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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:
: G7 j( O7 G$ @% H% bto do-business ' y# y  J, [$ |" A- r% H( V
rt random 360: ?4 D/ L9 |+ [$ n; v2 q
fd 1
- E/ A$ S4 r: z9 k0 _$ v' Y: a" N ifelse(other turtles-here != nobody)[
- M! O5 |7 S9 s" t+ X   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.! E5 w0 B1 z; e# G& M$ X
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; @% _7 D; s5 z) r
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer- a. S6 R+ e) R0 W4 q4 r/ T
   set [trade-record-one-len] of self length [trade-record-one] of self
; W9 M( }1 o0 W/ g* [, {' I3 i+ M   set trade-record-current( list (timer) (random money-upper-limit))& l7 q- @8 }  _* I0 k- C" c

; A7 p: `2 ^  f/ U! O3 m问题的提示如下:8 ^0 \6 a7 F( V& Z7 j: ^' o9 X; E3 T' f

* W" X1 e2 A  I. r  lerror while turtle 50 running OF in procedure DO-BUSINESS7 m3 z, v5 U+ o4 f3 u6 X
  called by procedure GO& w. N  Z' V7 Q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 ]  v- N8 k- i  V1 `, {" s3 J
(halted running of go)
: u$ M! l; R9 N" B+ I' i
) n! y% t  t. o$ k* 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~~3 h% B: W2 Z8 O$ h
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# s5 H+ V; Hglobals[! ~+ t' U- O) L) C
xmax3 A5 `" d8 A3 R- V$ ?% p" h
ymax
) Y# ?2 {* ^, R4 i; Cglobal-reputation-list
7 V. `7 Q1 y; T' \; f2 {
/ j, ~  N5 d+ ]1 _5 a  a;;
每一个turtle的全局声誉都存在此LIST; y& O, h2 X& Y. R, l3 i5 s  J% H
credibility-list3 q* z- M+ T3 I. h/ _2 x
;;
每一个turtle的评价可信度
  M3 P$ h5 S+ D  ehonest-service( o8 o8 X1 _) w5 s5 X
unhonest-service
2 j2 K- L7 x6 ~oscillation
8 @0 v2 w  m+ ~$ d6 Grand-dynamic4 Q/ `: T$ g* P2 J5 Q5 i5 Z
]
5 b4 e" g/ E( x! I- b5 \0 W" D8 `2 _
turtles-own[
4 Q& @( F4 {& R- Q3 gtrade-record-all
: O6 m5 |# N9 s2 I9 M3 }9 ];;a list of lists,
trade-record-one组成# p. s: _" h2 @9 i
trade-record-one
( L% g% Z5 e! s! 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8 l! s) E1 T( ]; E

