8 G- a% c+ L3 P6 Rset color blue
' a. h% A/ _. X; |- D3 P
end4 e$ W$ O( i3 v: t; R9 {: c
( a" q$ h0 F$ l6 |1 ^" V
to poll-class8 M4 F3 v, P* c3 ]3 l% _3 F7 K6 X
end# i3 r3 m1 h0 I9 W
6 r% R' J# \( `, F7 r& v4 x% h
to setup-plot1- P* ]1 ]1 Q$ y
! {+ U: B9 p4 }7 c! @6 b
set-current-plot "Trends-of-Local-reputation"
  X3 h& b/ l) h" e4 U
3 Q6 s* M; D  b: n# V/ _! m
set-plot-x-range 0 xmax
$ x: h) d: ]# a. m
( ~  p  H$ A0 _7 X) Z+ K& r
set-plot-y-range 0.0 ymax

8 A: @7 ~3 W3 Q5 Mend
" q4 N" [" `" o/ D$ D) j5 y1 \
to setup-plot2- z# [; ^5 s; V' ?" _
" t: E. F& H5 F# \
set-current-plot "Trends-of-global-reputation"
5 R$ p3 f* B: y1 p
7 w. a7 T, i. e5 t- c, ~! U' g
set-plot-x-range 0 xmax
. u% @2 P7 M, y% b! Y

$ O2 g# a, N) L% eset-plot-y-range 0.0 ymax
: h" u% x. {2 C  [: r7 c5 ]. l
end5 ^& D9 M) F2 N4 l+ m: c+ f, c
3 U. J% v$ P! a7 B
to setup-plot30 _! W* p9 F! I. |4 j- R

2 c7 r& V3 r5 {- Gset-current-plot "Trends-of-credibility"
, C) _- Q+ v! T3 d

. z+ m# |% W& m" bset-plot-x-range 0 xmax
* S4 m3 Y2 \! u9 x: O, [9 j
' k% H8 |* v; y& \8 t* s# b
set-plot-y-range 0.0 ymax

, y0 f3 I1 F; y, u8 k* n1 nend
) E& N$ B2 {+ S! w
( G) C6 J  c5 |( P6 a$ Qto do-plots
- V6 Y) s4 b% B% y% U* @- @( M/ xset-current-plot "Trends-of-Local-reputation"- b( C! a! Q) x  O, F9 {
set-current-plot-pen "Honest service": V* S0 N  Q$ ?$ q4 y. y
end
2 Y) C( [3 w  ~# _) s
0 ~! @6 [( d# O" `- I* l  x' l[ 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.
  n5 s! r" t: x6 z0 Q; B( j3 `# h# \* |5 ]8 G6 N, A2 x' \
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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