! C+ ]; J$ G  L5 M1 v;;[
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]]9 F$ n1 |) i! G* ^
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]
# e1 A+ {7 ]- @; e/ x( m! I! Z, q  kcredibility-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
* `& e# |+ u! jneighbor-total- l6 [8 Q. u" j! ?. Y
;;
记录该turtle的邻居节点的数目0 t4 v& P6 m' {" b: b$ s
trade-time
( |# e/ Z  o, K3 H1 ~6 D$ e;;
当前发生交易的turtle的交易时间
. s  y8 {  n+ Q6 s3 M/ E7 k& aappraise-give1 l+ h" r" ~; r3 H" R
;;
当前发生交易时给出的评价3 z6 G' S3 Z3 |% Y5 j
appraise-receive
2 ^2 l; i0 W: Q, w;;
当前发生交易时收到的评价
, U* t+ h" n0 V" Y/ aappraise-time
, X4 _& [# ?+ }7 t6 p;;
当前发生交易时的评价时间1 ~1 J- w6 y( k! [+ k. g' V
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' N& d& K0 O2 q8 g5 B; E
trade-times-total
" E" a  V' w  o; N;;
与当前turtle的交易总次数% l1 U% M# i; d$ }& I: s4 K  Y% O
trade-money-total7 j7 i- h, l! e0 B3 w/ H
;;
与当前turtle的交易总金额/ ~7 j7 t* E; y; M% z1 I
local-reputation
4 h) n0 G' L# ?3 x- ?global-reputation8 f  d" N4 x, x# E) I# r
credibility: C, V. n2 Q# B
;;
评价可信度,每次交易后都需要更新
2 Q" e2 J3 y2 t% w. x" C2 dcredibility-all! e2 A) s' v2 R% k6 L! S
;;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
5 [, V0 M- w( R# x- o, |5 Q8 U
: H8 G- }0 M; l3 O, t' E9 q( q;;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
& X9 l+ Y  z7 t* K: f- ^5 Ncredibility-one
% L# B, R0 B% s$ H" N* h2 A" m5 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& z1 u) S3 G4 N- }
global-proportion
; _. R* u% Z8 p/ b3 xcustomer
2 F$ B. X$ Q0 I8 X% ^$ k) Mcustomer-no
1 J: a4 K1 z1 M3 ]4 @trust-ok
( x+ f% I) T  n* V% z6 _trade-record-one-len;;trade-record-one的长度' P6 r/ s2 ]$ q
]
# m$ {9 x- M- ?: u! [1 n6 D
' C. W3 m- Q" ?7 l! X" _;;setup procedure+ G7 r8 w% u* ^. r( H- A8 {/ O
0 \! }8 Y% m# v2 f: g1 U$ [" h
to setup
5 Q0 c7 U9 x) ~' z+ w
% \) ?: {7 D: \7 G& Rca

; E* T4 m0 P3 {0 N4 g5 @
7 i- y* g+ \: h" [initialize-settings
$ Q7 M7 h0 D$ i6 |" R( \

/ e7 [/ i5 V; S* r/ k8 K& mcrt people [setup-turtles]
* g8 F, E$ x2 \; Y) A+ J

$ F4 o8 m1 l: j0 L4 ~reset-timer
1 ~/ s5 a* h% v
  ^3 d3 L8 c) F* p! n# Y
poll-class
: t( h2 A2 X" W: H

3 F. l' `$ t4 J& q& o& fsetup-plots
: Q$ \7 H5 H- o9 g1 p& o
# b! F6 N- V) e
do-plots
, a  Q0 b. x9 F8 Q1 [; P6 {, R, j
end8 ?  A6 Z: w4 B/ K0 T  e; o
: R/ b5 f6 Q7 Q" w2 G& J6 q( H
to initialize-settings
; V# u3 u' b( j1 Y. G6 o' p3 `9 F6 J1 Y
set global-reputation-list []

  V; s8 A# t- p& N# x
3 E% {  k+ K9 w; @! {6 N0 h& v4 `set credibility-list n-values people [0.5]

' g& A. u  R4 d' C6 ]$ ]6 Q! [, ^8 x# ?$ x, `$ G
set honest-service 0
5 F# ^7 N' H; s( ]5 _

3 J8 i5 Y9 U" I3 R8 u( Jset unhonest-service 0

$ J  w- {) }/ P/ [$ g# f2 C0 g- Q2 d+ X, \! d( Q
set oscillation 0

$ i$ A+ y: Q$ f; H4 _% A" t# u. v# f7 {2 y* Q( d
set rand-dynamic 0
7 r' B! m# N& b+ l2 c4 Z3 T0 b
end
: W! U. f9 o- ~6 \' h, X* E7 B/ g) d$ r
to setup-turtles ' B/ D( @8 {0 {% V
set shape "person"+ u! V1 b# p' ?+ D$ _' w4 B
setxy random-xcor random-ycor
4 I! h' \; i) U: u9 H! f, X: Zset trade-record-one []" v3 Z' j% M- |" n
+ l# X4 U3 ?& ~* \
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ J. k% C  J* b: w8 C* A
; B6 d5 K; D3 P5 u0 C
set trade-record-current []/ |6 u: R* M# j0 {: K
set credibility-receive []5 a# _4 j% S0 Z
set local-reputation 0.5* |5 |- u1 l5 P5 V* i% ]# K
set neighbor-total 0
* @! ?. X9 H) A* ~0 K/ r) _set trade-times-total 0
, c9 q( l: Q# O6 p5 ^  C7 hset trade-money-total 0. u) x3 {' o$ q
set customer nobody. X1 O) o; G, i% E# V
set credibility-all n-values people [creat-credibility]' C9 X# g! P8 j& t( u" N7 i
set credibility n-values people [-1]9 }; V+ v$ f  h4 ~# A
get-color) L4 ]' W6 G& `+ z) e  ^

0 Y9 M5 N, {( \1 J) @# Y# yend
" n$ C# s5 _& r, _: T& ]
+ f8 W: k5 E) b, o2 i" d8 f+ ?to-report creat-credibility3 Y3 e: `+ y$ b. q, }# g
report n-values people [0.5]
4 T( ?9 |- O( M0 P$ Yend3 E# Y9 _# [0 j" w% Z* P
. J. B) i5 T, b% E5 g( M
to setup-plots
( N4 g4 W7 J+ d  S- l
( b8 U/ F% [  a- N9 [set xmax 30

6 v: V0 {( s' x$ ^
) ?1 k4 I, ]; F6 oset ymax 1.0

/ R; \6 F" _* \2 M* U
) G# e7 _+ t. M2 Tclear-all-plots
/ M; S; c7 F0 S7 w( K
7 q+ _2 M! W, ?9 s  ?4 [) X; G
setup-plot1

6 k' h3 `& s" h2 d% m
2 ?2 l0 U3 y, @' t! ^; [2 Jsetup-plot2
0 U, {# g: M: M9 u" z8 l" h0 v
1 L7 b# h! y) @8 ?
setup-plot3
$ t8 u: K5 b& e% y
end" e1 g/ w: V, D' R8 U4 o

8 ?# s1 O% m6 o1 H/ Q;;run time procedures7 M$ b2 x  C; c6 S& a: q

; B8 N5 k) o, g7 P0 N7 n+ ~to go
0 E3 A' {: E/ }3 Y4 i  c3 V0 V/ L  J' W  {' w8 s
ask turtles [do-business]

6 D" `( k' H8 o3 J/ tend
# m2 W+ `0 f7 q, ^9 j* A7 u  b* u# s
to do-business
4 X4 Y  k" n- E8 A$ E5 H

* s, Y" ~) a& H: f7 @! v
. @8 {' @9 H# L8 I/ K# I& d5 {9 trt random 360
4 ]3 b/ b% P& |' i: K
: D* d/ y- l9 P+ G
fd 1
. i4 k# r' P# m" [0 u: s

) E' f3 f7 l# f. {ifelse(other turtles-here != nobody)[

" X( G- i# I* ?% R1 M2 v" C! U* ~9 M" ~6 Q/ _- B4 u6 p6 G1 r2 j
set customer one-of other turtles-here
: y, M9 f" ^$ Q4 j! H
3 S, X5 @5 T3 A; @0 ?
;; set [customer] of customer myself

+ |, j9 q4 d6 i# _. V6 o% T2 Q* D( d8 @. Y8 X
set [trade-record-one] of self item (([who] of customer) - 1)0 X. `+ }- [$ S, n1 A! x8 i" ?
[trade-record-all]of self7 O/ M+ a1 Z% O0 y, z: a# U& c
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* [5 a" ]+ W3 @2 |  L+ S* I  ?& o
* C. n0 }' }* ]' @3 Iset [trade-record-one] of customer item (([who] of self) - 1)
0 b  A3 v+ M8 w( A1 W. j[trade-record-all]of customer
  g6 X  N0 z  P7 L2 S  ]4 x+ o

* a) @* t" b5 z4 H( ]& [3 E9 P. uset [trade-record-one-len] of self length [trade-record-one] of self
1 S3 I& H3 A: ^& d

- Z: t  c2 h/ f; }, y' ], Pset trade-record-current( list (timer) (random money-upper-limit))

) X( F+ f) u' P* O& Z( U( p
' E  ^2 ~+ K+ Aask self [do-trust]3 x+ @9 b9 q9 x
;;
先求ij的信任度
$ b) g1 @$ r: E+ R
) ^0 ?% \4 C/ Z  I0 j, sif ([trust-ok] of self)4 T7 r4 v/ C- f; Y( s) T: M; ^
;;
根据ij的信任度来决定是否与j进行交易[
( S" c* D: z% J: p, J. \* k* Aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ [" q) m- K9 ~, w2 _; U7 L; ?2 N  ]
2 [0 E* j  _  V" p. u[

. w9 C1 {' T9 w" D, |5 n
: A2 ]9 s9 Z" m# N" e+ G2 wdo-trade
0 x- ~, ]1 f) t0 B8 i8 h

& g1 f* w( @0 T3 Q4 j. Aupdate-credibility-ijl
9 ~( V+ U( ?1 z- ]: F' l

# w9 a% V+ u1 Y5 Z8 p/ Z0 H1 V1 Tupdate-credibility-list* l/ J+ k# b# ]
# f: G4 A! ?3 f: d8 Q( }3 Y2 ]
* x; ?" |% @3 [! l" F7 N
update-global-reputation-list
, ]; Y  ?1 Y1 }

' Q9 w. r0 @: Gpoll-class
& [3 V9 a; n: T! ~
- j: e; p) n' U
get-color

4 R  d6 W3 U6 Y0 M6 L0 {
4 c6 o7 J( z9 x' K4 q]]# [, Y7 ~2 s# p- \- M1 z

/ r- x; j  c  ]1 b; c4 W;;
如果所得的信任度满足条件,则进行交易4 L. b+ y+ U$ k3 r/ k: |2 f

* y, y( i8 b- O5 E% O% ][
/ x" O6 w! Z. y. ^9 ]! H

- x3 S* W2 d! n6 A1 p- `% ?  _rt random 360
4 m" x6 {7 n+ r% ^1 J
+ A, J( \. P0 s$ C0 y- L' K) i$ R* t
fd 1

; k. `4 a' g5 N+ [+ G$ M1 d2 t* x2 f  S/ u6 y
]

0 h& n. I2 }% q& s. ]( l
, n* d; h) P6 s4 o  t8 B6 Q& C- p8 u& nend

& S# o0 l% x# b
8 ]% p5 i4 N4 Mto do-trust
" h$ I# C& g! T  N, fset trust-ok False' n: K  K. z$ [" n( a: ~# y' u

9 P7 M5 n5 q7 O2 S) W
( s& r2 u! T6 c
let max-trade-times 0
; f8 V. Z+ R4 ^3 G7 cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( G7 C8 @; x7 h( q% E/ l
let max-trade-money 0* l2 c- y% T  t; p
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
+ e* A3 I+ `% U7 h6 E+ ylet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
) z) `. R4 I2 T$ p
5 a* z! W/ g6 }0 h
% ?' ]) v1 s2 E: z5 X) I2 L
get-global-proportion
( E2 p2 b- k6 t1 ulet trust-value
  D  @: _2 `# `% c: Llocal-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 }: }+ j) p* b) C; I' ]if(trust-value > trade-trust-value). w7 G* i2 e! d) p' B5 l/ w; ]
[set trust-ok true]
, Q& P, X5 [+ {; Wend/ {  K; b4 t, Q7 K( {: j2 o% f

# c& H  l0 P6 M! h3 Sto get-global-proportion
4 _4 k1 ^8 ?3 z% J4 ]6 vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 H6 H2 i; [. S/ @* ^( ~& \- V[set global-proportion 0]
- D. ]( A6 F9 C( T; S7 y[let i 0
. I  }; l& ]& _6 l6 t; H' Klet sum-money 0: M& X2 H; K- T. F: Q1 @
while[ i < people]
/ M' W9 x1 u: b+ c: t[9 O5 d! ]8 {9 ?! q
if( length (item i
- ]6 b$ W2 [% x4 h8 l3 ^0 s+ M[trade-record-all] of customer) > 3 )
  E! f' M, \+ Y6 q4 q  {, e
[0 E# \7 c% G. E- ], O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- Q0 {5 ~; j* Q' G* F% ]]
" A% ~! F  C9 g]+ a! M1 \. ~' I4 T7 H
let j 0
! \- W: W' n3 ]. Qlet note 0
7 D8 X% q+ e  u# G; jwhile[ j < people]
1 ~$ {8 \/ x" ~# G' F; f[6 U, h, N4 t7 c
if( length (item i# [' z& V- r: A$ M, f) x8 w1 P
[trade-record-all] of customer) > 3 )
9 Q5 r# ]0 R* z' m7 y
[4 }3 H: R: p# Q* }% o8 O
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 l5 j4 P5 [, x  U7 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 ?, T1 k* P/ l6 \[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" O7 j: j" ~6 ?4 k2 w
]
! A# V; D5 J4 b- f& V3 O5 B* O]
/ h% g9 Z: {; eset global-proportion note
/ g$ ?5 a! e) Q]& f* ~0 o& w8 q/ A
end1 c& G3 I& Y; O4 W2 [! S

/ }+ i# G5 n+ e" v) fto do-trade
5 ^  T+ c& i% F' M+ u;;
这个过程实际上是给双方作出评价的过程
+ y6 e' O& H6 x  Z& i7 ~: ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 K9 @" q- ]1 f1 q
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
* n" ?+ W0 S- a7 q* Mset trade-record-current lput(timer) trade-record-current6 C; U3 _4 I  G6 ]1 h$ S
;;
评价时间$ L) q9 V# [0 `( W1 ^
ask myself [
. i5 y% v/ U+ `# j- dupdate-local-reputation0 q' L; F3 P7 d  ^& n* i8 A
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 y! k. w7 u) V$ |) I]
+ x5 I" Z' [- s4 _7 R) _8 Sset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 F4 c9 I. `* Y/ m5 K2 N
;;
将此次交易的记录加入到trade-record-one/ Z' V, B2 g0 P  b0 W% A
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( v4 b; _: A9 O! G. I& e
let note (item 2 trade-record-current )- e# W4 m% z6 @/ d
set trade-record-current
2 l9 S" E" ^7 f% T2 \- Y* Q2 D(replace-item 2 trade-record-current (item 3 trade-record-current))

" J) N3 \% z# R+ M& E3 {set trade-record-current
9 ]* A! k: G0 s! H(replace-item 3 trade-record-current note)' j" R0 ~5 J  X7 u

! q1 N& y. C/ q( y' u& A- y; w/ K
' X  J, B2 Q$ H( D* @0 ^6 ^
ask customer [
+ c: r, g) N% ]+ ~% kupdate-local-reputation5 A* L' r8 e) O9 z
set trade-record-current
7 X6 B- O9 x: d4 z, U(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
% E7 h7 l# ^! v4 o) y: l. L
]
8 q( L- |4 `! [. v9 C$ E- c; `) M
; K0 ]* \& O) \6 t$ m* x! B& e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* R7 t5 \3 a2 T
0 a3 h5 m9 z8 h" ^
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)), K; r7 ]; z, d  t( e5 ?
;;
将此次交易的记录加入到customertrade-record-all
* E; ^1 R7 M* }0 {end* k6 T! k# t; C  b

3 `- s: Z4 l( T2 z2 nto update-local-reputation+ Z: d# b# T5 j7 o$ Z8 \
set [trade-record-one-len] of myself length [trade-record-one] of myself
* _( }  {+ l+ R  W+ k
) Z3 C/ s# k7 t) B8 c* o4 X$ \1 L) p
5 S/ x- D7 z! G5 E+ o; g3 l;;if [trade-record-one-len] of myself > 3

, i6 n/ I' A% Zupdate-neighbor-total
2 J0 i8 @4 R: k* L8 h: H& f! m;;
更新邻居节点的数目,在此进行
% d- P6 ^& l/ Q  e: l4 [8 llet i 3; |4 @. g1 F7 Z7 z  Q9 r4 x
let sum-time 0
3 ~1 i# D8 X5 }/ ]& \2 Uwhile[i < [trade-record-one-len] of myself]
2 A3 _( ]7 e0 ^6 K0 u+ X[
3 I, h, T. S+ M5 zset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" B2 t4 v7 z3 O0 Xset i7 p# Q5 M- @4 l( v
( i + 1)
3 S+ ~& r- o' J+ y" @, n) o
]0 ~5 Q5 a2 X3 ?9 p* F* A
let j 3! \+ n: H- u. ?0 o2 g' \) B$ i' Y: J
let sum-money 0
6 q6 c* K) c' v+ Gwhile[j < [trade-record-one-len] of myself]0 J* T# R2 v- d! Q1 x8 Z7 S
[3 g' x# o: s: U& 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). I% C" a- e5 u( ~# }# r3 q, R# S+ p7 {7 E
set j
+ T; C8 E* p1 n$ }: g. ^( j + 1)

, n$ V4 ?& B- o/ \]
- ]& J# R' z) b3 O! O  Tlet k 3( T: V# J" O7 X4 E) Z( v) |
let power 0( N* _( b# P3 J& W
let local 0( V$ A5 P" E4 c5 T' }; n/ `
while [k <[trade-record-one-len] of myself]
; V& q! Y" {/ q+ q[+ I5 x: `  v* E
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)
+ o" R4 I6 O) z  W. N7 j0 hset k (k + 1)  C8 z/ [; A- J+ n0 q4 X9 J1 a3 L
]
% V* |* A% R2 D- s4 ~; C; i9 kset [local-reputation] of myself (local)/ i8 I6 R* H6 @
end
& X2 o6 b3 `4 Z, |* W7 C/ o7 k) e! s/ N, f: H9 r4 f- g4 }2 \
to update-neighbor-total" W3 O) P, S+ w; y- L/ D* f' K4 d! v% K( R

# [. }: O( }. E  Nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]) A  Q0 D5 O( k8 E" z; }

. `0 K( b1 {2 S9 ]+ u

4 ^+ K, D1 n9 y7 c) b- F0 \end
# a, I) F& z3 m
6 m; d" b& W. wto update-credibility-ijl
0 C" R: V" o* V5 U1 B) Y% ~9 a/ C" u8 A! Q* G' l& }8 G( B# y
;;
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 ^& D0 N+ U) `9 q6 H4 I
let l 0( _2 Q9 F0 l  ]6 ?
while[ l < people ]
6 K5 @3 x( ?' R; E( D;;
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( r# u% G5 R5 k  }4 ~" k, y% }
[
& w) [0 |/ f- i! U" ~! vlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: ^+ D( v8 {3 [* X: dif (trade-record-one-j-l-len > 3)
& X: u2 @" g# J2 B; ^8 c1 D[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: _, {% {$ Y: j5 C! B
let i 3
: ?, z( L& {1 ?let sum-time 0
1 m" h1 `, D' i3 u5 `) U" @while[i < trade-record-one-len]
, L3 v3 g! V2 [; [+ L[
3 D. p& ]# U6 f' F. i8 {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )  F- g& q- P) b+ h& \9 [
set i
  M: N! U9 G2 k9 b- }, o( i + 1)

- q! b  t% P/ ~+ c0 B" \0 k]8 r2 m9 {- t3 `) F0 v4 G
let credibility-i-j-l 0
8 V4 f4 L  }  F% p: A;;i
评价(jjl的评价)3 m2 L$ X$ m3 L9 t; v9 f
let j 37 m$ T( t4 P4 u0 _* Y8 t6 x" O
let k 4% F! F0 X1 o7 S3 {
while[j < trade-record-one-len]; P5 G9 l' \; g" w, d
[
) _- \% O) C" I! N6 n+ g" Lwhile [((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
; {7 Q$ ~; g8 p( sset 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)2 b' ~- J0 A  b1 ^6 q( p
set j7 ?7 B, j' m" S4 P; S
( j + 1)

6 u) T- t1 |4 y" n]
" J2 w, L/ ]0 j+ P$ H; S& M& ]% bset [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 ))
3 X3 e0 Z# l) q% S& |. E5 W
" ?( W! P) _' X
$ h  `& T0 X# e7 {6 K6 T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) H6 h- F/ N* q' r" M;;
及时更新il的评价质量的评价: I. \8 {* U* w" q* ]! p
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]3 E& _2 Z" C0 g1 o& D; _" {
set l (l + 1); |) ^# u) |) m, i6 |
]
* i/ H2 a. e9 W, g0 s1 {end
+ x, o2 B) w9 g# f% z
* a. n7 ^2 X7 `2 }  D% ]to update-credibility-list
3 @: J. ~" ?; t  zlet i 0
. `  X) T5 m1 q2 g7 \, ?' nwhile[i < people]4 `4 D, j. l9 G0 c2 H
[
- @$ A$ b* O2 C) v" n( M2 vlet j 08 h' r6 k: v0 n8 p% Y0 {7 j
let note 0! c- F0 G" p* S6 c" h% q7 L, D4 v2 a
let k 0: U( @0 Q/ |+ U/ l
;;
计作出过评价的邻居节点的数目# R  |% g9 h) H. @0 c
while[j < people]% T3 \* E. N+ y: f0 s: n
[
2 p4 C' t( }8 ~$ W( Q( L0 c% Uif (item j( [credibility] of turtle (i + 1)) != -1)
0 E6 y8 I7 m, ]# [1 H& |2 m2 v5 z; ];;
判断是否给本turtle的评价质量做出过评价的节点" R% R; _4 Y. T' u. U/ e' k9 I
[set note (note + item j ([credibility]of turtle (i + 1)))
: S- _( H8 h7 M' a1 [  B" L;;*(exp (-(people - 2)))/(people - 2))]
3 U8 W1 C# [" R; H
set k (k + 1)
$ U" d( t) e0 z3 n]
7 b4 f8 V7 a( M4 d7 U7 q5 F+ aset j (j + 1)+ I: i; t3 r/ `
]7 G5 w6 g8 p6 i+ g8 o& d
set note (note *(exp (- (1 / k)))/ k)
4 a. _& f2 t2 s9 s7 u& fset credibility-list (replace-item i credibility-list note)# D; w3 V' h: _( y; S" i
set i (i + 1)
0 R' C5 X( c/ u+ W1 `8 @  U, E5 n  x]: i% z) _& l+ d0 N' g
end
2 s- ?# e7 p" S, L! p8 P
9 Z$ W. Q- ?4 B$ H9 \+ V+ X$ mto update-global-reputation-list
1 y: n- R' R$ h) I7 [; f7 }let j 0
4 \& {/ w5 j3 k' ]while[j < people]! w+ A2 c- a* H# E: R6 ]
[
0 j  m4 E" J0 ^$ v3 N5 alet new 01 i$ g0 u' b* A' w0 ?! d2 b: D2 U
;;
暂存新的一个全局声誉. P7 e' i- j, Z  a2 e" v1 C, c
let i 0& j: C$ x/ O6 g1 o6 M  z' V
let sum-money 0
! N/ q4 m: {! Dlet credibility-money 03 J2 s, F; _: ?9 o" v
while [i < people]
! M+ j9 A) k# S9 Z[0 t- B2 ]6 c( T5 X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 v5 p, K1 i$ [  d. d- f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% n8 O, d- ?6 ^) xset i (i + 1)
% `7 t$ _5 Y3 K) l7 U7 U! Y]6 E1 x( s: P8 V- }! M
let k 0- v. Q' ^  ]. d/ |
let new1 0$ V; N  ~8 e6 {! J
while [k < people]
! U7 j2 `" C6 u0 @3 _6 X& _( \[
% h9 R8 X3 t" B: F$ x  g* O1 ]/ \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)6 k" `( g6 \  s4 U5 U3 v6 ~$ r5 e
set k (k + 1)5 q1 t) P+ Y2 b  h  f4 O$ b% F
]5 ]8 L7 C8 f+ ^9 U; \5 |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) / r! z+ o+ Y. o( d. B& w
set global-reputation-list (replace-item j global-reputation-list new)) s/ r) X5 u% L) ~
set j (j + 1)
% S+ U7 I4 r% n: o/ T]
3 h1 B/ x1 e4 I5 Aend& c1 g* g" }' W2 d+ r8 [
$ i; u- x5 K, t- U% h
$ u8 t6 j: c* Q1 M% ~# o
* N+ r7 X& E& X: W: K7 x
to get-color7 S  Y# b* f5 C! u' ~
& x' V. `7 D4 x6 a7 K+ }5 D
set color blue

! o5 L; V* {4 q: w9 P4 Z& u" Lend
& A9 b% P7 ]) x3 w0 }4 I0 F0 N$ o
, Y  T5 F9 q, Q$ ito poll-class# p5 ^) i! g7 {0 m3 ?) q4 ]1 j6 @
end  T- m' H6 J( U7 m/ D5 R% X
: @! d* E7 T' y
to setup-plot1* n, {! Q8 ]+ }) [
" L* ?5 O! `1 d) j0 Z) x+ L0 P/ _
set-current-plot "Trends-of-Local-reputation"
+ ?" ]- W7 }: s$ h2 [6 z/ _

4 w5 \/ A' D% }1 v; e  {set-plot-x-range 0 xmax

& N" v" G$ E% I- N
0 N# [8 `1 F! f/ ?set-plot-y-range 0.0 ymax
0 f% {, |$ m) q; u4 ^. T
end5 g* V- Z+ G/ i

8 z/ O) X4 o" w6 H3 P* Lto setup-plot2
% L0 h  h% z; ~  M
: m" W/ S- z5 E- K: t1 {set-current-plot "Trends-of-global-reputation"
- Q$ B) B) j4 i! Z

) L( S9 o8 Q% F+ m( @7 l0 z6 Y3 S# uset-plot-x-range 0 xmax
# R1 h2 P1 f4 ?4 w. _* l

6 B1 ]/ S  M+ t8 K+ {set-plot-y-range 0.0 ymax
/ W5 s& G0 L2 T7 {7 B1 b
end+ H: s! w0 ?' E5 i+ L. _4 q. p8 g0 b
: g7 `: k7 C) ?" [' d7 u
to setup-plot3% F1 s% [7 W  P7 i9 `0 Y! Q  N6 [% U
; ~, b. l6 ^' o0 r  X8 I0 v& w
set-current-plot "Trends-of-credibility"

5 D$ e" q, i( H
0 i9 y5 w% i2 T  }9 S* J' tset-plot-x-range 0 xmax
) U2 {; k+ U; q' c" A' V
0 Q8 T+ |2 @, U$ k& ?
set-plot-y-range 0.0 ymax
9 V. Z* m4 w0 @; o0 `0 x" K
end- x) N. S1 D' V8 P4 c

3 S, D' W5 d8 Yto do-plots
; j; u" A9 l2 f9 r0 pset-current-plot "Trends-of-Local-reputation"
7 G. M& K5 X; d" m$ A- t2 W9 yset-current-plot-pen "Honest service"
, S) i+ x5 m; Gend7 U* H& w8 j! S$ _& P
& {& x8 b9 C/ O* d4 G6 t1 B" g1 h
[ 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.
) a5 o0 R. K0 R2 H8 P0 P  y& p7 V  q/ S! d: 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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